Power and Energy Commons^™

Temperature Dependence Of Electrical Performance Of Tritium Sourced Betavoltaic Cells, Darrell S. Cheu, Tom Adams, Shripad Revankar

The Summer Undergraduate Research Fellowship (SURF) Symposium

There is an increasing need for devices that can be powered for extended periods of time where it is impossible for maintenance or replacement, such as pacemakers, long term space flight or undisturbed sensors for military use. Since 1971, most devices run off a Lithium-Iodide battery, which gives a high amount of power but could only last approximately 2 to 5 years, requiring frequent replacement. However, replacement is unnecessary for betavoltaic cells as they can last at least 20 years. Commercially available tritium betavoltaic cells provided by City Labs Inc. were tested at a temperature range of -50°C to 150°C …