US 12,095,389 B2
Triboelectric nanogenerator using ionic elastomer
Duk Hyun Choi, Seongnam-si (KR); Do Hwan Kim, Anyang-si (KR); Hee Jae Hwang, Yongin-si (KR); Joo Sung Kim, Yongin-si (KR); and Eun Song Jee, Yongin-si (KR)
Assigned to UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Yongin-si (KR); and IUCF-HYU (INDUSTRY-UNIVERISTY COOPERATION FOUNDATION HANYANG UNIVERSITY), Seoul (KR)
Appl. No. 17/264,580
Filed by UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Yongin-si (KR); and IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), Seoul (KR)
PCT Filed Jul. 26, 2019, PCT No. PCT/KR2019/009366
§ 371(c)(1), (2) Date Jan. 29, 2021,
PCT Pub. No. WO2020/027510, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 10-2018-0088738 (KR), filed on Jul. 30, 2018.
Prior Publication US 2021/0336559 A1, Oct. 28, 2021
Int. Cl. H02N 1/04 (2006.01); G01L 1/00 (2006.01)
CPC H02N 1/04 (2013.01) [G01L 1/005 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A triboelectric nanogenerator using an ionic elastomer, the triboelectric nanogenerator comprising:
a first electrode;
an ionic elastomer disposed on the first electrode and comprising an elastomer and an ionic liquid;
a second electrode disposed to be spaced apart from the first electrode and electrically connected to the first electrode; and
an insulator disposed under the second electrode, contacting or separating the ionic elastomer, and formed of a material that has a negative charge compared to the ionic elastomer,
wherein the ionic elastomer and the insulator are brought into contact with each other or are separated from each other by external force, and electrical energy is generated between the first and second electrodes when the ionic elastomer and the insulator are brought into contact with each other and separated from each other,
wherein a plurality of protrusions are provided on one surface of the ionic elastomer to face the insulator so that charge generation increases as a contact surface area between the ionic elastomer and the insulator increases by an external force,
wherein the insulator and the ionic elastomer are pressed by the external force so that one surface of the ionic elastomer provided with the plurality of protrusions contacts or separates from the insulator, and electric double layers (EDLs) capable of generating electrical energy by triboelectrification are formed in the ionic elastomer, and the electrical energy is generated between the first electrode and the second electrode according to pressure and charge generated when the ionic elastomer and the insulator are contacted and separated, and
wherein the elastomer is formed of thermoplastic polyurethane, and the ionic liquid is mixed with the thermoplastic polyurethane at a concentration of 5 to 15% by weight.