Chinese Journal of Mechanical Engineering
·
2025
·
IF 4.5
Gang Yu,Qianguo Yu,Zhaobang An,Yixuan Zhu,Kedong Bi
The global epidemic of diabetes urgently requires continuous and non-invasive glucose monitoring techniques. This article presents the development of a novel Pt/PANI-modified TiO 2 /PVAc nanofiber electrochemical sensor to address this challenge. In this research, the doping of Pt particles and PANI particles has effectively enhanced the electrochemical performance of the electrode. TiO 2 is first mixed with PVAc powder and then dissolved in an acetone/ethanol solution. Subsequently, fibers are fabricated through electrospinning technology and laid onto the electrode surface. The incorporation of TiO 2 offers more active sites for the deposition of Pt and PANI, thereby strengthening the stability of the overall structure. Furthermore, after the immobilization of Pt and PANI, the designed electrode demonstrates more outstanding performance in glucose detection. Experiments have shown that the peak current of the Pt/PANI/TiO₂/PVAc electrode in the electrochemical detection of glucose is 11 times that of the TiO₂/PVAc electrode. The results indicate that the ultimate electrode exhibits a detection limit of 0.001 mM, with a sensitivity of 7.818 μA·mM⁻¹·cm⁻², and a linear detection range spanning from 50 μM to 7 mM. These characteristics render it suitable for applications involving the detection of physiological glucose concentrations. This work demonstrated a promising step towards practical and effective wearable glucose monitoring, offering a safer and more convenient alternative for diabetes management.
研究领域:
电化学传感器
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纳米材料
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可穿戴设备
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糖尿病技术
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Shi-long Liu,Ying Wang,Hu Chen,Yong-kang Lyu
Photocatalysis is an effective approach for phenol degradation, and the crux of realizing this process lies in the photocatalytic material. Silver phosphate (Ag 3 PO 4 ) is a highly efficient and pollution-free photocatalytic material; however, it has a high recombination rate of photogenerated charge carriers. In this study, aiming at the deficiencies of Ag 3 PO 4 , a simple in-situ precipitation method was utilized to successfully prepare an Ag 3 PO 4 /PANI/g-C 3 N 4 photocatalyst with excellent visible-light photocatalytic performance. An analysis was carried out on the composition, morphology, structure, and optical properties of the prepared samples. Compared with the pure Ag 3 PO 4 , Ag 3 PO 4 /PANI, and Ag 3 PO 4 /g-C 3 N 4 composites, the Ag 3 PO 4 /PANI/g-C 3 N 4 composite demonstrated a remarkable improvement in the photocatalytic degradation of phenol under visible light. The Ag 3 PO 4 /PANI/g-C 3 N 4 photocatalyst, with a mass ratio of PANI, g-C 3 N 4 , and Ag 3 PO 4 of 1:10:50, exhibited superior phenol degradation capabilities under visible light, achieving complete degradation within 30 minutes, a total organic carbon (TOC) degradation efficiency of 88.7%, and enhanced stability compared to pure Ag 3 PO 4 after four cycles. This study presents, for the first time, the strategic combination of PANI and g-C 3 N 4 to synergistically enhance the photostability and activity of Ag 3 PO 4 . Experiments involving electron spin resonance (ESR) and free-radical capture revealed that the main active species are holes and superoxide radicals. The objective of this research is to introduce novel concepts and techniques for the application of photocatalytic materials in environmental pollution management.
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高影响因子
Nanoscale Research Letters
·
2020
·Vol. 15
·期 1
·1-8
·
IF 3.578
Ben Jianwei,Song Zhiyuan,Liu Xinke,Lü Wei,Li Xiaohua
Abstract The flexible and rechargeable energy storage device with excellent performance is highly desired due to the demands of portable and wearable devices. Herein, by integrating the bendability and stretchability of Polyvinyl alcohol (PVA), pseudocapacitance of Polyaniline (PANI), and the charge transport ability of carbon nanotubes (CNTs), PVA/CNT/PANI flexible film was fabricated as supercapacitor electrodes with excellent electrochemical performance and flexibility. Full-solid supercapacitor is prepared based on PVA/H 2 SO 4 gel electrolyte and as-prepared film electrodes. The device achieves an areal capacitance of 196.5 mF cm -2 with high cycling stability. The flexible properties of PVA, the conductivity of CNT, and the pseudo-capacitance of PANI contribute to the superior performance. Present work develops a facile and effective way for preparing flexible electrode materials. Graphical Abstract In present work, we fabricated PVA/CNT/PANI flexible film as supercapacitor electrodes with excellent electrochemical performance and flexibility.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2018
·
IF 0
Jun Li,Yifei Yuan,Huile Jin,Huihang Lu,Aili Liu,Dewu Yin,Jichang Wang,Jun Lu,Shun Wang
As a promising cathode material for rechargeable lithium ion batteries , tellurium has attracted a great deal of attention due to its high conductivity and high theoretical capacity. Yet, the large volume expansion (~104 vol%) during Li-Te alloying process prevents the application of Li-Te battery . Here, by using a novel one-step nonlinear electrochemical approach, we prepared a Te x S y @polyaniline nanorod composites, in which elemental sulfur is successfully embedded into tellurium matrix to effectively tackle the volumetric variation problem. In situ transmission electron microscopy (TEM) of the Li-Te (de)alloying process on single Te x S y @polyaniline particle demonstrated that the volumetric variation was efficiently suppressed in comparison to the situation of pristine Te particles. Moreover, polyaniline binder effectively trapped Te and sulfur species in its network and guaranteed stable electric contact and fast transport of Li ions , which resulted in significant improvement of the battery performance. Interestingly, the as-obtained composites display a high initial capacity of 1141 mA h g −1 with typical Li-S battery characteristics at a low current density of 0.1 A g −1 , while it shows a good cycling stability at high current density of 5 A g −1 with Li-Te battery features.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Huitao Yu,Xin Ge,Chaoke Bulin,Ruiguang Xing,Ruihong Li,Guoxiang Xin,Bangwen Zhang
Herein we reported a novel routine to easily access graphene/polyaniline paper (GPp) as supercapacitor electrodes through controlled in-situ polymerization followed by roll coating. According to this routine, the load fraction of PANI can be easily controlled by feed ratio of aniline to GO . In the resulting GPp, PANI nanoarrays anchored graphene nanosheets and PANI nanofibers throughout the bulk coexist, and the former construct a three-dimensional network. As a result, the GPp as a freestanding electrode exhibits excellent electrochemical properties. It can deliver a high capacitance up to 838 F/g at a current density of 1 A/g, while keeps high retention of 93.7% at 10 A/g over 5000 cycles. Kinetics analysis shows that the GPp stores both surface capacitance and diffusion capacitance, but the former dominates the latter.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2020
·Vol. 6
·期 12
·125621
·
IF 1.929
Haopeng Cai,Bo Cheng,Hongbo Xiao,Qinqin Wei
A novel rGO/p-Fe3O4@PANI three-phase nanomaterial was prepared by coating conductive polyaniline (PANI) on reduced graphene oxide (rGO) and porous Fe3O4 (p-Fe3O4), which can increase the reflection interface of electromagnetic waves and extend the reflection path of electromagnetic waves propagating inside the material, and between them. Three kinds of rGO/p-Fe3O4@PANI samples were prepared. The mass percentage of PANI in the samples was established. The mass ratio of rGO to p-Fe3O4 was changed to ameliorate the impedance matching and attenuation constant. Compared with rGO/p-Fe3O4, rGO/p-Fe3O4@PANI exhibits excellent electromagnetic wave absorption performance. When the mass ratio of rGO to p-Fe3O4 in the 40 wt% three-phase material is 1:5 and the thickness is 2.5 mm, the minimum RL of rGO/p-Fe3O4@PANI is −41.38 dB at 9.75 GHz and the effective absorption bandwidth to electromagnetic wave reaches 3.08 GHz (from 8.40 to 11.48 GHz), indicating that is a potentially attractive candidate for high efficiency electromagnetic wave absorbers. The combination of the conductive polymer, porous magnetic nanoparticles and rGO improves the impedance matching condition to some extent, and effectively increases the attenuation constant of the material.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Wenxuan Hu,Lu Chen,Miao Du,Yihu Song,Ziliang Wu,Qiang Zheng
In this paper, a facile strategy is developed to fabricate hierarchical NiCo layered double hydroxide (NiCo-LDH) and polyaniline (PANI) composite. A PANI nanolayer firstly uniformly covers the surface of carbon cloth (CC) by electrodeposition , followed by the growth of NiCo-LDH nanoscrolls via a hydrothermal process. The introduction of the PANI nanolayer plays a critical role in realizing the growth of NiCo-LDH nanoscroll, which possesses huge specific surface area and better electrochemical performance. The NiCo-LDH@PANI@CC nanocomposite delivers an excellent specific capacitance of 1835 F g −1 (901C g −1 ) at 1 A g −1 , outstanding rate capability with a capacitance retention of 81% from 1 A g −1 to 10 A g −1 and good cycling ability with a capacitance retention of 78% after 3000 cycles. In addition, the asymmetric supercapacitor assembled by the NiCo-LDH@PANI@CC and active carbon supplies a good energy density of 26.5 Wh kg −1 at a power density of 728.2 W kg −1 and excellent cycling stability with a capacitance retention of 78% after 5000 cycles.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
IONICS
·
2018
·Vol. 24
·期 11
·3367-3373
·
IF 2.347
Zhang Rui-Tao,Han Jia-Jun,Liu Pan,Bao Chang-Yuan,Cheng Jin-Ning
Graphene oxide (GO) was synthesized by an improved Hummers method and then reduced with NaBH 4 ; GO became rGO with regular layered structure. Polyaniline (PANI)/rGO composite was prepared by a adsorption double oxidant method with rGO as a template. Some physical characterization methods (Fourier transform infrared spectroscopy analysis, X-ray diffraction, scanning electron microscope, and transmission electron microscope) were used to analyze the morphology and crystallinity of the composite. The electrochemical properties were characterized by cyclic voltammetry, impedance spectroscopy, galvanostatic charge/discharge, and rate capability. The first discharge specific capacity of the rPANI/rGO and PANI/rGO was 181.2 and 147.8 mAh/g. After 100 cycles, the capacity retention rate was still 90.2 and 88.9% separately, and the coulombic efficiency of batteries is close to 100%. These results demonstrate the composite has exciting potentials for the cathode material of lithium-ion battery.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2018
·Vol. 30
·期 1
·292-301
·
IF 2.324
Yang Jiling,Ye Mingquan,Han Aijun,Zhang Yu,Zhang Kui
As an ideal electromagnetic (EM) wave absorber, it is prone to possess lightweight, thin matching thickness, broad absorption bandwidth and strong absorption performance. In this work, MoS 2 –PANI composites were prepared by situ chemical oxidative polymerization method, and the crystal structure, morphology, composition and EM properties were characterized. The microwave absorption properties of MoS 2 –PANI composites could be tuned by changing the PANI content to reach the best impedance match. The minimum reflection loss (RL) value of MoS 2 –PANI was − 40.79 dB at 14.01 GHz with the thickness of 2.0 mm, and the maximum effective absorption bandwidth was 5.02 GHz ranging from 11.88 to 16.90 GHz with a thickness of 2.0 mm. Moreover, the RL value of MoS 2 –PANI composites could reach under − 10 dB in a wide frequency range of 4.74–18 GHz with a thickness of 1.5–4.5 mm. In particular, the 3 mm wave attenuation properties of MoS 2 –PANI composites were investigated for the first time, and the maximum attenuation value reached 15.45 dB. As a result, MoS 2 –PANI composites are promising to be excellent EM wave absorption materials in broadband.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Xiang Luo,Haifeng Li,Jihui Sun,Xutao Yan,Yijian Liu,Li Sun,Meijie Zhang
The carbon source, graphitization degree and microstructure of pure carbon materials have strong effects on their electrical conductivity , impedance matching and electromagnetic (EM) waves absorption properties. A novel microstructure nitrogenous porous carbon (NPC) material with excellent EM waves absorption properties was synthesized by carbonizing polyaniline (PANI) fiber clusters. When the filler loading is only 30 wt %, the widest effective absorption bandwidth ( EAB ) reached 5.5 GHz from 12.41 GHz to 17.91 GHz (almost the entire Ku band) with a thickness of only 1.5 mm and the EAB /thickness was up to 3.67 GHz/mm, which is not inferior or even better than many composites with complex structure. The nitrogen atoms in NPC lattice reduced its graphitization degree. The synergistic effect of optimized impedance matching and enhanced dielectric loss improved EM waves absorption of NPC. The EM waves dissipation mechanisms of NPC material mainly include dipole polarization, interface polarization and conductance loss. The synthesized NPC is a potential EM waves absorption material.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2021
·
IF 7.664
Kangqi Chang,Le Li,Chao Zhang,Piming Ma,Weifu Dong,Yunpeng Huang,Tianxi Liu
Advanced pressure sensors featuring high compressibility , high sensitivity, fast response time, and superior stability have attracted tremendous research attention because of their potential applications in artificial intelligence technology and wearable electronics. In this work, a robust sponge-like piezoresistive pressure sensor with remarkable elasticity and high sensitivity was fabricated by anchoring perpendicularly oriented MXene flakes on polyaniline (PANI) wrapped polymeric sponge via freeze-drying-assisted depositing strategy. Owing to the stable 3D conducting networks provided by PANI sponge and the intimate electrical contact between erected MXene flakes upon subtle deformation, good sensitivity, wide working range, low detection limit, fast response and recovery times, and excellent durability can be simultaneously obtained. Furthermore, various physiological activities (speech recognition, swallowing, joint movement, etc.) can also be detected in real-time and wireless manner by the flexible MXene/PANI sponge sensors, demonstrating their great potential in low-cost and high-performance wearable piezoresistive pressure sensing devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Xueyu Tao,Shifang Ye,Kehu Zhu,Liyang Dou,Peixin Cui,Jie Ma,Cheng Zhao,Xianyong Wei,Litong Guo,Akbar Hojjati-Najafabadi,Peizhong Feng
Although flexible supercapacitors (FSCs) have attracted tremendous attention, synthesis of supercapacitor electrodes that have outstanding electrochemical performance and excellent flexibility remains a continuous dilemma. Herein, conductive polymer composite hydrogels were synthesized via in situ polymerization of aniline (ANI) in a mixture of polyvinyl alcohol (PVA) and carbon nanotubes (CNTs), for which amino trimethylene phosphonic acid (ATMP) was employed as an organic doping acid. The as-prepared polyaniline (PANI)/PVA/ATMP/CNTs (PPAC) composite hydrogel electrodes exhibit a specific capacitance of up to 389.5 F g–1 at 0.5 A g–1, satisfactory long-term cycling stability (83.87% capacitance retained after 10,000 charge/discharge times), and outstanding flexibility (97% capacitance retained over 200 repeated bends), and the incorporation of ATMP enhanced electrochemical performances of PPAC composite hydrogel electrodes. Besides, the synergistic effects offered by high electrical conductivity of CNTs, pseudocapacitance of PANI, and the doping effect of ATMP may further contribute to the excellent electrochemical behavior of hydrogel electrodes. The result of the energy storage mechanism implied that the electrochemical process of the PPAC composite hydrogel electrode involved both diffusion-controlled and surface capacitive processes. The all-hydrogel-state FSC based on the PPAC hydrogel electrode shows a favorable energy density of 12.8 W h kg–1 at 125.0 W kg–1 as well as long-life stability of 77.31% capacitance retention after 10,000 charge/discharge cycles. This work is promising for the preparation of high-performance composite hydrogel electrodes for wearable and flexible energy storage devices.
研究领域:
材料科学
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能源存储技术
·
电化学
✓ 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）