May 03, 2024

New nanomaterials are expected to improve lithium ion battery performance by 10 times

Belgium IMEC (Microelectronics Research Center) recently demonstrated a new type of nanoparticle material, which may mean its breakthrough in the field of sustainable applications, due to its unique material properties and easy combination of manufacturing, it is hopeful (Sustainable) Industrial applications. For example, more efficient batteries, better catalytic converters, fuel cells and hydrogen production.

The nanowire material is a three-dimensional structure of multiple horizontally connected nanowires, showing highly regular internal spacing and dimensions. Therefore, it combines high porosity and unprecedented surface-to-volume ratio. For every additional micron thickness, the available surface area increases 26 times! Imagine: when filled with a small pot of soda water, its surface area is equivalent to the size of a football field, but its volume is still 75% free. Most importantly, the internal and external dimensions can be tuned to almost any specification, making it potentially compatible with many application requirements.

Many industrial processes are based on chemical reactions taking place on the surface. The more surfaces available, the more simultaneous reactions occur, and the higher the speed or throughput of the process. This unique material can be manufactured by inexpensive anodizing and electroplating processes, and the mold is formed by anodizing aluminum foil, where various materials can be deposited. When the lithium in the battery electrode is converted into lithium ions, the nano-mesh material can achieve large capacity and fast charging, because its large surface combines high porosity and has a load of high energy storage material, while it still serves as a nano film and The current collector is in close contact.

At the same time, the University of Alberta in Canada has recently developed a new type of silicon-based lithium battery, which uses silicon as a negative electrode instead of traditional graphite. Compared with current battery cell products, its charge capacity has doubled by 10 times. This is because silicon absorbs lithium ions more than graphite, but it also has disadvantages. After many times of charging and discharging, silicon is easily broken, because it absorbs and releases lithium ions, it will expand and contract itself There is a crack. In order to improve the performance of silicon, the silicon material is usually nanometerized and compounded, so that it can prevent fracture and maximize the stability and other performance of the battery. Relevant personnel said that if the technology is used in electric vehicle batteries, its mileage may be increased by 10 times.

It can be seen that the peak performance of lithium-ion batteries is still being explored. At the time when all the batteries are fighting, the lithium-ion batteries can only create myths by constantly breaking through technical difficulties.

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