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gy_xmc2015

铜虫 (小有名气)

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虫号: 4236684
注册: 2015-11-21
专业: 膜生物化学与膜生物物理学

[交流] 【综述推荐】用于电化学电容器的赝电容材料：从定向合成到电容量最大化（南航刘校刚）已有2人参与

文章题目：Pseudocapacitive materials for electrochemical capacitors: from rational synthesis to capacitance optimization

文章链接（免费获取，欢迎点击下载！）：https://doi.org/10.1093/nsr/nww072

摘要：
电化学电容器（EC）是拥有多种突出性能的储能装置，但其能量密度相对较低。提高EC能量密度的一个方法是：从传统碳基双电层电容器转向具有更高电容量的赝电容电容器。然而与碳基材料相比，赝电容电极对电子或离子转移的抵抗性更高，这大大限制了其容量、倍率和循环性能。电极材料的定向设计合成，为优化其电化学性能提供了可能，从而使器件可以在保持高功率密度的同时具有高能量密度。本文综述了研究者们为提高EC能量和功率密度，而进行的各种电极材料改进方面的尝试。

Among various energy-storage devices, electrochemical capacitors (ECs) are prominent power provision but show relatively low energy density. One way to increase the energy density of ECs is to move from carbon-based electric double-layer capacitors to pseudocapacitors, which manifest much higher capacitance. However, compared with carbon materials, the pseudocapacitive electrodes suffer from high resistance for electron and/or ion transfer, significantly restricting their capacity, rate capability and cyclability. Rational design of electrode materials offers opportunities to optimize their electrochemical performance, leading to devices with high energy density while maintaining high power density. This paper reviews the different approaches of electrodes striving to advance the energy and power density of ECs.

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