James Rozelle

Title: Innovations by James Rozelle in Alkaline Cell Technology

Introduction

James Rozelle is an accomplished inventor based in Fairfield, CT (US), known for his significant contributions to alkaline cell technology. With a total of 5 patents to his name, Rozelle has developed innovative methods that enhance the performance and efficiency of alkaline cells.

Latest Patents

One of his latest patents is a method of adding electrolyte to a gap between the cathode and separator of an alkaline cell. This invention features an alkaline cell with a flat housing, preferably cuboid in shape, which can accommodate an anode made of zinc and a cathode comprising manganese oxide. The design allows for a relatively small overall thickness, typically between 5 and 10 mm. The cell contents can be supplied through an open end in the housing, with an end cap assembly that seals the cell. A unique aspect of this invention is the gap between the separator and cathode, which facilitates the insertion of additional electrolyte. The end cap assembly includes a vent mechanism that activates when gas pressure within the cell reaches a threshold level, ensuring safety and efficiency.

Another notable patent by Rozelle involves an alkaline cell with an improved cathode that includes copper hydroxide and a sulfur additive. This design features an anode made of zinc and an aqueous alkaline electrolyte, with a cathode mixture that comprises copper oxide or copper hydroxide. The addition of graphitic carbon, preferably expanded graphite or graphitic carbon nanofibers, significantly reduces cathode resistivity, enhancing the cell's performance. The incorporation of sulfur into the cathode mixtures further improves the overall capacity of the alkaline cell.

Career Highlights

James Rozelle is currently associated with The Gillette Company, where he continues to innovate in the field of alkaline cell technology. His work has contributed to advancements that not only improve product performance but also enhance user safety.

Collaborations

Rozelle has collaborated with notable coworkers, including Francis Wang and Cahit Eylem, to further his research and development efforts in alkaline cell technology.

Conclusion

James Rozelle's innovative patents and contributions to alkaline cell technology demonstrate his commitment to advancing energy solutions. His work continues to impact the industry positively, showcasing the importance of innovation in modern technology.