|本期目录/Table of Contents|

[1]房彬,徐富良,江永明,等.纳米硫化锂/碳复合正极材料的制备及其电化学性能[J].浙江理工大学学报,2023,49-50(自科一):43-49.
 FANG Bin,XU Fuliang,JIANG Yongming,et al.Fabrication of nanoscale Li 2S/cabon composite  cathode and its electrochemical performance[J].Journal of Zhejiang Sci-Tech University,2023,49-50(自科一):43-49.
点击复制

纳米硫化锂/碳复合正极材料的制备及其电化学性能()
分享到:

浙江理工大学学报[ISSN:1673-3851/CN:33-1338/TS]

卷:
第49-50卷
期数:
2023年自科第一期
页码:
43-49
栏目:
出版日期:
2023-03-10

文章信息/Info

Title:
Fabrication of nanoscale Li 2S/cabon composite  cathode and its electrochemical performance
文章编号:
1673-3851 (2023) 01-0043-07
作者:
房彬徐富良江永明叶方敏
浙江理工大学理学院,杭州 310018
Author(s):
FANG Bin XU Fuliang JIANG Yongming YE Fangmin
School of Science, Zhejiang Sci-Tech University, Hangzhou 310018, China
关键词:
硫化锂正极三硫化二锂前驱体碳纳米管聚乙烯吡咯烷酮锂硫电池空气稳定性
分类号:
TM912
文献标志码:
A
摘要:
为了提高硫化锂正极的倍率性能、抑制多硫化锂穿梭并降低成本,以三硫化二锂作为硫化锂的前驱体,聚乙烯吡咯烷酮和碳纳米管作为碳源,经高温处理制备纳米硫化锂/碳复合材料,以此作为锂硫电池的正极材料。采用扫描电子显微镜、X射线衍射仪、热重分析仪对该复合材料的形貌、结构以及组成进行表征,并进行电化学性能测试。结果表明:制备的纳米硫化锂/碳复合正极材料中,纳米硫化锂分散均匀并被热分解的碳包覆,合成的三硫化二锂前驱体在空气中具有一定的稳定性,能够降低纳米硫化锂的生产成本;将纳米硫化锂/碳复合正极材料用于锂硫电池时,在0 07 C(1 C=1166 mA/g)倍率下初始放电比容量达910 mAh/g,在1 00 C高倍率下循环150次后,可逆容量保持在484 mAh/g,这表明纳米硫化锂/碳的活性物质利用率较高、多硫化锂穿梭较弱。采用三硫化二锂前驱体制备高性能硫化锂复合材料,工艺成本低,有助于硫化锂正极材料的实际应用。

参考文献/References:

1 Seh Z W, Sun Y M, Zhang Q F, et al. Designing high - energy lithium - sulfur batteries J . Chemical Society Reviews, 2016, 45(20): 5605 - 5634.

2Liu M N, Ye F M, Li W F, et al. Chemical routes toward long-lasting lithium/sulfur cellsJ. Nano Research, 2016, 9(1): 94-116.

3Zhu J D, Zhu P, Yan C Y, et al. Recent progress in polymer materials for advanced lithium-sulfur batteriesJ. Progress in Polymer Science, 2019, 90: 118-163.

4Bruce P G, Freunberger S A, Hardwick L J, et al. Li-O 2 and Li-S batteries with high energy storageJ. Nature Materials, 2012, 11(1): 19-29.

5Yao Y, Wang H, Yang H, et al. A dual-functional conductive framework embedded with TiN-VN heterostructures for highly efficient polysulfide and lithium regulation toward stable Li-S full batteriesJ. Advanced Materials, 2020, 32(6): 1905658.

6Zheng S Y, Chen Y, Xu Y H, et al. In situ formed lithium sulfide/microporous carbon cathodes for lithium-ion batteriesJ. ACS Nano, 2013, 7(12): 10995-11003.

7Hassoun J, Scrosati B. A high-performance polymer tin sulfur lithium ion batteryJ. Angewandte Chemie (International Ed in English), 2010, 49(13): 2371-2374.

8Yang Y, McDowell M T, Jackson A, et al. New nanostructured Li 2S/silicon rechargeable battery with high specific energyJ. Nano Letters, 2010, 10(4): 1486-1491.

9Yang Y, Zheng G Y, Misra S, et al. High-capacity micrometer-sized Li 2S particles as cathode materials for advanced rechargeable lithium-ion batteriesJ. Journal of the American Chemical Society, 2012, 134(37): 15387-15394.

10Tsao Y, Lee M, Miller E C, et al. Designing a quinone-based redox mediator to facilitate Li 2S oxidation in Li-S batteriesJ. Joule, 2019, 3(3): 872-884.

undefined

备注/Memo

备注/Memo:
收稿日期: 2022-03-17
网络出版日期:2022-06-02
基金项目: 国家自然科学基金项目(22075313);浙江理工大学科研启动基金(18062299-Y)
作者简介: 房彬(1996—),男,山东济宁人,硕士研究生,主要从事锂硫电池方面的研究
通信作者: 叶方敏,E-mail:fmye2018@zstu.edu.cn
更新日期/Last Update: 2023-04-03