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US 10,320,001 B2Granted
Secondary cell
AssigneeRicoh Company, Ltd.
InventorMasayoshi Nomura
Life of this patent
Estimating the term…
Abstract
To provide a secondary cell including an electrode active material that is a compound represented by General Formula (1) below: where n is a natural number of from 4 through 8, a is a natural number of from 1 through 4, R1 and R2 may be identical to or different from each other and are each a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group that may have a substituent, Y is a substituent, and b is an integer of from 0 through 3 and a+b is 4 or less in General Formula (1).
Claims11
A secondary cell comprising:
- an electrode active material that is a compound represented by General Formula (1) below:
- where n is a natural number of from 4 through 8, a is a natural number of from 1 through 4, R1 and R2 may be identical to or different from each other and are each a hydrogen atom, an alkyl group, or an aromatic hydrocarbon group that may have a substituent, Y is a substituent, and b is an integer of from 0 through 3 and a+b is 4 or less in General Formula (1),
- wherein when n ranges from 4 to 6:
- b is at least 1 and at least one Y in General Formula (1) is a substituent selected from the group consisting of a halogen atom, an alkoxy group, an aryl group, —SO3X where X is a hydrogen atom or an alkali metal, a sulfonic acid ester group, a carbamoyl group, a formyl group, a carboxyl group, and a carboxylic acid ester group;
- or
- at least one of R1 and R2 within General Formula (1) is an alkyl group, or an aromatic hydrocarbon group that may have a substituent.
3 more elements
Dependencies are inferred from the claim text.