A facile electrospinning strategy for fibrous NixSy quantum dots @ N doped carbon nanofibers as high-performance Li-ion battery anodes. (June 2022)

• Record Type: Journal Article
• Authors: Guan, Mingyu; Li, Zhi; Ouyang, Jie; Li, Gangyong; Chen, Liang; Zhou, Minjie; He, Binhong; Xu, Wenyuan; Wang, Wei; Hou, Zhaohui
• Is Part Of: Materials today communications. Volume 31(2022)
• Publication Date: 2022-06
• Subjects: NixSy -- Quantum dots -- Electrospinning technique -- Nanofibers -- Lithium-ion battery; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2022.103652
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: With the advantage of high theoretical capacities, nickel sulfides (Nix Sy ) has become a kind of potential anode materials for high performance lithium-ion battery. Selecting an appropriate strategy to construct a stable structure for Nix Sy to confront the volume changes in the process of lithium storage is one of the meaningful topics. Here we propose a facile strategy to embed Nix Sy quantum dots into N-doped carbon nanofibers (NCNFs). The influence of the microstructure and crystal phase on lithium storage performance has been investigated systematically. The as-prepared fibrous Nix Sy quantum dots @ NCNFs expose excellent electrochemical performance and structure stability. Among them, the sample with the best performance can maintain a reversible capacity of 820.2 mAh g −1 after 300 cycles at a current density of 0.1 A g −1 . More importantly, it also shows an appropriate result when applied to commercial lithium-ion battery devices. This work can provide a powerful reference for the further development of lithium-ion battery. Graphical Abstract: A facile electrospinning approach was designed to synthesize Nix Sy quantum dots @ carbon nanofibers for high performance lithium storage anode. ga1