LiFePO4 composite cathode materials with PEDOT [poly(3,4-ethylenedioxythiopene)] were prepared by... more LiFePO4 composite cathode materials with PEDOT [poly(3,4-ethylenedioxythiopene)] were prepared by electropolymerization or by blending methods.
Cobalt and manganese substituted d-FeOOH were obtained and used in the preparation of Fe, Co and ... more Cobalt and manganese substituted d-FeOOH were obtained and used in the preparation of Fe, Co and Mn, Fe mixed oxides. Cobalt is present in the oxyhydroxide with 2.8–3.0, oxidation states. Lattice parameters and oxidation state decrease with cobalt content. Mn-substituted phases contain manganese in oxidation states decreasing from 4.0 to 3.3 as the degree of substitution is higher. These Mn-oxidation states imply cation vacancies which are alternatively ordered in octahedral sites along the [001] direction of the d-oxyhydroxide structure. The thermal decomposition of the cobalt and Mn-substituted samples at 200 ° C leads to mixed oxides with distorted a-Fe2O3 structure and high manganese and cobalt oxidation states. From 200 to 400 ° C, a reduction process takes place, leading to Mn-substituted sesquioxides, while Co-containing samples decompose into mixtures of spinel and a-Fe2O3-structure phases.
New Trends in Intercalation Compounds for Energy Storage, 2002
Some decades ago, binary lithium alloys with elements such as Sb and Sn were proposed as candidat... more Some decades ago, binary lithium alloys with elements such as Sb and Sn were proposed as candidates to replace lithium metal anodes (Weppner and Huggins, 1977, Wen and Huggins 1981, Wang et al. 1986). Due to the lithium-rich compositions that can be reached in some of these intermetallic phases (e.g. Li3Sb and Li22Sn5) high capacities are observed during the first
ABSTRACT Different solid solutions in the MxM1-x'C2O4 center dot H2O (MM': FeMn. ... more ABSTRACT Different solid solutions in the MxM1-x'C2O4 center dot H2O (MM': FeMn. CoMn; 0 <= x <= 1) system have been prepared in the form of nanoribbons by a reverse micelles method. The resulting di-hydrated oxalates form solid solutions that crystallize in two forms: the a monoclinic form with space group C2/c and the beta orthorhombic form with space group Cccm. Anhydrous mixed oxalates are used as high-capacity (ca. 600 mA h g(-1)) lithium storage materials, with good capacity retention after 75 cycles. The lithium storage mechanism is complex and involves conversion reactions together with double layer charge storage and reversible reactions with the electrolyte. The low temperature synthesis of these materials makes them attractive materials for low-cost Li-ion electrodes.
LiFePO4 composite cathode materials with PEDOT [poly(3,4-ethylenedioxythiopene)] were prepared by... more LiFePO4 composite cathode materials with PEDOT [poly(3,4-ethylenedioxythiopene)] were prepared by electropolymerization or by blending methods.
Cobalt and manganese substituted d-FeOOH were obtained and used in the preparation of Fe, Co and ... more Cobalt and manganese substituted d-FeOOH were obtained and used in the preparation of Fe, Co and Mn, Fe mixed oxides. Cobalt is present in the oxyhydroxide with 2.8–3.0, oxidation states. Lattice parameters and oxidation state decrease with cobalt content. Mn-substituted phases contain manganese in oxidation states decreasing from 4.0 to 3.3 as the degree of substitution is higher. These Mn-oxidation states imply cation vacancies which are alternatively ordered in octahedral sites along the [001] direction of the d-oxyhydroxide structure. The thermal decomposition of the cobalt and Mn-substituted samples at 200 ° C leads to mixed oxides with distorted a-Fe2O3 structure and high manganese and cobalt oxidation states. From 200 to 400 ° C, a reduction process takes place, leading to Mn-substituted sesquioxides, while Co-containing samples decompose into mixtures of spinel and a-Fe2O3-structure phases.
New Trends in Intercalation Compounds for Energy Storage, 2002
Some decades ago, binary lithium alloys with elements such as Sb and Sn were proposed as candidat... more Some decades ago, binary lithium alloys with elements such as Sb and Sn were proposed as candidates to replace lithium metal anodes (Weppner and Huggins, 1977, Wen and Huggins 1981, Wang et al. 1986). Due to the lithium-rich compositions that can be reached in some of these intermetallic phases (e.g. Li3Sb and Li22Sn5) high capacities are observed during the first
ABSTRACT Different solid solutions in the MxM1-x'C2O4 center dot H2O (MM': FeMn. ... more ABSTRACT Different solid solutions in the MxM1-x'C2O4 center dot H2O (MM': FeMn. CoMn; 0 <= x <= 1) system have been prepared in the form of nanoribbons by a reverse micelles method. The resulting di-hydrated oxalates form solid solutions that crystallize in two forms: the a monoclinic form with space group C2/c and the beta orthorhombic form with space group Cccm. Anhydrous mixed oxalates are used as high-capacity (ca. 600 mA h g(-1)) lithium storage materials, with good capacity retention after 75 cycles. The lithium storage mechanism is complex and involves conversion reactions together with double layer charge storage and reversible reactions with the electrolyte. The low temperature synthesis of these materials makes them attractive materials for low-cost Li-ion electrodes.
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Papers by José L . Tirado