Carbon Materials for Sodium- and Potassium-based batteries
Author(s)
Guo, Zhenyu
Type
Thesis
Abstract
Developing battery technologies to satisfy the increased demand for energy storage has become imperative, particularly for post-lithium batteries that can potentially replace lithium-ion batteries (LIBs). Sodium-based and potassium-based battery technologies are regarded as potential complements due to the abundant resources of Na and K compared to the limited lithium reserves worldwide and their similar characteristics as alkali-metals. Regarding the electrodes, especially anodes, carbon materials are the most promising candidates due to their cost-effectiveness, availability, and reliable structural stability.
The motivation of the PhD projects is to apply hard carbon and graphite materials to high-performance sodium-based and potassium-based battery technologies including sodium-ion batteries (NIBs), potassium-ion batteries (KIBs), and dual-ion batteries (DIBs). The first experiment project of this thesis (Chapter 4) is a comparative study of a series of hard carbons in LIBs, NIBs, and KIBs. The differences in electrochemical performance delivered by those alkali-metal-ion batteries were revealed by electrochemical analysis and structural characterisations. The best-performing hard carbon was found when used in NIBs, and it was upscaled in a practical pouch cell to demonstrate an ultra-long cycling and high-powered NIB...
The motivation of the PhD projects is to apply hard carbon and graphite materials to high-performance sodium-based and potassium-based battery technologies including sodium-ion batteries (NIBs), potassium-ion batteries (KIBs), and dual-ion batteries (DIBs). The first experiment project of this thesis (Chapter 4) is a comparative study of a series of hard carbons in LIBs, NIBs, and KIBs. The differences in electrochemical performance delivered by those alkali-metal-ion batteries were revealed by electrochemical analysis and structural characterisations. The best-performing hard carbon was found when used in NIBs, and it was upscaled in a practical pouch cell to demonstrate an ultra-long cycling and high-powered NIB...
Version
Open Access
Date Issued
2023-05-01
Date Awarded
2023-10-01
Copyright Statement
Attribution-NonCommercial 4.0 International Licence (CC BY-NC)
License URL
Advisor
Titirici, Magdalena
Sponsor
China Scholarship Council
Imperial College London
Publisher Department
Chemical Engineering
Publisher Institution
Imperial College London
Qualification Level
Doctoral
Qualification Name
Doctor of Philosophy (PhD)