CPC C25B 1/00 (2013.01) [C01B 32/19 (2017.08); C01B 32/198 (2017.08); C25B 9/19 (2021.01); C25B 9/40 (2021.01); C25B 11/043 (2021.01); H01B 1/04 (2013.01); H01M 4/587 (2013.01); H01M 4/625 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01B 2204/04 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01); C01P 2004/24 (2013.01); Y10S 977/734 (2013.01); Y10S 977/842 (2013.01)] | 10 Claims |
1. An electrode comprising:
a reversibly hydrogenated graphite comprising a plurality of flakes having
at least one flake in 10 having a size in excess of 10 square micrometers,
a coefficient of determination value of 2D single peak fitting of μ-Raman spectra of the reversibly hydrogenated graphite after thermal treatment in inert atmosphere at 2 mbar and 800° C., collected at 532 nm excitation with a resolution better than 1.8 reciprocal centimeters, of larger than 0.99 for more than 50% of the spectra, and
a defect density characteristic of μ-Raman spectra of the hydrogenated graphite collected at 532 nm excitation with a resolution better than 1.8 reciprocal centimeters and an excitation power below 2 mW at the focus of an 100× objective having an average D/G area ratio being between 0.2 and 4, wherein at least 60% of the defects are reversible hydrogenation of sp3-hybridized carbon sites away from the edges of the flakes.
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