High capacity anode materials for lithium ion batteries

Title: High capacity anode materials for lithium ion batteries

High capacity silicon based anode active materials are described for lithium ion batteries. These materials are shown to be effective in combination with high capacity lithium rich cathode active materials. Supplemental lithium is shown to improve the cycling performance and reduce irreversible capacity loss for at least certain silicon based active materials. In particular silicon based active materials can be formed in composites with electrically conductive coatings, such as pyrolytic carbon coatings or metal coatings, and composites can also be formed with other electrically conductive carbon components, such as carbon nanofibers and carbon nanoparticles. Additional alloys with silicon are explored.

Inventors:: Lopez, Herman A.; Anguchamy, Yogesh Kumar; Deng, Haixia; Han, Yongbon; Masarapu, Charan; Venkatachalam, Subramanian; Kumar, Suject

Issue Date:: 2015-11-19

OSTI Identifier:: 1226230

Assignee:: Envia Systems, Inc. ARPA-E

Patent Number(s):: 9,190,694

Application Number:: 12/938,951

Contract Number:: AR0000034

Resource Relation:: Patent File Date: 2010 Nov 03

Research Org:: Envia Systems, Inc., Newark, CA (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE

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