Interfacial charge-transfer enhances the dual-function of the porous NiCo2S4@SiO2 heterojunction for high-performance Li–S batteries

Shuangqing Fan; Hao-Qiang Cao; Jianjun Song; Minghui Cao; Jie Su

doi:10.1039/D1CC05707C

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Interfacial charge-transfer enhances the dual-function of the porous NiCo₂S₄@SiO₂ heterojunction for high-performance Li–S batteries†

Shuangqing Fan,

‡*^a Hao-Qiang Cao,‡^b Jianjun Song,

^c Minghui Cao^a and Jie Su

*^a

Author affiliations

* Corresponding authors

^a School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China
E-mail: jsu@qdu.edu.cn, sqfan@qdu.edu.cn

^b Chinese Automotive Technology & Research Centre Co. Ltd, Tianjin 301822, China

^c College of Physics, Qingdao University, Qingdao 266071, China

Abstract

Porous NiCo₂S₄@SiO₂ is employed as the sulfur host. The negatively charged SiO₂ can increase the charge density and conductivity of NiCo₂S₄ and accelerate the conversion of sulfur. The charge transfer effect would in turn reduce the electrostatic repulsion between SiO₂ and negatively charged polysulfide, thereby enhancing the adsorption of polysulfides.

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Article information

DOI: https://doi.org/10.1039/D1CC05707C
Article type: Communication
Submitted: 09 Oct 2021
Accepted: 14 Dec 2021
First published: 18 Dec 2021

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Chem. Commun., 2022,58, 1155-1158

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Interfacial charge-transfer enhances the dual-function of the porous NiCo₂S₄@SiO₂ heterojunction for high-performance Li–S batteries

S. Fan, H. Cao, J. Song, M. Cao and J. Su, Chem. Commun., 2022, 58, 1155 DOI: 10.1039/D1CC05707C

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