Details

Autor(en) / Beteiligte

• Miyamoto, Kaito
• Sasaki, Tsuyoshi
• Nishi, Tomoki
• Itou, Yuichi
• Takechi, Kensuke

Titel

3D-Microbattery Architectural Design Optimization Using Automatic Geometry Generator and Transmission-Line Model

Ist Teil von

• iScience, 2020-07, Vol.23 (7), p.101317-101317, Article 101317

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Optimization of the 3D battery architecture is crucial to improve the performance of microbatteries. However, such optimization is difficult and time consuming by hand for even experts. In this article, we propose a battery optimization system, which consists of an automatic geometry generator and performance simulators. The geometry generator creates feasible 3D batteries without using any human intuition and experience for the spatial arrangement of positive and negative electrodes. For quick evaluation of the internal resistance, which relates power and energy densities, we propose the transmission line model, the so-called 3D porous electrode model, as one of the performance simulators. To show the effectiveness of the optimization system, we designed the lithium-ion microbatteries. In the trade-off frontier for the internal resistance and the capacity, we successfully found a new battery architecture that has higher power and energy densities over the conventional interdigitated plates configuration. [Display omitted] •The automatic geometry generator created feasible 3D microbattery architectures•The use of TLM enabled quick evaluation of the internal resistance of the 3D battery•The optimization system could evaluate the performance of 200,000 3D microbatteries•The optimized battery showed better performance over the interdigitated geometry Electrochemical Energy Storage; Energy Engineering; Energy Systems; Energy Materials