Hydrothermally synthesized NiSe2 nanospheres for efficient bifunctional electrocatalysis in alkaline seawater electrolysis: High performance and stability in HER and OER

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-04-07 DOI:10.1016/j.materresbull.2025.113463

Shuang-shuang Zhang , Rui-Yu Li , Xin Li , Yong-qi Tian , Rong-da Zhao , Jun Xiang , Fu-fa Wu , De-peng Zhao

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Abstract

Finding active and stable electrocatalysts composed of inexpensive elements, with simple synthesis methods, high catalytic performance, and excellent cycling stability is crucial for hydrogen production through water electrolysis. In this study, NiSe₂ nanospheres were grown on nickel-cobalt precursor foam nickel using a hydrothermal method. At a current density of 10 mA cm^-2, the overpotential for the hydrogen evolution reaction (HER) was 149.7 mV, while the overpotential for the oxygen evolution reaction (OER) was 198 mV. The electrocatalyst maintained its morphology almost intact even after 12 h of stability testing, and its performance remained stable after cyclic testing. Furthermore, in an alkaline seawater electrolysis environment at a current density of 10 mA cm^-2, the overpotential for HER was 154.5 mV, and the overpotential for OER was 182.5 mV.

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水热合成用于碱性海水电解高效双功能电催化的nis2纳米球：在HER和OER中的高性能和稳定性

寻找由廉价元素组成、合成方法简单、催化性能高、循环稳定性好的活性稳定电催化剂是水电解制氢的关键。在本研究中，采用水热法在镍钴前驱体泡沫镍上生长了nis2纳米球。电流密度为10 mA cm-2时，析氢反应（HER）的过电位为149.7 mV，析氧反应（OER）的过电位为198 mV。稳定性测试12 h后电催化剂的形貌基本保持不变，循环测试后电催化剂的性能也保持稳定。在电流密度为10 mA cm-2的碱性海水电解环境下，HER过电位为154.5 mV， OER过电位为182.5 mV。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.