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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

Mafuma aims at elusive tournament victory with Junior Springboks
2016-06-03

Description: Mafuma Tags: Mafuma

The University of the Free State’s Mosolwa Mafuma
recently scored five tries in the Junior Springboks’
three practice matches against a Golden Lions U20
invitation team, a Maties team, and the
South Western Districts. Photo: SASPA

He has never won a rugby tournament, so Mosolwa Mafuma has only one goal: to win the Junior World Cup as Junior Springbok in England.

Even though the 20-year-old Shimlas wing has achieved success, and it is pleasing to excel individually, he believes it is more satisfying when his team triumphs. According to Mafuma, who could just as well be an athletics star, he wants to help the South African U20 team take a different approach.

He and the prop Kwenzo Blose are players from the University of the Free State who will represent the Junior Springboks from 7 to 25 June 2016 in Manchester. The team will play the first of three group matches on 7 June 2016 against Japan in the Academy Stadium.

New approach for SA U20 team
Mafuma, who was Player of the Tournament in his first Varsity Cup in 2016, says the Junior Springboks are well prepared. “We have the skills, and the structures at the Junior Springboks are different than before. There is not just one game plan like playing with big guys. We want to try new things and have a different approach.”

It is with this team that he wishes to achieve something. “It is one thing to be able to say that you are the Player of a Tournament, but your team did not win. I have not won something at school (with St. Benedict’s Boys College in Johannesburg) or this year with the Shimlas.”

Speedster on athletics track
The speedster is one of only a few rugby players who also have a profile on the IAAF website. His fastest time in the 100 m is 10.37 seconds (a national U17 record) and 20.37 s in the 200 m.

In high school, this first-year Psychology student played rugby during winter and took part in athletics during summer. Only at the end of Grade 11 did he started focusing on rugby. “I was more of an athlete than a rugby player,” he says.

It is no coincidence that the nickname he acquired due to his speed, is Dash. His other nickname, Senkie (derived from the Afrikaans word ‘seuntjie’) he received as a child from his parents because he was such a small child.

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