Low temperature synthesis of BiNi_0.6Mn_0.4O₃nanostructures via citric acid and ethylene glycol assisted hydrothermal process for energy storage applications

Nano Express Pub Date : 2023-11-08 DOI:10.1088/2632-959x/ad0661

Deeksha Nagpal, Anup Singh, Ajay Vasishth, Manju Devi, Ved P Nayyar, Bhagwat P Maurya, Ashok Kumar

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Abstract

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 P 4 ̅ 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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柠檬酸和乙二醇辅助水热法低温合成BiNi0.6Mn0.4O3纳米结构及其储能应用

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%。

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来源期刊

Nano Express

CiteScore

6.40

自引率

0.00%

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