基于铜掺杂MnO_(2)纳米线的水系锌离子电池  

Aqueous Zn Battery Based on Cu-doped MnO_(2)Nanowire Cathode

作　　者：张玉印 邵义[1] ZHANG Yuyin;SHAO Yi(School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,Liaoning,China)

机构地区：[1]沈阳工业大学材料科学与工程学院,辽宁沈阳110870

出　　处：《陶瓷学报》2023年第4期744-750,共7页Journal of Ceramics

摘　　要：可充电锌离子电池以其环境友好、低成本、高安全性等特点备受关注。目前,锰基材料是一种研究较多的水系锌离子正极材料,但其循环稳定性差、电导率差等缺点限制了其进一步发展。以制备铜掺杂的α-MnO_(2)纳米线为正极材料,铜元素的引入使得样品的导电性得到提高,从而提升了样品的容量。组装的Zn/MnO_(2)电池在0.1 A·g^(-1)的电流密度下具有445 mAh·g^(-1)的可逆容量。在1 A·g^(-1)的电流密度下,它们在1000次循环后仍保持着良好的循环稳定性,展示了它们在未来储能装置中的潜在应用。Rechargeable zinc ion batteries have attracted much attention for their characteristics of environmental friendless,low cost and high safety.Recently,the most widely studied cathodes for zinc ion batteries are manganese-based materials.However,their poor cycling stability and low electrical conductivity limit their further development.Copper dopedα-MnO_(2)nanowires are prepared as the cathode materials.With the introduction of copper,the conductivity of the sample is improved,thus leading to an increase in capacity.The assembled Zn/Cu-MnO_(2)batteries deliver a reversible capacity of 445 mAh·g−1 at a current density of 0.1 A·g^(−1).They keep excellent cycling stability after 1000 cycles at a current density of 1 A·g^(−1),demonstrating their potential applications in future energy storage devices.

关 键 词：锌离子电池 二氧化锰 正极 高倍率性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]