期刊
NATIONAL SCIENCE REVIEW
卷 7, 期 1, 页码 64-72出版社
OXFORD UNIV PRESS
DOI: 10.1093/nsr/nwz070
关键词
low cost; printed; planar; Zn//MnO2 micro-batteries; metal-free current collectors
资金
- National Natural Science Foundation of China [51572259, 51872283, 21805273]
- National Key R&D Program of China [2016YFB0100100, 2016YFA0200200]
- Liaoning Revitalization Talents Program [XLYC1807153]
- Natural Science Foundation of Liaoning Province [20180510038]
- Dalian Institute of Chemical Physics (DICP) [DICP ZZBS201708, DICP ZZBS201802]
- Dalian National Laboratory For Clean Energy (DNL), Chinese Academy of Sciences (CAS)
- DICP & Qingdao Institute of BioEnergy and Bioprocess Technology (QIBEBT) [DICPQIBEBT UN201702]
- DNL Cooperation Fund, CAS [DNL180310, DNL180308]
- Exploratory Research Program of Shaanxi Yanchang Petroleum (Group) Co., Ltd
- DICP
The rapid development of printed and microscale electronics imminently requires compatible micro-batteries (MBs) with high performance, applicable scalability, and exceptional safety, but faces great challenges from the ever-reported stacked geometry. Herein the first printed planar prototype of aqueous-based, high-safety Zn//MnO2 MBs, with outstanding performance, aesthetic diversity, flexibility and modularization, is demonstrated, based on interdigital patterns of Zn ink as anode and MnO2 ink as cathode, with high-conducting graphene ink as a metal-free current collector, fabricated by an industrially scalable screen-printing technique. The planar separator-free Zn//MnO2 MBs, tested in neutral aqueous electrolyte, deliver a high volumetric capacity of 19.3 mAh/cm(3) (corresponding to 393 mAh/g) at 7.5 mA/cm(3), and notable volumetric energy density of 17.3 mWh/cm(3), outperforming lithium thin-film batteries (<= 10 mWh/cm(3)). Furthermore, our Zn//MnO2 MBs present long-term cyclability having a high capacity retention of 83.9% after 1300 cycles at 5 degrees C, which is superior to stacked Zn//MnO2 batteries previously reported. Also, Zn//MnO2 planar MBs exhibit exceptional flexibility without observable capacity decay under serious deformation, and remarkably serial and parallel integration of constructing bipolar cells with high voltage and capacity output. Therefore, low-cost, environmentally benign Zn//MnO2 MBs with in-plane geometry possess huge potential as high-energy, safe, scalable and flexible microscale power sources for direction integration with printed electronics.
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