Wang Maoyu, Feng Zhenxing
School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA.
Chem Commun (Camb). 2021 Oct 12;57(81):10453-10468. doi: 10.1039/d1cc01703a.
Electrochemical energy systems such as batteries, water electrolyzers, and fuel cells are considered as promising and sustainable energy storage and conversion devices due to their high energy densities and zero or negative carbon dioxide emission. However, their widespread applications are hindered by many technical challenges, such as the low efficiency and poor long-term cyclability, which are mostly affected by the changes at the reactant/electrode/electrolyte interfaces. These interfacial processes involve ion/electron transfer, molecular/ion adsorption/desorption, and complex interface restructuring, which lead to irreversible modifications to the electrodes and the electrolyte. The understanding of these interfacial processes is thus crucial to provide strategies for solving those problems. In this review, we will discuss different interfacial processes at three representative interfaces, namely, solid-gas, solid-liquid, and solid-solid, in various electrochemical energy systems, and how they could influence the performance of electrochemical systems.
诸如电池、水电解槽和燃料电池等电化学能量系统，因其高能量密度以及零或负二氧化碳排放，被视为有前景的可持续能量存储和转换装置。然而，它们的广泛应用受到许多技术挑战的阻碍，比如效率低下和长期循环稳定性差，而这些大多受反应物/电极/电解质界面处变化的影响。这些界面过程涉及离子/电子转移、分子/离子吸附/解吸以及复杂的界面重构，这会导致电极和电解质发生不可逆的改变。因此，理解这些界面过程对于提供解决这些问题的策略至关重要。在本综述中，我们将讨论各种电化学能量系统中三个代表性界面，即固-气、固-液和固-固界面处的不同界面过程，以及它们如何影响电化学系统的性能。
