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Decoupled Electrochemical Water Splitting: From Fundamentals to Applications

机译：去耦电化学水分解：从基本上到应用

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摘要

Electrolytic water splitting to generate hydrogen and oxygen is one of the most promising ways in which to harness intermittent renewable power sources and store the energy these provide as a clean-burning and sustainable fuel. In recent years, this has led to an explosion in reports on electrochemical water splitting, most of them focused on improving the efficiency of the electrochemical reactions themselves. However, efficient generation of hydrogen and oxygen is of little use if these products cannot be kept separate and the community is now coming to realize that there are considerable challenges associated with maintaining adequate separation between H(2)and O(2)during electrolysis driven by intermittent renewable sources. Decoupled electrolysis (whereby oxygen production occurs with reduction of a suitable mediator and hydrogen production is then paired with the reoxidation of this mediator) offers a solution to many of these challenges by allowing O(2)and H(2)to be produced at different times, at different rates, and even in completely different electrochemical cells. In this review, an overview of recent progress in the field of decoupled electrolysis for water splitting is given and the potential that this approach has for enabling a range of other sustainable chemical processes is explored.
机译：产生氢气和氧气的电解水分是用于利用间歇性可再生电源的最有希望的方式之一，并将这些能量存储为清洁燃烧和可持续的燃料。近年来，这导致了关于电化学水分裂的报道中的爆炸，其中大多数集中于提高电化学反应本身的效率。然而，如果这些产品不能保持分开，并且现在来实现，则有效地产生氢气和氧气几乎没有使用，并且该社区即将意识到在电解驱动期间保持H（2）和O（2）之间的足够分离有相当大的挑战通过间歇性可再生来源。去耦电解（随着该介体的再氧合，通过减少合适的介体和氢气产生的氧气产生的氧气产生）通过允许在不同的情况下产生O（2）和H（2）来对许多这些挑战提供解决方案时间，以不同的速率，甚至在完全不同的电化学细胞中。在本文中，给出了用于水分裂的去耦电解领域的最近进展的概述，并且探讨了这种方法能够实现一系列其他可持续化学过程的潜力。

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