Sajeev Aparna, Perumalsamy Muthukumar, Elumalai Vijaykumar, Sathyaseelan Arunprasath, Ayyappan Saj Anandhan, Anithkumar Monunith, Kim Sang-Jae
Nanomaterials & System Lab Major of Mechatronics Engineering Faculty of Applied Energy System Jeju National University Jeju 63243 South Korea.
Nanomaterials & System Lab Major of Mechanical System Engineering College of Engineering Jeju National University Jeju 63243 South Korea.
Small Sci. 2024 Jan 14;4(3):2300222. doi: 10.1002/smsc.202300222. eCollection 2024 Mar.
Industrialization of green hydrogen production through electrolyzers is hindered by cost-effective electrocatalysts and sluggish oxygen evolution reaction (OER). Herein, a facile one-step hydrothermal technique for the in situ growth of non-noble tin chalcogenides and their heterostructures on nickel foam (NF) as trifunctional electrocatalysts for hydrogen evolution reaction (HER), OER, and methanol oxidation reaction (MOR) is detailed. Among them, the heterostructured SnSe/SnTe/NF outperforms all others and recently reported catalysts, boasting an impressively low potential of -0.077, 1.51, and 1.33 V versus reversible hydrogen electrode to achieve 10 mA cm for HER, OER, and MOR. Owing to the rod-like morphology with hetero-phases for enhancing the performance. Furthermore, a hybrid MOR-mediated water electrolyzer requiring only 1.49 V to achieve 10 mA cm with value-added formate is introduced and traditional water electrolyzer is outperformed. Additionally, a zero-gap commercial anion-exchange membrane water electrolyzer (AEMWE) with bifunctional SnSe/SnTe/NF electrodes is tested, successfully achieving an industrially required 1 A cm at a low potential of 1.93 V at 70 °C. Moreover, AEMWE using a windmill is powered and H and O production with wind speed is measured. Overall, this work paves the development of unexplored tin chalcogenide heterostructure as a potent candidate for cost-effective, energy-efficient, and carbon-neutral hydrogen production.
通过电解槽实现绿色制氢工业化受到具有成本效益的电催化剂和缓慢的析氧反应（OER）的阻碍。在此，详细介绍了一种简便的一步水热技术，用于在泡沫镍（NF）上原位生长非贵金属硫属锡化物及其异质结构，作为析氢反应（HER）、OER和甲醇氧化反应（MOR）的三功能电催化剂。其中，异质结构的SnSe/SnTe/NF优于所有其他材料以及最近报道的催化剂，在相对于可逆氢电极达到10 mA cm时，HER、OER和MOR的过电位分别低至-0.077 V、1.51 V和1.33 V。由于具有异质相的棒状形态，其性能得到增强。此外，还介绍了一种仅需1.49 V就能实现10 mA cm且生成增值甲酸盐的混合MOR介导水电解槽，其性能优于传统水电解槽。此外，还测试了一种带有双功能SnSe/SnTe/NF电极的零间隙商用阴离子交换膜水电解槽（AEMWE），在70°C下以1.93 V的低电位成功实现了工业所需的1 A cm。此外，还利用风车为AEMWE供电，并测量了风速下的氢气和氧气产量。总的来说，这项工作为开发未探索的硫属锡化物异质结构铺平了道路，这种异质结构是具有成本效益、能源高效和碳中性制氢潜力的候选材料。
