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Wang J, Zhou L, Guo D, Wang X, Fang G, Chen X, Wang S. Flower-Like NiS 2 /WS 2 Heterojunction as Polysulfide/sulfide Bidirectional Catalytic Layer for High-Performance Lithium-Sulfur Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206926. [PMID: 36658717 DOI: 10.1002/smll.202206926] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/15/2022] [Indexed: 06/17/2023]
Abstract
The slow sulfur oxidation-reduction kinetics are one of the key factors hindering the widespread use of lithium-sulfur batteries (LSBs). Herein, flower-shaped NiS2 -WS2 heterojunction as the functional intercalation of LSBs is successfully prepared, and effectively improved the reaction kinetics of sulfur. Flower-like nanospheres composed of ultra-thin nanosheets (≤10 nm) enhance quickly transfer of mass and charge. Meanwhile, the heterostructures simultaneously serve as an electron receptor and a donor, thereby simultaneously accelerating the bidirectional catalytic activity of reduction and oxidation reactions in the LSBs. In addition, the adsorption experiment, chemical state analysis of elements before and after the reaction and theoretical calculation have effectively verified that NiS2 -WS2 heterojunction nanospheres optimize the adsorption capacity and bidirectional catalytic effect of polysulfides. The results show that the initial discharge capacity of NiS2 -WS2 functional intercalation is as high as 1518.7 mAh g-1 at 0.2 C. Even at a high current density of 5 C, it still shows a discharge specific capacity of 615.7 mAh g-1 , showing excellent rate performance. More importantly, the capacity is 258.9 mAh g-1 after 1500 cycles at 5 C, and the attenuation per cycle is only 0.039%, and the Coulomb efficiency remains above 95%.
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Affiliation(s)
- Jinyi Wang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Ling Zhou
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Daying Guo
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Xueyu Wang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Guoyong Fang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Xi'an Chen
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Shun Wang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
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Huang ZX, Zhang XL, Zhao XX, Zhao YY, Aravindan V, Liu YH, Geng H, Wu XL. Electrode/electrolyte additives for practical sodium-ion batteries: a mini review. Inorg Chem Front 2023. [DOI: 10.1039/d2qi02237k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Problems of practical sodium-ion batteries.
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Affiliation(s)
- Zhi-Xiong Huang
- MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, Jilin 130024, P. R. China
- School of Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu 215500, China
| | - Xue-Li Zhang
- Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China
| | - Xin-Xin Zhao
- Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China
| | - Yuan-Yuan Zhao
- Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China
| | - Vanchiappan Aravindan
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India
| | - Yu-Hang Liu
- Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China
| | - Hongbo Geng
- School of Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu 215500, China
| | - Xing-Long Wu
- MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, Jilin 130024, P. R. China
- Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China
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