Enhancing the d/p-Band Center Proximity with Amorphous-Crystalline Interface Coupling for Boosted Ph-Robust Water Electrolysis

Yaoda Liu; Thangavel Sakthivel; Feng HuYahui TianDongshuang WuEdison Huixiang AngHang LiuShengwu GuoShengjie PengZhengfei Dai

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Enhancing the d/p-Band Center Proximity with Amorphous-Crystalline Interface Coupling for Boosted Ph-Robust Water Electrolysis

机译：Enhancing the d/p-Band Center Proximity with Amorphous-Crystalline Interface Coupling for Boosted Ph-Robust Water Electrolysis

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Rationalizing non-precious pH-robust electrocatalysts is a crucial priority andrequired for multi-scenario hydrogen production customization. Herein, anamorphous–crystalline CoBO_x/NiSe heterostructure is theoretically profiledand constructed for efficient and pH-robust water electrolysis. The crystallinelattice confinement induces a Co-Co bond shortening and a B-site delocalizationon amorphous CoBO_x, resulting in a decreased d-p band centerdifference (Δε_(d-p)) toward the balanced intermediates adsorption/desorption.Accordingly, the CoBO_x/NiSe heterostructure exhibits efficient and robusthydrogen/oxygen evolution reaction (HER/OER) catalytic activity in differentelectrolytes. Of particular note, it achieves ultralow overpotentials in boththe beyond-Pt HER (14.5 mV) and OER (229.1 mV) at 10 mA cm~(?2) under analkaline electrolyte, and reaches an industrial-level OER current density of2 A cm~(?2). Water electrolysis is stably delivered with a low η_(10) voltage of 1.48 V.The incorporation of such d-p orbitals at the amorphous–crystalline interfaceputs forward new opportunities in rationally designing advanced non-preciouselectrocatalysts for water electrolysis.

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来源
《Advanced energy materials》 |2023年第11期|2203797.1-2203797.12|共12页
作者
Yaoda Liu; Thangavel Sakthivel; Feng HuYahui TianDongshuang WuEdison Huixiang AngHang LiuShengwu GuoShengjie PengZhengfei Dai;
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State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049, P. R. China;

Jiangsu Key Laboratory of Electrochemical Energy Storage TechnologiesCollege of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016, P. R. China;

Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601, P. R. ChinaSchool of Materials Science and EngineeringNatural Sciences and Science Education inNational Institute of EducationNanyang Technological UniversitySingapore 637616, Singapore;

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amorphous materials; cobalt borates; d/p-band center; electrocatalysts; water electrolysis;

Enhancing the d/p-Band Center Proximity with Amorphous-Crystalline Interface Coupling for Boosted Ph-Robust Water Electrolysis

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