Etude electrochimique a l'etat solide du couple anthraquinone—9.10—anthraquinol, en tant que matiere active d'electrode de generateur secondaire
✍ Scribed by G. Matricali; M.M. Dieng; J.F. Dufeu; M. Guillou
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 917 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0013-4686
No coin nor oath required. For personal study only.
✦ Synopsis
R&um&
-Le couple aathraquinon*9.1&anthraquinol pr&.ente les caractkistiques nkessaires pour &tre mis en oeuvre B 1'8tat solide dam les Actions d'&ctrodes ubgatives de gkkrateurs blectrochimiques secondaires en pr&sence d'&ctrolyte aqueux. On a Ctudit les conditions de formation tlectrochimique au sein de I'tlectrode, de l'anthraquinol, peu stable en pr&nce d'oxygkne, A partir de l'anthraquinon*9.10, et on a rnesurt les CaractCristiques 6lectrochimiques de telles &lectrodes. La tension d'tquilibre du systime &ctrochimique a pu &tre situ&e I environ 80mV/enh en milieu sulfurique normal, les capacitts effectives recueillies ont tti mesur& pour diff&rentes conditions de mise en oeuvre des bkctrodes. On a Btudie l'infIuence de la constitution de Electrode, de l'aciditit du milieu et de la tempbature sur ces diffkrentes caractbistiques. Les renseignements tirts de cette ttude ont conduit & la rtalisation d'un accumulateur expt-rimental, dilivrant une tension voisine de 0,5 V, d'Cnergie massique de l'ordre de 25 Whjk d'&clrode. Abstract--The-9.10 anthraquinone-anthraquinol couple has the proper characteristics to be used, in the solid state, in negative electrode reactions of secondary electrochemical generators in the presence of an aqueous electrolyte. Our research work covered the conditions of electrochemical formation of anthraquinol, of little stability in the presence of oxygen, within the electrode and starting with anthraquinone. The eleetrochemical characteristics of such electrodes were then measured. The equilibrium potential of the electrochemical system was about 80 mV/enh in a normal sulphuric medium and the actual capacities recorded were measured with respect to different operation conditions of the electrodes. The variations of these characteristics, according to electrode composition, medium acidity and temperature, were studied. This research led to the development of an experimental battery supplying a voltage of approx 0,5 V and having a mass energy ratio of about 25 Wh/k of electrode.