Dr Ruth Knibbe

Lecturer

School of Mechanical and Mining Engineering
Faculty of Engineering, Architecture and Information Technology
ruth.knibbe@uq.edu.au
+61 7 336 54500

Overview

My research interests are in materials for energy generation and storage with specific interest in electrochemistry and electron microscopy

I received my PhD from UQ in Chemical Engineering in 2007. Since completing my PhD I spent 4 years at DTU-Energy (Danish Technical University) and subsequently 5 years at the Robinson Research Institute at Victoria University of Wellington.

My interests are concerned with: in-situ methods for characterising fuel cell and battery materials, the application of machine learning in new material design, development of new materials for Li-S battery systems and understanding degradation mechanisms in fuel cell and battery systems.

Research Interests

  • In-situ electron microscopy methods for characterising battery materials
    Being able to characterise a material in close to operating conditions allows for a real and unique insight into the material behaviour. In electron microscopy, in-situ characterisation is complicated as the electron microscope operates in a strong vacuum. For in-situ observation of battery systems (with a liquid electrolyte) this requires that the cell is encapsulated, while still remaining electron transparent. This work is experimentally challenging, but the unique insight into in-situ nano-scale phenomenon allows battery developers to design improved battery systems.
  • Machine learning in new material design for high temperature solid oxide cells
    I am interested in the field of machine learning and the application of this to oxygen electrode development for high temperature solid oxide cells. Countless studies into new oxygen electrode materials have been reported with still the most popular system for commercial application being the old La-Sr-Mn-O system. From all of this experimental work can a new material be designed? I am interested in collaborators for this work.
  • Degradation phenomenon in battery and fuel cell systems
    Thousands of new electrode materials have been designed, but what holds back many of these new electrode materials from real-life application is the long-term degradation. Degradation phenomenon are system and operating condition dependent. I am interested in researching and understanding how to limit degradation either through material, microstructure or operational design.
  • New electrodes for Li-S batteries
    The energy density of the Li-ion battery is limited be the capacity of the cathode material. Li-S batteries are considered a suitable alternative due to a higher theoretical energy capacity and the low cost of the electrode materials. However, the solubility of the sulphide reaction products and the accompanying problem with cycling stability is an issue for these cells. We are interested into developing new electrolyte systems that reduce the long-term degradation of the Li-S battery.

Qualifications

  • PhD, The University of Queensland

Publications

View all Publications

Supervision

  • Doctor Philosophy

  • Master Philosophy

  • Doctor Philosophy

View all Supervision

Publications

Featured Publications

Journal Article

Conference Publication

  • Palcut, Marian, Mikkelsen, Lars, Neufeld, Kai, Chen, Ming, Knibbe, Ruth and Hendriksen, Peter Vang (2012). Improved oxidation resistance of ferritic steels with LSM coating for high temperature electrochemical applications. In: 7th Petite Workshop on the Defect Chemical Nature of Energy Materials, Storaas, Kongsberg, Norway, (8087-8094). 14-17 March 2011. doi:10.1016/j.ijhydene.2011.11.138

  • Bernuy-Lopez, Carlos, Knibbe, Ruth, He, Zeming, Mao, Xiaojian, Hauch, Anne and Nielsen, Karsten A. (2011). Electrochemical characterisation of solid oxide cell electrodes for hydrogen production. In: Spanish National Congress of Fuel Cells (CONAPPICE 2010), Spain, (4396-4403). 2010. doi:10.1016/j.jpowsour.2010.10.102

  • Kiebach, Wolff-Ragnar, Knibbe, Ruth, Frederiksen, Kristian B., Chen, Ming, Mikkelsen, Lars and Hendriksen, Peter V. (2010). Investigation of failure mechanisms in TI containing brazing alloys used in SOFC/SOEC environments. In: Proceedings of the Asme 8Th International Conference On Fuel Cell Science, Engineering, and Technology 2010, Vol 2. 8th International Conference on Fuel Cell Science, Engineering and Technology, Brooklyn, NY, United States, (655-665). Jun 14-16, 2010. doi:10.1115/FuelCell2010-33039

  • Knibbe, R., Ebbesen, S. D. and Mogensen, M. (2010). Origin of polarization losses in solid oxide electrolysis cells under high current density. In: Electrochemical Technologies for Hydrogen Production. Electrochemical Technologies for Hydrogen Production - 217th ECS Meeting, Vancouver, BC, (77-87). April 25, 2010-April 30, 2010. doi:10.1149/1.3501097

  • Drennan, John, Webb, Rick, Nogita, Kaz, Knibbe, Ruth, Auchterlonie, Graeme, Tatenuma, K. and Hunter, Jane (2006). Analytical electron microscopy of proton exchange membrane fuel cells. In: E. Ivers-Tiffée, J. Maier and S. Singhal, Solid State Ionics 15: Proceedings of the 15th International Conference on Solid State Ionics, Part I. International Conference on Solid State Ionics, Baden-Baden, Germany, (1649-1654). 17-22 July 2005. doi:10.1016/j.ssi.2006.07.016

Other Outputs

Grants (Administered at UQ)

PhD and MPhil Supervision

Current Supervision

  • Doctor Philosophy — Principal Advisor

  • Master Philosophy — Associate Advisor

  • Doctor Philosophy — Associate Advisor

  • Doctor Philosophy — Associate Advisor

    Other advisors:

  • Doctor Philosophy — Associate Advisor

    Other advisors:

  • Doctor Philosophy — Associate Advisor

    Other advisors:

  • Doctor Philosophy — Associate Advisor

    Other advisors: