Entries with tag lithium ion battery.

Stretchable Lithium-Ion Battery Demonstrated

US researchers have demonstrated a flexible, stretchable lithium-ion battery that can be recharged wirelessly, enabling its use in numerous applications needing flexible electronic components. Developed by Yonggang Huang, professor of civil and environmental engineering and mechanical engineering from Northwestern University and John A. Rogers, professor of materials science and engineering as well as chemistry at University of Illinois, the battery could power stretchable electronic devices such as implantable medical devices. They have demonstrated the battery powering an LED and continuing to work even when contorted in different ways. It is reportedly capable of stretching by up to 300 percent of its original size while continuing to function. The battery’s life is between eight and nine hours. The researchers plan to publish their work in Nature Communications.  (PhysOrg)(Northwestern University @ EurekAlert)

Researchers Demonstrate Painted Lithium-Ion Battery

Rice University scientists have created a rechargeable lithium-ion battery with components that can be spray painted on a surface. They developed paints for each of the five layers of the battery: two current collectors, a cathode, an anode, and a polymer separator. The researchers then tested the paints’ adhesion by airbrushing them in layers on ceramic bathroom tiles, flexible polymers, glass, stainless steel, and a beer stein. They tested their concept by painting nine bathroom tiles and linking the resulting batteries to power LEDs for six hours. They then recharged it with a small solar cell. According to the scientists—who are refining their work and patenting the technology—the batteries should scale, could be designed as reconfigurable snap-together tiles, and could be used with solar cells and other technologies in energy-harvesting applications. Their work appears online in Scientific Reports. (Science Daily)(Rice University)(Scientific Reports)

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