A novel rose-with-thorn ternary MoS2@carbon@polyaniline nanocomposite as a rechargeable magnesium battery cathode displaying stable capacity and low-temperature performance

Jinyun Liu; Yan Zhong; Xuelian Li; Tongxin Ying; Tianli Han; Jinjin Li

doi:10.1039/d1na00445j

A novel rose-with-thorn ternary MoS₂@carbon@polyaniline nanocomposite as a rechargeable magnesium battery cathode displaying stable capacity and low-temperature performance

Nanoscale Adv. 2021 Aug 20;3(19):5576-5580. doi: 10.1039/d1na00445j. eCollection 2021 Sep 28.

Authors

Jinyun Liu¹, Yan Zhong¹, Xuelian Li¹, Tongxin Ying¹, Tianli Han¹, Jinjin Li²

Affiliations

¹ Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 P. R. China jyliu@ahnu.edu.cn hantianli@ahnu.edu.cn.
² National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano-electronics, Shanghai Jiao Tong University Shanghai 200240 P. R. China lijinjin@sjtu.edu.cn.

Abstract

Developing high-performance cathode materials for magnesium (Mg) batteries is of great significance. Here, a novel rose-with-thorn ternary MoS₂@C@polyaniline (PANI) nanocomposite composed of carbon and PANI nanoneedles co-coated on rose-like MoS₂ is developed. The conductive PANI needles on the surface of MoS₂ improve the conductivity, and the inner MoS₂ is wrapped by a carbon layer which is beneficial for the aniline coating. The MoS₂@C@PANI-based Mg battery cathode displays a good capacity of 114 mA h g^-1 after 100 cycles, and a recoverable rate-performance after repeated measurements. In addition, a stable capacity of 105 mA h g^-1 when cycled at a low temperature of -5 °C is also achieved, indicating good potential for applications.