DataVXACS Applied Energy MaterialsPaper
journal article·2020-12-28

Ultrathin MnO2 Sheet Arrays Grown on Hollow Carbon Fibers as Effective Polysulfide-Blocking Interlayers for High-Performance Li–S Batteries

Guojie Chao, Longsheng Zhang, Shijia Yuan, Tiantian Xue, Fan Yang, Yunpeng Huang, Wei Fan, Tianxi Liu

ACS Applied Energy Materials· Volume 3· Issue 12
Publisher page
Source abstract

Abstract

Lithium–sulfur (Li–S) batteries are clean energy conversion devices with high theoretical energy densities and specific capacities. However, Li–S batteries exhibit poor cycling stability during the practical test, mainly because of the detrimental shuttle effect of intermediate lithium polysulfides (LiPSs). Here, we report a common and scalable strategy to prepare freestanding membranes of MnO2 sheet arrays anchored on natural cotton-derived hollow carbon fibers (MnO2/HCFs), which as interlayers can mitigate shuttling of LiPSs and thus boost the durabilities of Li–S batteries. By combining ultraviolet–visible absorption and X-ray photoelectron spectroscopy, we find that a MnO2/HCF interlayer can trap the LiPSs through chemical interactions between LiPSs and MnO2. With a MnO2/HCF interlayer, the Li–S battery shows a satisfactory capacity of 970 mA h g–1 at 1 A g–1 with a capacity decay of merely 0.12% per cycle over 500 cycles.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, P. R. China

Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China

Funding

Ministry of Education of the People's Republic of China · Shanghai Municipal Education Commission · National Natural Science Foundation of China · Program of Shanghai Academic Research Leader · Shanghai Scientific and Technological Innovation Project · Shanghai Sailing Program

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