Jia Wenzhi, Lu Qian, Zheng Wenjun, Wang Kunyan, Liu Xinhua, Yang Shichun, He Bin
Department of Materials Engineering, Huzhou University Huzhou 313000 China
School of Transportation Science and Engineering, Beihang University Beijing 100191 China.
Nanoscale Adv. 2023 Jul 13;5(16):4133-4139. doi: 10.1039/d3na00348e. eCollection 2023 Aug 8.
As an efficient, renewable and clean energy, hydrogen is expected to replace traditional fossil fuel energy in the future. Currently, platinum-based materials (Pt) are excellent electrocatalysts for hydrogen evolution reaction (HER), but their high cost and low natural abundance limit their widespread application. Therefore, it is urgent to develop low-cost, highly efficient and earth-abundant electrocatalysts to replace the precious platinum-based materials. In this study, a Co-based organic framework (ZIF-67) was grown on a flexible substrate carbon cloth (CC), and a V-doped CoP nanoarray (V-CoP/CC) was prepared using a simple ion exchange/phosphating method. Due to its unique porous structure, effective doping of V atoms and the electrode construction, the V-CoP/CC exhibited high electrolytic hydrogen evolution reaction (HER) performance, with an overpotential of 98 mV at a current density of 10 mA cm. This work has important theoretical and practical significance for construction of heteroatom-doped CoP electrodes.
作为一种高效、可再生且清洁的能源，氢气有望在未来取代传统的化石燃料能源。目前，铂基材料（Pt）是析氢反应（HER）的优异电催化剂，但其高成本和低自然丰度限制了它们的广泛应用。因此，迫切需要开发低成本、高效且储量丰富的电催化剂来取代珍贵的铂基材料。在本研究中，一种钴基金属有机框架（ZIF-67）生长在柔性基底碳布（CC）上，并采用简单的离子交换/磷化方法制备了钒掺杂的CoP纳米阵列（V-CoP/CC）。由于其独特的多孔结构、V原子的有效掺杂以及电极结构，V-CoP/CC表现出高的电解析氢反应（HER）性能，在电流密度为10 mA cm时过电位为98 mV。这项工作对杂原子掺杂的CoP电极的构建具有重要的理论和实际意义。
