Positive electrode for metal air battery, metal air battery including the same, and method of preparing the positive electrode for metal air battery

A positive electrode for a metal air battery, the positive electrode comprising:

• a lithium salt;
• a carbonaceous material;
• and
• a coating on a surface of the carbonaceous material, the coating comprising a polymer electrolyte comprising a hydrophilic material and a hydrophobic material,
• wherein a portion of the polymer electrolyte is anchored to the surface of the carbonaceous material by a chemical bond, and
• wherein the polymer electrolyte comprises a block copolymer comprising a hydrophobic block comprising the hydrophobic material and a hydrophilic block comprising the hydrophilic material, and
• wherein the hydrophilic block is a polymer block having a lithium ion conductive group as a side chain and the polymer block having a lithium ion conductive group as a side chain is a polyacrylate block functionalized with —(CF3SO2)2N−, or —(FSO2)2N−, or a polymethacrylate block functionalized with —(CF3SO2)2N− or —(FSO2)2N−—.