NS codoped carbon nanorods as anode materials for high-performance lithium and sodium ion batteries

• 来源期刊: 能源化学
• 年，卷（期）: 2018,（1）
• 页码范围: 203-208
• 页数: 6页
• 语种: 英文

摘要

NS codoped carbon nanorods (NS-CNRs) were prepared using crab shell as template and polyphenylene sulfide (PPS) as both the C and S precursor,followed by carbonization in NH3.The as-obtained NS-CNRs had a diameter of ～50 nm,length of several micrometers,and N and S contents of 12.5 at.％ and 3.7 at.％,respectively,which can serve as anodes for both lithium-ion batteries (LIBs) and sodium ion batteries (SIBs).When serving as an anode of LIB,the NS-CNRs delivered gravimetric capacities of 2154 mAh g-1 at current densities of 0.1 A g-1 and 625 mAh g-1 at current densities of 5.0 A g-1 for 1000 cycles.When serving as an anode of SIB,the NS-CNRs delivered gravimetric capacities of 303 mAh g 1 at current densities of 0.1 A g-1 and 230 mAh g-1 at current densities of 1.0 A g-1 for 3000 cycles.The excellent electrochemical performance of NS-CNRs could be ascribed to the one-dimensional nanometer structure and high level of heteroatom doping.We expect that the obtained NS-CNRs would benefit for the future development of the doped carbon materials for lithium ion batteries and other extended applications such as supercapacitor,catalyst and hydrogen storage.