Basf Corporation

Shenzhen Capchem Technology Co., Ltd.

Wentao Li

Kwo Young

Diana F Wong

Jean Nei

Martin W Payne

Lixin Wang

Multi-functional additives containing at least one solid electrolyte interface (SEI) forming group and at least one SEI modifying group are advantageously employed in electrolyte compositions for electrochemical devices. The SEI forming group may comprise an organic carbonate moiety and the SEI modifying group may comprise a heteroatom functional group such as a sulfur containing organic moiety. The electrochemical devices include lithium ion batteries.

Electrolyte compositions for electrochemical devices

A metal hydride battery comprising at least one negative electrode, at least one positive electrode, a casing having said electrodes positioned therein and an electrolyte composition, where the electrolyte composition comprises an ionic compound selected from the group consisting of protic acids, protic ammonium compounds, protic oxonium compounds, aprotic ammonium compounds, aprotic oxonium compounds, aprotic phosphonium compounds and alkali or alkali earth metal salts; or where the electrolyte composition comprises an ionic compound selected from the group consisting of alkali or alkali earth metal hydroxides and alkali or alkali earth metal alkoxides and an organic solvent; or where the electrolyte composition comprises an alkali metal hydroxide, water and one or more further components selected from the group consisting of organic solvents, further ionic compounds and additives; or where the electrolyte composition comprises an ionic compound selected from the group consisting of carboxylate compounds and carboxylic acids. Ionic compounds include ionic liquids and salts. Metal hydride batteries comprising certain electrolyte compositions have a nominal open-circuit voltage of from about 1.5 V to about 5.0 V.

Electrolytes and metal hydride batteries

A non-aqueous electrolytic solution for use in a lithium secondary battery has reduced or eliminated flammability and increased capacity retention. The electrolytic solution includes a lithium salt, a carbonate, a substituted phosphazene, a fluorinated solvent such as fluorinated carbonate, fluorinated ether, and fluorinated ester, and an organic phosphate or organic phosphonate such as fluorinated alkyl phosphate, fluorinated aromatic phosphate, fluorinated alkyl phosphonate, or fluorinated aromatic phosphonate.

Non-aqueous electrolytic solutions and electrochemical cells comprising the same

This invention relates to electrolytic solutions and secondary batteries containing same. The electrolytic solutions contain lithium bis (fluorosulfonyl) imide and asymmetric borates, asymmetric phosphates and mixtures thereof.

Use of lithium bis(fluorosulfonyl) imide (LiFSI) in non-aqueous electrolyte solutions for use with 4.2v and higher cathode materials for lithium ion batteries

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Solon, OH, United States of America

Wentao Li