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author:

Zhao, Kun (Zhao, Kun.) [1] | Wang, Hongtao (Wang, Hongtao.) [2] | Shao, Yanqun (Shao, Yanqun.) [3] (Scholars:邵艳群) | Yang, Zhiguang (Yang, Zhiguang.) [4] | Chen, Zhe (Chen, Zhe.) [5] | Chen, Kongfa (Chen, Kongfa.) [6] (Scholars:陈孔发) | Chen, Yunxiang (Chen, Yunxiang.) [7] | Lin, Deyuan (Lin, Deyuan.) [8]

Indexed by:

EI Scopus SCIE

Abstract:

Phosphates are a kind of promising electrode materials because they can provide numerous cavities and several reaction sites to be favored for storing anions and cations. However, the widespread application of phosphates are limited by their intrinsically low electronic conductivity. RuO 2 /hydrated RuO 2 exhibits high conductivity and excellent electrochemical properties. Reducing its dosage and increasing its specific surface area are the research concerns. Combining less RuO 2 to Nickel phosphate (NiP) is expected to improve the electrochemical performance. RuO 2 -modified NiP (NiP-RuO 2 ) electrode material is synthesized by a one-step hydrothermal reaction and its structural morphology and capacitive properties are investigated. The results indicate that NiPRuO 2 electrode consists of hydrated RuO 2 and Ni 11 (HPO 3 ) 8 (OH) 6 , and exhibits excellent battery -type electrochemical supercapacitor performance with a specific capacity of 878.06 C/g at 1 A/g. According to density functional theory (DFT) analysis, Ru-doped Ni 11 (HPO 3 ) 8 (OH) 6 has a narrower forbidden band width and higher conductivity than Ni 11 (HPO 3 ) 8 (OH) 6 . Furthermore, the asymmetric supercapacitor (ASC) assembled by NiPRuO 2 /NF and activated carbon (AC) electrode achieves a high energy density (43.58 Wh/kg) at a power density of 923.47 W/kg. When two ASC devices are connected in series, ten light -emitting diodes (LEDs) can be illuminated for ten minutes.

Keyword:

Asymmetric supercapacitors DFT HydratedRuO2 Ni11(HPO3)8(OH)6

Community:

  • [ 1 ] [Zhao, Kun]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Wang, Hongtao]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Shao, Yanqun]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 4 ] [Yang, Zhiguang]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 5 ] [Chen, Zhe]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Chen, Kongfa]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 7 ] [Shao, Yanqun]Fuzhou Univ, Coll Zhicheng, Fuzhou 350002, Fujian, Peoples R China
  • [ 8 ] [Chen, Yunxiang]State Grid Fujian Elect Power Co Ltd, Elect Power Res Inst, Fuzhou 350007, Fujian, Peoples R China
  • [ 9 ] [Lin, Deyuan]State Grid Fujian Elect Power Co Ltd, Elect Power Res Inst, Fuzhou 350007, Fujian, Peoples R China

Reprint 's Address:

  • 邵艳群

    [Shao, Yanqun]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China;;[Shao, Yanqun]Fuzhou Univ, Coll Zhicheng, Fuzhou 350002, Fujian, Peoples R China;;[Chen, Yunxiang]State Grid Fujian Elect Power Co Ltd, Elect Power Res Inst, Fuzhou 350007, Fujian, Peoples R China

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Source :

ELECTROCHIMICA ACTA

ISSN: 0013-4686

Year: 2024

Volume: 488

5 . 5 0 0

JCR@2023

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: 1

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