High-power lithium ion microbatteries frominterdigitated three-dimensional bicontinuousnanoporous electrodes

摘要

High-performance miniature power sources could enable new microelectronic systems. Herewe report lithium ion microbatteries having power densities up to 7.4mWcm2 mm1,which equals or exceeds that of the best supercapacitors, and which is 2,000 times higherthan that of other microbatteries. Our key insight is that the battery microarchitecture canconcurrently optimize ion and electron transport for high-power delivery, realized here as athree-dimensional bicontinuous interdigitated microelectrodes. The battery microarchitectureaffords trade-offs between power and energy density that result in a high-performance powersource, and which is scalable to larger areas.