Sub-10-nm Graphene Nanoribbons with Tunable Surface Functionalities for Lithium-ion Batteries
作者： Yan-Sheng Li , Xiang Ao , Jia-Liang Liao , Jianjun Jiang , Chundong Wang
DOI: 10.1016/J.ELECTACTA.2017.07.183
关键词:
摘要: Abstract A systematic study to reveal the relationship between surface oxygen-containing functionalities of sub-10-nm GNRs and their electrochemical properties for lithium-ion batteries has been presented. Sub-10-nm with controlled groups were synthesized by a green scalable intercalation-assisted unzipping SWCNTs. Detailed materials characterizations including TEM, XRD, Raman XPS indicate that KNO 3 could be an effective intercalation agent facilitate SWCNT reducing strong Van der Waals force attraction bundled SWCNT. The levels GNR tuned carefully controlling KMnO 4 concentration during process. analysis suggests as-produced 31.4 atomic percent (atom %) functional showed highest capacity 490.4 mAh g −1 after 100 cycles. This work proposed appropriate oxygen-functional can promising electrode material high performance batteries.
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