Notes in accordions-organized MXene equipped with CeO2 for synergistically adsorbing and catalyzing polysulfides for high-performance lithium-sulfur batteries

被引：76

作者：

Chen, Xiaochuan ^{[1
]}

Li, Libo ^{[1
]}

Shan, Yuhang ^{[1
]}

Zhou, Da ^{[1
]}

Cui, Wenjun ^{[1
]}

Zhao, Yangmingyue ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Mat Sci & Chem Engn, Harbin 150040, Heilongjiang, Peoples R China

来源：

JOURNAL OF ENERGY CHEMISTRY | 2022年 / 70卷

基金：

中国国家自然科学基金;

关键词：

Cooperative effects; MXene; CeO2; Kinetics; Lithium-sulfur batteries; HYDROXIDE; CATHODE; ANODE; OXIDE;

D O I：

10.1016/j.jechem.2022.02.046

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Limited by the shuttle effect, the application of lithium-sulfur batteries is not impressive. As an organ layered two-dimensional (2D) material, MXene has a great electrical conductivity and high specific surface area. Meanwhile, the introduction of metal oxides can restrain the shuttle effect. Hence, this paper prepared CeO2/MXene as a cathode material of Li-S batteries. Ce and Ti can chemically adsorb S, and the interlayer structure of MXene can limit S while the interlayer space can alleviate volume expansion. The discharge capacity at 0.5 C is as high as 1051.1 mAh g(-1), and 921.9 mAh g(-1) after 200 cycles. The average coulombic efficiency is 97.75%. The organized MXene with CeO2 like notes in accordions are new efficient materials for lithium-sulfur batteries. (c) 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

引用

页码：502 / 510

页数：9

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