Current collector-catalyst monolithic three-dimensional nanofiber network for li-air batteries and manufacturing method thereof

The 3D current collector-catalyst monolithic porous nanofiber network electrode according to claim 19, wherein the 3D current collector-catalyst monolithic porous nanofiber network electrode has a volume in a range of 1 cm3 to 1 m3.

A current collector-catalyst monolithic porous nanofiber network electrode comprising:

• a porous nanofiber network having a fabric-like structure formed by a plurality of nanofibers and a void space formed between the plurality of nanofibers,
• wherein the current collector-catalyst monolithic porous nanofiber network electrode has a core-shell structure including the porous nanofiber network as a center layer (core) and a conductive layer and a catalyst layer continuously coated on a surface of the plurality of nanofibers as a shell.

A method of manufacturing a current collector-catalyst monolithic porous nanofiber network electrode, the method comprising:

• forming a porous non-conductive nanofiber network having a void space formed between polymer nanofibers as the polymer nanofibers are scattered from a solution containing a polymer dissolved therein as a center layer (core);
• and
• forming a nanofiber network structure including a single-layer conductive catalyst layer of non-conductive nanofiber/conductive catalyst layer by forming a conductive catalyst layer of a first coating layer on a surface of the non-conductive nanofiber network (core) as a shell or forming a double-layer nanofiber network structure including non-conductive nanofiber/conductive layer/catalyst layer by forming a conductive layer of a first coating layer on a surface of the non-conductive nanofiber network (core) and continuously forming a catalyst layer of a second coating layer as a shell.

A method of manufacturing a current collector-catalyst monolithic porous nanofiber network electrode, the method comprising:

• forming a porous conductive carbon nanofiber network;
• and
• forming a single-layer nanofiber network structure including conductive carbon nanofiber/conductive catalyst layer by forming a conductive catalyst layer of a first coating layer on a surface of the conductive carbon nanofiber network (core) as a shell or forming a single-layer nanofiber network structure including conductive nanofiber/non-conductive catalyst layer by forming a non-conductive catalyst layer of a first coating layer on a surface of the conductive carbon nanofiber network (core) as a shell.