Triboelectric generating device and manufacturing method thereof

Abstract

Disclosed are a triboelectric power generating device and a manufacturing method thereof, which does not require a physical space to generate friction motions unlike conventional pressured induced electric power generating devices, maximizes a surface area by the junction friction portion of a friction material composite that is inexpensive and easy to mass-produce, thereby improving the durability of a generating device, and effectively producing electricity. The triboelectric power generating device includes a triboelectric generation layer including a friction portion having a junction structure which is located at a central portion and made of two or more different polymers, a first electrode which is located to face one surface of the triboelectric generation layer, and a second electrode which is located to face the other surface of the triboelectric generation layer.

1 . A manufacturing method of a triboelectric power generating device comprising:
 a) dissolving and dispersing, or dissolving and dispersing and then mixing, or melting and mixing two or more polymers having different dielectric properties in a solvent, respectively;   b) masking a part of the surface of each of a first electrode and a second electrode having different materials;   c) forming a triboelectric generation layer on the electrode by supplying a polymer solution which is mixed or unmixed in step a) onto a non-masked exposed surface in one of the masked first and second electrodes, and then drying or curing the solution; and   d) laminating and then pressing the other electrode which is not formed with the triboelectric generation layer on the triboelectric generation layer.   
     
     
         2 . The manufacturing method of the triboelectric power generating device of  claim 1 , wherein after at least one of steps c) and d) is performed, a process of annealing the triboelectric generation layer is performed. 
     
     
         3 . The manufacturing method of the triboelectric power generating device of  claim 1 , wherein the solvent is selected from the group consisting of linear and cyclic alkane-based compounds, aromatic-based compounds, ketone-based compounds, linear and cyclic ether-based compounds, amine compounds, sulfide-based compounds, and halogen-based compounds. 
     
     
         4 . The manufacturing method of the triboelectric power generating device of  claim 1 , wherein a mixing ratio of each polymer solution is a weight ratio of 0.1:99.9 to 99.9:0.1. 
     
     
         5 . The manufacturing method of the triboelectric power generating device of  claim 1 , further comprising:
 e) forming a first coating layer on the outer peripheral surface of each of the first electrode and the second electrode; and   f) forming a second coating layer on the outer peripheral surface of each of the first coating layers.   
     
     
         6 . The manufacturing method of the triboelectric power generating device of  claim 5 , wherein the first coating layer is selected from the group consisting of epoxy, polyester, polyurethane, a mixture of paraffin wax and polyolefin, polyethylene terephthalate, polypropylene, polyethylene, polystyrene, polyvinyl chloride, polyethylene naphthalate, polyamide, polyvinyl alcohol, ethylene vinyl alcohol, polyvinylidene chloride, and mixtures thereof, and the second coating layer is selected from the group consisting of polyimide, polyether ether ketone, mixtures thereof, and mixtures of at least one thereof and compounds constituting the first coating layer. 
     
     
         7 . The manufacturing method of the triboelectric power generating device of  claim 1 , further comprising:
 re-supplying the polymer mixed solution used in step c) one time or more onto the surface of the triboelectric generation layer formed in step c) and then drying the solution.   
     
     
         8 . The manufacturing method of the triboelectric power generating device of  claim 1 , wherein a laminated-type triboelectric power generating device is prepared by dissolving and dispersing the polymer in each solvent and then sequentially supplying each polymer solution onto the electrode without mixing.