General Motors Co. and Palo Alto-based OneD Battery Sciences have entered a joint research development agreement for the potential use of OneD’s silicon nanotechnology in GM’s battery cells to increase energy density for longer range at a lower cost. GM Ventures participated in OneD’s Series C funding round, which the company recently closed at $25 million. OneD’s SINANODE platform adds more silicon onto the anode of a battery cell by fusing silicon nanowires into EV-grade graphite. Silicon stores up more energy than graphite. It’s believed this is the first time two American companies collabo…