Sulfide solid electrolyte material, lithium solid battery, and producing method for sulfide solid electrolyte material
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsIwao NITTA, Naotaka SAWADA, Nobuaki TAKAZAWA
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Abstract
An object of the invention is to provide a sulfide solid electrolyte material with high heat stability. In the invention, the object is achieved by providing a sulfide solid electrolyte material comprising an ion conductor having (i) a Li element and (ii) an anion structure containing at least a P element, wherein a main component of the anion structure is PS43−, and the ion conductor has the PS43− and PS3O3− as the anion structure, but has neither PS2O23− nor PSO33−.
Claims9
A sulfide solid electrolyte material comprising an ion conductor having (i) a Li element and (ii) an anion structure containing at least a P element, wherein
- a main component of the anion structure is PS43−, and
- the ion conductor has the PS43− and PS3O3− as the anion structure, but has neither PS2O23− nor PSO33−.
A producing method for a sulfide solid electrolyte material, the sulfide solid electrolyte material comprising an ion conductor having (i) a Li element and (ii) an anion structure containing at least a P element;
- the method comprising an amorphizing step of obtaining a sulfide glass by amorphizing a raw material composition containing Li2S, P2S5, and Li3PO4, and
- a heat treating step of obtaining the sulfide solid electrolyte material by heat treating the sulfide glass;
- wherein
- a main component of the anion structure is PS43−, and
- the ion conductor has the PS43− and PS3O3− as the anion structure, but has neither PS2O23− nor PSO33−.
Dependencies are inferred from the claim text.