Competing polysulfides conversion between edge-N and embedded CoS2 within multichannel carbon nanofibers

Keke Li,Yajie Sun,Kaixiang Shi,Kaiyang Xu,Junhao Li,Chao Qiu,Huafeng Dong,Quanbing Liu,Zhenxing Liang

CHEMICAL ENGINEERING SCIENCE（2023）

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摘要

•The multichannel carbon fibers (CoS2/NMCNF) were decorated with edge nitrogen and CoS2 nanoparticles.•The internal channels provide spatial constraints towards alleviating volume expansion and accelerating electron/ion transmission.•A competing catalytic behavior dominated by two functional components accelerate the liquid–liquid–solid conversion of LiPSs.•The CoS2/NMCNF/S exhibits excellent cycling stability even at 4.10 mg cm−2.

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关键词

Li-S batteries,Multichannel carbon nanofibers,Edge-N and CoS2,Competing catalytic mechanism

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