材料科学
纳米颗粒
电化学
锰
锌
电流密度
水溶液
化学工程
退火(玻璃)
阴极
透射电子显微镜
电池(电)
碳纤维
电极
纳米技术
马来酸
无机化学
复合数
冶金
复合材料
化学
有机化学
共聚物
功率(物理)
物理化学
聚合物
工程类
物理
量子力学
作者
Saiful Islam,Muhammad Hilmy Alfaruqi,Jinju Song,Sung‐Jin Kim,Duong Tung Pham,Jeonggeun Jo,Seokhun Kim,Vinod Mathew,Joseph Paul Baboo,Zhiliang Xiu,Jaekook Kim
标识
DOI:10.1016/j.jechem.2017.04.002
摘要
In this study, we report the cost-effective and simple synthesis of carbon-coated α-MnO2 nanoparticles (α-MnO2@C) for use as cathodes of aqueous zinc-ion batteries (ZIBs) for the first time. α-MnO2@C was prepared via a gel formation, using maleic acid (C4H4O4) as the carbon source, followed by annealing at low temperature of 270 °C. A uniform carbon network among the α-MnO2 nanoparticles was observed by transmission electron microscopy. When tested in a zinc cell, the α-MnO2@C exhibited a high initial discharge capacity of 272 mAh/g under 66 mA/g current density compared to 213 mAh/g, at the same current density, displayed by the pristine sample. Further, α-MnO2@C demonstrated superior cycleability compared to the pristine samples. This study may pave the way for the utilizing carbon-coated MnO2 electrodes for aqueous ZIB applications and thereby contribute to realizing high performance eco-friendly batteries.
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