Chinese researchers develop 3D printed lithium metal battery with high energy density Chinese researchers have recently developed a new type of lithium metal battery with 3D printing technology, significantly improving the battery's lifespan and energy density, reported Xinhua on October 29. 2.9w 11-02 16:48 READ MOST 北京多所高校禁用罗马仕充电宝 公司致歉:若有缺陷将依法担责 3415 06-15 13:15 POPULAR TAGS 罗马仕 安全 充电宝