Houston lab's breakthrough light-harvesting processes near market readiness

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The new process developed by Rice University researchers makes solar cells that are about 10 times more durable than traditional methods. Photos by Jeff Fitlow/Rice University

A groundbreaking Rice University lab has made further strides in its work to make harvesting light energy more efficient and stable.

Presented on the cover of a June issue of Science, a study from Rice engineer Aditya Mohite's lab uncovered a method to synthesize a high-efficiency perovskite solar cell, known as formamidinium lead iodide (FAPbI3), converting them into ultrastable high-quality photovoltaic films, according to a statement from Rice. Photovoltaic films convert sunlight into electricity.

The new process makes solar cells that are about 10 times more durable than traditional methods.

“Right now, we think that this is state of the art in terms of stability,” Mohite said in a statement. “Perovskite solar cells have the potential to revolutionize energy production, but achieving long-duration stability has been a significant challenge.”

The change come from "seasoning" the FAPbI3 with 2D halide perovskites crystals, which the Mohite lab also developed a breakthrough synthesis process for last year

The 2D perovskites helped make the FAPbI3 films more stable. The study showed that films with 2D perovskites deteriorated after two days of generating electricity, while those with 2D perovskites had not started to degrade after 20 days.

“FAPbI3 films templated with 2D crystals were higher quality, showing less internal disorder and exhibiting a stronger response to illumination, which translated as higher efficiency," Isaac Metcalf, a Rice materials science and nanoengineering graduate student and a lead author on the study, said in the statement.

Additionally, researchers say their findings could make developing light-harvesting technologies cheaper, and can also allow light-harvesting panels to be lighter weight and more flexible.

"Perovskites are soluble in solution, so you can take an ink of a perovskite precursor and spread it across a piece of glass, then heat it up and you have the absorber layer for a solar cell,” Metcalf said. “Since you don’t need very high temperatures ⎯ perovskite films can be processed at temperatures below 150 Celsius (302 Fahrenheit) ⎯ in theory that also means perovskite solar panels can be made on plastic or even flexible substrates, which could further reduce costs.”

Mohite adds this has major implications for the energy transition at large.

“If solar electricity doesn’t happen, none of the other processes that rely on green electrons from the grid, such as thermochemical or electrochemical processes for chemical manufacturing, will happen,” Mohite said. “Photovoltaics are absolutely critical.”

The Mohite lab's process for creating 2D perovskites of the ideal thickness and purity was published in Nature Synthesis last fall. At the time, Mohite said the crystals "hold the key to achieving commercially relevant stability for solar cells."

About a year ago, the lab also published its work on developing a scalable photoelectrochemical cell. The research broke records for its solar-to-hydrogen conversion efficiency rate.

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Woodside Energy has committed $12.5 million to a new partnership with Rice University. Photo via Instagram/WoodsideEnergy

Woodside Energy backs $12.5M clean energy accelerator for new technologies

howdy, partner

A global Australian energy company with its international operations in Houston has backed a new climatetech accelerator in partnership with Rice University.

Woodside Energy, headquartered in Australia with its global operations in Houston following its 2022 acquisition of BHP Group, has committed $12.5 million over the next five years to create the Woodside Rice Decarbonization Accelerator.

"The goal of the accelerator is to fast track the commercialization of innovative decarbonization technologies created in Rice labs," Rice University President Reginald DesRoches says to a crowd at the Ion at the initiative's announcement. "These technologies have the potential to make better batteries, transitistors, and other critical materials for energy technologies. In addition, the accelerator will work on manufacturing these high-value products from captured and converted carbon dioxide and methane."

"The Woodside Rice Decarbonization Accelerator will build on the work that Rice has been doing in advanced materials, energy, energy transition, and climate for many years. More than 20 percent of our faculty do some related work to energy and climate," he continues. "Harnessing their efforts alongside an esteemed partner like Woodside Energy is an exciting step that will undoubtedly have an impact far and wide."

Rice University announced the new climate tech initiative backed by Woodside Energy this week. Photo by Natalie Harms/InnovationMap

Woodside, which has over 800 employees based in Houston, has been a partner at the Ion since last spring. Daniel Kalms, Woodside Energy's CTO and executive vice president, explains that the new initiative falls in line with the three goals of Woodside's climate strategy, which includes keeping up with global energy demand, creating value, and conducting its business sustainably. The company has committed a total of $5 billion to new energy by 2030, Kalms says.

"We know that the world needs energy that is more affordable, sustainable, and secure to support the energy transition — and we want to provide that energy. Energy that is affordable, sustainable, and secure requires innovation and the application of new technology. That's what this is about," he says.

"Of course collaboration will be the key," Kalms continues. "By working with researchers, entrepreneurs, leading experts and parallel industries, we can combine our capability to solve collective challenges and create shared opportunities. That's why we are excited to be partnering with Rice."

The accelerator will be run by Paul Cherukuri, vice president of innovation at Rice University, and Aditya Mohite, associate professor of Chemical and Biomolecular Engineering and Materials Science and Nanoengineering. Additional Rice professors will be involved as well, Cherukuri says.

"Success for us will not be papers, it will be products," Cherukuri says of what Woodside wants from the partnership. "We picked faculty at Rice in particular who were interested in taking on this charge, and they were all faculty who created companies."

Last fall, Rice announced a grant and venture initiative to accelerate innovation from Rice in the biotech space.

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This article originally ran on InnovationMap.

Rice University engineers and collaborators developed a technology that converts light into electricity. Photo by Jeff Fitlow/Rice University

Houston research team develops breakthrough process for light-harvesting crystals in DOE-backed project

solar success

A team of Rice researchers have developed a breakthrough synthesis process for developing light-harvesting materials that can be used in solar cells to convert light into electricity.

Detailed in an October study in Nature Synthesis, the new process is able to more closely control the temperature and time of the crystallization process to create 2D halide perovskites with semiconductor layers of “ideal thickness and purity,” according to a release from Rice.

The process, known as kinetically controlled space confinement, was developed by Rice University chemical and biomolecular engineer Aditya Mohite, along with others at Northwestern University, the University of Pennsylvania and the University of Rennes. The research was backed by the Department of Energy, the Army Research Office, the National Science Foundation and a number of other organizations.

“This research breakthrough is critical for the synthesis of 2D perovskites, which hold the key to achieving commercially relevant stability for solar cells and for many other optoelectronic device applications and fundamental light matter interactions,” Mohite said in a statement.

Traditional synthesis methods for creating 2D halide perovskites, which have been shown to offer a high-performance low-cost way to produce solar cells, have generated uneven crystal growth when attempting to reach a higher n value. And uneven crystal growth can result in a less reliable material, while a high n value can result in higher electrical conductivity, among other benefits.

The study shows how the kinetically controlled space confinement method can gradually increase n values in 2D halide perovskites, which will assist in the production of crystals with a certain thickness.

“We designed a way to slow down the crystallization and tune each kinetics parameter gradually to hit the sweet spot for phase-pure synthesis,” Jin Hou, a Ph.D. student at Rice and a lead author on a study, said in a statement.

The process is expected to improve the stability and lower the costs of emerging technologies in optoelectronics, or the study and application of light-emitting or light-detecting devices, and photovoltaics, the conversion of thermal energy into electricity.

"This work pushes the boundaries of higher quantum well 2D perovskites synthesis, making them a viable and stable option for a variety of applications,” Hou added.

Houston universities have been making major strides relating to crystallization processes in recent months.

In September, the University of Houston announced The Welch Foundation awarded its inaugural $5 million Catalyst for Discovery Program Grant to establish the Welch Center for Advanced Bioactive Materials Crystallization. The center will build upon UH professor Jeffrey Rimer's work relating to the use of crystals to help treat malaria and kidney stones.

Over the summer, a team of researchers at UH also published a paper detailing their discovery of how to use molecular crystals to capture large quantities of iodine, one of the most common products of radioactive fission, which is used to create nuclear energy.

Rice University engineers have created a device that absorbs light, converts it into electricity, and then uses the electricity to split water molecules and generate hydrogen. Photo courtesy Gustavo Raskoksy/Rice University

Rice University team breaks records with new sunlight-to-hydrogen device

big win

A team of Rice University engineers have developed a scalable photoelectrochemical cell that converts sunlight into clean hydrogen at a record-setting pace.

The lab led by Aditya Mohite, an associate professor at Rice, published the findings in a study in Nature Communications late last month, in collaboration with the National Renewable Energy Laboratory, which is backed by the Department of Energy. In it, the team details how they created a device that absorbs light, converts it into electricity, and then uses the electricity to split water molecules and generate hydrogen.

Austin Fehr, a chemical and biomolecular engineering doctoral student at Rice and one of the study’s lead authors, says in a statement that the device "could open up the hydrogen economy and change the way humans make things from fossil fuel to solar fuel."

The device has a high solar-to-hydrogen conversion efficiency rate of 20.8 percent, which has yet to be reached with this type of technology, according to a release from Rice. In addition to its speed, this device is groundbreaking because it uses low-cost metal-halide perovskite semiconductors to power the reaction.

A photoreactor developed by Rice University’s Mohite research group and collaborators achieved a 20.8 percent solar-to-hydrogen conversion efficiency. Photo courtesy Gustavo Raskoksy/Rice University

“Using sunlight as an energy source to manufacture chemicals is one of the largest hurdles to a clean energy economy,” Fehr says in the statement. “Our goal is to build economically feasible platforms that can generate solar-derived fuels. Here, we designed a system that absorbs light and completes electrochemical water-splitting chemistry on its surface.”

To create the device the Mohite lab turned their existing solar cell into a reactor to split water into oxygen and hydrogen. However they continued running into issues with the semiconductors being "extremely unstable in water," according to Rice.

After two years of trials and errors, the team uncovered that by adding two layers of barriers to the semiconductors they were able to reach these record-breaking efficiency rates.

The team has also shown uses for their double barrier design with different semiconductors and for different reactions.

“We hope that such systems will serve as a platform for driving a wide range of electrons to fuel-forming reactions using abundant feedstocks with only sunlight as the energy input,” Mohite says in the statement.

The device joins another game-changing product shared in a Rice research study in recent weeks. Last month, a Rice University lab led by Haotian Wang, the William Marsh Rice Trustee Chair and an associate professor at Rice, shared their findings on how their simple plug-and-play device removes carbon dioxide from air capture to induce a water-and-oxygen-based electrochemical reaction.

Rice also recently opened registration for its 20th anniversary of Energy Tech Venture Day. Click here to register for the event on Sept. 21.

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CenterPoint's resiliency plan, Chevron starts up new site, and more trending Houston energy transition news

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Editor'snote: From Chevron's new deepwater project going online to two Texas companies collaborating on energy storage, these are the top headlines that resonated with EnergyCapital readers on social media and daily newsletter this week.

CenterPoint Energy releases details of resiliency plan

To improve resiliency and reduce the risk of outages from storms or hurricanes, CenterPoint Energy announced its Greater Houston Resiliency Initiative.

The initiative will include an “accelerated timeline to execute specific actions to strengthen electric infrastructure across Houston, and more than 40 critical actions in total to strengthen the electric grid, and improve the company's customer communications and emergency coordination before the next hurricane,” according to a news release.

As part of the “Taking Action Now” section, more than 2,500 CenterPoint frontline workers and contractors will be taking a series of targeted actions to strengthen the grid and reduce the risk of outages before the next major storm that includes installing stronger and more storm-resilient poles, trimming or removal of vegetation from lines, and installing 300 automated devices, which CenterPoint says can help reenergize certain lines and lead to less without power. Continue reading.

Chevron launches production at deepwater project that aims to lower carbon intensity off offshore activity

Chevron's newest deepwater oil and natural gas production project, called the Anchor, is an all-electric facility. Photo courtesy of Chevron

Chevron's new massive deepwater oil and natural gas project in the Gulf of Mexico is officially up and running.

Chevron Corp., which recently announced its relocating its global headquarters to Houston, has officially started oil and natural gas production from its Anchor project in the U.S. Gulf of Mexico.

The semi-submersible floating production unit features a high-pressure technology that operates at up to 20,000 psi with reservoir depths reaching 34,000 feet below sea level, Chevron reports, and has a capacity of 75,000 gross barrels of oil per day and 28 million gross cubic feet of natural gas per day. Continue reading.

Two Texas companies combine to enhance hydrogen fueling, storage infrastructure

Celly offers logistics, storage, and dispensing to innovative modular refueling station services. Photo via cellyh2.com

A provider of hydrogen infrastructure solutions Celly H2 has announced its acquisition of ChemTech Energy (CNE) to continue Celly's mission of leading hydrogen fueling and storage infrastructure.

The Willis, Texas-based company offers logistics, storage, and dispensing to innovative modular refueling station services. Montgomery’s Chemtec Energy has a 25-year legacy in the oil and gas market and specializes in modular hydrogen fueling and storage infrastructure solutions.

"This acquisition marks a significant milestone for Celly as we continue to expand our portfolio in the renewable energy market," Founder and CEO of Celly Austin Terry says in a news release. Continue reading.

Houston clean energy provider raises $10.8M series A

Branch Energy aims to provide customers with clean energy at a lower cost than competitors. Photo via Getty Images

A tech-driven retail energy provider based in Houston has secured an oversubscribed series A round of funding.

Branch Energy raised a $10.8 million round led by climate-focused venture capital firm Prelude Ventures with co-investor Zero Infinity Partners, an infrastructure tech-focused firm. The fresh funding will go toward accelerating the company's battery management tech and build out the infrastructure of its field services.

A vertically integrated power provider, Branch Energy aims to provide customers with demand management software and battery storage systems to ensure long-term, stable, and clean energy at a lower cost than competitors. Continue reading.

Woodside to acquire clean ammonia project outside of Houston in $2.4B deal

OCI broke ground on the project in 2022. Photo via oci-global.com

Woodside Energy has announced its acquiring a Beaumont, Texas, clean ammonia project that's slated to deliver its first ammonia by 2025 and lower carbon ammonia by 2026.

The agreement is for Woodside to acquire 100 percent of OCI Clean Ammonia Holding and its lower carbon ammonia project in Beaumont in an all-cash deal of approximately $2.35 billion. According to Woodside CEO Meg O’Neill, the acquisition positions Woodside as an early mover in clean ammonia within the energy transition.

“This transaction positions Woodside in the growing lower carbon ammonia market," O’Neill says in a news release. "The potential applications for lower carbon ammonia are in power generation, marine fuels and as an industrial feedstock, as it displaces higher-emitting fuels. Continue reading.

New report maps Houston workforce development strategies as companies transition to cleaner energy

to-do list

The University of Houston’s Energy University latest study with UH’s Division of Energy and Innovation with stakeholders from the energy industry, academia have released findings from a collaborative white paper, titled "Workforce Development for the Future of Energy.”

UH Energy’s workforce analysis found that the greatest workforce gains occur with an “all-of-the-above” strategy to address the global shift towards low-carbon energy solutions. This would balance electrification and increased attention to renewables with liquid fuels, biomass, hydrogen, carbon capture, utilization and storage commonly known as CCUS, and carbon dioxide removal, according to a news release.

The authors of the paper believe this would support economic and employment growth, which would leverage workers from traditional energy sectors that may lose jobs during the transition.

The emerging hydrogen ecosystem is expected to create about 180,000 new jobs in the greater Houston area, which will offer an average annual income of approximately $75,000. Currently, 40 percent of Houston’s employment is tied to the energy sector.

“To sustain the Houston region’s growth, it’s important that we broaden workforce participation and opportunities,” Ramanan Krishnamoorti, vice president of energy and innovation at UH, says in a news release. “Ensuring workforce readiness for new energy jobs and making sure we include disadvantaged communities is crucial.”

Some of the key takeaways include strategies that include partnering for success, hands-on training programs, flexible education pathways, comprehensive support services, and early and ongoing outreach initiatives.

“The greater Houston area’s journey towards a low-carbon future is both a challenge and an opportunity,” Krishnamoorti continues. “The region’s ability to adapt and lead in this new era will depend on its commitment to collaboration, innovation, and inclusivity. By preparing its workforce, engaging its communities, and leveraging its industrial heritage, we can redefine our region and continue to thrive as a global energy leader.”

The study was backed by federal funding from the Department of the Treasury through the State of Texas under the Resources and Ecosystems Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012.

Houston geothermal startup selects Texas location for first energy storage facility

major milestone

Houston-based geothermal energy startup Sage Geosystems has teamed up with a utility provider for an energy storage facility in the San Antonio metro area.

The three-megawatt EarthStore facility will be on land controlled by the San Miguel Electric Cooperative, which produces electricity for customers in 47 South Texas counties. The facility will be located in the town of Christine, near the cooperative’s coal-fired power plant.

Sage says its energy storage system will be paired with solar energy to supply power for the grid operated by the Electric Reliability Council of Texas (ERCOT). The facility is set to open later this year.

“Once operational, our EarthStore facility in Christine will be the first geothermal energy storage system to store potential energy deep in the earth and supply electrons to a power grid,” Cindy Taff, CEO of Sage Geosystems, says in a news release.

The facility is being designed to store geothermal energy during six- to 10-hour periods.

“Long-duration energy storage is crucial for the ERCOT utility grid, especially with the increasing integration of intermittent wind and solar power generation,” says Craig Courter, CEO of the San Miguel Electric Cooperative.

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