1. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, ANSTEEL Research Institute of Vanadium & Titanium (Iron & Steel), Chengdu 610031, China
2. School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
3. College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China