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The latest report from scientists in Australia and Singapore says they have developed a new type of catalyst that promises to significantly improve the performance and application range of rechargeable zinc air batteries.
Improving the performance of rechargeable batteries is an important challenge in the era of mobile intelligence.
Lithium is now widely used in rechargeable batteries.
Lithium has relatively small reserves on the earth, and has limited capacity to store electricity, and has greater environmental risks.
Zinc air battery is the an alternative candidate for the lithium battery products, by the metal zinc and oxygen in the air react to produce electricity, has been used in hearing products, film cameras and railway signal device, and other small electronic devices.
But the battery has long lacked the high-performance dual-function oxygen electrode catalyst and can only use expensive precious metals such as platinum and iridium as electrode catalysts, limiting its market competitiveness.
Researchers in the latest issue of the American journal of advanced materials, the report says, their research and development of new catalyst metals such as iron, cobalt and nickel oxide crystallization, may be the catalytic reaction.
In the test, the zinc air battery, which USES the new catalyst, showed good performance. After 120 hours of 60 cycles of charging and discharging, the energy efficiency of the battery was reduced by less than 10%.
Research, the university of Sydney, head of the school of engineering and information technology professor Chen yuan told the xinhua news agency reporter mail in an interview: "we are the breakthrough of research is that through to the elements such as iron, cobalt and nickel series of double metal oxide at the nanoscale components, size and crystallinity of the synchronization control, high significantly the performance of this kind of bifunctional oxygen electrode catalyst."
Chen said the team is working on the basic technical problems that the zinc air battery still has, so that the battery can be put into practice as soon as possible.
A press release from the university of Sydney said the result was a breakthrough in the bottleneck of zinc air battery electrode catalysts, making it possible for zinc air cells to be widely used in electronics.
The world is rich in zinc, which is cheaper.
Zinc-air batteries can theoretically charge up to five times more electricity than conventional lithium-ion batteries and are more environmentally friendly.