%0 Journal Article
%A Yang, Dawei
%A Liang, Zhifu
%A Tang, Pengyi
%A Zhang, Chaoqi
%A Tang, Mingxue
%A Li, Qizhen
%A Biendicho, Jordi Jacas
%A Li, Junshan
%A Heggen, Marc
%A Dunin-Borkowski, Rafal E.
%A Xu, Ming
%A Llorca, Jordi
%A Arbiol, Jordi
%A Morante, Joan Ramon
%A Chou, Shu-Lei
%A Cabot, Andreu
%T A High Conductivity 1D π–d Conjugated Metal–Organic Framework with Efficient Polysulfide Trapping‐Diffusion‐Catalysis in Lithium–Sulfur Batteries
%J Advanced materials
%V 34
%N 10
%@ 0935-9648
%C Weinheim
%I Wiley-VCH
%M FZJ-2022-02048
%P 2108835 -
%D 2022
%X The shuttling behavior and sluggish conversion kinetics of the intermediate lithium polysulfides (LiPS) represent the main obstructions to the practical application of lithium–sulfur batteries (LSBs). Herein, a 1D π–d conjugated metal–organic framework (MOF), Ni-MOF-1D, is presented as an efficient sulfur host to overcome these limitations. Experimental results and density functional theory calculations demonstrate that Ni-MOF-1D is characterized by a remarkable binding strength for trapping soluble LiPS species. Ni-MOF-1D also acts as an effective catalyst for S reduction during the discharge process and Li2S oxidation during the charging process. In addition, the delocalization of electrons in the π–d system of Ni-MOF-1D provides a superior electrical conductivity to improve electron transfer. Thus, cathodes based on Ni-MOF-1D enable LSBs with excellent performance, for example, impressive cycling stability with over 82% capacity retention over 1000 cycles at 3 C, superior rate performance of 575 mAh g−1 at 8 C, and a high areal capacity of 6.63 mAh cm−2 under raised sulfur loading of 6.7 mg cm−2. The strategies and advantages here demonstrated can be extended to a broader range of π–d conjugated MOFs materials, which the authors believe have a high potential as sulfur hosts in LSBs.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000747786300001
%R 10.1002/adma.202108835
%U https://juser.fz-juelich.de/record/907456