Original Conductive Nano-Co3O4 Investigated as Electrode Material for Hybrid Supercapacitors | Zendy

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

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Original Conductive Nano-Co3O4 Investigated as Electrode Material for Hybrid Supercapacitors

Author(s) -

Gérôme Godillot,

Liliane GuerlouDemourgues,

PierreLouis Taberna,

Patrice Simon,

Claude Delmas

Publication year - 2011

Publication title -

electrochemical and solid-state letters

Language(s) - English

Resource type - Journals

eISSN - 1944-8775

pISSN - 1099-0062

DOI - 10.1149/1.3609259

Subject(s) - supercapacitor , materials science , dielectric spectroscopy , cyclic voltammetry , cobalt oxide , spinel , cobalt , electrode , carbon black , electrical conductor , electrochemistry , capacitance , chemical engineering , oxide , lithium (medication) , nanotechnology , composite material , chemistry , metallurgy , medicine , natural rubber , engineering , endocrinology

International audienceCobaltoxides have been extensively used as conductive additives for Ni-MHbatteries. We report in this paper the performances of anoriginal nanometric cobalt oxide, close to Co₃O₄, as electrode materialfor hybrid supercapacitors. This spinel type phase contains hydrogen, lithium,cobalt vacancies, and especially Co⁴⁺ ions within the structure, leadingto a high electronic conductivity. Cyclic voltammetry and impedance spectroscopymeasurements show interesting capacitance (320 F/g in 8M-KOH), as wellas good electrochemical cycling with a small amount of carbonblack (5%)

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