Abstract The development of novel, efficient, durable and cheap electrocatalysts for hydrogen evolution reaction (HER) by electrochemical water-splitting is pivotal to solving the persisting energy problem related to hydrogen utilization as a renewable energy. Thus, Pt-like materials that are efficient, stable and cheap must be fabricated to overcome the commercial challenges facing electrocatalysts. Herein, biomass derived Mo2C/C electrocatalysts based on watermelon peels were fabricated for HER application through a simplistic two step approach and easy pyrolysis procedure. Benefiting from the excellent HER performances, abundant mass transfer of electrons, large surface areas and unique pore sizes of the fabricated Mo2C/C electrocatalysts, Mo2C/C-800 °C required geometrical overpotential of 133 mV to deliver a current density of 10 mA cm - 2 in 1.0 M of KOH solution; and further displayed long-term durability process for 300 h . This study therefore introduced a novel approach to designing excellent electrocatalysts from biomass waste for HER application.

中文翻译：

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用于高效析氢反应的多孔碳基生物质衍生电催化剂的简单两步制造

摘要 通过电化学水分解开发新型、高效、耐用和廉价的析氢反应（HER）电催化剂对于解决与氢作为可再生能源利用相关的持续能源问题至关重要。因此，必须制造高效、稳定且廉价的 Pt 类材料，以克服电催化剂面临的商业挑战。在此，基于西瓜皮的生物质衍生的 Mo2C/C 电催化剂通过简单的两步法和简单的热解程序制备用于 HER 应用。得益于所制备的 Mo2C/C 电催化剂优异的 HER 性能、丰富的电子传质、大表面积和独特的孔径，Mo2C/C-800 °C 需要 133 mV 的几何过电位才能在 1.0 M KOH 溶液中提供 10 mA cm - 2 的电流密度；并进一步显示了 300 小时的长期耐久性过程。因此，这项研究引入了一种新方法，可以从生物质废物中设计出用于 HER 应用的优良电催化剂。