Three-dimensional nano assembly of nickel cobalt sulphide/polyaniline@polyoxometalate/reduced graphene oxide hybrid with superior lithium storage and electrocatalytic properties for hydrogen evolution reaction

Jagadis Gautam; Yi Liu; Jie Gu; Zhiyuan Ma; Bipeen Dahal; Aadil Nabi Chishti; Lubin Ni; Guowang Diao; Yongge Wei

doi:10.1016/j.jcis.2022.01.153

Three-dimensional nano assembly of nickel cobalt sulphide/polyaniline@polyoxometalate/reduced graphene oxide hybrid with superior lithium storage and electrocatalytic properties for hydrogen evolution reaction

J Colloid Interface Sci. 2022 May 15:614:642-654. doi: 10.1016/j.jcis.2022.01.153. Epub 2022 Jan 29.

Authors

Jagadis Gautam¹, Yi Liu², Jie Gu², Zhiyuan Ma², Bipeen Dahal³, Aadil Nabi Chishti², Lubin Ni⁴, Guowang Diao⁵, Yongge Wei⁶

Affiliations

¹ School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China; School of Advanced Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongbuk, 39177, Republic of Korea.
² School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China.
³ Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal.
⁴ School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China. Electronic address: lbni@yzu.edu.cn.
⁵ School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China. Electronic address: gwdiao@yzu.edu.cn.
⁶ Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, PR China. Electronic address: yonggewei@tsinghua.edu.cn.

PMID: 35123216
DOI: 10.1016/j.jcis.2022.01.153

Abstract

Engineering hierarchical nanostructures with enhanced charge storage capacity and electrochemical activity are vital for the advancement of energy devices. Herein, a highly ordered mesoporous three-dimensional (3D) nano-assembly of Nickel Cobalt Sulphide/Polyaniline @Polyoxometalate/Reduced Graphene Oxide (NiCo₂S₄/PANI@POM/rGO) is prepared first time via a simple route of oxidative polymerization followed by a hydrothermal method. Morphological analysis of the resulting hybrid reveals the sheet-like structures containing a homogeneous assembly of PANI@POM and NiCo₂S₄ on the graphene exterior maintaining huge structural integrity, large surface area and electrochemically active centres. The electrochemical analysis of the nanohybrid as the anode of the lithium-ion battery (LIB) has delivered ultra-huge reversible capacity of 735.5 mA h g^-1 (0.1 A g^-1 after 200 cycles), superb capacity retention (0.161% decay/per cycle at 0.5 A g^-1 for 1000 cycles), and significant rate capability (355.6 mA h g^-1 at 2 A g^-1). The hydrogen evolution reaction (HER) measurement also proves remarkable activity, extremely low overpotential and high durability. The extraordinary performance of the nanohybrid is due to the presence of abundant electroactive centres, high surface area and a large number of ion exchange channels. These outstanding results prove the advantages of a combination of NiCo₂S₄, graphene sheets, and PANI@POM in energy devices.

Keywords: Hydrogen evolution reaction; Lithium ion batteries; Nickel cobalt sulphide; Polyoxometalates; Reduced graphene oxide.