Dong, Haobo;
(2022)
Design of polymer electrolytes and electrolyte/electrode interfaces for rechargeable zinc-ion batteries.
Doctoral thesis (Ph.D), UCL (University College London).
Preview |
Text
Haobo PhD thesis final version.pdf - Accepted Version Download (8MB) | Preview |
Abstract
Aqueous zinc-ion batteries (AZIBs), deemed as potential candidates for gird/off-grid stationary energy storage, have attracted intensive attention over the last five years because of the advantages in the high volumetric capacity (5855 mAh cm−3) of Zn metal, robustness in aqueous electrolytes and relatively low cost. However, the sluggish Zn2+ diffusion mechanism results in cathode dissolution and even dendrite formation restricting the stability of the battery performance. Polymer electrolytes are of interests owing to their enhanced internal structure and less absorbed water molecules. Therefore, this thesis has developed strategies for stabilising the cathode active materials using polymer electrolytes. With an intensive understanding of hydrogel and solid polymer electrolytes, the electrode-electrolyte interface has been notified as the most critical factor for zinc-ion battery. A universal strategy in interfacial engineering stabilising cathode with the merit of polymer electrolytes has been proposed. Step-by-step investigations are carried out firstly in developing a cathode-stabilised hydrogel electrolyte, then unveiling the interface ageing issue of the polymer electrolytes, and eventually, an innovative interfacial binder design with the emphasis on cathode stabilisation has been developed. Physiochemical and electrochemical characterisations have been performed to unveil the kinetics in detail; moreover, ex-situ materials characterisations and density functional theory (DFT) simulations were also adopted to elucidate specific characteristics of as-prepared polymer electrolytes and interface engineering.
| Type: | Thesis (Doctoral) |
|---|---|
| Qualification: | Ph.D |
| Title: | Design of polymer electrolytes and electrolyte/electrode interfaces for rechargeable zinc-ion batteries |
| Open access status: | An open access version is available from UCL Discovery |
| Language: | English |
| Additional information: | Copyright © The Author 2022. Original content in this thesis is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) Licence (https://creativecommons.org/licenses/by-nc/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms. Access may initially be restricted at the author’s request. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10153845 |
Archive Staff Only
 |
View Item |
