Deeksha Nagpal, Anup Singh, Ajay Vasishth, Manju Devi, Ved P Nayyar, Bhagwat P Maurya, Ashok Kumar
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引用次数: 0
摘要
本文报道了柠檬酸和乙二醇辅助水热法在400℃低温煅烧下合成的BiNi 0.6 Mn 0.4 O 3纳米结构的电化学行为。拉曼光谱和Rietveld细化证实BiNi 0.6 Mn 0.4 O 3在四方相中结晶，具有p4′2′1 c空间群对称性。x射线光电子能谱分析表明，在(+2)和(+4)氧化态中分别存在“B”阳离子、Ni和Mn, CV曲线显示它们是法拉第反应的主要成因。在6 M KOH水溶液中，当电流密度为1 A g−1时，BiNi 0.6 Mn 0.4 o3电极的比电容为~ 243 F g−1。在6 a g−1的电流密度下，经过4000次充放电循环后，纳米结构电极的循环稳定性为~ 70%。
Low temperature synthesis of BiNi0.6Mn0.4O3 nanostructures via citric acid and ethylene glycol assisted hydrothermal process for energy storage applications
Abstract Present study reports the electrochemical behavior of BiNi 0.6 Mn 0.4 O 3 nanostructures synthesized via citric acid and ethylene glycol assisted hydrothermal process at low temperature calcination of 400 o C. Raman spectroscopy and Rietveld refinement have confirmed BiNi 0.6 Mn 0.4 O 3 to crystallize in tetragonal phase with P4̅ 2 1 c space group symmetry. X-ray photoelectron spectroscopic analysis showed the presence of ‘B’ cations, Ni and Mn in (+2) and (+4) oxidation states, respectively, which mainly contributed to faradaic reactions as observed in CV curves. The specific capacitance of BiNi 0.6 Mn 0.4 O 3 electrodes has been found to be ∼243 F g −1 at the current density of 1 A g −1 in a 6 M KOH aqueous solution. The nanostructured electrodes showed a cyclic stability of ∼70% after 4000 charge–discharge cycles at the current density of 6 A g −1 .
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