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author:

Zhou, Xuechou (Zhou, Xuechou.) [1] | Lu, Yanzhong (Lu, Yanzhong.) [2] | Zhen, Yichao (Zhen, Yichao.) [3] | Wang, Zhengzhang (Wang, Zhengzhang.) [4] | Zheng, Xinyu (Zheng, Xinyu.) [5] | Wei, Mingdeng (Wei, Mingdeng.) [6] (Scholars:魏明灯) | Hong, Zhensheng (Hong, Zhensheng.) [7]

Indexed by:

EI Scopus SCIE

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.

Keyword:

Al-ion Aqueous electrolyte Hybrid capacitor TiO2 microrods

Community:

  • [ 1 ] [Zhou, Xuechou]Fujian Agr & Forestry Univ, Sch Life Sci, Fuzhou 350002, Peoples R China
  • [ 2 ] [Wang, Zhengzhang]Fujian Agr & Forestry Univ, Sch Life Sci, Fuzhou 350002, Peoples R China
  • [ 3 ] [Zheng, Xinyu]Fujian Agr & Forestry Univ, Sch Life Sci, Fuzhou 350002, Peoples R China
  • [ 4 ] [Zhou, Xuechou]Fujian Normal Univ, Coll Phys & Energy, Fujian Prov Key Lab Quantum Manipulat & New Energ, Fuzhou 350117, Fujian, Peoples R China
  • [ 5 ] [Lu, Yanzhong]Fujian Normal Univ, Coll Phys & Energy, Fujian Prov Key Lab Quantum Manipulat & New Energ, Fuzhou 350117, Fujian, Peoples R China
  • [ 6 ] [Zhen, Yichao]Fujian Normal Univ, Coll Phys & Energy, Fujian Prov Key Lab Quantum Manipulat & New Energ, Fuzhou 350117, Fujian, Peoples R China
  • [ 7 ] [Hong, Zhensheng]Fujian Normal Univ, Coll Phys & Energy, Fujian Prov Key Lab Quantum Manipulat & New Energ, Fuzhou 350117, Fujian, Peoples R China
  • [ 8 ] [Wei, Mingdeng]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Ma, Fuzhou 350116, Fujian, Peoples R China
  • [ 9 ] [Hong, Zhensheng]Univ Cologne, Inst Inorgan Chem, Greinstr 6, D-50939 Cologne, Germany

Reprint 's Address:

  • [Hong, Zhensheng]Fujian Normal Univ, Coll Phys & Energy, Fujian Prov Key Lab Quantum Manipulat & New Energ, Fuzhou 350117, Fujian, Peoples R China

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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 Discipline: MATERIALS SCIENCE;

ESI HC Threshold:196

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 12

SCOPUS Cited Count: 15

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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