Toyota Jidosha Kabushiki Kaisha

Ilika Technologies Limited

Thierry Le Gall

Christopher Edward Lee

Brian Elliott Hayden

Chihiro Yada

Duncan Clifford Alan Smith

Shoji Yokoishi

Hiroshi Suyama

Brian Elliot Hayden

Karen Marie Brace

Karen Brace

A main object of the present invention is to provide a Li&#x2014;La&#x2014;Ti&#x2014;O based solid electrolyte material having high Li ion conductivity in the crystal grain boundary. The present invention attains the object by providing solid electrolyte material represented by a general formula: Li(LaM1) (TiM2)O, wherein 'x' is 0&#x3c;x&#x3c;0.17; 'a' is 0&#x2266;a&#x2266;0.5; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;0.5; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga, and wherein the solid electrolyte material is a crystalline material, is in thin film form, and has a thickness of 250 nm to 850 nm.

Solid electrolyte material, lithium battery, and method of producing solid electrolyte material

A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Li(LaM1)(TiM2)O, characterized in that 'x' is 0&#x3c;x&#x2266;1; 'a' is 0&#x2266;a&#x2266;2; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;3; &#x201c;&#x3b4;&#x201d; is &#x2212;2&#x2266;&#x3b4;&#x2266;2; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.

A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Li(LaM1)(TiM2)O, characterized in that 'x', 'y', and &#x201c;z&#x201d; satisfy relations of x+y+z=1, 0.652&#x2266;x/(x+y+z)&#x2266;0.753, and 0.167&#x2266;y/(y+z)&#x2266;0.232; &#x201c;a&#x201d; is 0&#x2266;a&#x2266;1; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;1; &#x201c;&#x3b4;&#x201d; is 0.8&#x2266;&#x3b4;&#x2266;1.2; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.

A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Li(LaM1)(TiM2)O, wherein 'x', 'y', and &#x201c;z&#x201d; satisfy relations of x+y+z=1, 0.850&#x2266;x/(x+y+z)&#x2266;0.930, and 0.087&#x2266;y/(y+z)&#x2266;0.115; &#x201c;a&#x201d; is 0&#x2266;a&#x2266;1; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;1; &#x201c;&#x3b4;&#x201d; is 0.8&#x2266;&#x3b4;&#x2266;1.2; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.

A metal alloy catalyst for the oxygen reduction reaction in fuel cells is disclosed. The catalyst contains the metals Pd, M1 and M2. M1 and M2 are different metals selected from Co, Fe, Au, Cr and W, excluding the combination PdCoAu.

Metal alloy catalysts for fuel cell cathodes

For the oxygen reduction reaction at the cathode of proton exchange membrane fuel cells, a metal alloy catalyst contains the metals Pd, M1 and M2 where M1 and M2 are different metals selected from Co, Fe, Au, Cr and W (but excluding the combination PdCoAu). Preferred ternary alloys for use as catalysts may be selected from PdCoCr, PdCoW, PdFeCr, PdFeW, PdCrW, PdWAu, PdCrAu, PdCoFe and PdFeAu. Compositional ranges that are specially effective are assessed by a high throughput physical vapor deposition method. Catalysts especially suitable for use in direct methanol fuel cells are identified.

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Southampton, United Kingdom

Thierry Le Gall