Scalable fabrication of printed Zn//MnO2 planar micro-batteries with high volumetric energy density and exceptional safety
Scalable fabrication of printed Zn//MnO2 planar micro-batteries with high volumetric energy density and exceptional safety作者机构：Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Department of Chemical Physics University of Science and Technology of China State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences
出 版 物：《National Science Review》 (国家科学评论(英文版))
年 卷 期：2020年第7卷第1期
页 面：64-72页
核心收录：
基 金：supported by the National Natural Science Foundation of China(51572259,51872283 and 21805273) National Key R&D Program of China(2016YFB0100100and 2016YFA0200200) Liaoning Revitalization Talents Program(XLYC1807153) Natural Science Foundation of Liaoning Province(20180510038) Dalian Institute of Chemical Physics(DICP)(DICP ZZBS201708 and DICP ZZBS201802) Dalian National Laboratory For Clean Energy(DNL) Chinese Academy of Sciences(CAS) DICP&Qingdao Institute of Bio Energy and Bioprocess Technology(QIBEBT)(DICP&QIBEBT UN201702) DNL Cooperation Fund,CAS(DNL180310,DNL180308) Exploratory Research Program of Shaanxi Yanchang Petroleum(Group)Co.,Ltd and DICP
主 题：low cost printed planar Zn//MnO2 micro-batteries metal-free current collectors
摘 要：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//MnOMBs, with outstanding performance, aesthetic diversity, flexibility and modularization, is demonstrated, based on interdigital patterns of Zn ink as anode and MnOink 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//MnOMBs, 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//MnOMBs present long-term cyclability having a high capacity retention of 83.9% after 1300 cycles at 5 C, which is superior to stacked Zn//MnObatteries previously reported. Also, Zn//MnOplanar 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//MnOMBs 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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