CPC C08G 8/22 (2013.01) [C01B 32/05 (2017.08); C01B 32/336 (2017.08); H01G 11/34 (2013.01); H01G 11/44 (2013.01); H01M 4/133 (2013.01); H01M 4/14 (2013.01); H01M 4/36 (2013.01); H01M 4/587 (2013.01); H01M 4/96 (2013.01); H01M 10/054 (2013.01); H01M 10/0525 (2013.01); H01M 12/08 (2013.01); H01M 4/625 (2013.01); H01M 10/06 (2013.01); H01M 12/06 (2013.01); Y02E 60/13 (2013.01)] | 22 Claims |
1. A high purity electrode material comprising a plurality silicon-carbon composite particles, wherein the silicon-carbon composite particles comprise:
(i) a carbon particle having micropores;
(ii) a first electrochemical modifier comprising silicon, wherein the silicon is disposed within the pores of the carbon particle; and
(iii) a second electrochemical modifier comprising carbon, wherein the carbon is disposed on the surface of the carbon particle,
and wherein:
the carbon particle has mean particle diameter of less than 1 mm;
the carbon particle has a specific surface area of at least 400 m2/g; and
the carbon particle has less than 500 ppm of all atoms having a molecular weight between 11 and 92, as measured by photon induced x-ray emissions.
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