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HYDROMETALLURGICAL REFINING OF BLACK MASS

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Electra Battery Materials is a battery materials company focused on assets in Canada and the United States. It operates a fully permitted hydrometallurgical facility capable of supplying cobalt sulfate to the electric vehicle market. Phase 1 involves commissioning the cobalt sulfate plant in Q4 2022 using third-party cobalt hydroxide feed. Phase 2 will focus on lithium-ion battery recycling using the existing asset to process black mass into saleable products like graphite, copper, nickel, cobalt, and lithium. The company is also developing a cobalt resource in Idaho and plans future phases involving battery-grade nickel sulfate and battery precursor manufacturing.

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March 2022 Existing Refinery
TSX.V: ELBM | OTCQX: ELBMF All statements in this presentation other than statements of historical fact constitute “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995, and “forward- looking information” under similar Canadian legislation and are based on the reasonable expectations, estimates and projections of Electra Battery Materials Corporation as of the date of this presentation. Forward-looking statements and forward-looking information include, without limitation, possible events, trends and opportunities and statements, including with respect to the state of the cobalt market, global market conditions, the proposed development of the Electra Battery Materials Park, the processing of raw material feedstocks, the ability to secure financing, results of exploration activities, potential acquisitions, capital expenditures, successful development of assets, currency fluctuations, government policy and regulation and environmental regulation. In particular, forward-looking information included in this presentation includes, without limitation, the opportunity to restart the Electra refinery and targeted metrics. Generally, forward-looking statements and forward-looking information can be identified by the use of forward-looking terminology such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates”, “believes”, or variations of such words or state that certain actions, events or results “may”, “could”, “would”, “might” or “will be taken”, “occur” or “be achieved”. Forward-looking statements and forward-looking information are necessarily based upon a number of estimates and assumptions that, while considered reasonable by the Company as of the date of such statements, are inherently subject to significant business, economic and competitive uncertainties and contingencies. Known and unknown factors could cause actual results to differ materially from those projected in the forward-looking statements and forward-looking information. Such factors include changes in supply and demand for cobalt ,nickel and other battery raw materials, the results of metallurgical and engineering studies, changes in competitive pressures, timing and amount of capital expenditures, changes in capital markets, changes in exchange rates, unexpected geological or environmental conditions, changes in and the effects of, government legislation, taxation and regulations and political or economic developments, success in attracting officers for the future success of the Company’s business, success in obtaining any required additional financing to advance strategic priorities, and risks associated with obtaining necessary licenses or permits. Many of these uncertainties and contingencies can affect the Company’s actual results and could cause actual results to differ materially from those expressed or implied in any forward-looking statements and forward- looking information made by, or on behalf of, the Company. There can be no assurance that forward-looking statements and forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. All of the forward-looking statements and forward-looking information made in this presentation are qualified by these cautionary statements. Although management of the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements or forward-looking information, there may be other factors that cause results not to be as anticipated. There can be no assurance that such statements will prove to be accurate, as actual results could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements and forward-looking information. The Company does not undertake to update any forward-looking statements or forward-looking information that are incorporated by reference herein, except in accordance with applicable securities laws. Timelines used in this presentation are for the purpose of aiding management in the planning and implementation of the projects and are not based on a detailed assessment of project requirements. Consequently, the timelines are subject to material revision as subsequent technical reports and assessments are completed. Future phases of the project are contingent upon completion of preceding phases. Nothing in this presentation should be construed as either an offer to sell or a solicitation of an offer to buy or sell shares in any jurisdiction. Mark Trevisiol, P.Eng. and Dan Pace, P.Geo are Qualified Persons as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Project (“NI 43-101”) and both are employed by Electra. They have reviewed and approved the technical content in this presentation. 2
TSX.V: ELBM | OTCQX: ELBMF 3 Cathode materials require extremely high purity levels – it all starts here Source: Electra Battery Materials – Public Company with Battery Material focus – Assets in Canada and United States  Fully Permitted Hydrometallurgical facility with a 10-year operating history  Only facility of its kind in North America, capable of supplying the electric vehicle market with Cobalt Sulphate, Commissioning in 2022  51% lower GHGs than Chinese peers, in part owing to hydroelectric power grid  Growing a Cobalt resource in Idaho 3
TSX.V: ELBM | OTCQX: ELBMF 4 North America’s integrated, sustainable battery materials solution Electra Battery Materials - What we are doing Phase 1 Commission battery grade cobalt sulfate plant (Q4) – Third-party cobalt hydroxide feed – Iron Creek primary cobalt extraction Phase 2 Lithium-ion battery recycling Phase 3 Battery grade nickel sulfate production – Third-party North American nickel raw material feed Phase 4 Battery precursor manufacturing 2023-26 National or international expansion Iron Creek cobalt-copper project development Products Cobalt, Nickel, Lithium, Copper, Graphite, Precursors
TSX.V: ELBM | OTCQX: ELBMF 5 Electra Battery Materials - What we are doing Phase 1 Commission battery grade cobalt sulfate plant (Q4) Solvent Extraction Facility
Hydroxide Feed de-lumping Hydroxide Feed milling & pulping Hydroxide Feed Slurry Storage Tanks, water addition Impurity SX Hydroxide Feed Leaching Hydroxide Feed Bag Breaking Water Water Water H2SO4 Cobalt SX Cobalt Sulphate Crystallization Soln to Solvent Extraction (SX) Neutralization S/L Separation Product Load Out Raffinate COBALT HYDROXIDE TO COBALT SULPHATE PROCESSING
TSX.V: ELBM | OTCQX: ELBMF 7 Electra Battery Materials - What we are doing Phase 2 Lithium-ion battery recycling Filter Presses Leach Vessels Inside Leach Vessel Utilize Existing Asset for Black Mass Processing
TSX.V: ELBM | OTCQX: ELBMF 8 Leach Vessels Existing Ball Mill
TSX.V: ELBM | OTCQX: ELBMF 9 North America’s integrated, sustainable battery materials solution Electra Battery Materials Step 1 Will it make money? Understand the market and your customers, where will you sell. Step 2 Feedstocks – highly variable - so need a “nimble” and “robust” process, blending will help limit variability Step 3 Develop testing program – very iterative to get optimized, be prepared for some challenges Having bench scale testing at plant for new feedstocks is a necessity Step 4 Bench test process on various feeds, prove out capability of process Products Cobalt, Nickel, Lithium, Copper, Graphite
Leaching S/L separation (filter press) Residue (filter press) to tailings Impurity1 removal mix tank Final Solution Impurity 2 Removal + Product (mix tank) Black Mass 20% solids Reagent Reagents Mix Tank Reagents Reagent Saleable products = Graphite, Copper, Nickel, Cobalt & Lithium Black Mass Process Flow Diagram
TSX.V: ELBM | OTCQX: ELBMF 11 North America’s integrated, sustainable battery materials solution Electra Battery Materials  People - need the technical competence to guide the development  Research – many of these individual chemical processing steps have been used before  Strategic use of reagents is PARAMOUNT  Patience – development takes time, set backs will happen  Market Intelligence – allowed us in mid stream to eliminate processing steps , save time and money
TSX.V: ELBM | OTCQX: ELBMF 12 North America’s integrated, sustainable battery materials solution Electra Battery Materials  Spending about $1.5 M to modify existing plant for plant scale production demonstration  Process flow diagrams completed , finalizing P&ID’s  Training modules being established for operators  Targeting mid summer demonstration  Once demonstrated move to securing black mass feed and stabilizing production - Initial capacity of 3500 tpy, move to +5000 tpy
HYDROMETALLURGICAL REFINING OF BLACK MASS

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HYDROMETALLURGICAL REFINING OF BLACK MASS

  • 2. TSX.V: ELBM | OTCQX: ELBMF All statements in this presentation other than statements of historical fact constitute “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995, and “forward- looking information” under similar Canadian legislation and are based on the reasonable expectations, estimates and projections of Electra Battery Materials Corporation as of the date of this presentation. Forward-looking statements and forward-looking information include, without limitation, possible events, trends and opportunities and statements, including with respect to the state of the cobalt market, global market conditions, the proposed development of the Electra Battery Materials Park, the processing of raw material feedstocks, the ability to secure financing, results of exploration activities, potential acquisitions, capital expenditures, successful development of assets, currency fluctuations, government policy and regulation and environmental regulation. In particular, forward-looking information included in this presentation includes, without limitation, the opportunity to restart the Electra refinery and targeted metrics. Generally, forward-looking statements and forward-looking information can be identified by the use of forward-looking terminology such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates”, “believes”, or variations of such words or state that certain actions, events or results “may”, “could”, “would”, “might” or “will be taken”, “occur” or “be achieved”. Forward-looking statements and forward-looking information are necessarily based upon a number of estimates and assumptions that, while considered reasonable by the Company as of the date of such statements, are inherently subject to significant business, economic and competitive uncertainties and contingencies. Known and unknown factors could cause actual results to differ materially from those projected in the forward-looking statements and forward-looking information. Such factors include changes in supply and demand for cobalt ,nickel and other battery raw materials, the results of metallurgical and engineering studies, changes in competitive pressures, timing and amount of capital expenditures, changes in capital markets, changes in exchange rates, unexpected geological or environmental conditions, changes in and the effects of, government legislation, taxation and regulations and political or economic developments, success in attracting officers for the future success of the Company’s business, success in obtaining any required additional financing to advance strategic priorities, and risks associated with obtaining necessary licenses or permits. Many of these uncertainties and contingencies can affect the Company’s actual results and could cause actual results to differ materially from those expressed or implied in any forward-looking statements and forward- looking information made by, or on behalf of, the Company. There can be no assurance that forward-looking statements and forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. All of the forward-looking statements and forward-looking information made in this presentation are qualified by these cautionary statements. Although management of the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements or forward-looking information, there may be other factors that cause results not to be as anticipated. There can be no assurance that such statements will prove to be accurate, as actual results could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements and forward-looking information. The Company does not undertake to update any forward-looking statements or forward-looking information that are incorporated by reference herein, except in accordance with applicable securities laws. Timelines used in this presentation are for the purpose of aiding management in the planning and implementation of the projects and are not based on a detailed assessment of project requirements. Consequently, the timelines are subject to material revision as subsequent technical reports and assessments are completed. Future phases of the project are contingent upon completion of preceding phases. Nothing in this presentation should be construed as either an offer to sell or a solicitation of an offer to buy or sell shares in any jurisdiction. Mark Trevisiol, P.Eng. and Dan Pace, P.Geo are Qualified Persons as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Project (“NI 43-101”) and both are employed by Electra. They have reviewed and approved the technical content in this presentation. 2
  • 3. TSX.V: ELBM | OTCQX: ELBMF 3 Cathode materials require extremely high purity levels – it all starts here Source: Electra Battery Materials – Public Company with Battery Material focus – Assets in Canada and United States  Fully Permitted Hydrometallurgical facility with a 10-year operating history  Only facility of its kind in North America, capable of supplying the electric vehicle market with Cobalt Sulphate, Commissioning in 2022  51% lower GHGs than Chinese peers, in part owing to hydroelectric power grid  Growing a Cobalt resource in Idaho 3
  • 4. TSX.V: ELBM | OTCQX: ELBMF 4 North America’s integrated, sustainable battery materials solution Electra Battery Materials - What we are doing Phase 1 Commission battery grade cobalt sulfate plant (Q4) – Third-party cobalt hydroxide feed – Iron Creek primary cobalt extraction Phase 2 Lithium-ion battery recycling Phase 3 Battery grade nickel sulfate production – Third-party North American nickel raw material feed Phase 4 Battery precursor manufacturing 2023-26 National or international expansion Iron Creek cobalt-copper project development Products Cobalt, Nickel, Lithium, Copper, Graphite, Precursors
  • 5. TSX.V: ELBM | OTCQX: ELBMF 5 Electra Battery Materials - What we are doing Phase 1 Commission battery grade cobalt sulfate plant (Q4) Solvent Extraction Facility
  • 6. Hydroxide Feed de-lumping Hydroxide Feed milling & pulping Hydroxide Feed Slurry Storage Tanks, water addition Impurity SX Hydroxide Feed Leaching Hydroxide Feed Bag Breaking Water Water Water H2SO4 Cobalt SX Cobalt Sulphate Crystallization Soln to Solvent Extraction (SX) Neutralization S/L Separation Product Load Out Raffinate COBALT HYDROXIDE TO COBALT SULPHATE PROCESSING
  • 7. TSX.V: ELBM | OTCQX: ELBMF 7 Electra Battery Materials - What we are doing Phase 2 Lithium-ion battery recycling Filter Presses Leach Vessels Inside Leach Vessel Utilize Existing Asset for Black Mass Processing
  • 8. TSX.V: ELBM | OTCQX: ELBMF 8 Leach Vessels Existing Ball Mill
  • 9. TSX.V: ELBM | OTCQX: ELBMF 9 North America’s integrated, sustainable battery materials solution Electra Battery Materials Step 1 Will it make money? Understand the market and your customers, where will you sell. Step 2 Feedstocks – highly variable - so need a “nimble” and “robust” process, blending will help limit variability Step 3 Develop testing program – very iterative to get optimized, be prepared for some challenges Having bench scale testing at plant for new feedstocks is a necessity Step 4 Bench test process on various feeds, prove out capability of process Products Cobalt, Nickel, Lithium, Copper, Graphite
  • 10. Leaching S/L separation (filter press) Residue (filter press) to tailings Impurity1 removal mix tank Final Solution Impurity 2 Removal + Product (mix tank) Black Mass 20% solids Reagent Reagents Mix Tank Reagents Reagent Saleable products = Graphite, Copper, Nickel, Cobalt & Lithium Black Mass Process Flow Diagram
  • 11. TSX.V: ELBM | OTCQX: ELBMF 11 North America’s integrated, sustainable battery materials solution Electra Battery Materials  People - need the technical competence to guide the development  Research – many of these individual chemical processing steps have been used before  Strategic use of reagents is PARAMOUNT  Patience – development takes time, set backs will happen  Market Intelligence – allowed us in mid stream to eliminate processing steps , save time and money
  • 12. TSX.V: ELBM | OTCQX: ELBMF 12 North America’s integrated, sustainable battery materials solution Electra Battery Materials  Spending about $1.5 M to modify existing plant for plant scale production demonstration  Process flow diagrams completed , finalizing P&ID’s  Training modules being established for operators  Targeting mid summer demonstration  Once demonstrated move to securing black mass feed and stabilizing production - Initial capacity of 3500 tpy, move to +5000 tpy