Purdue University has developed an antimony nanochain anode that can increase battery capacity and charge
Researchers at Purdue University have announced a technological breakthrough that may have a significant impact on future battery research and development. Researchers at Purdue University said that the running time of a battery in a cell phone or computer depends on how much lithium ions can be stored in the negative electrode material in the battery. When these lithium ions are depleted, the battery can no longer provide current.
Some materials can store more lithium ions, but these materials are often too heavy or have shape problems to replace graphite in modern batteries. Scientists and engineers at Purdue University have developed a new method that can produce electrodes using the above materials, which can increase the running time of the battery, make the battery more stable, and shorten the charging time.
The researchers developed a new network structure called antimony nanochains. Antimony is a metalloid that enhances the capacity of lithium ions in batteries. Scientists compared the antimony nanochain electrode with the graphite electrode, and found that using the antimony nanochain electrode, the coin-sized battery took only 30 minutes to charge, and the lithium ion capacity doubled, and 100 charge and discharge cycles were performed.
The research team pointed out that some commercial batteries have used carbon metal composite materials similar to antimony metal anodes. However, when these materials store lithium ions, the volume will expand three times, which will cause safety hazards when the battery is charged. The team developed an antimony particle whose nano-chain shape overcomes the shortcomings of the above-mentioned composite material that expands when charged. The research team noticed that antimony nanochains stabilized lithium ion capacity for at least 100 charge and discharge cycles. At the same time, the research team believes that further charge and discharge cycles are unlikely to reduce battery capacity.
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