Direct Electrolytic Splitting of Seawater: Opportunities and Challenges
Direct Electrolytic Splitting of Seawater: Opportunities and Challenges
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DOI：
10.1021/acsenergylett.9b00220
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发表时间：
2019-04-01
影响因子：
22
通讯作者：
Strasser, Peter
中科院分区：
文献类型：
--
作者：
Dresp, Soeren;Dionigi, Fabio;Strasser, Peter
炎热、沿海、极度干旱的地区有强烈的太阳照射和强烈的陆上和海上风力模式，是使用风力涡轮机或光伏发电生产可再生电力的理想地点。由于这些地区有充足的海水和稀缺的淡水资源，因此直接和选择性地将海水电解分解为分子氢和分子氧是一项潜在的有吸引力的技术。关键的催化挑战在于阳极氯化学和析氧反应（OER）之间的竞争。本展望讨论了与配备选择性OER和析氢反应（HER）电催化剂的直接海水电解槽有关的一些方面。从历史背景到最近的成就，它将提供对该主题的现状和未来前景的见解。本展望还讨论了直接海水电解与氢燃料电池技术（可逆海水电解）相结合的前景，并讨论了其作为能源转换-淡水生产联合技术的适用性。
Hot, coastal, hyper-arid regions with intense solar irradiation and strong on- and off-shore wind patterns are ideal locations for the production of renewable electricity using wind turbines or photovoltaics. Given ample access to seawater and scarce freshwater resources, such regions make the direct and selective electrolytic splitting of seawater into molecular hydrogen and oxygen a potentially attractive technology. The key catalytic challenge consists of the competition between anodic chlorine chemistry and the oxygen evolution reaction (OER). This Perspective addresses some aspects related to direct seawater electrolyzers equipped with selective OER and hydrogen evolution reaction (HER) electrocatalysts. Starting from a historical background to the most recent achievements, it will provide insights into the current state and future perspectives of the topic. This Perspective also addresses prospects of the combination of direct seawater electrolysis with hydrogen fuel cell technology (reversible seawater electrolysis) and discusses its suitability as combined energy conversion-freshwater production technology.