Ni-soc-MOF derived carbon hollow sphere encapsulated Ni3Se4 nanocrystals for high-rate supercapacitors

Jing Wang; Yue Zhu; Shuo Li; Shengxian Zhai; Ning Fu; Yongsheng Niu; Shaogang Hou; Jiahuan Luo; Shichun Mu; Yunhui Huang

doi:10.1039/d2cc01951e

Ni-soc-MOF derived carbon hollow sphere encapsulated Ni₃Se₄ nanocrystals for high-rate supercapacitors

Chem Commun (Camb). 2022 Aug 4;58(63):8846-8849. doi: 10.1039/d2cc01951e.

Authors

Jing Wang¹, Yue Zhu¹, Shuo Li¹, Shengxian Zhai¹, Ning Fu¹, Yongsheng Niu¹, Shaogang Hou¹, Jiahuan Luo¹, Shichun Mu^{2

3}, Yunhui Huang⁴

Affiliations

¹ School of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, 455000, P. R. China. luojiahuan2008@ayit.edu.cn.
² State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China. msc@whut.edu.cn.
³ Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu hydrogen Valley, Foshan, 528200, China.
⁴ State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.

PMID: 35849002
DOI: 10.1039/d2cc01951e

Abstract

Carbon hollow sphere encapsulated Ni₃Se₄ (Ni₃Se₄@CHS) nanocrystals are prepared using the Ni-soc-MOF by pyrolysis and further selenization. Ni₃Se₄@CHS exhibits a capacitance of 1720 F g^-1 at 1 A g^-1 and a capacitance retention of 97% after 6000 cycles at 5 A g^-1. Moreover, the asymmetric supercapacitor of Ni₃Se₄@CHS//AC displays a wide potential window of 1.6 V, an energy density of 45.2 W h kg^-1 at a power density of 800 W kg^-1, and excellent cycling stability (89% capacitance retention) after 5000 cycles. Overall, this work establishes a significant step to synthesize a new carbon-based material with appreciable capacitance and long cycling durability for potential applications in energy storage and beyond.