State-of-the-art and new approaches in manufacturing of 3D lithium microbatteries
Dr Stefania Ferrari
Lecturer, Department of Chemistry, XJTLU
The lithium battery (LIB) is a critical enabling technology for mobile electronics and electric vehicles and has been well assessed in the market. Recent advances in micro- and nano-electromechanical systems (MEMS/NEMS) technology have led to a niche industry of diverse small-scale devices that include microsensors, micromachines, and drug-delivery systems. For these devices, there is an urgent need to develop micro-LIBs with dimensions on the scale 1-10 mm3 enabling on-board power delivery.
Additive Layer Manufacturing (ALM) is a modern fabrication process that can use a wide range of multi-component materials and is capable of generating 3D components constructed from successive 2D layers. Recent advances in the process capability of ALM have enabled new manufacturing technology for thick and thin-film 2D LIBs and micro-LIBs. ALM has the potential to create 3D electrodes that are specifically designed to achieve a step-change in the energy and power per footprint for surface mountable rechargeable batteries in MEMS and other small electronic devices.