A Look Inside SLAC’s Battery Lab

In this video, Stanford materials science and engineering graduate student Zhi Wei Seh shows how he prepares battery materials in SLAC’s energy storage laboratory, assembles dime-sized prototype “coin cells” and then tests them to see how many charge-discharge cycles they can endure without losing their ability to hold a charge. Results to date have already set records: After 1,000 cycles, they retain 70 percent of their original charge.

Read also: Stanford team aims to improve storage in batteries used in cellphones, iPods, more and Interconnected hollow carbon nanospheres for stable lithium metal anodes

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