CC-NiO-CuCoS composite material as well as preparation method and application thereof

A composite material, cc-nio-cucos technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problem of rapid cycle performance decay, and achieve the effects of accelerating diffusion, improving stability, and improving supercapacitor performance.

Active Publication Date: 2021-02-26
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This technology also has the problem of fast decay in terms of cycle performance

Method used

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  • CC-NiO-CuCoS composite material as well as preparation method and application thereof
  • CC-NiO-CuCoS composite material as well as preparation method and application thereof
  • CC-NiO-CuCoS composite material as well as preparation method and application thereof

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Embodiment 1

[0057] A kind of preparation method of CC-NiO-CuCoS composite material, its preparation method comprises the following steps:

[0058] Step 1) Activation of CC, the CC with a size of 2cm X 2cm was ultrasonically cleaned in 40mL of 99% ether solution, 40mL of absolute ethanol, and 40mL of deionized water for 15min, and then cleaned in 40mL of 69% concentrated Boil in nitric acid in a water bath at 80-90°C for 4 hours for activation. After the water bath is completed, wash with deionized water and absolute ethanol three times respectively, and dry at 60°C for 12 hours to obtain the activated CC;

[0059] Step 2) The preparation of CC-NiO composite material, the ratio of the amount of nickel nitrate hexahydrate, ammonium fluoride, and urea is 1:6:12, and the activated CC obtained in step 1 is mixed with nickel nitrate hexahydrate, fluorine Put ammonium chloride and urea into 60mL water together, and carry out hydrothermal reaction in an autoclave under the condition of reaction t...

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Abstract

The invention discloses a CC-NiO-CuCoS composite material. The CC-NiO-CuCoS composite material is composed of CC, NiO and CuCo2S4, wherein CC is a base material, the microstructure of CC is of a fibrous structure, and CC is used for providing a substrate, so NiO nanosheets cannot be stacked, and the conductive substrate is beneficial to ultra-high-speed transportation of electrons; the microstructure of NiO is a nanosheet structure, and NiO is loaded on the surface of CC and is used for providing extra pseudocapacitance; and the microstructure of CuCo2S4 is a nano-particle structure, and CuCo2S4 is attached to the surfaces of the CC and NiO nanosheets, and is used for stabilizing the sheet structure of NiO and covering a part of exposed CC. According to the invention, the CC-NiO-CuCoS composite material is prepared from CC, nickel nitrate hexahydrate, ammonium fluoride, urea, cupric acetate monohydrate, cobalt acetate tetrahydrate and thiourea are used as initial raw materials throughtwo-step hydrothermal preparation. The preparation method comprises the following steps of (1) cleaning and activation of CC; (2) preparation of a CC-NiO composite material; and (3) preparation of theCC-NiO-CuCo2S4 composite material. When the composite material is used as a supercapacitor electrode material, specific capacitance is 840 F g<-1>, and cycling stability after 3000 cycles is 100%.

Description

technical field [0001] The invention relates to the preparation technology of carbon cloth as a base material and metal oxide, in particular to a carbon-based supercapacitor (SCs) composite material and its preparation method and application. Background technique [0002] Supercapacitors (SCs) have attracted extensive attention due to their superior power density, long-term cycle stability, and fast charge-discharge rates as power sources for portable electronics and electric / hybrid vehicles. As one of the key components of SCs, electrode materials play an important role in improving their electrochemical performance. To meet the increasing energy / power density demands, great efforts have been devoted to finding advanced electrode materials. [0003] Constructing self-supporting arrays on conductive substrates is an effective approach to improve the electrochemical performance of transition metal oxides as electrode materials, which not only reduces the agglomeration of act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/89C04B41/52H01G11/24H01G11/30H01G11/32H01G11/46
CPCC04B41/89C04B41/52C04B41/009H01G11/24H01G11/30H01G11/32H01G11/46C04B41/5027C04B41/4539C04B41/0072C04B41/5014C04B35/83Y02E60/13
Inventor 向翠丽王顺香邹勇进徐芬孙立贤
Owner GUILIN UNIV OF ELECTRONIC TECH
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