Not only has the capacity of the batteries doubles, the batteries can be charged and discharged over 1,000 times.
To develop the new battery
, the researchers developed a new germanium nanowire-based anode that has the ability to greatly increase the capacity and lifetimes of lithium-ion batteries. This new battery, unlike a typical lithium-ion battery on the market today, is based on graphite and has a relatively low capacity. By using nanotechnology, the team found a way to restructure germanium, in the form of nanowires, into a stable porous material that makes for an ideal battery material.
The research is of potential importance to consumers. There is an ever-increasing demand for portable electronic devices, and improved technology for battery life and stability helps greatly with device performance. There is also an economic factor: the combined value of the market
for rechargeable battery technology was valued at $11.8 billion in 2010.
The research was carried out at the Materials and Surface Science Institute, University of Limerick. The research has been published by
the journal Nano Letters
. The research is titled “High-Performance Germanium Nanowire-Based Lithium-Ion Battery Anodes Extending over 1000 Cycles Through in Situ Formation of a Continuous Porous Network.”