Hollow urchin-like Al-doped α-MnO2-x as advanced sulfur host for high- performance lithium-sulfur batteries

被引：10

作者：

Zhang, Dan ^{[1
]}

Li, Zhihao ^{[1
]}

Li, Yongfang ^{[1
]}

Zeng, Peng ^{[1
]}

Shu, Hongbo ^{[1
]}

Chen, Manfang ^{[1
]}

Wang, Xianyou ^{[1
]}

机构：

[1] Xiangtan Univ, Sch Chem, Natl Base Int Sci & Technol Cooperat, Xiangtan 411105, Peoples R China

来源：

MATERIALS LETTERS | 2021年 / 285卷 / 285期

关键词：

Composite materials; Urchin-like structures; Lithium-sulfur batteries;

D O I：

10.1016/j.matlet.2020.129135

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An urchin-like hollow Al-doped alpha-MnO2-x microsphere is prepared by a facile hydrothermal method and exhibited effective regulation for the dissolution of polysulfides from the Li-S cathode. After Al doping, the conductivity of MnO2 has been greatly improved, and made the traditional MnO2 morphology changed. These Al-doped alpha-MnO2-x/S microspheres are found to exhibit high initial discharge capacity of 1017 mAh g(-1) under sulfur content up to 73 wt% at 1 C and they exhibit a favorable cycle stability of 694 mAh g(-1) at 3 C after 300 cycles. These excellent characteristics make this composite a promising cathode material for Li-S batteries. (c) 2020 Elsevier B.V. All rights reserved.

引用

页数：5

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