期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 965, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2023.171493
关键词
Lithium-ion battery; Anode material; CoO@N-GC; Porous
A three-dimensional porous N-doped graphite carbon framework embedded with cobalt oxide (CoO@N-GCs) was prepared using a simple polymer heat treatment method. It exhibited outstanding performance as an anode material for lithium-ion batteries (LIBs), with a first capacity of 1628 mAh g- 1 (0.05 A g- 1) and a capacity of 352.72 mAh g- 1 after 1000 cycles at 1 A g- 1. The pyrolysis process preserved the interconnected macroporous structure, with the formation of macropores perpendicular to the surface. The solid-to-hollow transformation of pore walls resulted from the formation of CoO nanoparticles.
A three-dimensional porous N-doped graphite carbon framework embedded with cobalt oxide (CoO@N-GCs) was prepared using a simple polymer heat treatment method. This material is utilized as an anode material for lithium-ion batteries (LIBs). The experimental results demonstrate that the CoO@N-GC-400 shows outstanding performance. The first capacity is 1628 mAh g- 1 (0.05 A g- 1) and exhibits excellent cycle characteristics, maintaining a capacity of 352.72 mAh g- 1 after 1000 cycles at 1 A g- 1. During pyrolysis, the interconnected macroporous structure is mostly preserved, and the formation of the macropores happens perpendicular to the surface. This occurrence is mainly due to the high-temperature carbonization of PVP and the significant pore formation resulting from the breakdown of Co(NO3)3. The pore wall undergoes a solid-to-hollow transformation due to the formation of CoO nanoparticles within the walls. This provides a useful approach for designing the anode structure of high-performance LIBs.
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