Cell Phones With Longer Battery Life: Korean Scientists Develop New Elastic Lithium-Ion Battery

The Battery Showed High Capacity of 5.05 mAh / cm2, Electrochemical Performance Superior by Up to 50% Compared to Conventional Cell Phone Batteries

Researchers from the Korea Institute of Science and Technology developed a high-capacity lithium-ion battery that has a flexible enough structure to last longer during use, especially in cell phones.

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Schematic Diagram of the Manufacturing Process of the Expandable Battery. (Image courtesy of the Korea Institute of Science and Technology).

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In an article published in the journal ACS Nano, the scientists said they were able to make the honeycomb-shaped composite structure project inward using a radial compression process. This process resembles rolling Korean rice rolls, or gimbap, and resulted in the creation of elastic properties.

The structurally expandable electrode consists exclusively of electrode materials and was assembled with a stretchable gel electrolyte and a stretchable package. These elements block air and moisture and prevent the electrolytes from leaking.

According to the proponents, the resulting elastic battery showed high capacity of 5.05 mAh / cm2, superior electrochemical performance by up to 50% under repeated (up to 500) stretch-release cycles and long-term stability of 95.7% after 100 cycles in Air Conditions.

“The elastic lithium-ion battery developed through this research is expected to present a new paradigm in terms of elastic energy storage systems for the further development of electronic devices such as cell phones and other gadgets,” said Jeong Gon Son in a press statement.

In the researcher’s view, the rapidly growing market for high-performance wearable devices has increased the need for energy storage mechanisms to be designed in flexible and stretchable forms.