An electrode assembly, comprising: a cathode comprising a cathode active material layer; an anode comprising an anode active material layer; the cathode and anode each having facing surfaces, and a ceramic coating layer formed on at least one of surfaces of the cathode and anode that face each other, the ceramic coating layer including ceramic powder and a binder, wherein the particle size distribution of the ceramic powder has a D10 value of more than 0.05 μm and a D90 value of less than 3.0 μm; and wherein the ceramic coating layer is obtainable by coating a ceramic paste having a viscosity of 20 to 3,000cps onto at least one of the cathode or anode, the paste comprising the ceramic powder, the binder and a solvent; and wherein the amount of the binder is less than 10 wt% of the total amount of the binder and ceramic powder, and wherein the amount of the ceramic powder is more than 90 wt% of the total amount of the binder and ceramic powder; wherein the electrode assembly does not have a polyolefin film separator between the anode and the cathode; and wherein the binder is an acrylate group rubber selected from the group consisting of methoxymethyl acrylate, methyl acrylate, methoxyethylacrylate, ethylacrylate, ethoxyethylacrylate, propyl acrylate, butoxyethylacrylate, butyl acrylate, methoxyethoxyethyl acrylate, octylacrylate, vinyl methacrylate, vinyl acrylate, allyl methacrylate, dicyclopentenyloxyethyl acrylate, chloroacetic acid acrylate, 1,1-dimethylpropenylmethacrylate, 1,1-dimethylpropenylacrylate, glycidylacrylate, 3,3-dimethylbutenylmethacrylate, 3,3-dimethylbutenylacrylate, and methyl methacrylate. a cathode comprising a cathode active material layer; an anode comprising an anode active material layer; the cathode and anode each having facing surfaces, and a ceramic coating layer formed on at least one of surfaces of the cathode and anode that face each other, the ceramic coating layer including ceramic powder and a binder, wherein the particle size distribution of the ceramic powder has a D10 value of more than 0.05 μm and a D90 value of less than 3.0 μm; and wherein the ceramic coating layer is obtainable by coating a ceramic paste having a viscosity of 20 to 3,000cps onto at least one of the cathode or anode, the paste comprising the ceramic powder, the binder and a solvent; and wherein the amount of the binder is less than 10 wt% of the total amount of the binder and ceramic powder, and wherein the amount of the ceramic powder is more than 90 wt% of the total amount of the binder and ceramic powder; wherein the electrode assembly does not have a polyolefin film separator between the anode and the cathode; and wherein the binder is an acrylate group rubber selected from the group consisting of methoxymethyl acrylate, methyl acrylate, methoxyethylacrylate, ethylacrylate, ethoxyethylacrylate, propyl acrylate, butoxyethylacrylate, butyl acrylate, methoxyethoxyethyl acrylate, octylacrylate, vinyl methacrylate, vinyl acrylate, allyl methacrylate, dicyclopentenyloxyethyl acrylate, chloroacetic acid acrylate, 1,1-dimethylpropenylmethacrylate, 1,1-dimethylpropenylacrylate, glycidylacrylate, 3,3-dimethylbutenylmethacrylate, 3,3-dimethylbutenylacrylate, and methyl methacrylate.