TY  - JOUR
AU  - Yang, Dawei
AU  - Liang, Zhifu
AU  - Tang, Pengyi
AU  - Zhang, Chaoqi
AU  - Tang, Mingxue
AU  - Li, Qizhen
AU  - Biendicho, Jordi Jacas
AU  - Li, Junshan
AU  - Heggen, Marc
AU  - Dunin-Borkowski, Rafal E.
AU  - Xu, Ming
AU  - Llorca, Jordi
AU  - Arbiol, Jordi
AU  - Morante, Joan Ramon
AU  - Chou, Shu-Lei
AU  - Cabot, Andreu
TI  - A High Conductivity 1D π–d Conjugated Metal–Organic Framework with Efficient Polysulfide Trapping‐Diffusion‐Catalysis in Lithium–Sulfur Batteries
JO  - Advanced materials
VL  - 34
IS  - 10
SN  - 0935-9648
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2022-02048
SP  - 2108835 -
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000747786300001
DO  - DOI:10.1002/adma.202108835
UR  - https://juser.fz-juelich.de/record/907456
ER  -