Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland.
Nanoscale. 2019 Nov 7;11(41):19225-19240. doi: 10.1039/c9nr05732c. Epub 2019 Sep 18.
Since the discovery of the pseudocapacitive behavior in RuO by Sergio Trasatti and Giovanni Buzzanca in 1971, materials with pseudocapacitance have been regarded as promising candidates for high-power energy storage. Pseudocapacitance-involving energy storage is predominantly based on faradaic redox reactions, but at the same time the charge storage is not limited by solid-state ion diffusion. Besides the search for pseudocapacitive materials, their implementation into non-aqueous hybrid capacitors stands for the strategy to increase power density by a rational design of the battery structure. Composed of a battery-type anode and a capacitor-type cathode, such devices show great promise to integrate the merits of both batteries and capacitors. Today, the availability of fast-charging technologies is of fundamental importance for establishing electric vehicles on a mass scale. Therefore, from the perspective of materials and battery design, understanding the basics and the recent developments of pseudocapacitive materials and non-aqueous hybrid capacitors is of great importance. With this goal in mind, we introduce here the fundamentals of pseudocapacitance and non-aqueous hybrid capacitors. In addition, we provide an overview of the latest developments in this fast growing research field.
自 1971 年 SergioTrasatti 和 GiovanniBuzzanca 在 RuO 中发现赝电容行为以来，具有赝电容的材料一直被视为高功率储能的有前途的候选材料。涉及赝电容的储能主要基于法拉第氧化还原反应，但同时电荷存储不受固态离子扩散的限制。除了寻找赝电容材料外，将其应用于非水混合电容器代表了通过合理设计电池结构来提高功率密度的策略。这种器件由电池型阳极和电容型阴极组成，有望结合电池和电容器的优点。如今，快速充电技术的可用性对于在大规模上建立电动汽车至关重要。因此，从材料和电池设计的角度来看，了解赝电容和非水混合电容器的基础和最新发展非常重要。有鉴于此，我们在这里介绍赝电容和非水混合电容器的基本原理。此外，我们还概述了这个快速发展的研究领域的最新进展。
