Cornell University
Library
Cornell UniversityLibrary

eCommons

Help
Log In(current)
  1. Home
  2. Cornell University Graduate School
  3. Cornell Theses and Dissertations
  4. SILICON/GRAPHITE/GRAPHENE HYBRID ANODES VIA AIR CONTROLLED ELECTROSPRAYING FOR LITHIUM ION BATTERIES

SILICON/GRAPHITE/GRAPHENE HYBRID ANODES VIA AIR CONTROLLED ELECTROSPRAYING FOR LITHIUM ION BATTERIES

File(s)
Joshi_cornell_0058O_10743.pdf (4.91 MB)
Permanent Link(s)
https://doi.org/10.7298/0d4e-y558
https://hdl.handle.net/1813/70035
Collections
Cornell Theses and Dissertations
Author
Joshi, Yash Milind
Abstract

Lithium ion batteries (LIB) have been the front runners to offer solutions to energy storage and electronic applications. The current state of art LIB’s are unable to satisfy the demands for EV applications due to their low energy density. To improve the energy density of LIB’s Silicon has been most promising due its extraordinary theoretical capacity However Silicon anode expands 2-3 times its original size while taking in Lithium ions for their storage. This leads to pulverization and loss of electrical contact of the electrode material leading to severe capacity decay. Thus mitigation of this volume expansion has been a stumbling block for its commercialization. In this work various strategies like an effective assembly of Silicon/ Graphite/ Graphene via Air controlled-Electrospray are utilized to overcome this issue. Moreover, using facile and scalable ways to create mesopores as well as macropores to accommodate the silicon volume expansion is also investigated. The results demonstrates capacity several times higher than the traditional LIB’s as well as stable capacity over several cycles of deep discharge. The results show that the different modes of failure for silicon based anodes are successfully addressed and the proposed assembly by the means of air-controlled electrospray is scalable and economic fabrication technique.

Description
122 pages
Date Issued
2019-12
Keywords
air controlled electrospray
•
composite
•
graphene
•
graphite
•
Lithium ion batteries
•
silicon
Committee Chair
Joo, Yong L.
Committee Member
Hanrath, Tobias
Degree Discipline
Chemical Engineering
Degree Name
M.S., Chemical Engineering
Degree Level
Master of Science
Type
dissertation or thesis
Link(s) to Catalog Record
https://newcatalog.library.cornell.edu/catalog/13119715

Site Statistics | Help

About eCommons | Policies | Terms of use | Contact Us

copyright © 2002-2026 Cornell University Library | Privacy | Web Accessibility Assistance