Nonsolvent-induced phase separation-derived TiO2 nanotube arrays/porous Ti electrode as high-energy-density anode for lithium-ion batteries

• 作者: Zhi-Jia Zhang Jun Zhao Zhi-Jun Qiao Jia-Min Wang Shi-Hao Sun Wen-Xing Fu Xi-Yuan Zhang Zhen-Yang Yu Yu-Hai Dou Jian-Li Kang Ding Yuan Yue-Zhan Feng Jian-Min Ma
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 393-399
• 页数: 7页
• 语种: 英文

摘要

TiO2 nanotube arrays,growing on three-dimensional (3D) porous Ti membrane,were synthesized using a facile nonsolvent-induced phase separation and anodization process.The length of those three-dimensional nanotube arrays could be tuned by prolonging the anodizing time.When the anodizing time is 8 h,the three-dimensional TiO2 nanotube arrays/porous Ti electrode exhibits well cycling stability and ultra-high specific capacity,which is used in lithium-ion batteries,attributed to the high utilization rate of the substrate and the high growth intensity of the active materials.Three-dimensional TiO2 nanotube arrays/porous Ti electrode,at 100 μA·cm-2 with 8 h anodizing time,shows a typical discharge plateau at 1.78 V and exhibits the specific capacity with 2126.7 μAh·cm-2.The novel nanotube arrays@3D porous architecture effectively shortens the electron/ion transmission path,which could pave way for optimizing the design of high-performance anode materials for next-generation energy storage system.