Materials Selections for Aluminum-Ion Batteries with Much Enhanced Energy Density and Power Density
讲座名称:
Materials Selections for Aluminum-Ion Batteries with Much Enhanced Energy Density and Power Density
讲座时间:
2018-05-29
讲座人:
谭力
形式:
校区:
兴庆校区
实践学分:
讲座内容:
报告题目:Materials Selections for Aluminum-Ion Batteries with Much Enhanced Energy Density and Power Density
报告时间:2018年5月29日下午15:00-16:30
报告地点:仲英大楼B905
报告人:谭力博士
报告摘要:
We cannot see power and energy capacity, but we experience this couple in our daily life. When we drive a car, we can beef up the engine power by stepping on the gas pedal. But we cannot do this for long; otherwise, the gas tank will be emptied quickly. In other words, when the power goes up, the energy capacity goes down. Now the market is quickly diverting to electrical cars, will we experience the same thing in batteries? This question is now getting a positive answer with the work from Professor Li Tan’s group at the University of Nebraska-Lincoln. While most batteries are running under a low power and therefore a high-energy-capacity mode, Li’s invention allows the batteries to run at both high power and high-energy-capacity mode simultaneously. A quick number can tell this, his battery can be charged to its full capacity in 0.3 sec! They demonstrated this record in so called aluminum-ion rechargeable batteries, where an aluminum alloy is used as the anode and a porous graphene network is the cathode. Minimum resistance at the two interfaces between the electrolyte and the electrodes is believed to cause such a high level performance. Besides, their batteries can be discharged and recharged for more than 45,000 cycles, without any loss in battery capacity.
相关视频