假电容
阳极
纳米复合材料
材料科学
锂(药物)
插层(化学)
石墨
离子
电化学
化学工程
纳米技术
超级电容器
无机化学
化学
复合材料
电极
物理化学
有机化学
医学
工程类
内分泌学
作者
Xiaodong Tian,Li Du,Yurong Yan,Songping Wu
标识
DOI:10.1002/celc.201900324
摘要
Abstract Electrochemical features and the charge‐storage mechanism of monodispersed MnO nanoparticles anchored on graphite (MnO@Graphite) for Li‐ion batteries have been investigated at a low‐temperature of −25 °C. MnO@Graphite nanocomposite rendered a remarkable reversible capacity of 456 mA h g −1 after 320 cycles under a current density of 100 mA g −1 at such a low temperature. Remarkable reversible capacity could be ascribed to the integrated structure, emergence of in‐situ formed MnO 2 and hybrid pseudocapacitance. Hybrid pseudocapacitive contributions have appeared at low operational temperature, i. e., assembled heterogeneous intercalation pseudocapacitance at low potentials and surface‐controlled pseudocapacitance at high potentials. The results showed that the prepared MnO@Graphite nanocomposite is a promising candidate for Li‐ion batteries operated in harsh environment.
科研通智能强力驱动
Strongly Powered by AbleSci AI