Inhibiting shuttle effect of lithium sulfur batteries by introducing hydroxylated multi-walled carbon nanotube

被引：0

作者：

Huang Y. ^{[1
]}

Sun X. ^{[1
]}

Wang J. ^{[1
]}

Li X. ^{[1
]}

Chen W. ^{[1
]}

Wei C. ^{[1
]}

Hu H. ^{[1
]}

Liang G. ^{[1
]}

机构：

[1] School of Mechatronics Engineering, Nanchang University, Nanchang

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2019年 / 36卷 / 05期

关键词：

Hydroxyl; Lithium-sulfur batteries; Multi-walled carbon nanotubes; Polysulfide; Shuttle effect;

D O I：

10.13801/j.cnki.fhclxb.20180827.002

中图分类号：

学科分类号：

摘要：

The present work aimed to restrain shuttle effect of lithium-sulfur (Li-S) batteries and improve the cycle performance. Hydroxylated multi-walled carbon nanotube (MWCNTs-OH) was used in the positive electrode to absorb polysulfides for cheking the shuttle effect. The diffusion of polysulphides was prevented from absorbing of hydroxyl groups to them. The utilization of active materials was enhanced.The capacity and cycle performance of lithium-sulfur batteries were greatly improved. The morphology and structure of electrodes were observed by TEM, SEM and EDS. The electrochemical test results show that the initial discharge specific capacity of Li-S batteries with the MWCNTs-OH reaches to 1 281 mAh/g and the coulomb efficiency reaches around 96.7%. The discharge capacity remains 882 mAh/g after 10 cycles. The batteries maintained a discharge specific capacity of 794.2 mAh/g, 712.2 mAh/g and 557.3 mAh/g at the current rate of 0.2 C, 0.5 C and 1 C respectively, showing excellent magnification. © 2019, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：1335 / 1341

页数：6

共 20 条

[1] Marmorstein D., Yu T.H., Striebel K.A., Electrochemical performance of lithium/sulfur cells with three different polymer electrolytes, Journal of Power Sources, 89, 2, pp. 219-226, (2000)
[2] Patil A., Patil V., Dong W.S., Et al., Issue and challenges facing rechargeable thin film lithium batteries, Materials Research Bulletin, 43, 8, pp. 1913-1942, (2008)
[3] Bruce P.G., Freunberger S.A., Hardwich L.J., Et al., Li-O<sub>2</sub> and Li-S batteries with high energy storage, Nature Materials, 11, 1, pp. 19-29, (2011)
[4] Hu Z.Q., Xie K., Research progress of sulfur electrode of lithium/sulfur batteries, Materials Review, 25, 9, pp. 46-50, (2011)
[5] Diao Y., Xie K., Xiong S., Et al., Shuttle phenomenon: The irreversible oxidation mechanism of sulfur active material in Li-S battery, Journal of Power Sources, 235, pp. 181-186, (2013)
[6] Li W.F., Liu M.N., Wang J., Et al., Progress of lithium/sulfur batteries based on chemically modified carbon, Acta Physico-Chimica Sinica, 33, 1, pp. 165-182, (2017)
[7] Yang Y., Zheng G., Cui Y., Nanostructured sulfur cathodes, Chemical Society Reviews, 42, 7, pp. 3018-3032, (2013)
[8] Ummethala R., Fritzsche M., Jaumann T., Et al., Lightweight, free-standing 3D interconnected carbon nanotube foam as a flexible sulfur host for high performance lithium-sulfur battery cathodes, Energy Storage Materials, 10, pp. 206-215, (2018)
[9] Cheng X.B., Huang J.Q., Zhang Q., Et al., Aligned carbon nanotube/sulfur composite cathodes with high sulfur content for lithium-sulfur batteries, Nano Energy, 4, pp. 65-72, (2014)
[10] Li L., Ruan G., Peng Z., Et al., Enhanced cycling stability of lithium sulfur batteries using sulfur-polyaniline-graphene nanoribbon composite cathodes, ACS Applied Materials & Interfaces, 6, 17, pp. 15033-15039, (2014)

← 1 2 →