Youjing Zhao

Title: Innovations of Youjing Zhao in Lithium Processing

Introduction

Youjing Zhao is a prominent inventor based in Xining, China. He has made significant contributions to the field of lithium processing, holding a total of 4 patents. His work focuses on innovative methods for the preparation and separation of lithium compounds, which are crucial for various applications, including battery production.

Latest Patents

One of Youjing Zhao's latest patents is a preparation method of lithium hydroxide. This method involves several steps, including coprecipitating a lithium extraction mother solution with an aluminum salt solution and a sodium hydroxide solution. The process continues with aging, solid-liquid separation, washing, and drying to obtain lithium aluminum hydrotalcite. Following this, the lithium aluminum hydrotalcite is acidified to produce a lithium aluminate solution. The solution undergoes nanofiltration for lithium-aluminum separation, followed by primary concentration through reverse osmosis to yield a lithium-rich solution. The method further includes removing aluminum from the lithium-rich solution and utilizing bipolar membrane electrodialysis to concentrate the lithium hydroxide.

Another notable patent by Zhao is a method for the separation and enrichment of lithium. This method begins with pretreating salina aged brine, followed by separation using a nanofiltration system. The process includes two stages of concentration, utilizing reverse osmosis and electrodialysis systems to enhance the efficiency of lithium ion enrichment. This innovative approach couples various membrane separation technologies to improve both separation and enrichment efficiencies.

Career Highlights

Youjing Zhao is affiliated with the Chinese Academy of Sciences, where he conducts his research and development activities. His work has been instrumental in advancing lithium processing technologies, which are essential for the growing demand in energy storage solutions.

Collaborations

Zhao collaborates with notable colleagues, including Min Wang and Huaiyou Wang. Their combined expertise contributes to the innovative research and development efforts at the Chinese Academy of Sciences.

Conclusion

Youjing Zhao's contributions to lithium processing through his innovative patents highlight his role as a key inventor in this field. His methods for lithium hydroxide preparation and lithium separation demonstrate significant advancements that can impact various industries.