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Cite as Nano-Micro Lett. (2020) 12:183 Received: 31 May 2020 Accepted: 12 August 2020 © The Author(s) 2020

https://doi.org/10.1007/s40820-020-00521-2

Nanohollow Carbon for Rechargeable Batteries: Ongoing Progresses and Challenges Jiangmin Jiang1,2, Guangdi Nie2,3, Ping Nie4, Zhiwei Li1, Zhenghui Pan2, Zongkui Kou2, Hui Dou1, Xiaogang Zhang1 *, John Wang2 *

HIGHLIGHTS • The synthesis strategies of nanohollow carbon materials, including nanospheres, nanopolyhedrons, and nanofibers are summarized. • Nanohollow carbon materials used as electrode materials in several types of rechargeable batteries are reviewed. • The challenges being faced and perspectives of nanohollow carbon materials are discussed.

ABSTRACT  Among the various morphologies of carbon-based materials, hollow carbon nanostructures are of particular interest for energy storage. They have been

of rechargeable batteries. The design and synthesis strategies for them and their electrochemical performance in rechargeable batteries, including lithium-ion batter-

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nanopolyhedrons, and nanofibers, in relation to their applications in the main types

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that are being made with the nanohollow carbon materials, including nanospheres,

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electrochemical performance. In this overview, we look into the ongoing progresses

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and giving rise to high specific capacity, rate capability, cycling ability, and overall

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ing active sites, accelerating electrons/ions transfer, interacting with electrolytes,

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and excellent chemical and mechanical stability, which are beneficial for provid-

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ratios, controllable pores and pore size distribution, high electrical conductivity,

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ies, owing to their high surface areas in association with the high surface-to-volume

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widely investigated as electrode materials in different types of rechargeable batter-

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ies, sodium-ion batteries, potassium-ion batteries, and lithium–sulfur batteries are comprehensively reviewed and discussed, together with the challenges being faced and perspectives for them. KEYWORDS  Hollow carbon nanospheres; Nanopolyhedrons and nanofibers; Template synthesis; Rechargeable batteries; Electrochemical performance

* Xiaogang Zhang, [email protected]; John Wang, [email protected] 1 Jiangsu Key Laboratory of Electrochemical Energy Storage Technology, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People’s Republic of China 2 Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore 3 Industrial Research Institute of Nonwovens and Technical Textiles, College of Textiles and Clothing, Qingdao University, Qingdao 266071, People’s Republic of China 4 Key Laboratory of Preparation and Application of Environmental Friendly Materials, College of Chemistry, Jil