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author:

Li, Beibei (Li, Beibei.) [1] | Shao, Yanqun (Shao, Yanqun.) [2] (Scholars:邵艳群) | Zhu, Junqiu (Zhu, Junqiu.) [3] | Tang, Dian (Tang, Dian.) [4] (Scholars:唐电) | Wu, Bo (Wu, Bo.) [5] (Scholars:吴波)

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Abstract:

IrO2-SnO2 coatings with different Sn contents were prepared on titanium substrate by a thermal decomposition method. The relationship between the capacitance properties and microstructure was investigated by means of cyclic voltammetry, constant current discharge measurements and transmission electron microscope (TEM). Results show that the specific capacitance of IrO2-SnO2 coating electrodes increases first and then decreases with the Sn content increasing. The reversibilities and fast charging and discharging behaviors of the electrode materials are improved gradually. The maximal specific capacitance reaches 485.07 F/g when the content of Sn is 70 mol%, 7.5 times larger than that of pure IrO2 electrode. The coating is of amorphous structure, including the nanocrystalline with about 1 nm size and narrow size distribution, which increases the active site area.

Keyword:

Capacitance Coatings Cyclic voltammetry Decomposition Electric discharges Electrodes Iridium compounds Nanocrystals Tin Transmission electron microscopy

Community:

  • [ 1 ] [Li, Beibei]Fuzhou University, Fuzhou 350108, China
  • [ 2 ] [Shao, Yanqun]Fuzhou University, Fuzhou 350108, China
  • [ 3 ] [Zhu, Junqiu]Fuzhou University, Fuzhou 350108, China
  • [ 4 ] [Tang, Dian]Fuzhou University, Fuzhou 350108, China
  • [ 5 ] [Wu, Bo]Fuzhou University, Fuzhou 350108, China

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Source :

Rare Metal Materials and Engineering

ISSN: 1002-185X

CN: 61-1154/TG

Year: 2012

Issue: 11

Volume: 41

Page: 2041-2044

0 . 1 6

JCR@2012

0 . 6 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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