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외부전원 없이 움직임만으로 반영구적인 에너지원 기대
Researchers expect pseudo-perpetual energy source without external electric power

A team of researchers developed an energy storage device based on mechanical movement only without external electric power.

The National Research Foundation of Korea announced yesterday (April 29, 2015) that Professors Kim Sang Jae (as corresponding author) of the JNU Department of Megatronics, Wang Jong Rin and Lee Seung Woo of Georgia Institute of Technology, USA, and Kim Young Soo of Samsung Fine Chemicals developed an energy self-generating and storing battery.

The conventional batteries require external electric power to generate and store the energy in separately compartmentalized devices.

In the newly developed high capacity battery, a piezoelectrically separating membrane is installed between the cathode and the anode to self-generate and simultaneously store the energy as a pseudo-perpetual energy source (thus environmentally “green energy”) without requiring the external electric power for operation.

In contrast to the conventional devices that rely on an external electric generator, both the energy generation and the storage are united, making it possible to manufacture batteries of various sizes and shapes.

The research team expects the availability of such a new device facilitates the development of freely bending as well as wearable batteries. Professor Kim said that the self-generating electric power device could be used for making the next generation smart phones.

The energy research program has been funded by the Ministry of Science, ICT and Future Planning through National Research Foundation and the results were published in the March 26 issue of ACS Nano Online journal.