Defect Sites-Rich Porous Carbon with Pseudocapacitive Behaviors as an Ultrafast and Long-Term Cycling Anode for Sodium-Ion Batteries

ACS Applied Materials & Interfaces
Nana WangShixue Dou

Abstract

Room-temperature sodium-ion batteries have been regarded as promising candidates for grid-scale energy storage due to their low cost and the wide distribution of sodium sources. The main scientific challenge for their practical application is to develop suitable anodes with long-term cycling stability and high rate capacity. Here, novel hierarchical three-dimensional porous carbon materials are synthesized through an in situ template carbonization process. Electrochemical examination demonstrates that carbonization temperature is a key factor that affects Na+-ion-storage performance, owing to the consequent differences in surface area, pore volume, and degree of crystallinity. The sample obtained at 600 °C delivers the best sodium-storage performance, including long-term cycling stability (15 000 cycles) and high rate capacity (126 mAh g-1 at 20 A g-1). Pseudocapacitive behavior in the Na+-ion-storage process has been confirmed and studied via cyclic voltammetry. Full cells based on the porous carbon anode and Na3V2(PO4)3-C cathode also deliver good cycling stability (400 cycles). Porous carbon, combining the merits of high energy density and extraordinary pseudocapacitive behavior after cycling stability, can be a promising re...Continue Reading

References

Apr 16, 2013·Nature Materials·Veronica AugustynBruce Dunn
Jul 18, 2014·Nature Communications·Prabeer BarpandaAtsuo Yamada
Oct 30, 2014·Chemical Reviews·M Stanley Whittingham
Nov 13, 2014·Chemical Reviews·Naoaki YabuuchiShinichi Komaba
Aug 5, 2015·Nano Letters·Clement BommierXiulei Ji
Oct 1, 2015·Advanced Materials·Young Soo YunKisuk Kang
May 11, 2016·ACS Central Science·Wei LuoXiulei Ji

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Citations

Jan 14, 2020·Advanced Materials·Yiqiong ZhangShuangyin Wang
Mar 11, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhiqiang LiFangcai Zheng
Jan 21, 2020·ACS Applied Materials & Interfaces·Hanqing ZhaoZhong Li

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