1. Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources; Qinghai Institute of Salt Lakes; Chinese Academy of Sciences; Xining 810008 P.R. China.
2. Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province; Xining 810008 P.R. China.
3. University of Chinese Academy of Sciences; Beijing 100049 P.R. China.
4. Qinghai Research Center of Low-temperature Lithium-ion Battery Technology Engineering; Qinghai Green Grass New Energy Technology Co. Ltd.; Xining 810000 P.R. China.
5. College of Petrochemical Technology; Lanzhou University of Technology; Lanzhou 730050 P.R. China.
6. College of Chemistry and Chemical Engineering; Central South University, Hunan; Changsha 410083 P.R. China.