Hydrous Transition Metal Oxides for Electrochemical Energy and Environmental Applications

IF 10.6 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
James B. Mitchell, Matthew Chagnot, V. Augustyn
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引用次数: 0

Abstract

Hydrous transition metal oxides (TMOs) are redox-active materials that confine structural water within their bulk, organized in 1D, 2D, or 3D networks. In an electrochemical cell, hydrous TMOs can interact with electrolyte species not only via their outer surface but also via their hydrous inner surface, which can transport electrolyte species to the interior of the material. Many TMOs operating in an aqueous electrochemical environment transform to hydrous TMOs, which then serve as the electrochemically active phase. This review summarizes the physicochemical properties of hydrous TMOs and recent mechanistic insights into their behavior in electrochemical reactions of interest for energy storage, conversion, and environmental applications. Particular focus is placed on first-principles calculations and operando characterization to obtain an atomistic view of their electrochemical mechanisms. Hydrous TMOs represent an important class of energy and environmental materials in aqueous and nonaqueous environments. Further understanding of their interaction with electrolyte species is likely to yield advancements in electrochemical reactivity and kinetics for energy and environmental applications.
含水过渡金属氧化物在电化学、能源和环境方面的应用
含水过渡金属氧化物(TMOs)是一种氧化还原活性材料,将结构水限制在其体积内,以1D, 2D或3D网络组织。在电化学电池中,含水TMOs不仅可以通过其外表面与电解质相互作用,还可以通过其含水的内表面与电解质相互作用,从而将电解质输送到材料内部。许多在水电化学环境中工作的TMOs转变为含水TMOs,然后作为电化学活性相。本文综述了含水TMOs的物理化学性质及其在能量存储、转化和环境应用方面的电化学反应行为的最新机理见解。特别侧重于第一性原理计算和operando表征,以获得其电化学机制的原子观点。含水TMOs在水、非水环境中都是一类重要的能源和环境材料。进一步了解它们与电解质的相互作用可能会在能源和环境应用的电化学反应性和动力学方面取得进展。
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来源期刊
Annual Review of Materials Research
Annual Review of Materials Research 工程技术-材料科学:综合
CiteScore
17.70
自引率
1.00%
发文量
21
期刊介绍: The Annual Review of Materials Research, published since 1971, is a journal that covers significant developments in the field of materials research. It includes original methodologies, materials phenomena, material systems, and special keynote topics. The current volume of the journal has been converted from gated to open access through Annual Reviews' Subscribe to Open program, with all articles published under a CC BY license. The journal defines its scope as encompassing significant developments in materials science, including methodologies for studying materials and materials phenomena. It is indexed and abstracted in various databases, such as Scopus, Science Citation Index Expanded, Civil Engineering Abstracts, INSPEC, and Academic Search, among others.
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