Binder-free porous core-shell structured Ni/NiO configuration for application of high performance lithium ion batteries

作者：Li Xifei; Dhanabalan Abirami; Bechtold Kevin; Wang Chunlei^*

来源：Electrochemistry Communications, 2010, 12(9): 1222-1225.

DOI：10.1016/j.elecom.2010.06.024

• Core-shell
• Ni/NiO
• Anode
• Lithium ion batteries
• Conversion reaction

An interwoven core-shell structured Ni/NiO anode for lithium ion batteries was created by a simple oxidation of Ni foam. As-prepared configuration has a high specific discharge capacity of 701 mAh g(-1) at the 2nd cycle. Its electrochemical performance at subsequent cycles shows good energy capacity of 646 mAh g(-1) at the 65th cycle as well as good rate capability. The porous core-shell structure not only buffers the volume change during cycling but also effectively increases the contact among anode, current collector and electrolyte. The small contact resistance between NiO and Ni facilitates enhanced intrinsic kinetics from conversion reaction.

• 出版日期2010-9