-New graphene materials as lithium cathode carriers can greatly improve the cycle life of batteries

New graphene materials as lithium cathode carriers can greatly improve the cycle life of batteries
author:enerbyte source:本站 click704 Release date: 2022-10-25 09:08:19
abstract:
Recently, the research group of Professor Cui Yi of Stanford University has studied a new type of folded graphene cage carrier (WGC) for lithium metal anode. WGC provides excellent mechanical strength, higher ionic conductivity and better quality solid electrolyte interface (SEI).It was found that t...

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Recently, the research group of Professor Cui Yi of Stanford University has studied a new type of folded graphene cage carrier (WGC) for lithium metal anode. WGC provides excellent mechanical strength, higher ionic conductivity and better quality solid electrolyte interface (SEI).

It was found that the uniform and stable SEI interface on the surface of graphene cage carrier could prevent lithium metal from directly contacting with electrolyte. In the current of 0.5mA/cm2, the carbonate electrolyte shows a coulomb efficiency of up to 98.0% from the capacity range of 1-10mAh/cm2, and the cycle life of the battery is greatly improved after the WGC electrode with pre stored lithium is paired with lithium iron phosphate. The relevant research was published on NanoLett. under the title of "Wrinkled graphene caches shosts for high capacity Limited metal nodes shownby crygenic electron microscope".

The mention of Cui Yi is almost unknown in the nano academia. Cui Yi is a regular visitor to academic journals. He is now a tenured professor in the Department of Materials Science and Engineering of Stanford University in the United States. He is mainly engaged in the research of nano materials in the fields of energy, photovoltaic, topological insulating materials, biology and environment. At present, Cui Yi has trained nearly 60 doctors and post doctors, and more than 40 professors worldwide.

Cui Yi is a member of the American Society of Materials, the American Electrochemical Society, the Royal Chemical Society of the United Kingdom, and the associate editor of the world famous scientific journal Nanoflash. More than 400 papers have been published, including Science, Nature and other global magazines, which have been cited for more than 120000 times, the H-factor is 164, and more than 40 international patents have been authorized.

In 1976, Cui Yi was born in Laibin, Guangxi Province. Both parents are teachers and have excellent academic performance since childhood.

In 1993, Cui Yi, 17, graduated from Laibin No. 2 Middle School and was admitted to the Department of Chemistry of University of Science and Technology of China.

After graduating from the undergraduate course in 1998, he successfully passed the TOEFL exam, obtained the full scholarship of Harvard University and the qualification of chemical materials master doctoral study, studied under the guidance of Professor Charles M. Lieber, a material scientist, and studied nanotechnology, including the application of synthetic semiconductor nanowires and nano sensors.

In 2001, Cui Yi was awarded the title of Gold Medal Doctor of the American Society for Materials Research. In 2002, he obtained a doctor's degree from Harvard University in advance, and won the American Outstanding Young Scientist Award for Nanotechnology in the same year.

In 2002, he continued to study as a postdoctoral student at the University of California, Berkeley, and worked with Professor Paul Alivisatos in the field of electronics and assembly using alternate nanocrystals.

In 2003, he won the "Miller" Young Scientist Award of the United States and was awarded the "Top Ten Outstanding Young Scientists" of the United States. In 2004, 100 young inventors in the world were selected by MIT Technology Review.

In 2005, he joined the Department of Materials Science and Engineering of Stanford University as a teacher, successively serving as an assistant professor, associate professor and professor. In 2010, he was awarded a tenure.

In 2014, Thomson Reuters Group of the United States released the list of "Highly Cited Scientists" in the field of global materials science online. Cui Yi ranked first and was praised as "the most influential scientific brain in the world".

In June 2017, Cui Yi, who was just over 40 years old, won the Material Science and Engineering Technology Award of Bravanic Youth Science Award. The Bravannik Young Scientist Award is designed to recognize the most outstanding young scientists in the United States, and only accepts nominations from American research institutes and laboratories.

In 2017, three scientists won the Nobel Prize in Chemistry thanks to the cryoelectron microscope. Inspired by this, Cui Yi began to use the cryoelectron microscope in battery research. He would like to take this opportunity to see the first answer is what the dendrites and boundary facial mask of lithium metal look like at the atomic level.

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