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Replacing Oxygen Evolution with Hydrazine Borane Oxidation for Energy-Saving Electrochemical Hydrogen Production
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-07-06 , DOI: 10.1021/acs.inorgchem.3c01090 Yefei Peng 1 , Minsong Huang 1 , Qifeng Yang 2 , Zhiyuan Xing 1 , Zhang-Hui Lu 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-07-06 , DOI: 10.1021/acs.inorgchem.3c01090 Yefei Peng 1 , Minsong Huang 1 , Qifeng Yang 2 , Zhiyuan Xing 1 , Zhang-Hui Lu 1
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Electrochemical water splitting is a green strategy for hydrogen (H2) production but is severely hindered by the sluggish anodic oxygen evolution reaction (OER). Therefore, replacing the sluggish anodic OER with more favorable oxidation reactions is an energy-saving approach for hydrogen production. Hydrazine borane (HB, N2H4BH3) is considered a potential hydrogen storage material due to its easy preparation, nontoxicity, and high chemical stability. Furthermore, the complete electrooxidation of HB has a unique characteristic of a much lower potential compared to that of OER. All these make it an ideal alternative for energy-saving electrochemical hydrogen production, however, which has never been reported so far. Herein, HB oxidation (HBOR)-assisted overall water splitting (OWS) is proposed for the first time for energy-saving electrochemical hydrogen production. The as-synthesized NiCoP@CoFeP nanoneedle array catalyst exhibited superefficient OER, hydrogen evolution reaction (HER), and HBOR performance. Impressively, NiCoP@CoFeP serves as both anodic and cathodic electrocatalysts for HB-assisted OWS, only requires a low cell voltage of only 0.078 V to achieve a current density of 10 mA cm–2, which was 1.4 V lower than that for HB-free OWS, indicating the highly energy-saving H2 production.
中文翻译：
用肼硼烷氧化代替析氧实现节能电化学制氢
电化学水分解是一种生产氢气（H 2）的绿色策略，但受到缓慢的阳极析氧反应（OER）的严重阻碍。因此，用更有利的氧化反应代替缓慢的阳极OER是一种节能的制氢方法。肼硼烷 (HB, N 2 H 4 BH 3）由于其易于制备、无毒、化学稳定性高，被认为是一种潜在的储氢材料。此外，HB的完全电氧化具有比OER低得多的电势的独特特性。所有这些使其成为节能电化学制氢的理想替代方案，但迄今为止尚未有报道。在此，首次提出HB氧化（HBOR）辅助整体水分解（OWS）用于节能电化学制氢。合成的 NiCoP@CoFeP 纳米针阵列催化剂表现出超高效的 OER、析氢反应 (HER) 和 HBOR 性能。令人印象深刻的是，NiCoP@CoFeP 可用作 HB 辅助 OWS 的阳极和阴极电催化剂，仅需要 0 的低电池电压。–2，比无HB OWS低1.4 V，表明H 2生产高度节能。
更新日期：2023-07-06
中文翻译：
用肼硼烷氧化代替析氧实现节能电化学制氢
电化学水分解是一种生产氢气（H 2）的绿色策略，但受到缓慢的阳极析氧反应（OER）的严重阻碍。因此，用更有利的氧化反应代替缓慢的阳极OER是一种节能的制氢方法。肼硼烷 (HB, N 2 H 4 BH 3）由于其易于制备、无毒、化学稳定性高，被认为是一种潜在的储氢材料。此外，HB的完全电氧化具有比OER低得多的电势的独特特性。所有这些使其成为节能电化学制氢的理想替代方案，但迄今为止尚未有报道。在此，首次提出HB氧化（HBOR）辅助整体水分解（OWS）用于节能电化学制氢。合成的 NiCoP@CoFeP 纳米针阵列催化剂表现出超高效的 OER、析氢反应 (HER) 和 HBOR 性能。令人印象深刻的是，NiCoP@CoFeP 可用作 HB 辅助 OWS 的阳极和阴极电催化剂，仅需要 0 的低电池电压。–2，比无HB OWS低1.4 V，表明H 2生产高度节能。
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