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has been cited by the following article:

• TITLE: Capacitive Properties of Mesoporous Mn-Co Oxide Derived from a Mixed Oxalate

  AUTHORS: Yong Yan, Bingcai Wu, Cuihong Zheng, Daolai Fang

  KEYWORDS: Supercapacitors; Manganese Oxide; Solid-State Reaction; Cyclic Voltammetry; Capacitive Performance

  JOURNAL NAME: Materials Sciences and Applications, Vol.3 No.6, June 19, 2012

  ABSTRACT: A mesoporous Mn-Co oxide for supercapacitors was derived from a mixed oxalate Mn0.8Co0.2C2O4·nH2O, which was synthesized by a solid-state coordination reaction at room temperature. The synthesized mixed Mn-Co oxalate was decomposed in air at 250°C, resulting in a tetragonal spinel Mn-Co oxide with a primary particle size less than 100 nm. The obtained Mn-Co oxide presents a mesoporous texture with a specific surface area of 120 m2·g﹣1. Electrochemical properties of the Mn-Co oxide electrode were investigated by cyclic voltammetry and galvanostatic charge/discharge in 6 mol·L﹣1 KOH electrolyte. The Mn-Co oxide electrode delivered specific capacitances of 383 and 225 F·g﹣1 at scan rates of 2 and 50 mV·s﹣1, respectively. Subjected to 500 cycles at a current density of 1.34 A·g﹣1, the symmetrical Mn-Co oxide capacitor showed specific capacitance of 179 F·g﹣1, still retaining ~85% of its initial capacitance. The obtained Mn-Co oxide material showed good capacitive performance, which was promising for supercapacitor applications.