Virtual Booth

The development of reliable, low-cost, and portable energy storage systems is essential for emergency applications where conventional power sources are unavailable. This study explores the design and evaluation of a miniature emergency energy system based on sodium-solution-state batteries (SSSBs). Sodium, an abundant and inexpensive element, provides a sustainable alternative to lithium while ensuring safety and accessibility. The prototype system was constructed using a compact cell configuration with aqueous sodium-ion electrolyte, enabling stable ion transport under ambient conditions. To validate performance, the device was subjected to light-load operation, voltage stability tests, and current response measurements. Results demonstrated consistent voltage output and effective current delivery sufficient to power small-scale emergency devices such as LED lights and low-power communication modules. The findings confirm that the system achieves efficient energy utilization, with rapid charge–discharge capability and minimal material cost. Its simplicity of design, affordability, and portability make it particularly suitable for deployment in disaster relief kits, classroom demonstrations, and backup modules for IoT or sensor-based platforms. Overall, the sodium-solution-state mini battery represents a promising pathway toward safe, accessible, and effective emergency energy solutions, bridging the gap between laboratory innovation and practical, real-world resilience.