Park, Hae Woong Na, Byung-Ki Cho, Byung Won Park, Sun-Min Roh, Kwang Chul 2024-01-20T11:32:20Z 2024-01-20T11:32:20Z 2021-08-31 2013-10 1463-9076 https://pubs.kist.re.kr/handle/201004/127650 In this study, V-doped NiO materials were prepared by simple coprecipitation and thermal decomposition, and the effect of the vanadium content on the morphology, structural properties, electrochemical behavior, and cycling stability of NiO upon oxidation and reduction was analyzed for supercapacitor applications. The results show an improvement in the capacitive characteristics of the V-doped NiO, including increases in the specific capacitance after the addition of just 1.0, 2.0, and 4.0 at% V. All VxNi1-xO electrodes (x = 0.01, 0.02, 0.04) exhibited higher specific capacitances of 371.2, 365.7, and 386.2 F g(-1) than that of pure NiO (303.2 F g(-1)) at a current density of 2 A g(-1) after 500 cycles, respectively. The V0.01Ni0.99O electrode showed good capacitance retention of 73.5% at a current density of 2 A g(-1) for more than 500 cycles in a cycling test. Importantly, the rate capability of the V0.01Ni0.99O electrode was maintained at about 84.7% as discharge current density was increased from 0.5 A g(-1) to 4 A g(-1). English ROYAL SOC CHEMISTRY ELECTRODE MATERIAL NANOWIRE ARRAYS MANGANESE OXIDE NIO BEHAVIOR CAPACITORS MORPHOLOGY CATALYSTS CHLORIDE SCIENCE Influence of vanadium doping on the electrochemical performance of nickel oxide in supercapacitors Article 10.1039/c3cp52498a 1 PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.15, no.40, pp.17626 - 17635 PHYSICAL CHEMISTRY CHEMICAL PHYSICS 15 40 17626 17635 scie scopus 000325398500068 2-s2.0-84886899111 Chemistry, Physical Physics, Atomic, Molecular & Chemical Chemistry Physics Article ELECTRODE MATERIAL NANOWIRE ARRAYS MANGANESE OXIDE NIO BEHAVIOR CAPACITORS MORPHOLOGY CATALYSTS CHLORIDE SCIENCE supercapacitor nickel oxide electrochemical behavior cycling stability V0.01Ni0.99O electrode