CoNiOOH nanosheets array enables highly effective value-added chemicals production via nitrite and sulfide electrolysis

Miaosen Yang; Tianran Wei; Chunhui Zeng; Jingwen Zhang; Yifan Liu; Jun Luo; Guangzhi Hu; Xijun Liu

doi:10.1016/j.cej.2024.155799

CoNiOOH nanosheets array enables highly effective value-added chemicals production via nitrite and sulfide electrolysis

Miaosen Yang, Tianran Wei, Chunhui Zeng, Jingwen Zhang, Yifan Liu, Jun Luo, Guangzhi Hu, Xijun Liu

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

18 Scopus citations

Abstract

Here, we show that the CoNiOOH nanosheets array can be applied for catalyzing nitrite reduction and sulfide oxidation reactions (NO₂RR and SOR) simultaneously, realizing NH₃ production and synchronous desulfuration. As a result, the catalyst achieves a maximal Faradic efficiency of 93 % with the corresponding yield rate of 14.6mg h⁻¹ cm⁻² for NH₃ production and high robustness over 4 consecutive cycles. Beyond that, it could trigger the SOR with a low potential of 0.65 V vs RHE to reach 100 mA cm⁻², far lower than that needed for the water oxidation (1.62 V vs RHE). More importantly, the coupling system composed of NO₂RR and SOR could realize value-added products on both sides. Theoretical and experimental analyses validate that Ni regulates the electronic structure of Co site, which optimizes the activation and adsorption of reactants and intermediates, and thus reduce the energy barriers, accounting for the performance enhancement.

Original language	English
Article number	155799
Journal	Chemical Engineering Journal
Volume	498
DOIs	https://doi.org/10.1016/j.cej.2024.155799
State	Published - Oct 15 2024
Externally published	Yes

Funding

This work was financially supported by the National Natural Science Foundation of China ( 22075211 ), Guangxi Natural Science Fund for Distinguished Young Scholars ( 2024GXNSFFA010008 ), Shenzhen Science and Technology Program (JCYJ20230807112503008), Guangdong Basic and Applied Basic Research Foundation ( 2024A1515012841 ), and Natural Science Foundation of Jilin Province of China ( 20240101098JC ).

Keywords

Bifunctional catalyst
Electrosynthesis
Nitrite reduction reaction
Sulfide oxidation reaction
Value-added chemicals

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10.1016/j.cej.2024.155799

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title = "CoNiOOH nanosheets array enables highly effective value-added chemicals production via nitrite and sulfide electrolysis",

abstract = "Here, we show that the CoNiOOH nanosheets array can be applied for catalyzing nitrite reduction and sulfide oxidation reactions (NO2RR and SOR) simultaneously, realizing NH3 production and synchronous desulfuration. As a result, the catalyst achieves a maximal Faradic efficiency of 93 % with the corresponding yield rate of 14.6mg h−1 cm−2 for NH3 production and high robustness over 4 consecutive cycles. Beyond that, it could trigger the SOR with a low potential of 0.65 V vs RHE to reach 100 mA cm−2, far lower than that needed for the water oxidation (1.62 V vs RHE). More importantly, the coupling system composed of NO2RR and SOR could realize value-added products on both sides. Theoretical and experimental analyses validate that Ni regulates the electronic structure of Co site, which optimizes the activation and adsorption of reactants and intermediates, and thus reduce the energy barriers, accounting for the performance enhancement.",

keywords = "Bifunctional catalyst, Electrosynthesis, Nitrite reduction reaction, Sulfide oxidation reaction, Value-added chemicals",

author = "Miaosen Yang and Tianran Wei and Chunhui Zeng and Jingwen Zhang and Yifan Liu and Jun Luo and Guangzhi Hu and Xijun Liu",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

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day = "15",

doi = "10.1016/j.cej.2024.155799",

language = "English",

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T1 - CoNiOOH nanosheets array enables highly effective value-added chemicals production via nitrite and sulfide electrolysis

AU - Yang, Miaosen

AU - Wei, Tianran

AU - Zeng, Chunhui

AU - Zhang, Jingwen

AU - Liu, Yifan

AU - Luo, Jun

AU - Hu, Guangzhi

AU - Liu, Xijun

PY - 2024/10/15

Y1 - 2024/10/15

N2 - Here, we show that the CoNiOOH nanosheets array can be applied for catalyzing nitrite reduction and sulfide oxidation reactions (NO2RR and SOR) simultaneously, realizing NH3 production and synchronous desulfuration. As a result, the catalyst achieves a maximal Faradic efficiency of 93 % with the corresponding yield rate of 14.6mg h−1 cm−2 for NH3 production and high robustness over 4 consecutive cycles. Beyond that, it could trigger the SOR with a low potential of 0.65 V vs RHE to reach 100 mA cm−2, far lower than that needed for the water oxidation (1.62 V vs RHE). More importantly, the coupling system composed of NO2RR and SOR could realize value-added products on both sides. Theoretical and experimental analyses validate that Ni regulates the electronic structure of Co site, which optimizes the activation and adsorption of reactants and intermediates, and thus reduce the energy barriers, accounting for the performance enhancement.

AB - Here, we show that the CoNiOOH nanosheets array can be applied for catalyzing nitrite reduction and sulfide oxidation reactions (NO2RR and SOR) simultaneously, realizing NH3 production and synchronous desulfuration. As a result, the catalyst achieves a maximal Faradic efficiency of 93 % with the corresponding yield rate of 14.6mg h−1 cm−2 for NH3 production and high robustness over 4 consecutive cycles. Beyond that, it could trigger the SOR with a low potential of 0.65 V vs RHE to reach 100 mA cm−2, far lower than that needed for the water oxidation (1.62 V vs RHE). More importantly, the coupling system composed of NO2RR and SOR could realize value-added products on both sides. Theoretical and experimental analyses validate that Ni regulates the electronic structure of Co site, which optimizes the activation and adsorption of reactants and intermediates, and thus reduce the energy barriers, accounting for the performance enhancement.

KW - Bifunctional catalyst

KW - Electrosynthesis

KW - Nitrite reduction reaction

KW - Sulfide oxidation reaction

KW - Value-added chemicals

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DO - 10.1016/j.cej.2024.155799

M3 - Article

AN - SCOPUS:85203825419

SN - 1385-8947

VL - 498

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 155799

ER -

CoNiOOH nanosheets array enables highly effective value-added chemicals production via nitrite and sulfide electrolysis

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