Bingjie Cheng, Xiaoqiang Li, Ruqu Han, Jun Xiang, Yamei Zhang
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引用次数: 0
摘要
本文首次成功制备了具有 30.07 m2 g-1 高比表面积和丰富异质界面的 Bi2Fe4O9@Bi25FeO40 异质结构,并将其应用于超级电容器。Bi2Fe4O9@Bi25FeO40 电极具有较高的比容量(1.0 A g-1 时为 550.8 F g-1)和良好的循环稳定性(5.0 A g-1 时循环 3000 次后电容保持率为 75%,库仑效率为 92.3%),明显优于纯 Bi2Fe4O9 或 Bi25FeO40 电极。这项研究提出了一种有效的界面工程策略来提高超级电容器的性能。
Construction of a homologous bimetallic oxide Bi2Fe4O9@Bi25FeO40 heterostructure to boost supercapacitor performance
Herein, a Bi2Fe4O9@Bi25FeO40 heterostructure with a high specific surface area of 30.07 m2 g−1 and abundant heterogeneous interfaces was successfully fabricated and applied to supercapacitors for the first time. The Bi2Fe4O9@Bi25FeO40 electrode exhibits a high specific capacity (550.8 F g−1 at 1.0 A g−1) and good cycling stability (75% capacitance retention and 92.3% coulombic efficiency after 3000 cycles at 5.0 A g−1), significantly outperforming the pure Bi2Fe4O9 or Bi25FeO40 electrode. This work proposes an effective interfacial engineering strategy to enhance supercapacitor performance.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.