Design and synthesis of a novel 3D hierarchical mesocarbon microbead as anodes for lithium ion batteries and sodium ion batteries |
| |
| Authors: | Doudou Zhao Qiang Ru Xianhua Hou |
| |
| Affiliation: | 1.Guangdong Engineering Technology Research Center of Efficient Green Energy and Environmental Protection Materials,Guangzhou,People’s Republic of China;2.School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou,People’s Republic of China;3.Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou,People’s Republic of China;4.Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education),Guangzhou,People’s Republic of China |
| |
| Abstract: | This work presents a feasible route for the facile synthesis of three-dimensional (3D) hierarchical mesocarbon microbead (MCMB) as anodes for lithium ion batteries (LIBs) and sodium ion batteries (SIBs). The MCMB is oxidized by modified hummers method, and then the precursor is treated by hydrogen reduction to form the HMCMB. The HMCMB with graphene-like architecture has high specific surface, sufficient pore volume, and increased interlayer spacing, which can provide more active insertion/extraction sites and reduce the Li+/Na+ diffusion resistance. When employed as anode materials for LIBs and SIBs, HMCMB anodes exhibit improved lithium and sodium storage capability. The HMCMB delivers a higher reversible capacity (471.1 and 177.5 mAh g?1 at 100 mA g?1 after 100 cycles) and a good rate performance (250 and 121 mAh g?1 even at 1000 mA g?1) for LIBs and SIBs, respectively. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
