Publications논문

Synthesis of conducting polymer-intercalated vanadate nanofiber composites using a sonochemical method for high performance pseudocapacitor applications
2019-11-14 13:46:53 조회수210
Se Hun Lee(a,1), Changyong Park(b,1), Jong Woo Park(c), Seon Jeong Kim(c), Seung Soon Im(a,b,∗),Heejoon Ahn(a,b,d,∗∗) a)Department of Convergence Nanoscience, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea // b)Department of Organic and Nano Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea // c)Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea // d)Institute of Nano Science and Technology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea 원문 링크 : https://www.sciencedirect.com/science/article/pii/S0378775319300333#!

Abstract

The low electrical conductivity and slow rate capability of vanadium oxide limit its utilization in high rate energy storage applications. Many studies are trying to overcome these drawbacks, but it remains a challenge. In this study, we propose a simple strategy to produce conducting polymer-intercalated ammonium vanadate nanofiber composites exhibiting high capacitance and high rate capability. The poly(3,4-ethylene dioxythiophene)-intercalated ammonium vanadate nanofiber composites are produced in a very short time (<4 h) using a sonochemical method. The composite exhibits a high surface area of 85.5 m2 g−1 and excellent electrical conductivity of 4.1 × 10−2 S cm−1. In addition, the lattice distance of the vanadate nanofiber is expanded by insertion of the conducting polymer, which can facilitate transportation of K+ ions into the vanadate nanofibers. These are great benefits for enhancing the specific capacitance and rate capability of the energy storage devices. Therefore, the proposed simple approach can provide a new research direction in the field of high rate energy storage devices. 

 
사이트맵 닫기