Electrochemical Study of Conductive Nanometric Co3O4- Based Electrodes for Asymmetric Supercapacitors in Alkaline Electrolyte | Zendy

Gérôme Godillot | Zendy; PierreLouis Taberna | Zendy; Barbara Daffos | Zendy; Patrice Simon | Zendy; Claude Delmas | Zendy; Liliane GuerlouDemourgues | Zendy

Open Access

Electrochemical Study of Conductive Nanometric Co₃O₄- Based Electrodes for Asymmetric Supercapacitors in Alkaline Electrolyte

Author(s) -

Gérôme Godillot,

PierreLouis Taberna,

Barbara Daffos,

Patrice Simon,

Claude Delmas,

Liliane GuerlouDemourgues

Publication year - 2016

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.0951609jes

Subject(s) - supercapacitor , electrolyte , electrochemistry , materials science , spinel , electrode , electrical conductor , chemical engineering , oxide , cobalt oxide , conductivity , cobalt , nanotechnology , composite material , chemistry , metallurgy , engineering

International audienceLithiated and protonated spinel cobalt oxide, exhibiting high electrical conductivity thanks to the presence of structural defects, could be envisioned for asymmetric supercapacitor applications. Charge storage mechanism was investigated and it is shown that only a thin layer at the material surface was involved (less than 1 nm) during the process, so that only 20% of the total theoretical capacity was achieved. A very good electrochemical stability is found, with less than 30% of the initial capacity (∼70 mA·h·g−1) lost after 3500 cycles

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