Building hybrid structure of monolayered S-depleted Mo-S nanocrystals and 3D graphene towards promising aqueous supercapacitor applications

Longsheng Zhong; Yuancheng Pi; Yu Gao; Yao He; Lijing Wang; Dezheng Liu; Liangxu Lin

doi:10.1088/1361-6528/ad02a5

Building hybrid structure of monolayered S-depleted Mo-S nanocrystals and 3D graphene towards promising aqueous supercapacitor applications

Nanotechnology. 2023 Oct 30;35(3). doi: 10.1088/1361-6528/ad02a5.

Authors

Longsheng Zhong^{1

2}, Yuancheng Pi^{1

2}, Yu Gao², Yao He², Lijing Wang², Dezheng Liu¹, Liangxu Lin²

Affiliations

¹ Hubei Longzhong Laboratory, Hubei University of Arts and Science, Xiangyang 441000, Hubei, People's Republic of China.
² Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou 350117, Fujian, People's Republic of China.

PMID: 37827143
DOI: 10.1088/1361-6528/ad02a5

Abstract

Two-dimensional (2D) 1H molybdenum disulfide (1H-MoS₂) is hard to be directly used in energy storage devices due to its inert basal plane and unfavorable 2D stacking. This work demonstrated how the basal plane of 1H MoS₂nanocrystals (NCs) can be activated to offer doubled specific capacitance by simple surface S depletions. Building on the expanded graphene with three-dimensional (3D) structures, as-prepared NCs were chemically grafted on the graphene surface to deliver stable energy storage and high capacitance, which overcame above challenges of 1H-MoS₂. Aside from the mostly focused metastable phase, this work confirmed that the stable 1H Mo-S material is also promising in energy storage applications.

Keywords: hybrid structure; molybdenum sulfide; supercapacitors; surface activation; two-dimensional.