Hydroxide ion dependent α-MnO<sub>2</sub> enhanced <i>via</i> oxygen vacancies as the negative electrode for high-performance supercapacitors
Yucheng Chen, Chengbao Zhou, Gang Liu, Chenxia Kang, Lin Ma, Qiming Liu
Abstract
Oxygen vacancy-enhanced α-MnO<sub>2</sub> has a high specific capacitance of 736.3 F g<sup>−1</sup>. The energy storage process of MnO<sub>2</sub> as the anode is realized by the participation of OH<sup>−</sup> and the mutual conversion of Mn(<sc>ii</sc>), Mn(<sc>iii</sc>) and Mn(<sc>iv</sc>).
Topics & Concepts
HydroxideIonOxygenElectrodeAnodeSupercapacitorMaterials scienceInorganic chemistryCapacitanceVacancy defectAnalytical Chemistry (journal)ChemistryCrystallographyPhysical chemistryOrganic chemistryChromatographySupercapacitor Materials and FabricationAdvanced battery technologies researchElectrocatalysts for Energy Conversion