Vertical 3D Nanostructures Boost Efficient Hydrogen Production Coupled with Glycerol Oxidation Under Alkaline Conditions.
Vertical 3D Nanostructures Boost Efficient Hydrogen Production Coupled with Glycerol Oxidation Under Alkaline Conditions.
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DOI：
10.1007/s40820-023-01150-1
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发表时间：
2023-07-29
影响因子：
26.6
通讯作者：
Ma, Ruguang
中科院分区：
文献类型：
--
作者：
Li, Shanlin;Liu, Danmin;Wang, Guowei;Ma, Peijie;Wang, Xunlu;Wang, Jiacheng;Ma, Ruguang
关键词：
采用简单的水热和热处理工艺分别进行析氢反应和甘油氧化反应（戈尔），成功制备了两种垂直的三维纳米结构。通过用戈尔代替析氧反应，实现了在较低电位下的氢气产生，使装置电位降低约300 mV。此外，有机膜用作分离器，避免了使用昂贵的阴离子交换膜。在线版本包含补充材料，可通过10.1007/s40820-023-01150-1获得。电解水制氢是实现可再生能源转化和碳中和的重要可持续技术。然而，它受到阳极析氧反应（OER）高过电位的限制。为了降低电解槽的操作电压，本文提出了用热力学上有利的甘油氧化反应（戈尔）代替OER。此外，垂直NiO薄片和NiMoNH纳米柱被开发以分别促进阳极戈尔和阴极析氢的反应动力学。同时，排除了H2/O2混合气体的爆炸危险，采用廉价的有机膜代替电解槽中昂贵的阴离子交换膜。令人印象深刻的是，该电解槽的工作电压显著降低了280 mV，并具有良好的长期稳定性。本研究为低成本、高可行性的制氢提供了一种新的范例。在线版本包含补充材料，可通过10.1007/s40820-023-01150-1获得。
Two types of vertical 3D nanostructures were successfully fabricated using simple hydrothermal and heat treatment processes for hydrogen evolution reaction and glycerol oxidation reaction (GOR). Hydrogen production at a lower potential was achieved by replacing oxygen evolution reaction with GOR, reducing the device potential by approximately 300 mV. Additionally, organic membranes were used as separators, avoiding the use of expensive anion exchange membranes. The online version contains supplementary material available at 10.1007/s40820-023-01150-1. Hydrogen production from electrolytic water is an important sustainable technology to realize renewable energy conversion and carbon neutrality. However, it is limited by the high overpotential of oxygen evolution reaction (OER) at the anode. To reduce the operating voltage of electrolyzer, herein thermodynamically favorable glycerol oxidation reaction (GOR) is proposed to replace the OER. Moreover, vertical NiO flakes and NiMoNH nanopillars are developed to boost the reaction kinetics of anodic GOR and cathodic hydrogen evolution, respectively. Meanwhile, excluding the explosion risk of mixed H2/O2, a cheap organic membrane is used to replace the expensive anion exchange membrane in the electrolyzer. Impressively, the electrolyzer delivers a remarkable reduction of operation voltage by 280 mV, and exhibits good long-term stability. This work provides a new paradigm of hydrogen production with low cost and good feasibility. The online version contains supplementary material available at 10.1007/s40820-023-01150-1.
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影响因子：
16.6
作者：
通讯作者：
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影响因子：
17.6
作者：
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影响因子：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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