Title:
CATALYST FOR AIR ELECTRODE, AIR ELECTRODE INCLUDING CATALYST FOR AIR ELECTRODE, AND AIR SECONDARY BATTERY INCLUDING AIR ELECTRODE
Abstract:
A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air electrode. This catalyst for an air electrode is a catalyst for an air electrode including an oxide containing at least bismuth (Bi), ruthenium (Ru), sodium (Na), and oxygen, and Na/(Ru+Bi+Na) representing an atomic ratio of the sodium to a sum of the bismuth, the ruthenium, and the sodium is 0.126 or more and 0.145 or less.
Titles:
AIR ELECTRODE HAVING HYDROGEN PEROXIDE-CONTAINING ELECTRIC DOUBLE LAYER, AND METAL-AIR BATTERY USING SAME
過酸化水素を含む電気二重層を備える空気極及びそれを用いる金属空気電池
Abstracts:
[Problem] To provide an air electrode having a dipole electric double layer containing hydrogen peroxide, and a metal-air battery having the same. [Solution] Provided are: a separator-less battery in which, in a neutral or alkaline electrolyte containing hydrogen peroxide, a cathode electrode of metal copper, a metal anode having a lower electrode potential than copper, and an electric double layer comprising the hydrogen peroxide as a dipole are formed to provide an insulating dipole electric double layer that functions as a separator between the anode electrode and the cathode electrode; and a metal-air battery that uses, as an air electrode, a copper cathode having an electric double layer comprising hydrogen peroxide as a dipole.
Titles:
Carbon nanorods decorated with nickel-cobalt alloy nanoparticles and their preparation method and application
镍钴合金纳米颗粒修饰的碳纳米棒及其制备方法和应用
Abstracts:
The invention provides a carbon nanorod modified by nickel-cobalt alloy nanoparticles, a preparation method thereof, and an application as a bifunctional oxygen electrocatalyst for an air cathode of a zinc-air battery. In the carbon nanorod modified by nickel-cobalt alloy nanoparticles provided by the present invention, nickel and cobalt are uniformly dispersed on the carbon nanorod. The carbon nanorod modified by the nickel-cobalt alloy nanoparticles provided by the invention has excellent oxygen reduction (ORR) and oxygen evolution (OER) properties, and exhibits excellent bifunctionality. The optimal difference (△E) between the potential and the oxygen reduction half-wave potential at a density of 10 mAcm-2 can reach 0.74v. In addition, the zinc-air battery assembled from the carbon nanorods modified by the nickel-cobalt alloy nanoparticles of the present invention has the characteristics of good charge-discharge cycle stability and long life.
Applicants:
China Petroleum & Chemical Corp. (Sinopec) (中国石油化工股份有限公司)
Sinopec Shanghai Research Institute for Petrochemical Technology (中国石油化工股份有限公司上海石油化工研究院)
Inventors:
李光
李磊
彭威
王贺团
张晶晶
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