Corresponding Author

Guang-lei CUI(cuigl@qibebt.ac.cn)


We first present a new aqueous zinc-ion (Zn-ion) capacitor based on vanadium pentoxide ( V2O5) cathode, activated carbon (AC) anode, and 2 mol·L-1 zinc trifluoromethanesulfonate (Zn(TfO)2) electrolyte. The Zn-ion capacitor possesses a wide electrochemical window of 1.4 V, good rate capability and cycling stability. The XRD data demonstrates that the Zn2+ ion serving as the charge carrier could be reversibly intercalated into the V2O5. This capacitor delivered a power density of 181 W·kg-1 and an energy density of 4.5 Wh·kg-1 at 1000 mA·g-1. This work may open up new opportunities for developing multivalent ion-based electrochemical capacitors.

Graphical Abstract


Supercapacitor, Zn-ion capacitor; V2O5, multivalent ion (de-)intercalation, aqueous electrolyte.

Publication Date


Online Available Date


Revised Date


Received Date



[1] Atwater T B, Cygan P J, Leung F C. Man portable power needs of the 21st century - I. Applications for the dismounted soldier. II. Enhanced capabilities through the use of hybrid power sources[J]. Journal of Power Sources, 2000, 91(1): 27-36.

[2] Lewandowski A, Galinski M. Practical and theoretical limits for electrochemical double-layer capacitors[J]. Journal of Power Sources, 2007, 173(2): 822-828.

[3] Owusu K A, Qu L, Li J, et al. Low-crystalline iron oxide hydroxide nanoparticle anode for high-performance supercapacitors[J]. Nature Communications, 2017, 8: 14264-14274.

[4] Burke A. Ultracapacitor technologies and application in hybrid and electric vehicles[J]. International Journal of Energy Research, 2010, 34(2): 133-151.

[5] Sharma P, Bhatti T S. A review on electrochemical double-layer capacitors[J]. Energy Conversion and Management, 2010, 51(12): 2901-2912.

[6] Hercule K M, Wei Q, Asare O K, et al. Interconnected nanorods-nanoflakes Li2Co2(MoO4)3 framwork structure with enhanced electrochemical properties for supercapacitors[J]. Advanced Energy Materials, 2015, 5(10): 1500060.

[7] Pandolfo A G, Hollenkamp A F. Carbon properties and their role in supercapacitors[J]. Journal of Power Sources, 2006, 157(1): 11-27.

[8] Rudge A, Davey J, Raistrick, I, et al. Conducting polymer as active materials in electrochemical capacitors[J]. Journal of Power Sources, 1994, 47(1/2): 89-107.

[9] Yu L P, Chen G Z. Redox electrode materials for supercapatteries[J]. Journal of Power Sources, 2016, 326: 604-612.

[10] Wang Y G, Xia Y Y. Hybrid aqueous energy storage cells using activated carbon and lithium-intercalated compounds I. The C/LiMn2O4 system[J]. Journal of The Electrochemical Society, 2006, 153(2): A450-A454.

[11] Zhang Y, Yuan C, Ye K, et al. An aqueous capacitor battery hybrid device based on Na-ion insertion-deinsertion in λ-MnO2 positive electrode[J]. Electrochimica Acta, 2014, 148: 237-243.

[12] Park J H, Park O O. Hybrid electrochemical capacitors based on polyaniline and activated carbon electrodes[J]. Journal of Power Sources, 2002, 111(1): 185-190.

[13] Jain A, Aravindan V, Jayaraman S, et al. Activated carbons derived from coconut shells as high energy density cathode material for Li-ion capacitors[J]. Scientific Reports, 2013, 3.

[14] Chen Z, Augustyn V, Wen J, et al. High-Performance Supercapacitors Based on Intertwined CNT/V2O5 Nanowire Nanocomposites[J]. Advanced Materials, 2011, 23(6): 791-795.

[15] Dipan K, Brian D A, Victor D, et al. A high-capacity and long-life aqueous rechargeable zinc battery using a metal oxide intercalation cathode[J]. Nature Energy, 2016, 119.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.