Method for preparing supercapacitor electrode material through cobalt-nickel bimetallic oxide and graphene

A double metal oxide and supercapacitor technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of toxicity, influence on the electrochemical performance of materials, expensive organic solvents, etc., and achieve broad application prospects, Good for electrochemical performance and good uniformity
CN106935419AInactive Publication Date: 2017-07-07SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Publication Date
2017-07-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing supercapacitor electrode material through cobalt-nickel bimetallic oxide and graphene. According to the method, cobalt-nickel bimetallic hydroxide is stripped in deionized water, and graphene oxide having negative charges and the cobalt-nickel bimetallic hydroxide having positive charges are heterogeneously assembled so that compounding of the graphene oxide and the cobalt-nickel bimetallic hydroxide at the nanoscale can be realized. The reaction is controllable, and the prepared layered cobalt-nickel oxide and graphene nanocomposite material has great uniformity and has high specific capacitance, great rate performance and ultra-long cycle life when it is used for the supercapacitor electrode material so as to be wide in application prospect.
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Description

technical field

[0001] The invention belongs to the field of preparation of supercapacitor materials, in particular to a method for preparing supercapacitor electrode materials from cobalt-nickel double metal oxide and graphene.

[0002] technical background

[0003] Composite materials can take advantage of the synergy between single components to exhibit high electrochemical performance and are widely used in supercapacitors (Energy Environ.Sci., 2015, 8:702-730; Energy and Environmental Science, 2015 Vol. 8: 702 pages) (NanoEnergy, 2016, 19:210-221; Nano Energy, 2016, Vol. 19: 210).

[0004] Graphene, a new type of carbon material with a two-dimensional planar single atomic layer structure, has shown great promise in the field of supercapacitors because of its unique characteristics of high specific surface area, high electrical conductivity, high mechanical strength, and good flexibility. Great application potential (Nat. Mater., 2011, 10:424-428; Natural Materials, 2011...

Claims

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