Rational Design of NiSe/ReSe2 Nanocomposite For Efficient Electrochemical Hydrogen Evolution Reaction
Rational Design of NiSe/ReSe2 Nanocomposite For Efficient Electrochemical Hydrogen Evolution Reaction
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用于高效电化学析氢反应的 NiSe/ReSe2 纳米复合材料的合理设计
DOI：
10.1149/1945-7111/aca2eb
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发表时间：
2022-11
影响因子：
3.9
通讯作者：
Qing Yang
中科院分区：
文献类型：
--
作者：
Fozia Sultana;Muhammad Mushtaq;Sultan Althahban;Tabassum Ferdous;Samreena Firdous;Abid Zaman;Muhammad Azeem;Qing Yang
可再生能源系统中的析氢反应（HER）一直是一个迷人的过程，但设计高效和超稳定的电催化剂具有挑战性。基于过渡金属的异质结构纳米杂化物目前在电解领域引起了更多的兴趣，因为纳米杂化物可以优化动力学过程，同时降低电荷转移电阻并增加反应界面处的电化学活性电极的表面积。在这里，我们提出了一个概念，两步胶体热注入电催化剂的基础上NiSe/ReSe 2纳米复合材料，是非常有效的析氢在酸性条件下。所获得的纳米复合材料有效地工作，与每个单独的组分即NiSe纳米颗粒和ReSe 2纳米片相比，在相对于RHE的120 mV的显著更低的过电位下获得10 mA cm-2的电流密度。然而，作为单组分催化剂，ReSe 2纳米片和NiSe纳米颗粒分别在172 mV和221 mV的较高过电位下实现了10 mA cm-2的电流密度。更有趣的是，NiS/ReSe 2纳米复合材料被认为可以为HER提供更快的动力学过程，正如115 mV dec−1的塔菲尔斜率所证明的那样，这肯定低于纯NiSe和ReSe 2的179 mV dec−1和190 mV dec−1。假设NiSe纳米晶和ReSe 2纳米片以协同方式工作，以产生导致电催化性能显著增加的电子结构修饰。为了在固体中制造高度调谐的电催化剂，我们预计混合结构的制造将是一个成功的策略。
The hydrogen evolution reaction (HER) in renewable energy systems has long been a fascinating process, but designing highly efficient and ultrastable electrocatalysts is challenging. Transition metal-based heterostructure nanohybrids are currently drawing more interest in the field of electrolysis because nanohybids can optimize kinetic processes while simultaneously lowering charge transfer resistance and increasing the electrochemically active electrode’s surface area at the reaction interface. Here, we propose a concept for a two-step colloidal hot injection electrocatalyst based on NiSe/ReSe2 nanocomposites that is extremely effective for hydrogen evolution under acidic conditions. The as-obtained nanocomposite material worked efficiently, attaining a current density of 10 mA cm−2 at a substantially lower over-potential of 120 mV vs RHE as compared to each of the individual components i.e. NiSe nanoparticles and ReSe2 nanosheets. As single component catalysts, ReSe2 nanosheets and NiSe nanoparticles, however, achieved current densities of 10 mA cm−2 at higher overpotentials of 172 mV and 221 mV, respectively. Even more intriguingly, the NiS/ReSe2 nanocomposite is believed to give a faster kinetic process for HER, as evidenced by a Tafel slope of 115 mV dec−1, which certainly is lower than that of the 179 mV dec−1 and 190 mV dec−1 for pure NiSe and ReSe2, respectively. NiSe nanocrystallites and ReSe2 nanosheets were assumed to be working in a synergistic manner to generate the electronic structural modification that led to the noticeably increased electrocatalytic properties. In order to make highly tuned electrocatalysts in solids, we anticipate that the fabrication of hybrid structures will be a successful strategy.