Researchers have presented an improved nickel beta-galvanic cell with a service life of up to 20 years, which is 10 times more powerful, three times smaller and half the cost of the previous version.
Feature of the original development of the team fromNational Research Technological University MISiS consists of depositing a radioactive element on both sides of a planar p-n junction, which simplifies the manufacturing technology and control of the reverse current that steals the energy of the device. Special microchannel structure increasesthe conversion efficiency of beta radiation is 14 times, which leads to an overall current amplification.
The final battery power is 31 nW/cm2,and short circuit current IKZ – 230 nA/cm2. Increasing the efficiency of converting energy into electricity makes it possible to reduce the consumption of expensive radioisotopes, which reduces the cost of the device by approximately 50%. Due to the modernization of components and their increased performance, a reduction in the weight and dimensions of the battery is achieved without losing the required level of output power
According to scientists, such a beta-galvanic cell can be used as an emergency power source and temperature sensor in devices in space, underwater and in high altitude areas.
We also recently reported on the development of a highly durable Kevlar-doped battery that can be used to fabricate robot components.
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