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首页> 外文期刊>RSC Advances >Highly cost-effective platinum-free anion exchange membrane electrolysis for large scale energy storage and hydrogen production
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Highly cost-effective platinum-free anion exchange membrane electrolysis for large scale energy storage and hydrogen production

机译：高度经济高效的铂无阴离子交换膜电解，用于大规模储能和氢气生产

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摘要

Anion exchange membrane (AEM) electrolysis eradicates platinum group metal electrocatalysts and diaphragms and is used in conventional proton exchange membrane (PEM) electrolysis and alkaline electrolysis. It can produce pressurised hydrogen by using low cost non-noble metal catalysts. However, the performances are still lower than that of the conventional PEM electrolysis technology. In this study, we addressed the performance issue by using a novel combination of Ni–Fe–O _( x ) for oxygen evolution reaction (OER) and Ni–Fe–Co hydrogen evolution reaction (HER) electrodes with a PBI anion exchange membrane. The Ni–Fe–O _( x ) and Ni–Fe–Co electrodes exhibit exceptionally high catalytic activity, requiring over potentials that are as low as 236 and 84 mV dec ~(?1) , respectively, for OER and HER to occur. These electrocatalysts exhibits excellent durability which can be used as oxygen evolution and hydrogen evolution catalysts for long term electrolysis. The high rate capability of 1000 mA cm ~(?2) at 1.9 V and 60 °C demonstrates the potential of the combined membrane electrode assembly. The best performance, which is comparable to those of commercial PEM electrolysis systems, is thus an affordable alternative to this technology. In addition to that, the AEM electrolysis is promising on a multi-scale level for long-term hydrogen production.
机译：阴离子交换膜（AEM）电解根除铂族金属电催化剂和隔膜，并用于常规质子交换膜（PEM）电解和碱性电解。它可以通过使用低成本的非贵金属催化剂来生产加压氢。然而，性能仍然低于传统PEM电解技术的性能。在这项研究中，我们通过使用具有PBI阴离子交换膜的氧化反应（OER）和Ni-Fe-Co氢进化反应（HER）电极的Ni-Fe-O _（X）的新组合来解决性能问题。 Ni-Fe-O _（X）和Ni-Fe-Co电极表现出极高的催化活性，需要分别低至236和84 mV DEC〜（？1）的电位，用于遮挡伊尔和她。这些电催化剂具有优异的耐久性，可用作长期电解的氧气逸出和氢进化催化剂。在1.9 V和60°C时1000 mA cm〜（Δ2）的高速率能力演示了组合膜电极组件的电位。因此，与商业PEM电解系统相当的最佳性能是这项技术的负担得起的替代品。除此之外，AEM电解在长期氢生产的多尺度水平上具有很有希望。

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