期刊
ENERGY STORAGE MATERIALS
卷 17, 期 -, 页码 151-156出版社
ELSEVIER
DOI: 10.1016/j.ensm.2018.11.017
关键词
Volumetric capacity; Areal capacity; Structured anode; Lithium ion battery; Electroplating
资金
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering through the Materials Research Laboratory at the University of Illinois at Urbana-Champaign [DE-FG02-07ER46471]
3D structured porous electrodes have been considered as a possible solution for accommodating the volume change of alloying lithium ion battery anode materials during cycling. However, lab-scale porous electrodes tend to be thin, and the loading of the activity materials is also small, the combination of which results in electrodes with impractically low areal and volumetric capacities. Here, we develop a high areal and volumetric capacity 3D-structured Sn/C anode by using a two steps electroplating process. An electrode with a 20% v/v Sn loading exhibits a high volumetric/areal capacity of similar to 879 mA h/cm(3)/6.59 mA h/cm(2) after 100 cycles at 0.5 C and a good rate performance of about 750 mA h/cm(3) and 5.5 mA h/cm(2) (delithiation) at 10 C in a half-cell configuration. The 3D Sn/C anode also shows good compatibility with a commercial LCO cathode in a full cell configuration.
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