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23 February 2024 | Story Leonie Bolleurs | Photo SUPPLIED
Tebogo Motsei
Tebogo Motsei, a PhD student in Physics at the UFS, has been awarded the prestigious CV Raman International Fellowship for African Researchers.

Imagine a supercapacitor/battery made right here in South Africa that could change the way we store energy for the better. A product that can store energy in real time, thus solving energy problems as they happen, which makes a huge difference especially during power outages. A product that is not just good for the environment – transitioning away from lithium-ion batteries – but that can also create jobs and boost the local economy.

What we are talking about is a type of technology known as a sodium-ion supercapacitor/battery, which is the focus of Tebogo Motsei’s research. This technology serves as a power source for lighting, power plants, cars, and phones. Motsei, a PhD student in the Department of Physics on the Qwaqwa Campus of the University of the Free State (UFS), explains that – unlike lithium batteries, which have undergone extensive research and are expensive to produce – they are conducting experimental work and characterisations to determine if sodium-ion supercapacitor/batteries can perform as well or even better, using more affordable and eco-friendly materials.

“Our results, inspired by the urgent need for improved energy storage solutions in South Africa amid its energy challenges, have been very promising. We have successfully developed a sodium-ion supercapacitor/battery that stores as much energy as a lithium-ion battery. Moreover, it was crafted from recycled materials, making it a more cost-effective and environmentally friendly option,” states Motsei, adding that their battery is unique, as no one else in the world has created anything quite like it, despite numerous attempts.

She is also pleased with this supercapacitor/battery’s ability to repair itself. Motsei explains, “Imagine if your toy could fix itself whenever it got broken – that's kind of what our sodium-ion supercapacitor/battery does!”

Motsei is part of a group of scientists in the Department of Physics at the UFS who are working on this research and who have published a scientific article on their work, titled Composite super-capacitor/Na-ion battery with self-healing Fe–Cr alloy electrodes. 

“We're proud of what we have accomplished,” she remarks.

Fellowship: a dream come true

Being part of this impactful research contributed to Motsei receiving the prestigious CV Raman International Fellowship for African Researchers (2023). The fellowship is for African researchers engaged in research at an African institution, providing opportunities for research collaboration in India. Motsei will be the only candidate from South Africa.

This award is merit-based. Motsei attributes her selection to factors such as her strong academic record, research accomplishments, and innovative approach to solving complex problems. She also believes her experience in research, collaboration, and publication reflects her potential to make meaningful contributions to the field during the fellowship period. 

Another key factor contributing to her selection for this fellowship is her skill in fabricating actual devices/prototypes. “The hands-on nature of this research, allowing me to create devices from scratch, has always been my passion. Making my first device – the ‘Magnetron Sputtering Unit’ – during my master’s studies, was a turning point. It made me realise that I had made the best decision ever by choosing this research field. I'm truly passionate about my work,” says Motsei. 

For her PhD studies, she is supervised by Prof Richard Ocaya, Associate Professor in the Department of Physics, and co-supervised by Dr Kamohelo Tshabalala, Senior Lecturer in the Department of Physics. Prof Ocaya, proud of Motsei’s achievements, believes that this fellowship not only serves as a great motivation for students – especially on the Qwaqwa Campus – but also highlights the global relevance of the UFS, particularly the Department of Physics.

Motsei says receiving this fellowship is a dream come true and a profound, life-changing moment for her. “I feel deeply honoured to be concluding this programme at the CSIR-Electrochemical Research Institute, the host institution in India, under the guidance of Prof Arul Manuel Stephan, whose invaluable assistance has been instrumental in my preparations.” Motsei also expressed her gratitude towards everyone who has supported her during this process, including Sudhir Kumar from the Indian Embassy in Pretoria.

“I am excited about how I can use this opportunity to make a difference. Whether it’s tackling significant global energy issues or finding new ways to solve everyday problems, I know this fellowship will give me the tools and support needed to make a real impact. Overall, I see this fellowship as a stepping stone to exciting new opportunities and adventures in the world of research,” she comments.

Making a meaningful impact

Motsei will be leaving for India on 23 February for a period of six months. She is excited about this new chapter in her research journey. “This fellowship will enhance my abilities as a scientist and leader in physics, providing me with essential skills, connections, and experience to make a meaningful impact in science and energy. I'm genuinely happy about this opportunity, which I thank God for.”

  • Sir Chandrasekhara Venkata Raman, after whom the fellowship is named, was a renowned Indian physicist who made great contributions to physics, winning many prizes and awards, including the 1930 Nobel Prize in Physics. He was known for his work in the field of light scattering and was the first Asian and non-European to receive a Nobel prize in any branch of science. 

News Archive

An incident-free recess for the UFS
2010-07-19

The improved security measures at the University of the Free State (UFS) have resulted in an incident-free recess on the Main Campus in Bloemfontein during the 2010 FIFA World Cup and the annual Volksblad Arts Festival.

The UFS provided accommodation for international spectators visiting the country for the World Cup and recently also hosted the hugely popular Volksblad Arts Festival without any security glitches.

These successes could be attributed to the hard work of staff members from various divisions at the UFS to ensure that the security was improved.

“The main question we had to deal with was: should our Main Campus be fenced off? This matter had been under discussion for quite some time. In order to ensure the feasibility thereof, a second impact study was done by a consulting engineer,” said Prof. Niel Viljoen, Vice-Rector: Operations at the UFS.

“This study has shown that, given the nature of activities on the campus and the access configuration, it would be difficult, if not impossible, to effectively control access to the campus, especially as far as visitors were concerned. Any type of access control measure would result in delays at the gates, which could have a major impact on the traffic flow, delays, costs and emissions.”

“It is important that our staff and students feel safe on the Main Campus, whether they are walking on campus or working in their offices. In that way we can ensure an environment that is conducive to staff and students to work and study,” he said.

Various measures are being implemented to make the campuses safer. These include, among others:

  • The installation of alarms in buildings on the Main Campus. The project for the South Campus has been completed and the installation of a new alarm system on the Qwaqwa Campus will start soon.

     
  • Staff and students will be required to wear identification cards once the new identification system has been put in place. These cards will allow access to all buildings.

     
  • Fences around the Main Campus are being repaired and the areas around these fences are being cleaned. This project should be completed by August 2010.

     
  • Lights will be installed in badly lit areas on the Main Campus. The first phase of this project includes the area between the Mooimeisiesfontein, Welwitschia and Vergeet-my-nie residences. This project will also be completed by August 2010.

     
  • The walkways on the Main Campus will be patrolled more frequently and effectively.

     
  • Contracted security workers will be utilised more effectively.

     
  • The monitoring of security cameras on the Main Campus on a 24/7 basis. “For this purpose the security room of our Protection Services is in the process of being upgraded,” said Prof. Viljoen.

The possibility of placing security cameras and panic buttons in parking areas and walkways is investigated.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za  
16 July 2010

 

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