[Feature] The battery builder

Yi Cui, a materials scientist at Stanford University in Palo Alto, California, is trying to take lithium-ion batteries to the next level. He's not alone: Massive corporations are also attempting to make batteries smaller, lighter, and more powerful. But unlike others who focus on tweaking the chemical composition of a battery's electrodes or its charge-conducting electrolyte, Cui—and his startup, Amprius—are marrying battery chemistry with nanotechnology. He is building intricately structure