Multimetal Borides Nanochains as Efficient Electrocatalysts for Overall Water Splitting

Yingjie Li; Bolong Huang; Yingjun Sun; Mingchuan Luo; Yong Yang; Yingnan Qin; Lei Wang; Chunji Li; Fan Lv; Weiyu Zhang; Shaojun Guo

doi:10.1002/smll.201804212

Multimetal Borides Nanochains as Efficient Electrocatalysts for Overall Water Splitting

Yingjie Li, Bolong Huang, Yingjun Sun, Mingchuan Luo, Yong Yang, Yingnan Qin, Lei Wang, Chunji Li, Fan Lv, Weiyu Zhang, Shaojun Guo^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

208 Citations (Scopus)

Abstract

The development of cost-efficient, active, and stable electrode materials as bifunctional catalysts for electrochemical water splitting is crucial to high-performance renewable energy storage and conversion devices. In this work, the synthesis of Co-based multi-metal borides nanochains with amorphous structure is reported for boosting the oxygen evolution (OER) and hydrogen evolution reactions (HER) by one-pot NaBH4 reduction of Co2+, Ni2+, and Fe2+ under ambient temperature. In all the investigated Co-based metal borides, NiCoFeB nanochains show the excellent OER performance with a low overpotential of 284 mV at 10 mA cm-2 and Tafel slope of 46 mV dec-1, respectively, together with excellent catalytic stability, and robust HER performance with an overpotential of 345 mV at 10 mA cm-2. The density functional theory (DFT) calculations reveal that the excellent electrocatalytic performance is mainly attributed to optimal electronic structure by tuning the Co-3d band activities by the incorporation of Ni and Fe for enhanced water splitting via the potentially existed Co0 state. Moreover, the electrolyzer using NiCoFeB nanochains as anode and cathode offers 10 mA cm-2 at a cell voltage of 1.81 V, comparable to commercial Pt/C // Ir/C, providing a simple method to design and explore highly efficient and cheap bifunctional electrocatalysts for overall water splitting. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Original language	English
Article number	1804212
Journal	Small
Volume	15
Issue number	1
DOIs	https://doi.org/10.1002/smll.201804212
Publication status	Published - 4 Jan 2019
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 13 Climate Action

Research Keywords

Co-based multimetal borides
nanochains
overall water splitting
regulable electronic structure

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@article{56c4e0b24d984bbca8a2b54dbb9db31b,

title = "Multimetal Borides Nanochains as Efficient Electrocatalysts for Overall Water Splitting",

abstract = "The development of cost-efficient, active, and stable electrode materials as bifunctional catalysts for electrochemical water splitting is crucial to high-performance renewable energy storage and conversion devices. In this work, the synthesis of Co-based multi-metal borides nanochains with amorphous structure is reported for boosting the oxygen evolution (OER) and hydrogen evolution reactions (HER) by one-pot NaBH4 reduction of Co2+, Ni2+, and Fe2+ under ambient temperature. In all the investigated Co-based metal borides, NiCoFeB nanochains show the excellent OER performance with a low overpotential of 284 mV at 10 mA cm-2 and Tafel slope of 46 mV dec-1, respectively, together with excellent catalytic stability, and robust HER performance with an overpotential of 345 mV at 10 mA cm-2. The density functional theory (DFT) calculations reveal that the excellent electrocatalytic performance is mainly attributed to optimal electronic structure by tuning the Co-3d band activities by the incorporation of Ni and Fe for enhanced water splitting via the potentially existed Co0 state. Moreover, the electrolyzer using NiCoFeB nanochains as anode and cathode offers 10 mA cm-2 at a cell voltage of 1.81 V, comparable to commercial Pt/C // Ir/C, providing a simple method to design and explore highly efficient and cheap bifunctional electrocatalysts for overall water splitting. {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

keywords = "Co-based multimetal borides, nanochains, overall water splitting, regulable electronic structure",

author = "Yingjie Li and Bolong Huang and Yingjun Sun and Mingchuan Luo and Yong Yang and Yingnan Qin and Lei Wang and Chunji Li and Fan Lv and Weiyu Zhang and Shaojun Guo",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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TY - JOUR

T1 - Multimetal Borides Nanochains as Efficient Electrocatalysts for Overall Water Splitting

AU - Li, Yingjie

AU - Huang, Bolong

AU - Sun, Yingjun

AU - Luo, Mingchuan

AU - Yang, Yong

AU - Qin, Yingnan

AU - Wang, Lei

AU - Li, Chunji

AU - Lv, Fan

AU - Zhang, Weiyu

AU - Guo, Shaojun

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2019/1/4

Y1 - 2019/1/4

N2 - The development of cost-efficient, active, and stable electrode materials as bifunctional catalysts for electrochemical water splitting is crucial to high-performance renewable energy storage and conversion devices. In this work, the synthesis of Co-based multi-metal borides nanochains with amorphous structure is reported for boosting the oxygen evolution (OER) and hydrogen evolution reactions (HER) by one-pot NaBH4 reduction of Co2+, Ni2+, and Fe2+ under ambient temperature. In all the investigated Co-based metal borides, NiCoFeB nanochains show the excellent OER performance with a low overpotential of 284 mV at 10 mA cm-2 and Tafel slope of 46 mV dec-1, respectively, together with excellent catalytic stability, and robust HER performance with an overpotential of 345 mV at 10 mA cm-2. The density functional theory (DFT) calculations reveal that the excellent electrocatalytic performance is mainly attributed to optimal electronic structure by tuning the Co-3d band activities by the incorporation of Ni and Fe for enhanced water splitting via the potentially existed Co0 state. Moreover, the electrolyzer using NiCoFeB nanochains as anode and cathode offers 10 mA cm-2 at a cell voltage of 1.81 V, comparable to commercial Pt/C // Ir/C, providing a simple method to design and explore highly efficient and cheap bifunctional electrocatalysts for overall water splitting. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - The development of cost-efficient, active, and stable electrode materials as bifunctional catalysts for electrochemical water splitting is crucial to high-performance renewable energy storage and conversion devices. In this work, the synthesis of Co-based multi-metal borides nanochains with amorphous structure is reported for boosting the oxygen evolution (OER) and hydrogen evolution reactions (HER) by one-pot NaBH4 reduction of Co2+, Ni2+, and Fe2+ under ambient temperature. In all the investigated Co-based metal borides, NiCoFeB nanochains show the excellent OER performance with a low overpotential of 284 mV at 10 mA cm-2 and Tafel slope of 46 mV dec-1, respectively, together with excellent catalytic stability, and robust HER performance with an overpotential of 345 mV at 10 mA cm-2. The density functional theory (DFT) calculations reveal that the excellent electrocatalytic performance is mainly attributed to optimal electronic structure by tuning the Co-3d band activities by the incorporation of Ni and Fe for enhanced water splitting via the potentially existed Co0 state. Moreover, the electrolyzer using NiCoFeB nanochains as anode and cathode offers 10 mA cm-2 at a cell voltage of 1.81 V, comparable to commercial Pt/C // Ir/C, providing a simple method to design and explore highly efficient and cheap bifunctional electrocatalysts for overall water splitting. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

KW - Co-based multimetal borides

KW - nanochains

KW - overall water splitting

KW - regulable electronic structure

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U2 - 10.1002/smll.201804212

DO - 10.1002/smll.201804212

M3 - RGC 21 - Publication in refereed journal

C2 - 30515971

SN - 1613-6810

VL - 15

JO - Small

JF - Small

IS - 1

M1 - 1804212

ER -

Multimetal Borides Nanochains as Efficient Electrocatalysts for Overall Water Splitting

Abstract

Bibliographical note

UN SDGs

Research Keywords

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