Study of oxygen reactions in an aqueous lithium-air battery
type: Dataset
description: The electrochemical lithium-air devices are emerging concepts and their very high theoretical performances have attracted a lot of attention, especially for an application in the electrical vehicle. A target of at least 500 Wh kg-1 is aimed for. The aqueous lithium-air devices have not yet been studied in detail which is not the case for the anhydrous lithium-air technology. This thesis firstly deals with the development of an aqueous lithium-air cell based on a three electrodes setup, and secondly attempts to improve our theoretical knowledge of these systems. This study particularly focuses on the positive compartment of the cell in which oxygen reactions occur. The first section is dedicated to the development of an oxygen evolution electrode made of 316L stainless steel. The study shows its ability to catalyze the oxygen evolution reaction as well its good stability over 3 000 hours of operation. Nevertheless, major problems of catalysis were observed and assigned to the presence of lithium ions in the electrolyte. Li+ ions inhibit the electrochemical oxidation of the active sites, which are needed for the electrocatalytic properties. The behavior of an air cathode was characterized in the same medium. The results show two important phenomena which reduces the electrode performance and which are also attributed to lithium ions : a deactivation of the (MnIII/MnIV) transition and a stabilization of the oxygenated groups at the carbon surface. Finally, an optimization of the electrolytic system was proposed by limiting the Li+ ions activity in solution, which improves the charge/discharge potential efficiency of the battery.
identifier: NNT: 2011GRENI061
issued: 2026-05-06T09:02:36.577877
language: fr
modified: 2026-05-06T09:02:36.577881
contact point: Organization
  fn: CCSD
keyword: accumulateur-lithium-air-aqueux
keyword: electrocatalyse
keyword: infoeu-reposemanticsdoctoralthesis
keyword: lioh-sature
keyword: lithium-air-battery
keyword: oxygen-evolution-reaction
keyword: oxygen-reduction-reaction
keyword: reaction-de-degagement-de-loxygene
keyword: reaction-de-reduction-de-loxygene
keyword: spiotherengineering-sciences-physicsother
keyword: theses
landing page: https://theses.hal.science/tel-00947541

Study of oxygen reactions in an aqueous lithium-air battery
type: Distribution
format: HTML
issued: 2026-05-06T09:02:36.579938
modified: 2026-05-06T09:02:36.556817
access URL: https://theses.hal.science/tel-00947541

test_moissonnage_selune
type: Agent