Viologen compound, method for producing the same, negative electrode active material, and electricity storage device
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United States of America Patent
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Dec 29, 2020
Grant Date -
Jun 13, 2019
app pub date -
Nov 23, 2018
filing date -
Dec 8, 2017
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Abstract
A viologen compound is a crystalline compound including a heterocyclic moiety in which a carboxylate of an alkali metal is bound directly or indirectly to both ends of a basic skeleton containing 4,4□-bipyridinium and an anionic moiety that pairs with 4,4□-bipyridinium. The viologen compound can be used, for example, as a negative electrode active material for an electricity storage device including a negative electrode containing the negative electrode active material, a positive electrode containing a positive electrode active material capable of giving and receiving anions, and an ion-conducting medium that is disposed between the positive electrode and the negative electrode and conducts anions.
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