US 12,155,062 B2
Electrode active material for non-aqueous secondary battery comprising carbon material modified with one-electron oxidant and method for producing the same
Takefumi Sumitomo, Anan (JP); Zenji Okabayashi, Tokushima (JP); Mari Yamamoto, Naruto (JP); Hiroaki Takahashi, Yokohama (JP); Akihiro Tokai, Yokohama (JP); and Masahito Kumakura, Anan (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Appl. No. 17/310,386
Filed by NICHIA CORPORATION, Anan (JP)
PCT Filed Jan. 30, 2020, PCT No. PCT/JP2020/003508
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/158885, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-017325 (JP), filed on Feb. 1, 2019.
Prior Publication US 2022/0093914 A1, Mar. 24, 2022
Int. Cl. H01M 4/525 (2010.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for producing an electrode active material for a non-aqueous secondary battery, the method comprising:
contacting a carbon material containing at least one selected from the group consisting of graphene, a carbon nanotube and carbon black with a one-electron oxidant having an oxidation-reduction potential of 0.2 V or more and 1.9 V or less to obtain at least one modified carbon material, and
contacting the at least one modified carbon material with alkali-metal-transition-metal composite oxide particles,
wherein the one-electron oxidant is a salt containing at least one selected from the group consisting of a carbocation and an aminium cation.