(250815) -- TIANJIN, Aug. 15, 2025 (Xinhua) -- This photo provided by Tianjin University shows Hu Wenbin and his colleagues conducting an experiment at a laboratory of the university in north China's Tianjin, Aug. 13, 2025. TO GO WITH "China Focus: Chinese researchers increase lithium battery energy, endurance by 200 percent to 300 percent" (Xinhua)














