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John Goodenough, the world's oldest Nobel Prize winner who played a crucial role in developing the lithium-ion battery, has died at the age of 100. He passed away on Sunday, according to the University of Texas at Austin, where he worked as an engineering professor. "John's legacy as a brilliant scientist is immeasurable," said University of Texas at Austin President Jay Hartzell. Dr Goodenough was awarded a Nobel Prize in chemistry in 2019 at the age of 97 for his work on batteries, including the development of the lithium-ion battery. The lightweight, powerful battery sparked a revolution in technology, paving the way for modern portable electronics such as laptops and mobile phones. The batteries also play a critical role in powering larger modern devices, including solar panels. Professor Preetam Singh from India is one of his former students. He told Newsday that one of the key lessons Dr Goodenough taught was the importance of creativity: “'I don’t want you to be trained, I want you to be learned because a lion of the circus is also very trained but it only follows the orders'…that’s what he used to tell, that don’t copy, understand the things in your perspective and then try and do.” (Picture: Shows Dr John Goodenough after he received his Nobel Prize from King Carl XVI Gustaf of Sweden during the Nobel Prize Awards Ceremony at Concert Hall on December 10, 2019 in Stockholm, Sweden. Credit: Pascal Le Segretain / Getty Images.)