Electrostatic spun hierarchically porous carbon matrix with CoSe2/Co heterostructure as bifunctional electrocatalysts for zinc-air batteries

Junfeng Huang; Qi Luo; Jizhao Zou; Xierong Zeng; Bingbing Chen; Hongliang Wu; Qijian Tang

doi:10.1016/j.jallcom.2021.160056

Electrostatic spun hierarchically porous carbon matrix with CoSe₂/Co heterostructure as bifunctional electrocatalysts for zinc-air batteries

Junfeng Huang, Qi Luo, Jizhao Zou, Xierong Zeng, Bingbing Chen, Hongliang Wu, Qijian Tang

School of energy science and engineering

Shenzhen University

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

N-doped carbon matrix with CoSe₂/Co heterostructures was fabricated via a four-step method by using electrostatic spinning technology for bifunctional electrocatalysts with affluent active sites, hierarchical porosity and outstanding electrocatalytic performance. The optimized CoSe₂/Co@NCNF-3 exhibited excellent bifunctional electrocatalytic performance with a Tafel slope of 76 mV/dec for ORR and a potential of 1.64 V vs. RHE at 10 mA/cm² for OER. Furthermore, it also showed superior long-term stability and anti-methanol ability compared to those of commercial Pt/C and IrO₂ catalysts. Application of CoSe₂/Co@NCNF-3 in zinc-air battery was assembled with distinguished long-term cycling stability and high maximum power density (79 mW/cm²). Density functional theory calculation demonstrated that CoSe₂/Co heterostructure boosted intermediate adsorption ability and also improved catalytic capacity for OER.

Original language	English
Article number	160056
Journal	Journal of Alloys and Compounds
Volume	875
DOIs	https://doi.org/10.1016/j.jallcom.2021.160056
State	Published - 15 Sep 2021

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title = "Electrostatic spun hierarchically porous carbon matrix with CoSe2/Co heterostructure as bifunctional electrocatalysts for zinc-air batteries",

abstract = "N-doped carbon matrix with CoSe2/Co heterostructures was fabricated via a four-step method by using electrostatic spinning technology for bifunctional electrocatalysts with affluent active sites, hierarchical porosity and outstanding electrocatalytic performance. The optimized CoSe2/Co@NCNF-3 exhibited excellent bifunctional electrocatalytic performance with a Tafel slope of 76 mV/dec for ORR and a potential of 1.64 V vs. RHE at 10 mA/cm2 for OER. Furthermore, it also showed superior long-term stability and anti-methanol ability compared to those of commercial Pt/C and IrO2 catalysts. Application of CoSe2/Co@NCNF-3 in zinc-air battery was assembled with distinguished long-term cycling stability and high maximum power density (79 mW/cm2). Density functional theory calculation demonstrated that CoSe2/Co heterostructure boosted intermediate adsorption ability and also improved catalytic capacity for OER.",

author = "Junfeng Huang and Qi Luo and Jizhao Zou and Xierong Zeng and Bingbing Chen and Hongliang Wu and Qijian Tang",

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year = "2021",

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doi = "10.1016/j.jallcom.2021.160056",

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TY - JOUR

T1 - Electrostatic spun hierarchically porous carbon matrix with CoSe2/Co heterostructure as bifunctional electrocatalysts for zinc-air batteries

AU - Huang, Junfeng

AU - Luo, Qi

AU - Zou, Jizhao

AU - Zeng, Xierong

AU - Chen, Bingbing

AU - Wu, Hongliang

AU - Tang, Qijian

PY - 2021/9/15

Y1 - 2021/9/15

N2 - N-doped carbon matrix with CoSe2/Co heterostructures was fabricated via a four-step method by using electrostatic spinning technology for bifunctional electrocatalysts with affluent active sites, hierarchical porosity and outstanding electrocatalytic performance. The optimized CoSe2/Co@NCNF-3 exhibited excellent bifunctional electrocatalytic performance with a Tafel slope of 76 mV/dec for ORR and a potential of 1.64 V vs. RHE at 10 mA/cm2 for OER. Furthermore, it also showed superior long-term stability and anti-methanol ability compared to those of commercial Pt/C and IrO2 catalysts. Application of CoSe2/Co@NCNF-3 in zinc-air battery was assembled with distinguished long-term cycling stability and high maximum power density (79 mW/cm2). Density functional theory calculation demonstrated that CoSe2/Co heterostructure boosted intermediate adsorption ability and also improved catalytic capacity for OER.

AB - N-doped carbon matrix with CoSe2/Co heterostructures was fabricated via a four-step method by using electrostatic spinning technology for bifunctional electrocatalysts with affluent active sites, hierarchical porosity and outstanding electrocatalytic performance. The optimized CoSe2/Co@NCNF-3 exhibited excellent bifunctional electrocatalytic performance with a Tafel slope of 76 mV/dec for ORR and a potential of 1.64 V vs. RHE at 10 mA/cm2 for OER. Furthermore, it also showed superior long-term stability and anti-methanol ability compared to those of commercial Pt/C and IrO2 catalysts. Application of CoSe2/Co@NCNF-3 in zinc-air battery was assembled with distinguished long-term cycling stability and high maximum power density (79 mW/cm2). Density functional theory calculation demonstrated that CoSe2/Co heterostructure boosted intermediate adsorption ability and also improved catalytic capacity for OER.

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U2 - 10.1016/j.jallcom.2021.160056

DO - 10.1016/j.jallcom.2021.160056

M3 - 文章

AN - SCOPUS:85104913710

SN - 0925-8388

VL - 875

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 160056

ER -

Electrostatic spun hierarchically porous carbon matrix with CoSe₂/Co heterostructure as bifunctional electrocatalysts for zinc-air batteries

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