ZIF-derived sulfides with tremella-like core-shell structure for high performance supercapacitors

Yuhan Cui; Jing Sun; Lijie Zhao; Yining Wang; Jiawei Wang; Yunpeng Wu; Wenxi Zhang; Yuzhe Tang; Zengyuan Fan; Zhongmin Su

doi:10.1016/j.jcis.2024.01.102

ZIF-derived sulfides with tremella-like core-shell structure for high performance supercapacitors

J Colloid Interface Sci. 2024 Apr 15:660:1010-1020. doi: 10.1016/j.jcis.2024.01.102. Epub 2024 Jan 18.

Authors

Yuhan Cui¹, Jing Sun², Lijie Zhao³, Yining Wang¹, Jiawei Wang¹, Yunpeng Wu¹, Wenxi Zhang¹, Yuzhe Tang¹, Zengyuan Fan¹, Zhongmin Su⁴

Affiliations

¹ School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Jilin Provincial International Joint Research Center of Photo-functional Materials and Chemistry, Changchun 130022, China.
² School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Jilin Provincial International Joint Research Center of Photo-functional Materials and Chemistry, Changchun 130022, China. Electronic address: sj-cust@126.com.
³ College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China. Electronic address: zlj6818@163.com.
⁴ School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Jilin Provincial International Joint Research Center of Photo-functional Materials and Chemistry, Changchun 130022, China; State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130021, China. Electronic address: zmsu@nenu.edu.cn.

PMID: 38290324
DOI: 10.1016/j.jcis.2024.01.102

Abstract

Metal-organic frameworks (MOFs) have emerged as promising active electrode materials in supercapacitors for its controllable porous structure and excellent physio-chemical properties. However, the poor conductivities keep it from achieving its full capacitance potential, which greatly limits its practical application. Here, a facile pathway is reported to fabricate the GO/Ni₂ZnS₄@NiCo₂S₄ composite with large specific surface area and favorable electrical conductivity. Thanks to the novel tremella-like core-shell structure and high-efficient synergistic effects among multi-components, the designed GO/Ni₂ZnS₄@NiCo₂S₄ electrode shows a high specific capacitance of 2284 F/g at 1 A/g. Furthermore, the asymmetric supercapacitor fabricated by coupling GO/Ni₂ZnS₄@NiCo₂S₄ positive electrode with biological carbon negative electrode achieves a remarkable energy density of 120 Wh kg^-1 at a power density of 750 W kg^-1.

Keywords: Bimetallic-ZIF; Core–shell structure; GO; Sulfidation; Supercapacitor.