PhD Thesis Defense by Jiayu Cao
Name: Jiayu Cao
Date: 16 Nov 2020
Time: 10:00 – 12:00 pm
Committee Members:
Professor Richard D. Sisson
Professor Yu Zhong
Professor Qi Wen
Professor Yan Wang
Title: Advanced Electrolyte System Design of Battery Towards Expanded Applications on Energy Storage
Abstract:
The battery technology is approaching a larger share portion of the energy storage demands nowadays. These sustainable electrochemical-based methods are gradually replacing the traditional fossil resource to power the world with its carry-on capability and eco-friendly nature. Many applications such as, military power supplies, civil transportation, and stationary storage need higher energy density of the rechargeable battery as the development of society. For example, the goal of commercializing next-generation electric vehicles which can satisfy a longer traveling distance is hard to achieve since the lack of lower cost, higher energy density and longer cycling life rechargeable batteries as next-generation energy storage devices. Both lithium sulfur (Li-S) battery and lithium ion battery (LIB) with silicon anode have potential to be the of the nextgeneration storage batteries. Because sulfur and silicon are both stored largely on earth, exploited easily and low cost. Therefore, a variety of deep dive and large-scale research have been started about Li-S battery and Si anode applied in LIB. Over the last few years, Argonne National Laboratory team has developed various idea and methods to optimize Li-S battery and Si anode used in LIB, such as, introducing appropriate co-solvents and additives, replacing traditional electrolyte with ionic liquid and polymer electrolyte and enhancing Si anode by surface modification. For a comprehensive study, here we discuss four design schemes based on two major problems and one main barrier of Li-S battery and Si anode, respectively. In terms of Li-S battery, first problem is the rapid capacity fading during cycling process and second problem is the lithium
polysulfide shuttling issue.
Join Zoom Meeting
https://us02web.zoom.us/j/6481326474
Meeting ID: 648 132 6474
One tap mobile
+13126266799,,6481326474# US (Chicago) +13017158592,,6481326474# US (Washington D.C) Meeting ID: 648 132 6474
Find your local number:
https://us02web.zoom.us/u/krinkiEu
Comments are closed.