FABRICATION METHOD OF λ-PHASE MnO2 ELECTRODE FOR AIR CATHODE USING ELECTRON BEAM IRRADIATION, AND THE λ-PHASE MnO2 ELECTRODE FOR AIR CATHODE

• Main Authors: JANG, TAE YOUNG, KIM, MOON SU, EOM, HYE RI, KIM, MIN KYUNG, BAECK, SUNG HYEON, KIM, TAE YUN, SHIN, JOONG HYEOK, LEE, BYUNG CHEOL
• Format: Patent
• Language: English; Korean
• Published: 04.07.2013
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PURPOSE: A manufacturing method of a λ-phase MnO2 electrode is provided to maximize the performance of a catalyst, obtain excellent capacity and charging and discharging performance, and manufacture an air cathode with excellent reversibility. CONSTITUTION: A manufacturing method of λ-phase MnO2 electrode by using electron beam irradiation comprises a step of forming an air electrode material layer including λ-phase MnO2 and porous carbon-based materials in a porous metal support; and a step of irradiating the air electrode material layer with an electron beam. The λ-phase MnO2 is manufactured by the reaction of a LiMn2O4 solution and H2SO4 solution. The pH of the sulfuric acid solution is 2.5 or less. [Reference numerals] (AA) Comparative example 2; (BB) Example 2