摘要:
Disclosed is a positive active material for a rechargeable lithium battery. The positive active material includes a core and a surface-treatment layer on the core. The core includes at least one lithiated compound and the surface-treatment layer includes at least one coating material selected from the group consisting of coating element included-hydroxides, oxyhydroxides, oxycarbonates, hydroxycarbonates and any mixture thereof.
摘要:
There is provided a fuel cell system comprising: a stack including at least one electricity generator generating electric energy through a reaction between hydrogen and oxygen and a fuel processing unit which is integrally coupled to the electricity generator and which generates hydrogen from fuel and supplies the generated hydrogen to the electricity generator; a fuel supply unit supplying the fuel to the fuel processing unit; and an oxygen supply unit supplying oxygen to the electricity generator and the fuel processing unit.
摘要:
The invention relates to a membrane-electrode assembly for a fuel cell, a method for preparing the same, and a fuel cell system comprising the same. The membrane-electrode assembly comprises a polymer electrolyte membrane, a catalyst layer spray-coated directly on both surfaces of the polymer electrolyte membrane; and a gas diffusion layer disposing both outer surfaces of the catalyst layer; and a method for preparing the same, and a fuel cell system comprising the same.
摘要:
The present invention relates to an electrode for a fuel cell containing a catalyst layer, a gas diffusion layer including a conductive substrate, and a micro-porous layer interposed between the catalyst layer and the gas diffusion layer and including a conductive material and a dispersant.
摘要:
A fuel cell system includes: a reformer adapted to generate hydrogen from a fuel containing hydrogen through a chemical catalytic reaction using thermal energy; at least one electricity generator adapted to generate electric energy through an electrochemical reaction of hydrogen and oxygen; a fuel supply unit adapted to supply the fuel to the reformer; and an air supply unit adapted to supply oxygen to the reformer and the at least one electricity generator. The reformer includes a plurality of plates stacked with each other and forming at least one passage adapted to allow a fuel or a gas to flow therethrough and at least one catalyst layer coated on inner surfaces of the at least one passage. In the reformer, the at least one catalyst layer is formed to have a plurality of grooves extending substantially in a same direction as of the at least one passage.
摘要:
A fuel cell system includes: a reformer for generating hydrogen from hydrogen-containing fuel; at least one electricity generator for generating electric energy through an electrochemical reaction of hydrogen and oxygen; a fuel supply unit for supplying the fuel to the reformer; and an oxygen supply unit for supplying the oxygen to the reformer and the at least one electricity generator. The reformer includes: a plurality of reaction sections, wherein at least one of the reaction sections has a channel; at least one cover plate; and a bonding joint between two of the reaction sections and between the at least one of the reaction sections and the at least one cover plate to couple the at least one of the reaction sections and the at least one cover plate to each other.
摘要:
The electrode for a fuel cell of the invention includes: an electrode substrate; and a catalyst layer having a filler layer formed on the surface of the electrode substrate and a catalyst coating the filler layer.
摘要:
Disclosed is a positive active material for a rechargeable lithium battery. The positive active material includes at least one compound represented by formulas 1 to 4: LixNi1-yMnyF2 (1) LixNi1-yMnyS2 (2) LixNi1-y-zMnyMzO2-aFa (3) LixNi1-y-zMnyMzO2-aSa (4) where M is selected from the group consisting of Co, Mg, Fe, Sr, Ti, B, Si, Ga, Al, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No and Lr, 0.95≦x≦1.1, 0
摘要翻译:公开了用于可再充电锂电池的正极活性材料。 正极活性材料包括至少一种由式1至4表示的化合物:<?in-line-formula description =“In-line formula”end =“lead”?> Li <?in-line-formula description =“In-line Formulas”end =“lead”?????????????????? (2)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“在线公式 “end =”lead“?> Li x 1 Ni 1-y z Mn x Y z O (3)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description = “In-line Formulas”end =“lead”????????????????????? (4)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中M被选择 由Co,Mg,Fe,Sr,Ti,B,Si,Ga,Al,Sc,Y,La,Ce,Pr,N组成的组 d,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Ac,Th,Pa,U,Np,Pu,Am,Cm,Bk,Cf,Es,Fm,Md, No和Lr,0.95 <= x <= 1.1,0
摘要:
A method of preparing for a positive active material for a rechargeable lithium battery is provided. In this method, a lithiated compound to be coated and an organic solution or aqueous solution including a coating-element source are putted into a mixer, the mixture is continuously stirred to mix the contents thoroughly, and a hot dry gas is introduced into the mixer to evaporate the solvent while the powder is continuously agitated. The resulting dry coated powdery compound is heat-treated at an elevated temperature to obtain an oxide coating on the lithiated compound.
摘要:
A fuel cell system includes a fuel supply unit for supplying fuel, an air supply unit for supplying air, and a stack for allowing hydrogen and oxygen supplied from the fuel supply unit and the air supply unit, respectively, to electrochemically react with each other and generating electrical energy. The stack has a membrane-electrode assembly and separators disposed at both sides of the membrane-electrode assembly. Each of the separators has a fuel passage and an air passage, and the total volume of the air passage is greater than the total volume of the fuel passage.