Authors
Wanwan Hong, Yu Zhang, Li Yang, Ye Tian, Peng Ge, Jiugang Hu, Weifeng Wei, Guoqiang Zou, Hongshuai Hou, Xiaobo Ji
Publication date
2019/11/1
Journal
Nano Energy
Volume
65
Pages
104038
Publisher
Elsevier
Description
Carbonaceous materials are promising anode materials for alkali-metal ion batteries due to the abundant resource and high safety, while it is challenged by its low specific capacity and depressed rate capability in potassium-ion batteries (PIBs). To further explore the potassium storage properties of carbon materials and exploit high-performance carbon anode for PIBs, in this work, hollow nanostructured N-doped carbon (p-HNCs) is elaborately designed through the tailoring of carbon quantum dots (CQDs) for the first time. The detailed formation mechanism of hollow nanostructure is investigated and it is demonstrated that CQD micelles formed through hydrophobicity and lipophilicity are served not only as templates for the construction of hollow structure but also pore-forming agent for the generation of rich micro-tunnels, due to the decomposition and contraction of CQDs with releasing gases during the pyrolysis …
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