文章信息/Info

Title:

Preparation of Poly(3,4-ethylenedioxythiophene)/ Nickel Foam Composite Electrode and Its Application in Supercapacitors

文章編號:

1674-3962(2020)09-0701-06

作者:

趙鵬宇1; 2; 楊云強1; 2; 侯瑩1; 2; 章海霞1; 2

（1.太原理工大學 新材料界面科學與工程教育部重點實驗室，山西 太原 030024）（2.太原理工大學 新材料工程技術研究中心，山西 太原 030024)

Author(s):

ZHAO Pengyu1; 2;  YANG Yunqiang1; 2;  HOU Ying1; 2;  ZHANG Haixia1; 2

(1.Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China) （2.Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China）

關鍵詞:

3; 4-乙烯二氧噻吩; 泡沫鎳; 比電容; 循環穩定性; 電化學性能

Keywords:

3; 4-ethylenedioxythiophene;  nickel foam;  capacitance;  cycling stability;  electrochemical property

分類號:

TM53；TB333

DOI:

10.7502/j.issn.1674-3962.201905013

文獻標志碼:

A

摘要:

通過研究聚3,4-乙烯二氧噻吩/泡沫鎳（PEDOT/NF）復合電極材料中活性物質PEDOT沉積量對超級電容器性能的影響，獲得了PEDOT/NF復合電極最佳的電化學性能。采用電化學工作站循環伏安法，在電壓窗口為0～1 V、掃描速率為100 mV/s的條件下，通過一步法將單體3,4-乙烯二氧噻吩（EDOT）電鍍到具有較大比表面積以及高電導率的NF上制備PEDOT/NF復合電極，通過掃描電子顯微鏡（SEM）和X射線能譜儀（EDS）對PEDOT/NF復合電極的形貌和元素組成進行分析，通過循環伏安法以及恒電流充放電對PEDOT/NF復合電極的電化學性能進行系統研究。SEM和EDS檢測結果表明，PEDOT均勻、一致地聚合到了NF的骨架上且與NF緊密結合。經測試計算，PEDOT/NF復合電極材料在掃描速率為10 mV/s時質量比電容可以達到308��68 F/g，在恒電流充放電中最小電阻為11.26 Ω，功率密度為1444 W/kg時能量密度為16.03 Wh/kg，經過3000圈伏安循環后電容仍可以保持在其最大電容的79.2%。采用PEDOT/NF復合電極材料制作的超級電容器具有高的質量比電容、大的能量密度和功率密度、較小的電阻以及優良的循環穩定性，展現出卓越的性能。

Abstract:

The optimum electrochemical performance of the poly(3,4-ethylenedioxythiophene)/nickel foam (PEDOT/NF) composite electrode was obtained by studying the effect of PEDOT amount on the performance of the supercapacitor. Monomer 3,4-ethylenedioxythiophene (EDOT) was electroplated on NF with a larger specific area and high conductivity by one-step method, which adopted the cyclic voltammetry of electrochemical workstation with a voltage window from 0 to 1 V and scan rate of 100 mV/s. The morphology and element composition of the PEDOT/NF composite electrode were analyzed by scanning electron microscopy (SEM) and X-ray energy spectroscopy (EDS). The electrochemical performance of the PEDOT/NF composite electrode was systematically studied by electrochemical cyclic voltammetry and constant current charge and discharge. The results of SEM and EDS indicate that PEDOT is uniformly polymerized onto the backbone of NF and tightly combined with NF. The PEDOT/NF composite electrode material has a mass specific capacitance of 308.68 F/g at a sacn rate of 10 mV/s, a minimum resistance of 11-26 Ω at a constant current charge-discharge, energy density of 16.03 Wh/kg at the power density of 1444 W/kg, and 79.2% of the maximum capacitance after 3000 cycles in cyclic voltammetry. Supercapacitors using PEDOT/NF as electrode materials exhibits high mass specific capacitance, large energy density and power density, low resistance, excellent cycle stability, which shows excellent capacitor performance.