A research group have made a significant breakthrough in the area of rechargeable battery technology. The team have developed a technology that more than doubles the capacity of lithium-ion battery anodes.
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.”