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115. Self-powered electrolysis systems for sustainable hydrogen generation from natural seawater via a Ni/V2O3 Schottky electrode, Chem Eng J, 2022, 450, 138079
2022-06-30 07:48  

Guangbo Liu a, Honghao Lv a, Qinghao Quan a, Xiaolei Li a, Huasen Lu a, Wenzhen Li b, Xuejing Cui a, and Luhua Jiang a, *

a Nanomaterial & Electrocatalysis Laboratory, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China

b Department of Chemical & Biological Engineering, Iowa State University, Ames, IA 50011-1098, Unites States.

* Email: luhuajiang@qust.edu.cn

Keywords: Self-powered electrolysis system; Mg/seawater battery; Ni/V2O3; Schottky electrode; hydrogen generation

Abstract: Developing novel and efficient techniques for extracting hydrogen from natural seawater sustainably via electrolysis is highly attractive, yet remains a great challenge. Herein, a self-powered electrolysis system (SPES) driven by Mg/seawater batteries (MSBs) with a Ni/V2O3 Schottky electrode is demonstrated for sustainable production of hydrogen from seawater. The Ni/V2O3 Schottky electrode is constructed to serve as the hydrogen evolution reaction (HER) cathode for both the MSBs and seawater electrolysis unit in the SPES, enabling facile seawater HER with 10 and 1000 mA cm-2 at low overpotential of 176 and 649 mV respectively. The MSB with the Ni/V2O3 Schottky cathode delivers a peak power density up to 17.81 mW cm-2. Importantly, the designed SPES achieves a high hydrogen production rate up to 12.42 mL cm-2 h-1 from natural seawater with a high energy conversion efficiency of 80.87%. This work offers an intriguing technique for in-situ sustainable acquisition of hydrogen from natural seawater.

https://doi.org/10.1016/j.cej.2022.138079


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能源短缺和环境污染是当今世界面临的两大难题,研究团队围绕洁净高效新型电能源技术,聚焦电能源相关的纳米材料和电催化应用基础研究。团队获得国家自然科学二等奖1项、国家技术发明二等奖1项、省部级奖励4项,发表SCI论文200余篇,他引4000余次,获授权专利20余件。承担国家973前期研究专项、国家自然科学基金、山东省重点研究计划等多项国家级和省部级项目。团队负责人姜鲁华教授获得中国科学院“百人计划”择优支持,入选山东省“泰山学者”。
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