Sodium Ion Capacitor Using Pseudocapacitive Layered Ferric Vanadate Nanosheets Cathode

IScience
Qiulong WeiLiqiang Mai

Abstract

Sodium ion capacitors (SICs) are designed to deliver both high energy and power densities at low cost. Electric double-layer capacitive cathodes are typically used in these devices, but they lead to very limited capacity. Herein, we apply a pseudocapacitive layered ferric vanadate (Fe-V-O) as cathode to construct non-aqueous SICs with both high energy and power densities. The Fe-V-O nanosheets cathode displays remarkable rate capability and cycling stability. The pseudocapacitive sodium storage mechanism of Fe-V-O, with over 83% of total capacity from capacitive contribution, is confirmed by kinetics analysis and ex situ characterizations. The capacitive-adsorption mechanism of hard carbon (HC) anode is demonstrated, and it delivers excellent rate capability. Based on as-synthesized materials, the assembled HC//Fe-V-O SIC delivers a maximum energy density of 194 Wh kg-1 and power density of 3,942 W kg-1. Our work highlights the advantages of pseudocapacitive cathodes for achieving both high energy and power densities in sodium storage devices.

References

Apr 16, 2013·Nature Materials·Veronica AugustynBruce Dunn
Jul 11, 2014·Chemical Reviews·Vanchiappan AravindanSrinivasan Madhavi
Nov 13, 2014·Chemical Reviews·Naoaki YabuuchiShinichi Komaba
Apr 4, 2015·Nature Communications·Xianfen WangAtsuo Yamada
Aug 13, 2015·The Journal of Physical Chemistry Letters·Yohan Dall'AgnesePatrice Simon
Jan 20, 2016·Accounts of Chemical Research·Wei LuoLiangbing Hu
Apr 1, 2016·Journal of the American Chemical Society·Alexander C ForseClare P Grey
Aug 27, 2016·Accounts of Chemical Research·Jessica L DurhamKenneth J Takeuchi
Sep 8, 2016·Nature Communications·Maria R LukatskayaYury Gogotsi
Mar 30, 2017·Chemical Society Reviews·Jang-Yeon HwangYang-Kook Sun
Jul 21, 2017·Advanced Science·Wenhua ZuoJinping Liu
Jul 27, 2017·Nature Communications·Shaohua GuoHaoshen Zhou
Sep 25, 2017·Advanced Materials·Huanwen WangHong Jin Fan

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Citations

May 28, 2019·Nanomaterials·Dae-Yeong KimJun Kang
Jan 8, 2020·ACS Applied Materials & Interfaces·Wenliang FengVinodkumar Etacheri
Sep 10, 2019·ACS Applied Materials & Interfaces·Meng TianGuozhong Cao

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Methods Mentioned

BETA
X-ray
scanning
transmission electron microscopy

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