Doping Ni: an effective strategy enhancing electrochemical performance of MnCO_lus-plus">3 electrode materials for supercapacitors

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• 作者：Chunchen Zhang ; Chunli Guo ; Taotao Li ; Xiaochuan Ren…
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：52
• 期：3
• 页码：1477-1485
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

Ni-doped MnCO₃ microspheres were successfully synthesized via a one-step mixed solvent-thermal method. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and N₂ adsorption–desorption measurements. The fabricated Ni-doped MnCO₃ microspheres exhibited a higher specific capacity (538 F g−1 at a current density of 1 A g−1) than pure MnCO₃ (287 F g−1). In addition, 85.8 % of initial capacity was retained after 3000 cycles at a current density of 5 A g−1, demonstrating a good cycling performance. These results suggested that Ni-doped MnCO₃ microspheres material was a promising candidate for high energy storage applications. Hence doping heterogeneous element with good electrical conductivity was an effective approach to improve the electrochemical performance of the electrode materials.