Embedded ZnO nanoparticles in N-doped carbon nanoplate arrays grown on N-doped carbon paper as low-cost and lightweight electrodes for high-performance lithium storage
Embedded ZnO nanoparticles in N-doped carbon nanoplate arrays grown on N-doped carbon paper as low-cost and lightweight electrodes for high-performance lithium storage
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将ZnO纳米颗粒嵌入在N掺杂碳纸上生长的N掺杂碳纳米板阵列中，作为高性能锂存储的低成本轻质电极
DOI：
10.1016/j.ceramint.2020.04.082
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发表时间：
2020-08
影响因子：
5.2
通讯作者：
Zhan Hongbing
中科院分区：
文献类型：
--
作者：
Zhu Xueshuang;Cai Daoping;Cui Zhixiang;Wang Qianting;Zhan Hongbing
Traditional slurry-based electrodes consist of heavy current collectors and electroactive materials with a low weight percentage, which inevitably increase the total weight and cost of lithium-ion batteries (LIBs). Consequently, the development of low-cost, lightweight, flexible and binder-free electrodes for LIBs is highly desirable but also greatly challenging. In this work, we report the synthesis of small ZnO nanoparticles uniformly embedded in N-doped carbon (NC) nanoplate arrays (NPAs) tightly grown on a N-doped carbon paper (NCP) substrate (ZnO/NC NPAs@NCP) through a facile metal-organic framework-engaged strategy. This electrode design not only avoids the utilisation of insulating polymer binders but also offers other advantages, including large electrode/electrolyte contact areas, abundant electroactive sites, good wettability of the electrolyte, fast electron/ion transport and efficient volume accommodation. Notably, the freestanding ZnO/NC NPAs@NCP electrode displays a high reversible capacity of 610 mA h g−1(based on the mass of entire electrode) at a current density of 100 mA g−1for 50 cycles and excellent long-term cycling stability (363 mA h g−1at 500 mA g−1for 200 cycles). Furthermore, a full cell employing ZnO/NC NPAs@NCP as the anode and commercial LiFePO4as the cathode is constructed, indicating the feasibility for practical application. Moreover, an analysis of the electrode kinetics confirms the favourable lithium-ion storage kinetics within the ZnO/NC NPAs@NCP electrode. The present work could provide a new approach to develop low-cost, lightweight and flexible electrodes for advanced energy storage.
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