Unknown

Dataset Information

0

High-performance Supercapacitors Based on Electrochemical-induced Vertical-aligned Carbon Nanotubes and Polyaniline Nanocomposite Electrodes.


ABSTRACT: Supercapacitors, which store electrical energy through reversible ion on the surface of conductive electrodes have gained enormous attention for variously portable energy storage devices. Since the capacitive performance is mainly determined by the structural and electrochemical properties of electrodes, the electrodes become more crucial to higher performance. However, due to the disordered microstructure and low electrochemical activity of electrode for ion tortuous migration and accumulation, the supercapacitors present relatively low capacitance and energy density. Here we report a high-performance supercapacitor based on polyaniline/vertical-aligned carbon nanotubes (PANI/VA-CNTs) nanocomposite electrodes where the vertical-aligned-structure is formed by the electrochemical-induction (0.75?V). The supercapacitor displays large specific capacitance of 403.3?F?g-1, which is 6 times higher than disordered CNTs in HClO4 electrolyte. Additionally, the supercapacitor can also present high specific capacitance (314.6?F?g-1), excellent cycling stability (90.2% retention after 3000 cycles at 4?A?g-1) and high energy density (98.1?Wh?kg-1) in EMIBF4 organic electrolyte. The key to high-performance lies in the vertical-aligned-structure providing direct path channel for ion faster diffusion and high electrochemical capacitance of polyaniline for ion more accommodation.

SUBMITTER: Wu G 

PROVIDER: S-EPMC5341108 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

altmetric image

Publications

High-performance Supercapacitors Based on Electrochemical-induced Vertical-aligned Carbon Nanotubes and Polyaniline Nanocomposite Electrodes.

Wu Guan G   Tan Pengfeng P   Wang Dongxing D   Li Zhe Z   Peng Lu L   Hu Ying Y   Wang Caifeng C   Zhu Wei W   Chen Su S   Chen Wei W  

Scientific reports 20170308


Supercapacitors, which store electrical energy through reversible ion on the surface of conductive electrodes have gained enormous attention for variously portable energy storage devices. Since the capacitive performance is mainly determined by the structural and electrochemical properties of electrodes, the electrodes become more crucial to higher performance. However, due to the disordered microstructure and low electrochemical activity of electrode for ion tortuous migration and accumulation,  ...[more]

Similar Datasets

| S-EPMC9044567 | biostudies-literature
| S-EPMC8912692 | biostudies-literature
| S-EPMC5225489 | biostudies-literature
| S-EPMC6696370 | biostudies-literature
| S-EPMC10346469 | biostudies-literature
| S-EPMC9276741 | biostudies-literature
| S-EPMC4432658 | biostudies-literature
| S-EPMC7992182 | biostudies-literature
| S-EPMC7696344 | biostudies-literature
| S-EPMC4585780 | biostudies-literature