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Li T, Chen X, Pang Y, Li X, Yue H, Yin Y, Li B, Yang Z, Yang S, Dong H. Construction of Co 1-x S Nanoparticles Embedding in N-Doped Amorphous Carbon@Graphene with Enhanced Li-Ion Storage. Small 2023:e2306369. [PMID: 38054776 DOI: 10.1002/smll.202306369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/30/2023] [Indexed: 12/07/2023]
Abstract
Cobalt sulfide is deemed a promising anode material, owing to its high theoretical capacity (630 mAh g-1 ). Due to its low conductivity, fast energy decay, and the huge volume change during the lithiation process limits its practical application. In this work, a simple and large-scale method are developed to prepare Co1-x S nanoparticles embedding in N-doped carbon/graphene (CSCG). At a current density of 0.2 C, the reversible discharge capacity of CSCG maintains 937 mAh g-1 after 200 cycles. The discharge capacity of CSCG maintains at 596 mAh g-1 after 500 cycles at the high current density of 2.0 C. The excellent performance of CSCG is due to its unique structural features. The addition of rGO buffered volume changes while preventing Co1-x S from crushing/aggregating during the cycle, resulting in multiplier charge-discharge and long cycle life. The N-doped carbon provides a simple and easy way to achieve excellent performance in practical applications. Combined with density functional theory calculation, the presence of Co-vacancies(Co1-x ) increases more active site. Moreover, N-doping carbon is beneficial to the improve adsorption energy. This work presents a simple and effective structural engineering strategy and also provides a new idea to improve the performance of Li-ion batteries.
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Affiliation(s)
- Tongjun Li
- School of Physics, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- National and Local Joint Engineering Laboratory of Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Zhengzhou University of Technology College of Basic Science, 18 Yingcai Street, Huiji District, Zhengzhou, Henan, 450011, P. R. China
| | - Xuanchen Chen
- National and Local Joint Engineering Laboratory of Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
| | - Yudong Pang
- School of Physics, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
| | - Xiangnan Li
- School of Physics, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- National and Local Joint Engineering Laboratory of Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
| | - Hongyun Yue
- National and Local Joint Engineering Laboratory of Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
| | - Yanhong Yin
- National and Local Joint Engineering Laboratory of Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
| | - Baojun Li
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Zongxian Yang
- School of Physics, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
| | - Shuting Yang
- School of Physics, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- National and Local Joint Engineering Laboratory of Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, P. R. China
| | - Hongyu Dong
- National and Local Joint Engineering Laboratory of Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, 46 Jianshe Road, Xinxiang, 453007, P. R. China
- Zhengzhou University of Technology College of Basic Science, 18 Yingcai Street, Huiji District, Zhengzhou, Henan, 450011, P. R. China
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