Layered carbon-based pseudocapacitive materials for lithium/sodium-ion capacitor with high energy-power densities and long cycle life
Layered carbon-based pseudocapacitive materials for lithium/sodium-ion capacitor with high energy-power densities and long cycle life作者机构：State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University Key Laboratory of Advanced Materials (MOE)School of Materials Science and EngineeringTsinghua University
出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))
年 卷 期：2020年第30卷第1期
页 面：20-27页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学]
基 金：the financial support from the National Natural Science Foundation of China (Grant No.51722207)
主 题：Sodium/lithium-ion capacitors High energy-power density Pseudocapacitive electrodes Layered materials
摘 要：Hybrid ion capacitors that combined high-power density of supercapacitor and high-energy density of battery are drawing attention to insufficient power densities of currently-used lithium-ion batteries（LIBs）.Two kinds of layered carbon-based pseudocapacitive materials were used as both anode and cathode for lithium/sodium ion capacitors（LICs/NICs） with balanced energy/power ***-assembled NIC and LIC could deliver the energy densities of 125.7 Wh kg;and 119.6 Wh kg;at the power density of 7941.2 W kg;and 8823.5 W kg;,*** electrochemical properties of NICs were better than that of LICs when the current density was below 4 A g;although the working voltage of LIC is higher than that of NICs,and the size of Na;is larger than that of Li;.Using an instantaneous potential technique,it is found that the increase of the capacity for anode material in low potential region will effectively enhance the electrochemical performance for the full device.
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