Ultrahigh-Energy-Density Microbatteries Enabled by New Electrode Architecture and Micropackaging Design

Monolithic cathodes of optimized porosity prepared by sintering LiCoO2 powders provide high volume utilization and surprising stability under electrochemical cycling. Combined with a novel packaging approach, ultrahigh energy densities in small volumes are enabled. The microbatteries have volumes <6 mm(3) and provide sustained similar to 2.5 h discharges with energy densities of 400-650 W h L-1.