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author:

Liu, Shaofang (Liu, Shaofang.) [1] | Luo, Cong (Luo, Cong.) [2] | Ye, Lingting (Ye, Lingting.) [3] | Xie, Kui (Xie, Kui.) [4]

Indexed by:

EI Scopus SCIE

Abstract:

Manganese oxides have high theoretical capacity and abundant reserves, which are considered commercially promising electrode materials for supercapacitors. However, its poor conductivity and low specific surface area severely limit the improvement of energy storage capacity. In this research, we fabricate porous single-crystalline (PSC) MnOx (MnO, MnO2, Mn2O3, and Mn3O4) from MnCO3 single crystal by a lattice reconstruction strategy. The large specific surface area of the porous structure and the long-range ordered lattice characteristics of single crystals, combined with the active sites of unsaturated oxygen coordination, significantly improve energy storage performance and durability. The PSC MnOx with rich oxygen vacancies (OVs) exhibit excellent pseudocapacitance since the local electric field induced by the unbalanced distribution of charges around the OVs increases the migration rate of Na+ in the electrolyte. Electrochemical studies show that the pseudocapacitance of the PSC MnOx materials is enhanced and exhibits excellent cyclic stability. This work opens a new way to improve the pseudocapacitance performance of manganese oxides and provides a reference for the research of transition metal oxides energy storage.

Keyword:

Manganese oxides Oxygen vacancy Single crystal Supercapacitors

Community:

  • [ 1 ] [Liu, Shaofang]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Xie, Kui]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Liu, Shaofang]Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Fujian, Peoples R China
  • [ 4 ] [Luo, Cong]Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Fujian, Peoples R China
  • [ 5 ] [Ye, Lingting]Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Xie, Kui]Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Fujian, Peoples R China
  • [ 7 ] [Liu, Shaofang]Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
  • [ 8 ] [Luo, Cong]Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
  • [ 9 ] [Ye, Lingting]Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China
  • [ 10 ] [Xie, Kui]Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China

Reprint 's Address:

  • 谢奎

    [Ye, Lingting]Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Fujian, Peoples R China;;[Xie, Kui]Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Fujian, Peoples R China;;[Ye, Lingting]Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China;;[Xie, Kui]Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China

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Source :

JOURNAL OF ENERGY STORAGE

ISSN: 2352-152X

Year: 2024

Volume: 84

8 . 9 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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