Materials
·
2024
·Vol. 17
·期 9
·2144
·
IF 3.1
Haiwei Hu,Yanyan Guo,Jiang Zhao
Flexible electronic products, with their characteristics of flexibility and wearability, have attracted significant attention and have become an important direction in the research and development of the electronics industry. Planar micro-supercapacitors (MSCs) with flexible composite electrodes can provide reliable energy support for these products, propelling their further development. The research employed a quick, effective, and environmentally friendly method of laser scribing to create shape-controllable flexible composite electrodes on composite films of Poly(3,4-ethylenedioxythiophene) and graphene oxide (PEDOT/GO), which were subsequently assembled into MSCs. An analysis of the composite electrode morphology, structure, and elemental distribution was conducted through the utilization of SEM, TEM, and XPS techniques. Following this, a comprehensive evaluation of the electrochemical performance of the flexible MSCs was carried out, which included cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and assessment of cyclic stability. The analysis of the CV results indicated that the MSCs achieved the areal capacitance of 5.78 mF/cm2at 5 mV/s. After 5000 cycles at a current density of 0.05 mA/cm2, the capacitance retention rate was 85.4%. The high areal capacitance and strong cycle stability of MSCs highlight the potential of PEDOT/reduced graphene oxide (PEDOT/rGO) electrodes in electrode applications.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Lei Gao,Ruirui Yue,Jingkun Xu,Zhen Liu,Jingdang Chai
In this paper, Pt-PEDOT/reduced graphene oxide (Pt-PEDOT/rGO) nanocomposites were facilely prepared by a simple and cost-effective one-pot method. The obtained nanocomposites were characterized and confirmed by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectra . As expected, the Pt-PEDOT/rGO nanocomposites modified glassy carbon electrode (Pt-PEDOT/rGO/GCE) exhibited higher charge transfer efficiency and electrocatalytic activity to the oxidation of caffeic acid (CA) in comparison with the bare GCE, rGO and Pt-PEDOT modified electrodes (rGO/GCE and Pt-PEDOT/GCE). Furthermore, the Pt-PEDOT/rGO/GCE showed a wide linear range of 5.0 × 10 −9 to 5.0 × 10 −5 M with a low detection limit of 2.0 × 10 −9 M (S/N = 3) for the determination of CA. More experiments indicated that the Pt-PEDOT/rGO/GCE performed superior reproducibility, selectivity and long-term stability. Finally, the modified electrode was also applied to detect CA in green tea and black tea samples with promising recovery and application prospect.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 17
·4993-5003
·
IF 7
Yuanduo Qu,Siqi Liao,Liangyi Wu,Junkai Wang,Lianfeng Duan,Xia He,Fushen Lu
An integrated photocapacitor (IPC) is a light-driven self-charging capacitor, which can overcome the impact of solar energy fluctuations by converting the solar radiation to electrochemical energy and store it simultaneously. However, current IPCs suffer from incompatibility problems, device packing, serious carrier recombination, and long-range electron transmission path, which lead to low conversion efficiency and cycling performance. To address these issues, we propose a three-electrode quasi-solid-state IPC based on a charge-separated transition mechanism of PEDOT/RGO compatible electrode and BMIMBF4 ion gel electrolyte to accelerate carrier migration. The overall conversion efficiency of this IPC reached 5.8% and the energy storage efficiency could be maintained at 84.57%. Besides that, this bendable free-standing electrode can be applied in flexible and high-voltage IPCs as a reliable off-grid systems to supply next-generation electronics.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Liying Sheng,Zhenjiang Li,Alan Meng,Qinhai Xu
The novel nanocomposite of Ni(OH) 2 nanoparticles over reduced graphene oxide and poly (3,4-ethylenedioxythiophene) hybrid film (Ni(OH) 2 @PEDOT-rGO) have been successfully fabricated via a facile, scalable and easy-to-control electrodeposition method. The characterization results of scanning electron microscope (SEM) and electrochemical techniques show that Ni(OH) 2 nanoparticles with an average particle size about 10 nm are uniformly deposited on PEDOT-rGO hybrid film with rough surface and reveal outstanding performance for detecting glucose. The enzyme-free glucose sensor exhibits an ultrafast response time (< 1 s), a wide linear range (0.002–7.1 mM), a low detection limit (0.6 μM) and a high sensitivity (346 μA mM −1 cm −2 ). Moreover, the sensor also displays superb selectivity, excellent reproducibility and good stability. The outstanding properties of the sensor may be attributed to the synergistic effect of Ni(OH) 2 nanoparticles possessing high electro-catalysis activity and PEDOT-rGO having well conductivity. More importantly, the sensor was successfully used to determine glucose in the real samples. In addition, the mechanism of electrodeposited PEDOT-rGO and glucose oxidase was investigated.
研究领域:
材料科学
·
电化学
·
分析化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Lei Gao,Ruirui Yue,Jingkun Xu,Zhen Liu
In this research, a ternary nanocomposite, based on iron oxide (Fe 2 O 3 ), reduced graphene oxide (rGO) and PEDOT had been successfully synthesized via one-pot method for the electrochemical detection of caffeine. The obtained nanocomposite Fe 2 O 3 /PEDOT/rGO was characterized by SEM, EDS, XRD, XPS and Raman spectroscopy to confirm the morphology, structure and composition. In addition, the electrochemical behaviors of caffeine on the nanocomposite modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. The results demonstrated that the Fe 2 O 3 /PEDOT/rGO nanocomposite exhibited excellent electrocatalytic activity to caffeine. Under the optimized conditions, the Fe 2 O 3 /PEDOT/rGO modified glassy carbon electrode showed a wide linear range of 1.0 × 10 -6 to 8.0 × 10 -4 M with the correlation coefficient of 0.992 and a detection limit of 3.3 × 10 -7 M for the determiantion of caffeine. Furthermore, the modified electrode displayed high sensitivity and selectivity, good reproducibility and long-term stability in subsequent experiments. It was also successfully used to determine caffeine in beverage samples.
研究领域:
材料科学
·
电化学
·
分析化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Xiaoting Liu,Yingyi Ma,Yu Si,Xinzheng Li,Xinran Li,Jingfang Li
Conducting polymers hold great prospects in energy storage, especially in the field of flexible energy storage, however, their broad applications are limited due to the poor processability, difficulty in structural design diversity and unsatisfactory performance when used alone. Herein, the processability of PEDOT in organic phase is significantly enhanced by surfactant modification via a self-assembly process, contributing to the convenient and low-cost construction of 3D PEDOT architecture. Importantly, the PEDOT and rGO can be introduced into the same porous structure synchronously and conveniently. Superior capacitive performance is shown for the porous PEDOT/rGO film benefits from the combination of PEDOT with excellent electrochemical stability, rGO with high conductivity and porous structure with abundant active sites and chambers for electrolyte storage. The porous PEDOT/rGO film can be used as a scaffold for the deposition of conductive polymers. For example, once PPy is deposited, a high specific capacitance of 407.8 F g -1 at a current density of 0.5 A g -1 , accompanied by a prominent capacitance retention of 90% after 5000 cycles are achieved. When it is used to construct the symmetric supercapacitor (SSC), a high energy density of 52.9 Wh kg -1 at the power density of 200.2 W kg -1 is delivered, with a high capacitance retention of 85%. Moreover, it shows excellent mechanical flexibility upon multiple bending cycles, rendering great potential in portable or wearable energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Zhen Liu,Jingkun Xu,Ruirui Yue,Taotao Yang,Lei Gao
This paper demonstrates that Au–PEDOT/reduced graphene oxide nanocomposite (Au–PEDOT/rGO) can be rapidly synthesized through a facile, cost-effective one-pot method with chloroauric acid as the oxidant and NaBH 4 as the reductant successively. The morphology, composition and structure of the obtained composites were confirmed by SEM, TEM, XRD, Raman and XPS characterizations. The Au–PEDOT/rGO modified glassy carbon electrode (GCE) showed significantly improved charge transfer efficiency and high electrocatalytic activity toward caffeic acid (CA) oxidation as compared to bare GCE and Au-PEDOT modified electrode. Under optimized conditions, the Au–PEDOT/rGO constructed sensors exhibited a wide linear range of 0.01–46 μM with the correlation coefficient of 0.9926 and a detection limit as low as 0.004 μM for the detection of CA. To validate its possible application, the present sensor was also illustrated with satisfactory anti-interference performance, high reproducibility and sensitivity for the determination of CA in red wine sample. The prepared Au–PEDOT/rGO nanocomposite is a promising electrode material for the determination of CA in red wines or other CA-containing food and beverage.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）