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US 2019/0296331 A1Published application
Positive electrode active material, positive electrode, and rechargeable battery
AssigneeFuji Silysia Chemical Ltd.
InventorsMitsuhiro Kamimura, Mitsuteru Ogawa, Kunio Awaga, Zhongyue Zhang, Yang Wu
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Abstract
A positive electrode active material contains conductive silica and sulfur filled in pores of the conductive silica. The conductive silica is preferably a composite containing silica gel and fine particulate carbon dispersed in the silica gel. The positive electrode includes the aforementioned positive electrode active material. A rechargeable battery includes the aforementioned positive electrode.
Claims15
A positive electrode active material comprising:
- conductive silica;
- and
- sulfur.
A positive electrode active material comprising:
- conductive silica;
- and
- sulfur filled in pores of the conductive silica.
A positive electrode active material comprising:
- a silica gel-carbon composite having:
- a specific surface area of 20 to 1000 m2/g,
- a pore volume of 0.3 to 2.0 ml/g, and
- a carbon content of 1 to 50% by mass of the silica gel-carbon composite before addition of other materials;
- and
- sulfur at least partially located inside pores of the silica gel-carbon composite.
3 more elements
Dependencies are inferred from the claim text.