Unlocking the Potential of Na 2 Ti 3 O 7 -C Hollow Microspheres in Sodium-Ion Batteries via Template-Free Synthesis. - Sun, Yong-Gang; Hu, Yu; Dong, Li; Zhou, Ting-Ting; Qian, Xiang-Yu; Zhang, Fa-Jia; Shen, Jia-Qi; Shan, Zhi-Yang; Yang, Li-Ping; Lin, Xi-Jie (Nanomaterials (2079-4991), 2025)