Masakazu Okabe, president of NEC TOKIN corp., Konosuke Kashima, executive vice president of NEC Corp., Masahiko Otsuka, president of Automotive Energy Supply Corp (AESC), Carlos Taveres, executive vice president of Nissan Motor Co., Ltd., and Minoru Shinohara, senior vice president of Nissan Motor Co., Ltd.Nissan’s joint venture with electronics maker NEC will invest $115 million to start mass-producing lithium-ion batteries — a technology widely viewed as key for “green” cars.