A low-temperature emergency power source designed from warm pastes based on hydrogel
Chuanchao Sheng1, Wei Li1, Sixie Yang2
1Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, State Key Laboratory of Solid-State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
Science Bulletin
|June 24, 2025
Summary
This study converts warm paste chemical energy into electrical power using a novel hydrogel-based iron-air battery. This portable power source operates in cold conditions, enhancing safety for outdoor emergencies.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Maintaining power and body temperature is critical in harsh outdoor environments.
- Warm pastes are used for warmth but their energy potential is unexplored.
- Existing power sources may fail in extreme cold.
Purpose of the Study:
- To develop a portable power source from warm paste chemical energy.
- To create a battery functional in low temperatures for emergency use.
- To enhance safety and survival in outdoor expeditions.
Main Methods:
- Designed a hydrogel-based iron-air battery.
- Utilized a low-temperature-resistant electrolyte.
- Manually assembled the battery using warm paste materials.
Main Results:
- The battery operated effectively in low temperatures.
- Generated 0.98 V of voltage and 2.68 Ah of capacity.
- Demonstrated series connection for powering electronic devices.
Conclusions:
- Warm paste chemical energy can be converted to electrical power.
- The developed battery offers a viable emergency power solution for cold conditions.
- This innovation improves safety for outdoor activities and expeditions.
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