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author:

Zhou, X. (Zhou, X..) [1] | Lu, Y. (Lu, Y..) [2] | Zhen, Y. (Zhen, Y..) [3] | Wang, Z. (Wang, Z..) [4] | Zheng, X. (Zheng, X..) [5] | Wei, M. (Wei, M..) [6] | Hong, Z. (Hong, Z..) [7]

Indexed by:

Scopus

Abstract:

Hybrid capacitor has attracted great interest owing to the higher energy density compared with traditional double-layer capacitor. However, the fabrication of high-performance hybrid aqueous capacitor based on low-cost and multivalent ion storage remains challenging. In this work, highly porous TiO2 microrods (P-TiO2-MRs) with uniform and large pore size are prepared extensively with a simple hydrothermal synthesis. Such micro/nano-structured anode exhibit remarkably enhanced Al ion intercalation/deintercalation performance in optimized AlCl3 aqueous electrolyte. The electrode has large discharge capacity with 111.1 mAh g−1 @ 1 A g−1 and superior rate capability with 49.8 mAh g−1 @ 5 A g−1. For the first time, a novel hybrid device is fabricated through assembling insertion-type P-TiO2-MRs anode and absorption-type active carbon (AC) cathode (P-TiO2-MRs//AC) in AlCl3 aqueous electrolyte. The fabricated hybrid capacitor delivers a high energy density of 26.3 Wh kg−1 @ 627.3 W kg−1 as well as an outstanding high power of 5454.5 W kg−1 @ 10.9 Wh kg−1. In addition, it also displays excellent rate capability and superior retention of 63% even after 1000 cycles. © 2020 Elsevier B.V.

Keyword:

Al-ion; Aqueous electrolyte; Hybrid capacitor; TiO2 microrods

Community:

  • [ 1 ] [Zhou, X.]School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 2 ] [Zhou, X.]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian 350117, China
  • [ 3 ] [Lu, Y.]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian 350117, China
  • [ 4 ] [Zhen, Y.]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian 350117, China
  • [ 5 ] [Wang, Z.]School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 6 ] [Zheng, X.]School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 7 ] [Wei, M.]Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, Fuzhou, Fujian 350116, China
  • [ 8 ] [Hong, Z.]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian 350117, China
  • [ 9 ] [Hong, Z.]Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, Cologne, 50939, Germany

Reprint 's Address:

  • [Hong, Z.]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal UniversityChina

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Source :

Journal of Power Sources

ISSN: 0378-7753

Year: 2020

Volume: 453

9 . 1 2 7

JCR@2020

8 . 1 0 0

JCR@2023

ESI HC Threshold:196

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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