Material World: The Six Raw Materials That Shape Modern Civilization

by Ed Conway

This concept—the notion that ions could travel across from the crystalline structure of one electrode to nest in the crystalline structure of another—was Whittingham’s brainwave. He called it intercalation, and it’s still the basis of how batteries work today. Whittingham put the theory to work and created the world’s first rechargeable lithium battery. It was only a small thing—a coin-sized battery designed for use in watches—but it was a start. Per kilogram of weight (or rather, given its size, per gram), his battery could hold as much as 15 times the electrical charge of a lead–acid battery. But every time Whittingham tried to make a battery any bigger than a small coin cell, it would burst into flames. In an effort to tame the inherent reactivity of lithium, he had alloyed it with aluminium, but this wasn’t enough to subdue it altogether. So Whittingham’s battery remained something of a curio until the following decade, when researchers working in the UK and Japan finally cracked the code.[3] The key figure here is an extraordinary man called John B. Goodenough, an American physicist who, as it happens, was born in Jena, the German city where Otto Schott and Carl Zeiss first perfected technical glassmaking. After studying at Yale, Chicago and the Massachusetts Institute of Technology, Goodenough eventually found himself in charge of the inorganic chemistry lab at the University of Oxford in the late 1970s and early 1980s, where he played the pivotal role in the battery...