ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

In situ synthesis of Ag/NiO derived from hetero-metallic MOF for supercapacitor application

Lin-Xia Zhou, Yuan-Yuan Yang, Hong-Lin Zhu, and Yue-Qing Zheng

Joint Laboratory for Environmental Test and Photocatalytic Research of Ningbo University-Zhejiang Zhonghao Applied Engineering Technology Institute Co., Ltd, Ningbo University, Ningbo, People’s Republic of China

E-mail: zhengyueqing@nbu.edu.cn

Received: 11 June 2020  Accepted: 12 November 2020

Abstract:

Nanocomposite metal oxides have been attracted great attention in the electrode material of supercapacitor. Herein, a novel Ag/Ni hetero-metallic complex with the hamburger-like structure was prepared, which was then calcined to form Ag/NiO nanocomposite via in-situ preparation. The in-situ formed Ag/NiO exhibits a very high capacitance of 1480 F g ⁻¹ at a current density of 0.6 A g⁻¹ in 1 M KOH solution, and the cycling stability was retained about 85% after 3000 cycles with the current of 5 A g⁻¹. The results showed that the in-situ formed Ag/NiO derived from hetero-metallic MOF possess high specific capacitance, which could provide a new effective strategy to improve the conductivity of metal oxides nanocomposite.

Keywords: Supercapacitor; Metal–organic frameworks; Nickel oxide; Ag doped; Specific capacitance

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01431-8

Chemical Papers 75 (5) 1795–1807 (2021)