John Goodenough received the 2019 Nobel Prize in Chemistry at the age of 97, becoming the oldest person to date. He has now passed away at the age of 100. The University of Texas at Austin announced on Monday that Goodenough, born in Jena in 1922 to American parents, had died on Sunday.

Goodenough was a “dedicated public servant, a well-loved mentor and a brilliant but humble inventor,” the university said. Goodenough is best known for his contributions to the development of modern lithium-ion batteries.