异质结
储能
堆积
材料科学
石墨烯
纳米技术
电化学储能
电极
制作
锂(药物)
电化学
工程物理
计算机科学
光电子学
功率(物理)
超级电容器
化学
工程类
物理化学
替代医学
有机化学
量子力学
病理
内分泌学
物理
医学
作者
Ekaterina Pomerantseva,Yury Gogotsi
出处
期刊:Nature Energy
[Springer Nature]
日期:2017-06-12
卷期号:2 (7)
被引量:867
标识
DOI:10.1038/nenergy.2017.89
摘要
Two-dimensional (2D) materials provide slit-shaped ion diffusion channels that enable fast movement of lithium and other ions. However, electronic conductivity, the number of intercalation sites, and stability during extended cycling are also crucial for building high-performance energy storage devices. While individual 2D materials, such as graphene, show some of the required properties, none of them can offer all properties needed to maximize energy density, power density, and cycle life. Here we argue that stacking different 2D materials into heterostructured architectures opens an opportunity to construct electrodes that would combine the advantages of the individual building blocks while eliminating the associated shortcomings. We discuss characteristics of common 2D materials and provide examples of 2D heterostructured electrodes that showed new phenomena leading to superior electrochemical performance. We also consider electrode fabrication approaches and finally outline future steps to create 2D heterostructured electrodes that could greatly expand current energy storage technologies. Heterostructures with alternating layers of different 2D materials are finding increasing attention in energy applications. Pomerantseva and Gogotsi survey the opportunities and challenges of both developing the heterostructures and their implementation in energy storage devices.
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