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US 9,755,227 B2Granted
Method for forming a reduced graphene oxide/metal sulfide composite and its use as an anode for batteries
AssigneesNanyang Technological University, Yissum Research Development Company of the Hebrew University of Jerusalem
InventorsYau Wai Denis Yu, Sudip Kumar Batabyal, Ovadia Lev, Jenny Gun, Petr V. Prikhodchenko
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Abstract
The invention relates to anode materials suitable for use in batteries, such as lithium ion batteries and sodium ion batteries. In particular, the anode material is a reduced graphene oxide/metal sulfide composite. Methods for forming the reduced graphene oxide/metal sulfide composite are also disclosed.
Claims12
A method for forming a reduced grapheme oxide/metal sulfide composite, comprising:
- adding a dispersion comprising graphene oxide to hydrogen peroxide solution;
- adding one or more metal complex or salt solution to the dispersion;
- precipitating one or more peroxide-rich sol onto the graphene oxide surface to form one or more peroxide rich-metal oxide precursor-supported grapheme oxide;
- treating the supported graphene oxide with a sulfur source;
- heating the treated supported graphene oxide at a first temperature to form a powder;
- and
- heating the powder at a second temperature to form the reduced graphene oxide/metal sulfide composite,
- wherein adding one or more metal complex or salt solution to the dispersion futher comprises adding one or more doping metal precursor to the dispersion and wherein the metal of the one or more doping metal precursor is lithium or sodium.
5 more elements
Dependencies are inferred from the claim text.