期刊
CHEMICAL ENGINEERING JOURNAL
卷 434, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.134639
关键词
Graphene oxide; Graphene functionalization; Fluorinated grapheme; Hydrolysis; Organocatalysis
资金
- National Natural Science Foundation of China [21504080]
- Natural Sci-ence Foundation of Zhejiang Province [LQ15B040003]
- Fundamental Research Funds of Zhejiang Sci-Tech University [2020Q040]
By using a non-oxidation synthetic strategy, we have successfully prepared a new type of graphene oxide with lower structural defects and excellent electrical properties. This graphene oxide exhibits superior performance in supercapacitors and lithium-ion batteries. It also offers great reactivity for post-functionalization.
Graphene oxide was universally acknowledged to be a very important precursor to prepare graphene or the relative derivatives, but it was criticized sharply due to its quite inferior electrical properties and many structural defects arising out of strong oxidation process. Non-oxidation synthetic strategy of graphene oxide was expected a good solution to mitigate the disadvantages. Inspired by this concept, we attained a totally new, well-defined graphene oxide, that is, G(C-4)-OH, in which hydroxyl was the unique oxygen-containing group and the hexagonal honeycomb carbon lattice was less-defective, by successfully challenging the hydrolysis of ultra-inert, commercially-available graphite fluoride feedstock. An advantaged structure made G(C-4)-OH greatly outperforming traditional graphene oxide both in fundamental electrical properties, such as conductivity, carrier mobility, and in electrochemical performances when applied in supercapacitors and lithium-ion batteries. As convenient as traditional graphene oxide, G(C-4)-OH was pretty reactive to versatile electrophiles and allowed tremendous post-functionalization opportunities to customize graphene functions and orientate its applications.
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