Sponge-Like 3d Flower-Like Core-Shell Heterostructure Cuco2o4@Cuco2s4 as Advanced Electrodes for High-Performance Supercapacitor

33 Pages Posted: 31 Mar 2022

See all articles by Yunyun Wang

Yunyun Wang

Shanghai Institute of Technology

Xiaohui Yu

affiliation not provided to SSRN

Xing Huang

Shanghai Institute of Technology

Xiaomin Chen

Shanghai Institute of Technology

Jibo Jiang

Shanghai Institute of Technology

Sheng Han

Shanghai Institute of Technology - School of Chemical and Environmental Engineering

Abstract

The design of nanocomposite electrode materials with reasonable core-shell heterostructures is vital to upgrade the energy density and structural stability of supercapacitors. The unique sponge-like 3D core-shell CuCo2O4@CuCo2S4 (CCO@CCS-4) heterostructure was engineered and synthesized on a carbon cloth substrate by the hydrothermal method and the constant potential deposition method. The vertically aligned CCO nanocrystal structure has wide open channels for rapid electron / ion transport, while the externally interconnected CCS nanosheets as shell suppress the expansion of the internal CCO nanoneedles in the redox reaction and increase the active site of the reaction, not only spatially separating the redox reaction but also improving the stability of the composite. Benefiting from exclusive design and structure, the CCO@CCS-4 reveals excellent specific capacity (954.9 C g-1 ), together with ascendant cycle stability of only 6.77% loss after 10,000 cycles. Moreover, the assembled asymmetric supercapacitors device with the electrode material of sponge-like 3D flower-like CCO@CCS-4 and the activated carbon provide considerable energy density (92.06 Wh kg-1 at 799.99 W kg-1 ). These properties indicate that there is a great potential in the application of high-performance supercapacitors.

Keywords: Core-shell heterostructures, Bimetallic oxide, Double metal sulfide, Supercapacitors

Suggested Citation

Wang, Yunyun and Yu, Xiaohui and Huang, Xing and Chen, Xiaomin and Jiang, Jibo and Han, Sheng, Sponge-Like 3d Flower-Like Core-Shell Heterostructure Cuco2o4@Cuco2s4 as Advanced Electrodes for High-Performance Supercapacitor. Available at SSRN: https://ssrn.com/abstract=4071611 or http://dx.doi.org/10.2139/ssrn.4071611

Yunyun Wang

Shanghai Institute of Technology ( email )

China

Xiaohui Yu

affiliation not provided to SSRN ( email )

No Address Available

Xing Huang

Shanghai Institute of Technology ( email )

China

Xiaomin Chen

Shanghai Institute of Technology ( email )

China

Jibo Jiang (Contact Author)

Shanghai Institute of Technology ( email )

China

Sheng Han

Shanghai Institute of Technology - School of Chemical and Environmental Engineering ( email )

Shanhai
China

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
70
Abstract Views
229
Rank
610,576
PlumX Metrics