双金属片
磷化物
超级电容器
储能
异质结
电化学
电极
功率密度
纳米复合材料
纳米技术
电化学储能
材料科学
化学
光电子学
镍
功率(物理)
金属
冶金
物理化学
物理
量子力学
作者
S.K. Tarik Aziz,Surender Kumar,Sk Riyajuddin,Kaushik Ghosh,Gilbert Daniel Nessim,Deepak P. Dubal
标识
DOI:10.1021/acs.jpclett.1c00562
摘要
Supercapacitors (SCs) are considered promising energy storage systems because of their high power output and long-term cycling stability; however, they usually exhibit poor energy density. The hybrid supercapacitor (HSC) is an emerging concept in which two dissimilar electrodes with different charge storage mechanisms are paired to deliver high energy without sacrificing power output. This Perspective highlights the features of transition-metal phosphides (TMPs) as the positive electrode in HSCs. In particular, bimetallic nickel cobalt phosphide (NiCoP) with multiple redox sites, excellent electrochemical reversibility, and stability is discussed. We outline how the rational heterostructures, elemental variations, and nanocomposite morphologies tune the electrochemical properties of NiCoP as the positive electrode in HSCs. The Perspective further sheds light on NiCoP-based composites that help in improving the overall performance of HSCs in terms of energy density and cycling stability. The key scientific challenges and perspectives on building efficient and stable HSCs for future applications are discussed.
科研通智能强力驱动
Strongly Powered by AbleSci AI