Hyeonjun Lee, Hyungjin Lee, Seung-Tae Hong, Munseok S. Chae
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引用次数: 0
Abstract
Zinc-ion batteries are gaining recognition as viable options for energy storage systems due to their air stability, abundance, affordability, and ease of use. However, existing zinc-storage materials primarily consist of intercalation cathode materials, necessitating the development of host structures with enhanced performance. Herein, the use of silver vanadate, Ag0.33V2O5, as a cathode material is explored and its detailed displacement/intercalation mechanism is elucidated, encompassing silver, proton, and zinc-ion storage behaviors. Electrochemical behavior, structural analysis, and diffusion barrier calculation techniques are used to delineate cation diffusion pathways. Additionally, 3D electron density mapping is performed to visualize the cation reaction mechanism. The proposed material demonstrates an impressive reversible capacity of about 303 mAh g−1 at a current of 0.1 A g−1, along with outstanding cycle retention stability even at high current densities.
锌离子电池因其空气稳定性、丰富度、可负担性和易用性而成为储能系统的可行选择。然而，现有的储锌材料主要由插层阴极材料组成，这就需要开发具有更高性能的主体结构。本文探索了钒酸银Ag0.33V2O5作为阴极材料，并详细阐述了其位移/插层机理，包括银、质子和锌离子的存储行为。电化学行为，结构分析和扩散势垒计算技术被用来描绘阳离子扩散途径。此外，三维电子密度映射进行可视化阳离子反应机理。该材料在0.1 a g−1电流下具有令人印象深刻的约303 mAh g−1可逆容量，即使在高电流密度下也具有出色的循环保持稳定性。
期刊介绍：
Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy.
This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g.,
new concepts of energy generation and conversion;
design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers;
improvement of existing processes;
combination of single components to systems for energy generation;
design of systems for energy storage;
production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels;
concepts and design of devices for energy distribution.
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