Location History:
- Moillesulaz, CH (1976)
- Le Perreux, FR (1992 - 1994)
- Paris, FR (1978 - 2014)
Company Filing History:
7 out of 8 
4 out of 7 
2 out of 2 
Years Active: 1976-2014
Title: Innovations of Denis Doniat in Alkaline Battery Technology
Introduction
Denis Doniat, an eminent inventor based in Paris, France, has made significant strides in the field of alkaline battery technology. With an impressive portfolio of 20 patents, his innovations focus on enhancing the performance and longevity of storage batteries, particularly through the optimization of silver electrodes.
Latest Patents
Among Denis Doniat's latest patents are two groundbreaking inventions that address key challenges in alkaline battery technology. The first is a **Silver Positive Electrode for Alkaline Storage Batteries**, which enhances cycling capability and extends the lifetime of batteries. By optimizing the conditions for electrochemically reducing oxidized silver species in recharge mode, this invention utilizes a plasticized silver electrode combined with a high-porosity collector, such as woven fabric, felt, or reticulated cellular metal foam. The active compound is prepared in paste form, incorporating metallic silver and/or silver monoxide particles along with a pore-forming metal oxide to improve the electrode's efficiency, particularly in silver-zinc storage batteries.
The second patent is a **Device for Catalytic Recombination of Gases for Alkaline Batteries with Shortened Zinc Anode**. This innovative device addresses the recombination of gases produced during the charging of zinc anode alkaline batteries. It features a catalytic mass in contact with crosslinked cellular metal foam that serves both as a catalyst support and heat dissipating structure. The mass, comprised of a carbon-black metal mixture including platinum metals and a hydrophobic binder, is heat-treated to enhance functionality. Connected to the battery's terminal, this device helps maintain internal pressure levels during charge-discharge cycles, ensuring the battery operates efficiently without maintenance.
Career Highlights
Throughout his career, Denis Doniat has made substantial contributions to the scientific community, working with prestigious organizations like SCP Société de Conseil et de Prospective Scientifique and Sorapec S.A. His expertise in battery technology has positioned him as a key figure in advancing innovations that sustain energy efficiency and battery life.
Collaborations
Denis has collaborated with notable coworkers, including Bernard Bugnet and Robert Rouget, sharing knowledge and expertise that have propelled their collective efforts in battery research and development. These partnerships have fostered an environment conducive to innovation and technological advancements in the field.
Conclusion
Denis Doniat's contributions to alkaline battery technology exemplify the impact of innovative thinking in engineering and energy storage solutions. His patents not only push the boundaries of current technology but also pave the way for future advancements in the industry, ensuring a sustainable energy future.