Comparative Analysis of Energy Storage Technologies for Portable Electronics: Beyond Li-Ion Batteries

This study conducts a comprehensive comparative analysis of alternative energy storage technologies for portable electronics, considering key criteria such as energy density, cycle life, charging time, safety, environmental impact, cost, and scalability. The collected data reveals distinct performance attributes. Supercapacitors exhibit rapid charging (2 minutes) and a cycle life of 10,000 cycles. Solid-state batteries offer a balance with an energy density of 150 Wh/kg and a safety rating of 3. Hydrogen fuel cells stand out with high energy density (300 Wh/kg), excellent safety (rating of 5), and low environmental impact (0.8 kg CO2 equivalent). The study highlights potential synergies between these technologies and provides insights for future developments in portable electronics' energy storage