Zhangfeng Zheng

Title: Innovations by Zhangfeng Zheng in Battery Recycling

Introduction

Zhangfeng Zheng is an accomplished inventor based in Worcester, MA (US). He has made significant contributions to the field of battery recycling, holding a total of 6 patents. His work focuses on innovative methods for recovering valuable materials from exhausted lithium-ion batteries, which is crucial for sustainable energy solutions.

Latest Patents

One of his latest patents is titled "Graphite recovery in recycled batteries." This invention outlines a method for recycling anode materials from a commingled recycling stream derived from exhausted lithium-ion batteries. The process involves receiving a precipitate quantity remaining from a cathode recycling stream, which is primarily graphite used for the anode material. A strong acid is added to the precipitate to remove residual cathode and separator materials, followed by heating the mixture. This method effectively transforms aluminum oxide from the separator into aluminum sulfate, allowing for the washing of contaminants and generating substantially pure graphite.

Another notable patent is "Charge material for recycled lithium-ion batteries." This invention describes a process where cathode material from exhausted lithium-ion batteries is dissolved in a solution to extract useful elements such as cobalt, nickel, aluminum, and manganese. The solution allows for the production of active cathode materials for new batteries without the need for extensive heating or separation of the desired materials into individual compounds. This innovative approach ensures that the resulting active cathode material maintains a predetermined ratio for use in new cells.

Career Highlights

Zhangfeng Zheng has worked at prestigious institutions such as Worcester Polytechnic Institute and the University of Missouri. His experience in these organizations has contributed to his expertise in battery technology and recycling processes.

Collaborations

Throughout his career, Zhangfeng has collaborated with notable colleagues, including Yan Wang and Eric Gratz. These partnerships have further enhanced his research and development efforts in the field of battery recycling.

Conclusion

Zhangfeng Zheng's innovative patents and contributions to battery recycling demonstrate his commitment to advancing sustainable energy solutions. His work not only helps in recovering valuable materials but also plays a vital role in promoting environmental sustainability.