期刊
IONICS
卷 25, 期 12, 页码 5759-5767出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-019-03130-1
关键词
Lithium-ion batteries; Anode; Ni-NiO; C composite; Electrical conductivity; Electrochemical polarization
A novel Ni-NiO embedded amorphous carbon (Ni-NiO/C) composite was synthesized by simple carbothermal reduction followed by low-temperature oxidation. Benefiting from the embedded metallic nickel, the Ni-NiO/C composite showed improved electrical conductivity and reduced electrochemical polarization when used as anode material of lithium-ion batteries. The Ni-NiO/C electrode can be reversibly discharged and charged for more than 1000 cycles at a high current density of 5 A g(-1), maintaining a discharge/charge capacity of ~ 335.9/335.8 mAh g(-1). When the current density returns from 5 to 0.25 A g(-1), the composite still exhibits a high reversible capacity of 751.9/747.6 mAh g(-1) at the 120th cycle. This work provides guidance to understand the impact of metallic particles on lithium storage.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据