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Fan H, Zhou G, Li J, Zhao Y, Bai L, Chang H, Zheng R, Wang Z, Liu Y, Sun H. Enhanced Interfacial Magnetization is Responsible for the Negative Capacity Fading of Cobalt Ditelluride Anodes for Lithium Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300490. [PMID: 37035983 DOI: 10.1002/smll.202300490] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/04/2023] [Indexed: 06/19/2023]
Abstract
In lithium-ion batteries (LIBs), the stabilized capacities of transition metal compound anodes usually exhibit higher values than their theoretical values due to the interfacial charge storage, the formation of reversible electrolyte-derived surface layer, or interfacial magnetization. But the effectively utilizing the mechanisms to achieve novel anodes is rarely explored. Herein, a novel nanosized cobalt ditelluride (CoTe2 ) anodes with ultra-high capacity and long term stability is reported. Electrochemical tests show that the lithium storage capacity of the best sample reaches 1194.7 mA h g-1 after 150 cycles at 0.12 A g-1 , which increases by 57.8% compared to that after 20 cycles. In addition, the sample offers capacities of 546.6 and 492.1 mA h g-1 at 0.6 and 1.8 A g-1 , respectively. During cycles, CoTe2 particles (average size 20 nm) are gradually pulverized into the smaller nanoparticles (<3 nm), making the magnetization more fully due to the larger contact area of Co/Li2 Te interface, yielding an increased capacity. The negative capacity fading is observed, and verified by ex situ structural characterizations and in situ electrochemical measurements. The proposed strategy can be further extended to obtain other high-performance ferromagnetic metal based electrodes for energy storage applications.
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Affiliation(s)
- Huilin Fan
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110004, P. R. China
| | - Guangyu Zhou
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110004, P. R. China
| | - Jinliang Li
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110004, P. R. China
| | - Yanyan Zhao
- The Rowland Institute at Harvard, 100 Edwin H Land Blvd, Cambridge, MA, 02142, USA
| | - Lu Bai
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Huaiqiu Chang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Runguo Zheng
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110004, P. R. China
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
- Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
| | - Zhiyuan Wang
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110004, P. R. China
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
- Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
| | - Yanguo Liu
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110004, P. R. China
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
- Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
| | - Hongyu Sun
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
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Zhu Z, Chen Y, Liu F, Wang H, Yu R, He D, Wu J. Al-doped Nb2O5/carbon micro-particles anodes for high rate lithium-ion batteries. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Yu Y, Jin Y, Hasan N, Cao S, Wang X, Ming H, Shen P, Zheng R, Sun H, Ahmad M. Tuning the interface interaction between Nb2O5 nanosheets/graphene for high current rate and long cyclic lithium-ion batteries. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Fan H, Liu C, Lan G, Mao P, Zheng R, Wang Z, Liu Y, Sun H. Uniform carbon coating mediated multiphase interface in submicron sized rodlike cobalt ditelluride anodes for high-capacity and fast lithium storage. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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