Integration of high capacity materials into interdigitated mesostructured electrodes for high energy and high power density primary microbatteries

JOURNAL OF POWER SOURCES

卷:315

Article

Pikul, James H.¹  Liu, Jinyun²  Braun, Paul V.²  King, William P.¹ 

[1] Univ Illinois, Dept Mech Sci & Engn, 1206 West Green St, Urbana, IL 61801 USA

[2] Univ Illinois, Dept Mat Sci & Engn, 1304 West Green St, Urbana, IL 61801 USA

关键词: Microbattery;    Conversion electrode;    Lithium battery;    Lithium deposition;    High power;   

DOI  :  10.1016/j.jpowsour.2016.03.034

来源: Elsevier

【 摘 要 】

Microbatteries are increasingly important for powering electronic systems, however, the volumetric energy density of microbatteries lags behind that of conventional format batteries. This paper reports a primary microbattery with energy density 45.5 mu Wh cm(-2) mu m(-1) and peak power 5300 mu W cm(-2) mu m(-1), enabled by the integration of large volume fractions of high capacity anode and cathode chemistry into porous micro-architectures. The interdigitated battery electrodes consist of a lithium metal anode and a mesoporous manganese oxide cathode. The key enabler of the high energy and power density is the integration of the high capacity manganese oxide conversion chemistry into a mesostructured high power interdigitated bicontinuous cathode architecture and an electrodeposited dense lithium metal anode. The resultant energy density is greater than previously reported three-dimensional micro batteries and is comparable to commercial conventional format lithium-based batteries. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free