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Copper doped cobalt-manganese phosphate ternary composites for high-performance supercapattery devices
Journal of Energy Storage ( IF 9.4 ) Pub Date : 2021-01-22 , DOI: 10.1016/j.est.2021.102307
Muhammad Zahir Iqbal , Junaid Khan , Ayesha Gul , Saman Siddique , Meshal Alzaid , Murtaza Saleem , Muhammad Javaid Iqbal

This work demonstrates the electrochemical performance of binary as well as ternary metal phosphates synthesized via a cost-effective and facile sonochemical approach. The structural elemental and morphological study of the as-synthesized was investigated via XRD, EDX and SEM. The electrochemical performance of synthesized material was investigated in three and two cell configuration. An outstanding performance was delivered via copper doped cobalt manganese phosphate (Co0.125Cu0.375Mn0.50(PO4)2.) which leads to a specific capacity of 498.2 at 3 mV/s and 483 C/g at 0.5 A/g. This electrode material was utilized as positive electrode material in an asymmetric (supercappatery) device. The activated carbon was employed as a negative electrode material. The fabricated device delivers splendid specific energy of 56 Wh/kg with a specific power of 800 W/kg holds an outstanding specific power of 6420 W/kg while still retaining specific energy of 16.88 Wh/kg. Moreover, the device praises excellent capacity retention of 97.2% after 2000 consective GCD cycles. The supercapattery performance was also analyzed via a simulation approach to investigate the contribution of capacitive and diffusion controlled mechanisms. A maximum capacitive and diffusion contribution of 34.2 (at 60 mV/s) and 86.4% (at 3 mV/s) respectively was observed in aggregate device performance. The morphological and compositional properties along with excellent electrochemical performance make Co0.125Cu0.375Mn0.50(PO4)2 a valuable electrode material for the development of advanced energy storage devices.



中文翻译:

高性能超级电池器件用掺杂铜的钴锰磷酸盐三元复合材料

这项工作证明了通过成本有效且简便的声化学方法合成的二元和三元金属磷酸盐的电化学性能。通过XRD,EDX和SEM对合成后的结构元素和形态进行了研究。在三个和两个单元配置中研究了合成材料的电化学性能。通过掺杂铜的钴锰酸钴(Co 0.125 Cu 0.375 Mn 0.50(PO 42提供了出色的性能)导致比容量在3 mV / s下为498.2,在0.5 A / g下为483 C / g。该电极材料被用作非对称(超级电容器)装置中的正电极材料。活性炭用作负极材料。所制造的装置可提供56 Wh / kg的出色比能,而800 W / kg的比功率可保持6420 W / kg的出色比功率,同时仍保持16.88 Wh / kg的比能量。此外,该器件还称赞了2000次连续GCD循环后97.2%的出色容量保持率。还通过仿真方法分析了超级电池性能,以研究电容和扩散控制机制的贡献。最大电容和扩散贡献为34.2(在60 mV / s时)和86。总体器件性能观察到分别为4%(3 mV / s)。形态和组成特性以及出色的电化学性能使钴0.125 Cu 0.375 Mn 0.50(PO 4 2是用于开发先进的能量存储设备的有价值的电极材料。

更新日期:2021-01-22
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