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Liu J, Wang J, Zhu L, Chen X, Ma Q, Xu Z, Sun S, Wang N, Chai Q, Yan W. Hollow urchin-like Mn 3O 4 microspheres as an advanced sulfur host for enabling Li-S batteries with high gravimetric energy density. J Colloid Interface Sci 2022; 606:1111-1119. [PMID: 34487931 DOI: 10.1016/j.jcis.2021.08.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/12/2021] [Accepted: 08/15/2021] [Indexed: 12/17/2022]
Abstract
Lithium-sulfur (Li-S) batteries are considered to be promising candidates for next-generation storage systems. However, the practical applications are still hindered by the severe capacity decay, mainly caused by the large volume change, polysulfide shuttle and sluggish sulfur conversion kinetics. Herein, hollow urchin-like Mn3O4 (HU-Mn3O4) microspheres as sulfur hosts have been synthesized by the hydrothermal method and calcination treatment, aiming to prevent the polysulfide dissolution (benefiting from the strong polysulfide anchoring effect of Mn3O4) and alleviate the volume expansion of sulfur (benefiting from the special hollow structure). Meanwhile, the urchin-like thorny surface also facilitates the rapid ion/electron transfer and the abundant active sites for the fast sulfur redox kinetics. When used as the sulfur host in Li-S batteries, the S@HU-Mn3O4 cathode delivers a high initial capacity of 1137.4 mAh g-1 with a slow capacity decay of 0.042% after 200 cycles at 0.2 C. Even under the conditions of lean electrolyte (E/S = 7 mL g-1) and low N/P ratio (N/P = 2.1), the S@HU-Mn3O4 cathode still enables a stable cycling performance with a high gravimetric energy density (202 Wh kg cell-1), demonstrating its great potential in the development of future practical Li-S battery materials.
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Affiliation(s)
- Jianwei Liu
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China; Zhejiang Research Institude of Xi'an Jiaotong University, 328 Wenming Road, Hangzhou 310000, China
| | - Jianan Wang
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China; Zhejiang Research Institude of Xi'an Jiaotong University, 328 Wenming Road, Hangzhou 310000, China.
| | - Lei Zhu
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China; School of Physics and Electrical Engineering, Weinan Normal University, Chaoyang Street, Weinan 714099, China; Zhejiang Research Institude of Xi'an Jiaotong University, 328 Wenming Road, Hangzhou 310000, China
| | - Xin Chen
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China; Zhejiang Research Institude of Xi'an Jiaotong University, 328 Wenming Road, Hangzhou 310000, China
| | - Qianyue Ma
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China
| | - Zhicheng Xu
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China
| | - Shiyi Sun
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China
| | - Ning Wang
- Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, China
| | - Qinqin Chai
- Xi'an Hantang Analysis & Test Co., Ltd., Xi'an 710201, China
| | - Wei Yan
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, China.
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