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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

Nigeria’s Boko Haram: Why negotiations are not an option
2014-10-23



There has been much speculation if the recently announced ceasefire in Nigeria as well as talks with Boko Haram will indeed secure the release of about 200 girls kidnapped by this religious militant group.

Talks already started between the government and Boko Haram but there are still doubts if the girls will be freed and if the Nigerian government can successfully negotiate with Boko Haram. Prof Hussein Solomon, Senior Professor at the University of the Free State, regards this current negotiations as a terrible idea.

“At a time when Boko Haram’s strength is escalating, the correlatory weakness of the Nigerian government is increasingly exposed. As Nigerians prepare for the next presidential elections, embattled President Goodluck Jonathan is increasingly desperate to negotiate with Boko Haram to secure the release of schoolgirls seized by the terrorists earlier this year and to negotiate a ceasefire. This is a terrible idea. It makes a mockery of the rule of law and of the thousands of innocent victims of the militant violence. More importantly, it will only serve to fuel the terrorists’ ambitions further as the powerlessness of the government is exposed.”

Prof Solomon says religious intolerance is on the rise on the African continent, with a concomitant rise in terrorist incidents. In Algeria, extremist terrorism carries the name of Jund al Khilafah or Caliphate Soldiers in Algeria. In Mali it is Ansar Dine or Defenders of the Faith. In Somalia it is Al Shabaab (The Youth). But none of these organisations come close to the carnage wrought by Nigeria’s Boko Haram (literally meaning Western education is forbidden).

Boko Haram has carried out more than 1 000 attacks since 2010, which has resulted in the deaths of 10 000 people and a further 6 million affected by this terrorist violence. The 300 000 Nigerian refugees who have fled this tsunami of terrorism and have sought refuge in neighbouring Cameroon, Chad and Niger, provide adequate testimony to the human costs of such terrorism. Boko Haram, meanwhile, has formed tactical alliances with Al Qaeda in the Islamic Maghreb, Al Shabaab and the Islamic State in Iraq and Syria (ISIS), which means that the groups are sharing intelligence, tactics and material support. This cooperation has also resulted in increasingly sophisticated terror attacks mounted by Boko Haram.

Read more about Prof Solomon and his research.


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