مورد إلكتروني
Novel Wet Chemical Syntheses of Graphene Oxide and Vanadium Oxide for Energy Storage Applications
| العنوان: | Novel Wet Chemical Syntheses of Graphene Oxide and Vanadium Oxide for Energy Storage Applications |
|---|---|
| بيانات النشر: | Griffith University Brisbane 2020-03-31 |
| تفاصيل مُضافة: | Zhong, Yu Lin Zhao, Huijun Qin, Jiadong |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Full Text Thesis (PhD Doctorate) Doctor of Philosophy (PhD) School of Environment and Sc Science, Environment, Engineering and Technology The ever-growing demand for high performance energy storage systems has become a driving force for seeking the ideal materials to deliver superior efficacy, and graphene oxide (GO) and vanadium oxide are such two promising nanostructured materials. However, neither of them has been widely adopted in the marketplace at the current stage, mainly limited by their costeffectiveness. While GO and vanadium oxide have been proved to outperform existing materials in the lab-scale studies, the more expensive and less scalable synthesis methods discourage industrial manufacturers from adopting the two materials. The research herein focuses on the novel low cost and scalable wet chemical synthesis methods, which may lead GO and vanadium oxide to greater commercial success. The PhD thesis generally is unfolded into two parts. In the first part, a simple hydrothermal method to synthesize tungsten-doped V6O13 is reported. The introduction of tungsten dopant can have a significant impact on the nanostructure evolution of vanadium oxide during hydrothermal reaction, which results in the formation of nanocrystalline structure. A realtime characterization of the hydrothermal reaction process was employed to reveal the complex phase changes of vanadium oxide in the course, which can be important guidance for controlling the product quality in larger-scale production. Moreover, when applied to lithium ion batteries (LIBs), the doped nanocrystalline V6O13-based electrode can provide better battery performance than the undoped V6O13. In the second part, graphite oxide route to synthesize graphene oxide is investigated in terms of the choices of graphite sources (expanded graphite, graphite intercalation compound and natural graphite), pre-treatment of expanded graphite (microwave-induced expansion of graphite in different atmospheres), reaction temperature, and post-processing of GO. It was found that the expanded graphite prepared in ambient air had higher dispersibility in organic solv |
| مصطلحات الفهرس: | high performance energy storage systems, graphene oxide, vanadium oxide, tungsten-doped, V6O13, Griffith thesis |
| الإتاحة: | Open access content. Open access content The author owns the copyright in this thesis, unless stated otherwise. The author owns the copyright in this thesis, unless stated otherwise. |
| ملاحظة: | application/pdf English English |
| أرقام أخرى: | LG0 oai:research-repository.griffith.edu.au:10072/393192 10.25904/1912/1651 1327829380 |
| المصدر المساهم: | GRIFFITH UNIV From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1327829380 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |