Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, 350117, China.
Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China.
Adv Sci (Weinh). 2022 Mar;9(7):e2104916. doi: 10.1002/advs.202104916. Epub 2022 Jan 12.
Acidified water electrolysis with fast kinetics is widely regarded as a promising option for producing H . The main challenge of this technique is the difficulty in realizing sustainable H production (SHP) because of the poor stability of most electrode catalysts, especially on the anode side, under strongly acidic and highly polarized electrochemical environments, which leads to surface corrosion and performance degradation. Research efforts focused on tuning the atomic/nano structures of catalysts have been made to address this stability issue, with only limited effectiveness because of inevitable catalyst degradation. A systems approach considering reaction types and system configurations/operations may provide innovative viewpoints and strategies for SHP, although these aspects have been overlooked thus far. This review provides an overview of acidified water electrolysis for systematic investigations of these aspects to achieve SHP. First, the fundamental principles of SHP are discussed. Then, recent advances on design of stable electrode materials are examined, and several new strategies for SHP are proposed, including fabrication of symmetrical heterogeneous electrolysis system and fluid homogeneous electrolysis system, as well as decoupling/hybrid-governed sustainability. Finally, remaining challenges and corresponding opportunities are outlined to stimulate endeavors toward the development of advanced acidified water electrolysis techniques for SHP.
酸化水的快速动力学电解被广泛认为是生产 H 的一种很有前途的选择。该技术的主要挑战是，由于大多数电极催化剂在强酸和高极化电化学环境下的稳定性差，特别是在阳极侧，难以实现可持续的 H 生产 (SHP)，这会导致表面腐蚀和性能下降。研究人员致力于调整催化剂的原子/纳米结构，以解决这个稳定性问题，但由于催化剂不可避免的降解，效果有限。考虑反应类型和系统配置/操作的系统方法可能为 SHP 提供创新的观点和策略，尽管迄今为止这些方面一直被忽视。本综述提供了一个关于酸化水电解的概述，以系统地研究这些方面，实现 SHP。首先，讨论了 SHP 的基本原理。然后，考察了设计稳定电极材料的最新进展，并提出了几种实现 SHP 的新策略，包括制造对称异质电解系统和流体均相电解系统，以及解耦/混合控制的可持续性。最后，概述了剩余的挑战和相应的机遇，以激发努力开发先进的酸化水电解技术，实现 SHP。
