1. Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
2. Center of Quantum Materials & Devices and College of Physics, Chongqing University, Chongqing 401331, P. R. China
3. Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, P. R. China
4. Analytical and Testing Center of Chongqing University, Chongqing 400044, P. R. China
5. National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, P. R. China