journal article·2021-09-10

A Highly Conductive COF@CNT Electrocatalyst Boosting Polysulfide Conversion for Li–S Chemistry

Jie Xu, Weiqiang Tang, Chao Yang, Ingo Manke, Nan Chen, Feili Lai, Ting Xu, Shuhao An, Honglai Liu, Zhiliang Zhang, Yongjie Cao, Nan Wang, Shuangliang Zhao, Dongfang Niu, Renjie Chen

ACS Energy Letters· Volume 6· Issue 9
Publisher page

Abstract

The catalysis of covalent organic frameworks COFs in Li S chemistry is largely blocked by a weak chemical interaction and low conductivity. Herein, a new kind of diketopyrrolopyrrole DPP based COF is in situ fabricated onto the carbon nanotube CNT surface denoted as COF CNT to uncover the electrocatalysis behavior by its strong chemical interaction and highly conductive property. We declare that the electrocatalytic activity of DPP COF can be maximized by introducing an appropriate content of CNT 66 wt ; the analyses including density functional theory calculations, X ray photoelectron spectroscopy, Fourier transform infrared, and Raman show that the DPP moiety can mediate the conversion of polysulfides contributed by a C amp; 9552;O C O bonding conversion. Hence, the modified battery shows a 0.042 decay rate over 1000 cycles and achieves a desirable capacity of 8.7 mAh cm 2 with 10 mg cm 2 sulfur loading and lean electrolyte E S 5 . This work will inspire the rational design of COF support hybrids for various electrocatalysis applications
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Research context

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Covalent Organic Framework Applications

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

Affiliations

Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China

Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200433, China

State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, Berlin 14109, Germany

Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing, China

Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven 3001, Belgium

Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China

Funding

China Postdoctoral Science Foundation · National Natural Science Foundation of China

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