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阐明Sr₂Ni₂O₅/rGO复合物的高效超容量反应作为超级电容器中的电极材料

Farooq Ahmad^1,2, Muhammad Ahmed Khan¹, Umer Waqas¹

¹Centre of Excellence in Solid State Physics, University of the Punjab Lahore Pakistan satiq.cssp@pu.edu.pk.

|August 25, 2023

概括

新的 Sr2Ni2O5/rGO 复合材料在储能方面表现出极好的电化学性能. Sr2Ni2O5@15%rGO复合材料具有高容量和稳定性,使其成为一个有前途的电极材料.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

混合过渡金属氧化物以其在电化学应用中的稳定性和电容性而闻名.
开发先进的电极材料对于提高储能器件性能至关重要.

研究的目的:

合成Sr2Ni2O5/rGO复合材料,用于高效的电化学能量储存.
评估合成材料的结构,形态和电化学特性.

主要方法:

用于制造Sr2Ni2O5/rGO复合材料的溶热合成方法.
射线衍射 (XRD) 和场辐射扫描电子显微镜 (FESEM) 用于结构和形态的表征.
循环电压测量 (CV) 和电化学阻抗光谱 (EIS) 用于电化学性能评估.

主要成果:

XRD证实了结晶样品中形成的正方形到六角形的阶段演变.
FESEM揭示了具有均分布的颗粒的多孔结构.
这种Sr2Ni2O5@15%rGO复合物在0.005Vs-1下表现出高特异电容148.09Fg-1,在1万次循环后保持68.5%.
复合材料的能量密度为4.375 Wh kg-1 (初始) 和功率密度为1.25 W kg-1.

结论:

Sr2Ni2O5@15%rGO复合材料具有卓越的电化学性能,包括高容量和出色的循环稳定性.
该材料的低电荷转移阻力,如尼奎斯特图所示,进一步支持其潜力.
这种复合材料是电化学储能应用中先进电极材料的有希望的候选材料.

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