Electrochemical characteristics of ZnSe and its nanostructured composite for rechargeable Li-ion batteries

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• 作者：Hyuk-Tae Kwon ; Cheol-Min Park
• 关键词：Lithium batteries ; Anode materials ; Nanostructured composite ; Zinc selenide
• 刊名：Journal of Power Sources
• 出版年：1 April, 2014
• 年：2014
• 卷：251
• 期：Complete
• 页码：319-324
• 全文大小：2034 K

文摘

Zinc selenide (ZnSe; mineral name: stilleite) and its nanostructured composite (ZnSe/C) are prepared by simple solid-state synthetic routes, and their potential as electrode materials for rechargeable Li-ion batteries is investigated. The reaction mechanism between ZnSe and Li is demonstrated using ex situ X-ray diffraction and extended X-ray absorption fine structure analyses. The X-ray diffraction patterns and high-resolution transmission electron microscopy observations confirm that ZnSe nanocrystallites in ZnSe/C are uniformly distributed within an amorphous carbon matrix. The nanostructured ZnSe/C composite electrode exhibit excellent electrochemical performances such as a high capacity and long cycling behavior of ca. 705聽mAh聽g^鈭? over 300 cycles.