Heteroatom-Induced Accelerated Kinetics on Nickel Selenide for Highly Efficient Hydrazine-Assisted Water Splitting and Zn-Hydrazine Battery

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano-Micro Letters Pub Date : 2023-06-19 DOI:10.1007/s40820-023-01128-z

Hao-Yu Wang, Lei Wang, Jin-Tao Ren, Wen-Wen Tian, Ming-Lei Sun, Zhong-Yong Yuan

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引用次数: 7

Abstract

Hydrazine-assisted water electrolysis is a promising energy conversion technology for highly efficient hydrogen production. Rational design of bifunctional electrocatalysts, which can simultaneously accelerate hydrogen evolution reaction (HER)/hydrazine oxidation reaction (HzOR) kinetics, is the key step. Herein, we demonstrate the development of ultrathin P/Fe co-doped NiSe₂ nanosheets supported on modified Ni foam (P/Fe-NiSe₂) synthesized through a facile electrodeposition process and subsequent heat treatment. Based on electrochemical measurements, characterizations, and density functional theory calculations, a favorable “2 + 2” reaction mechanism with a two-step HER process and a two-step HzOR step was fully proved and the specific effect of P doping on HzOR kinetics was investigated. P/Fe-NiSe₂ thus yields an impressive electrocatalytic performance, delivering a high current density of 100 mA cm⁻² with potentials of − 168 and 200 mV for HER and HzOR, respectively. Additionally, P/Fe-NiSe₂ can work efficiently for hydrazine-assisted water electrolysis and Zn-Hydrazine (Zn-Hz) battery, making it promising for practical application.

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杂原子诱导的硒化镍高效肼助水分解和锌-肼电池加速动力学

肼辅助水电解是一种很有前途的高效制氢能量转换技术。合理设计能同时加速析氢反应(HER)/肼氧化反应(HzOR)动力学的双功能电催化剂是关键步骤。在此，我们展示了超薄P/Fe共掺杂NiSe2纳米片的发展，支持改性Ni泡沫(P/Fe-NiSe2)通过简单的电沉积工艺和随后的热处理合成。基于电化学测量、表征和密度泛函理论计算，充分证明了两步HER和两步HzOR反应的良好“2 + 2”反应机理，并研究了P掺杂对HzOR动力学的具体影响。P/ fe - nis2因此产生了令人印象深刻的电催化性能，为HER和HzOR提供了100 mA cm - 2的高电流密度，分别为- 168和200 mV。此外，P/ fe - nis2可以有效地用于肼辅助电解和锌-肼(Zn-Hz)电池，具有实际应用前景。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

42.40

自引率

4.90%

发文量

715

审稿时长

13 weeks

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary and open-access journal that focus on science, experiments, engineering, technologies and applications of nano- or microscale structure and system in physics, chemistry, biology, material science, pharmacy and their expanding interfaces with at least one dimension ranging from a few sub-nanometers to a few hundreds of micrometers. Especially, emphasize the bottom-up approach in the length scale from nano to micro since the key for nanotechnology to reach industrial applications is to assemble, to modify, and to control nanostructure in micro scale. The aim is to provide a publishing platform crossing the boundaries, from nano to micro, and from science to technologies.