A: 3D scaffold of the microbattery machined in a silicon substrate to form double microtubes. B: schematic of a 3D Li-ion microbattery showing the stacking of materials deposited in thin layers using ALD. C: Transmission electron microscopy analysis of thin film coatings
In the race towards miniaturization, a French-US team has succeeded in improving the energy density of a rechargeable battery without increasing its size (limited to a few square millimeters in mobile sensors). This feat was achieved by developing a 3D structure made of microtubes, the first step towards producing a complete microbattery. The first experiments have demonstrated the excellent conductivity of the battery’s solid electrolyte/.
In the era of connected devices, intelligent connected microsensors require miniatu...
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