期刊
CHEMELECTROCHEM
卷 1, 期 12, 页码 2131-2137出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201402234
关键词
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资金
- Center of Excellence Low Carbon Technologies (CO NOT), Slovenia
- Center of Excellence Advanced Materials and Technologies for the Future (CO NAMASTE), Slovenia
Redox-active organic materials offer high theoretical capacities; however, most organic materials show drastic capacity fading during cycling, mainly caused by the dissolution of the active materials in the electrolytes used in Li-ion batteries. In this work, we introduced graphene nanoribbons (GNRs) with grafted electroactive molecules to serve as a current collector, binder, and active material at the same time. GNRs were prepared by unzipping commercially available multi-walled carbon nanotubes with a Na/K alloy, functionalizing them in situ with different protected hydroquinone derivatives, which were later deprotected in the last step. All synthesized materials were electrochemically characterized in Li-ion battery cells. The physical characteristics of the synthesized materials were determined by using evolved-gas analysis, Raman spectroscopy, and scanning electron microscopy. These analyses show the successful functionalization of GNRs and improved electrochemical performance compared to non-functionalized GNRs.
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