Nanograf Corporation

Kathryn Hicks

Cary Michael Hayner

Joshua J Lau

Seonbaek Ha

Christine A Frysz

Aaron Yost

Pitawat Mahawattanangul

An electrode material for a lithium ion secondary battery and method of forming the same, the electrode material including composite particles, each composite particle including a primary particle including thermally disproportionated silicon oxide, and an envelope disposed on the surface of the primary particle. The envelope includes turbostratic carbon having a Raman spectrum having: a D band having a peak intensity (I) at wave number between 1330 cmand 1360 cm; a G band having a peak intensity (I) at wave number between 1530 cmand 1600 cm; and a 2D band having a peak intensity (I) at wave number between 2650 cmand 2750 cm, wherein a ratio of I/Iranges from greater than zero to about 1.0, and a ratio of I/Iranges from about 0.4 to about 2.

Thermally disproportionated anode active material including turbostratic carbon coating

Active material composite particles, an electrode including the composite particles, a lithium ion secondary battery including the electrode, and method of forming the same, in which the composite particles each include a core particle including an alkali metal or an alkali earth metal silicate, and a coating disposed on the surface of the core particle. The coating includes turbostratic carbon having a Raman spectrum having: a D band having a peak intensity (I) at wave number between 1330 cmand 1360 cm; a G band having a peak intensity (I) at wave number between 1580 cmand 1600 cm; and a 2D band having a peak intensity (I) at wave number between 2650 cmand 2750 cm, wherein a ratio of I/Iranges from greater than zero to about 1.1, and a ratio of I/Iranges from about 0.4 to about 2.

Graphene-containing metalized silicon oxide composite materials

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Chicago, IL, United States of America

Kathryn Hicks