NDLI: Three-dimensionally ordered macro/mesoporous $TiO_{2}$ matrix to immobilize sulfur for high performance lithium/sulfur batteries

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Three-dimensionally ordered macro/mesoporous $TiO_{2}$ matrix to immobilize sulfur for high performance lithium/sulfur batteries

Content Provider	Scilit
Author	Liang, Chunyong Zhang, Xiaomin Zhao, Yan Tan, Taizhe Zhang, Yongguang Bakenov, Zhumabay
Copyright Year	2018
Description	Journal: Nanotechnology A three-dimensionally (3D) ordered macro-/mesoporous TiO2 (3DOM-mTiO2) was synthesized via a simple solvothermal process. 3DOM-mTiO2 was used as a sulfur carrier for cathode materials in lithium-sulfur (Li-S) battery. The orderly interconnected macro and mesopores structure within the macropore walls yield a large pore volume and high specific surface area in 3DOM-mTiO2, which improved the sulfur loading capacity of the material. The S/TiO2 composite was synthesized as a cathode material for lithium/sulfur battery, which initially produced a high capacity of 1089 mAh g-1 and retained a value of 703 mAh g-1 after 200 cycles. Initial current rate of 0.2 C was used, which was further increased up to 2.5 C when a reversible capacity of 651 mAh g-1 was obtained. The excellent electrochemical performance can be attributed to 3D ordered macro-/mesoporous structure of TiO2, which physically confine the soluble lithium polysulfides and diminishes the sulfur volume expansion upon cycling. In addition, the strong electrostatic attraction between Ti-O bond and polysulfide stimulates the performance via stronger adsorption of the electrochemical reaction products.
Related Links	http://iopscience.iop.org/article/10.1088/1361-6528/aad543/pdf
ISSN	09574484
e-ISSN	13616528
DOI	10.1088/1361-6528/aad543
Journal	Nanotechnology
Issue Number	41
Volume Number	29
Language	English
Publisher	IOP Publishing
Publisher Date	2018-07-23
Access Restriction	Open
Subject Keyword	Journal: Nanotechnology Chemical Engineering Electrochemical Performance
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Mechanics of Materials Mechanical Engineering Bioengineering Electrical and Electronic Engineering

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