SYNTHETIC METALS
·
2013
·
IF 2.109
Zhaoling Ma,Jinqing Kan
Polyaniline doped with ZnCl 2 (PANI/Zn 2+ ) is prepared by chemical polymerization of aniline in a solution of 0.3 M aniline, 0.3 M zinc chloride, 1.0 M hydrochloric acid and 0.33 M ammonium persulfate at 5 °C. Polyaniline powder is mixed with acetylene black and sodium carboxymethyl cellulose (CMC) to be used as positive electrodes (cathodes) in batteries. Zinc powder is mixed with alloyed powder (65 wt.% Cu, 20 wt.% Sn, 15 wt.% Zn), acetylene black and CMC to obtain the negative electrodes (anodes). The battery electrolyte comprises 1.0 M ZnCl 2 and 2.0 M NH 4 Cl in the aqueous solution of 1-ethyl-3-methylimidazolium ethyl sulfate (EMIES) (water/EMIES, 92:8 by volume). EMIES is added to the battery electrolyte to prevent the formation of Zn dendrites. The assembled cylindrical battery has an open-circuit voltage (OCV) of 1.32 V and the maximum specific capacity of the battery is 89.9 mAh g −1 at pH 4.0.
研究领域:
电化学
·
材料科学
·
电池技术
✓ 已验证
DOI
高影响因子
IONICS
·
2021
·Vol. 27
·期 2
·587-597
·
IF 2.817
Chen Hongyan,Zheng Mengdan,Chen Yue,Xu Yunlong,Zhang Huang
Silicon has been raised as an appealing anode candidate for high-energy lithium-ion batteries. However, the inevitable capacity fade, resulting from the dramatic volume changes over (de)alloying reactions, limits its practical application. Herein, we proposed a conductive polymer of PSSA@PANI as water-soluble binder component for silicon anode in lithium-ion batteries. By PVA hybridization, the as-fabricated nano-Si electrodes using these composite binders exhibit superior reversibility and cycling stability for lithium storage. The improved performance can be attributed to the unique interaction between Si surface and hydrophilic binder, as well as the conductive PSSA@PANI skeleton, which can buffer the Si volume expansion during the lithiation process and facilitate the charge transfer. These results demonstrate an easy and efficient approach to design water-soluble binders for high-performance Si electrodes.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Haipeng Dong,Xiaowei Li,Yu Liu,Wanying Cheng,Xinghua Li,Dongxiao Lu,Changlu Shao,Yichun Liu
Wearable gas sensors have drawn great attention for potential applications in health monitoring, minienvironment detection, and advanced soft electronic noses. However, it still remains a great challenge to simultaneously achieve excellent flexibility, high sensitivity, robustness, and gas permeability, because of the inherent limitation of widely used traditional organic flexible substrates. Herein, an electrospinning polyacrylonitrile (PAN) nanofiber network was designed as a flexible substrate, on which an ultraflexible wearable gas sensor was prepared with in situ assembled polyaniline (PANI) and multiwalled carbon nanotubes (MWCNTs) as a sensitive layer. The unique nanofiber network and strong binding force between substrate and sensing materials endow the wearable gas sensor with excellent robustness, flexibility, and gas permeability. The wearable sensor can maintain stable NH3 sensing performance while sustaining extreme bending and stretching (50% of strain). The Young’s modulus of wearable PAN/MWCNTs/PANI sensor is as low as 18.9 MPa, which is several orders of magnitude smaller than those of reported flexible sensors. The water vapor transmission rate of the sensor is 0.38 g/(cm2 24 h), which enables the wearing comfort of the sensor. Most importantly, due to the effective exposure of sensing sites as well as the heterostructure effect between MWCNTs and PANI, the sensor shows high sensitivity to NH3 at room temperature, and the theoretical limit of detection is as low as 300 ppb. This work provides a new avenue for the realization of reliable and high-performance wearable gas sensors.
研究领域:
材料科学
·
纳米技术
·
可穿戴技术
·
传感器技术
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL LETTERS
·
2023
·
IF 2
Jian Huang,Guolin Yuan,Dongliang Cheng,Fei Xie,Xianru Xia,Xiandong Li,He An,Chunyan Peng
Atherosclerotic coronary heart disease (CHD) is ischemic and a worldwide health issue. The soluble suppression of tumorigenicity 2 (sST2) is a novel biomarker for atherosclerotic coronary heart disease. This work develops an immunosensor with a nanocomposite consisting of polyaniline (PANI) and MXene-Nafion for the specific and sensitive determination of sST2. PANI was first electropolymerized on a glassy carbon electrode (GCE) to enhance electron transfer. Subsequently, MXene-Nafion dispersion was drop cast on the PANI/GCE substrate to further increase the electrical conductivity and immobilize anti-sST2 which captures sST2 for detection. The current response as a function of sST2 concentration was measured by differential pulse voltammetry (DPV). Under the optimal conditions, this immunosensor demonstrates a linear range from 1 pg mL−1 to 1 μg mL−1 and a detection limit of 0.149 pg mL−1. The device offers high sensitivity, excellent specificity, satisfactory reproducibility, good stability, and has significant potential for detecting clinical biomarkers. In addition, the immunosensor is able differentiate between serum of healthy people and CHD patients.
研究领域:
医学诊断
·
生物传感技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yashi Qing,Enming Huang,Lixia Cao,Haigang Gao,Shengyong Zhao,Yanxiang Li,Wangliang Li
The prevalence of 17β-estradiol (E2) in wastewater has attracted widespread attention due to the negative impacts on ecological environments and human health. Nowadays, photocatalysis has been emerged as an efficient technology for E2 containing wastewater treatment. However, traditional powder photocatalysts face challenges such as easy agglomeration, secondary pollution and difficult recovery, limiting their large-scale application. In this study, a photocatalytic PA/C-PANI@BiOBr membrane was fabricated by immobilizing polyaniline (PANI) layer and BiOBr nanosheets on polyamide (PA) membrane through in-situ chemical bath deposition. This process leveraged the strong hydrogen bond interaction between PANI and PA, with the fine PANI fibers providing nucleation sites for the in-situ growth of BiOBr nanosheets. By repeating the immersion process, we controlled variations in the coverage density and morphology of BiOBr on the membrane surface. The PA/C-PANI@BiOBr membrane exhibited outstanding light absorption and photocatalytic performance. Notably, the optimal PA/C-PANI@BiOBr-10 membrane achieved 100 % removal efficiency of 3 mg L −1 E2 within 40 min. In dynamic cyclic experiments, PA/C-PANI@BiOBr-10 membrane maintained stable permeability and high removal efficiency of pollutants. The photocatalytic mechanism underlying these results was elucidated through photoelectric testing and further photocatalytic experiments. Furthermore, the PA/C-PANI/BiOBr-10 membrane demonstrated remarkable durability over multiple consecutive cycles, with E2 removal efficiency remaining above 96.5 % after 5 cycles.
研究领域:
环境科学
·
材料科学
·
化学工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yingyi Ma,Xiaoting Liu,Yu Si,Xinzheng Li,Xinran Li,Jingfang Li
The development of three-dimensional (3D) polyaniline (PANI) architectures offers an effective strategy to address the inherent limitations of PANI-based electrodes, particularly their poor rate capability and cycling stability during repeated charge/discharge processes. However, the intrinsic low processability of PANI hampers the construction of well-defined 3D structures. In this work, we report A green and cost-effective self-assembly method to fabricate a 3D ordered porous PANI framework integrated with carbon nanotubes (CNTs). The synergistic combination of hierarchical porosity and CNT reinforcement effectively suppresses volumetric shrinkage and structural degradation, while facilitating electron transport and ion diffusion. The resulting PANI/CNT porous film exhibits a high specific capacitance of 409.7 F g −1 at 0.25 A g −1 , excellent rate capability (61.4 % retention from 0.25 to 10 A g −1 ), and outstanding cycling stability with 94.6 % retention after 5000 cycles. The electrode also shows robust mechanical and thermal stability under bending and temperature variations. The capacitive performance can be precisely tuned by adjusting the self-assembly parameters. When assembled into a symmetric solid-state supercapacitor (SSC), the device delivers a specific capacitance of 311.3 F g −1 , an energy density of 43.2 Wh kg −1 at 125.0 W kg −1 , and retains 23.0 Wh kg −1 at 4998.0 W kg −1 . The SSCs can be connected in series or parallel to scale output voltage and current, enabling practical applications such as lighting up LEDs. This study presents a scalable strategy for constructing functional 3D PANI-based architectures and provides new insights into the design of high-performance flexible energy storage devices.
研究领域:
材料科学
·
纳米技术
·
储能
·
电化学
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yingying Feng,Haiyan Li,Mingjun Zhang,Jiaying Jin,Beiyao Zhang,Yong Wang,Zhike Li
Benzotriazole-loaded polydopamine/polyaniline (BTA@PDA/PANI) microcapsules are prepared vis the combination of a hard template method and in-situ polymerization. The PDA/PANI hollow microspheres are first prepared using SiO 2 as a hard template and etching them with hydrofluoric acid . The BTA corrosion inhibitor is then loaded into the PDA/PANI hollow microspheres to obtain the BTA@PDA/PANI microcapsules. The mean particle size and shell thickness of the synthesized microcapsules are 8.3 and 2.1 µm, respectively. The load capacity of BTA is above 20 wt%. The corrosion resistance of epoxy coatings with different contents and types of microcapsules is compared by saline immersion and electrochemical impedance tests. A scratched coating with 1 wt% BTA@PDA/PANI microcapsules has the best anti-corrosion effect. The synergistic anticorrosion mechanism of BTA, PDA and PANI is revealed and confirmed.
研究领域:
材料科学
·
腐蚀工程
·
高分子化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xiangxiang Chen,Guoxin Ding,Yan Liu,Yunwang Xing,Weipeng Qi,Guojun Cheng
In answer to the need for materials that absorb electromagnetic waves with great efficiency, this study reports the design and synthesis of a core–shell structured GM@NiFe-LDH@PANI composite. The material exhibits outstanding electromagnetic wave (EMW) absorption performance through multi-component synergy and multi-mechanism coupling. XRD and XPS analyses confirmed the material’s crystalline structure and chemical composition, while SEM images revealed the core–shell morphology, showing NiFe-LDH nanosheets uniformly anchored on glass microspheres (GM) surfaces, forming a hydrangea-like structure. Subsequent incorporation of polyaniline (PANI) further increased the heterojunction interface. Electromagnetic property measurements demonstrated that GNP-2 achieved optimal impedance matching at a thickness of 1.71 mm, resulting in a strong reflection loss of −52.86 dB and an effective absorption bandwidth of 4.72 GHz. The hydrangea-like NiFe-LDH structure enhances magnetic loss and promotes scattering and reflection through its porous framework, intensifying interfacial polarization effects. The conductive PANI shell, with its exposed active sites, facilitates EMW absorption through dipole polarization and conductive loss mechanisms. This core–shell porous design synergistically optimizes dielectric and magnetic losses. This composite material demonstrates considerable potential for electromagnetic compatibility applications in radar stealth, modern communication systems, and renewable energy devices.
研究领域:
材料科学
·
电磁学
·
纳米技术
·
复合材料
·
电磁兼容性
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2023
·
IF 6.9
Menghan Tian,Xueqing Liu,Xungang Diao,Xiaolan Zhong
The conductive polymer polyaniline (PANI) has attracted much attention in the field of electrochromic energy storage device (EESD) due to its rich color changes and good pseudocapacitive properties, however, the operating voltage window and cycling stability of PANI material, as an essential part in the full electrochromic devices , has failed to be fully explored and employed. Herein, we synthesized the PANI and MnO 2 nanocomposite structure via robust one-step electrodeposition approach, forming an intriguing architecture similar to the coral-like nano-porous. The rougher coral-like structure provides a great quantity nano porous ion transport channel, which greatly improves the working voltage range and cycling stability of the electrode, and shows great potential as an anode electrode for EESDs. In addition, we built a complementary full EESD prepared with tungsten oxide (WO 3 ) as the counter electrode, which has both electrochromic and energy storage dual function integration, allowing real-time observation of the EESD operating state based on color change. It can work stably under a large voltage window of -2V–1.5V, with good bistable performance, fast response speed and more than 1000 times electrochemical cycle life. This work provides a new opportunity to design next-generation high-performance and intelligent hybrid energy storage system for consumer electronics.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量存储
·
电致变色器件
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Jingwei Zhou,Limei Zhang,Zhengyang Ji,Ruixiang Xu,Yi Jiang
Wearable smart sensors have broad prospects in medical health and physical exercise. In this study, the core–shell conductive fiber membrane was prepared by adding multiwalled carbon nanotubes during polymerization of aniline on spun fibers. In comparison to the conventionally utilized polymerized aniline, the integration of carbon nanotube particulates enhances the conductivity and surface area, provides more aniline polymerization sites, and simultaneously increases the stability of the composite film. The pressure sensor has a sensitivity of 61.12, 40.32, and 23.17 kPa −1 in the range of 0–7.1 kPa, 7.1–11.1 kPa, and 11.1–19.54 kPa. In addition, it has a fast response time (loading time of 120 ms and unloading time of only 22 ms) and exhibits excellent cyclic stability through numerous loading–unloading cycles. These properties enable the sensor to be applied to real-time monitoring of human sports health, such as knee and elbow bending, mouse clicking, beaker holding, and so on. This research method provides a new strategy and technology for conducting polymers as materials for flexible electronic equipment.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
可穿戴技术
·
传感器技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Peng Wang,Chengli Tang,Libing Zhang,Yebo Lu,Fengli Huang
Ammonia (NH 3 ) gas is regarded as a biomarker for clinical diagnosis of various diseases and a potential indicator for the spoilage of protein-rich foods. The acuate detection of the ammonia gas concentration depend on reliable gas sensor. In this paper, flexible room temperature ammonia gas sensor based on hierarchical Au/PANI/WS 2 ternary composite was successfully prepared by in-situ polymerization, reduction and drop-coating process. The Au/PANI/WS 2 -based ammonia sensor was tested for its room temperature sensing property including response value, response/recovery time, selectivity, and long-term stability. The effects of flexible state, humidity and operating temperature on the sensor response were also investigated. The 0D/1D/2D Au/PANI/WS 2 -based sensor showed significantly enhanced ammonia sensing property both in response and response/recovery time as compared to that of pristine WS 2 . Gas sensing mechanism of the prepared sensor was investigated by complex impedance spectroscopy and in-situ fourier transform infrared spectroscopy analysis. Besides, the sensor was proved for its practical usability in seafood spoilage detection and warning. The construction of multidimensional materials into hierarchical structure may provide an instructive way for the sensibilization of layered two-dimensional nanomaterial of WS 2.
研究领域:
材料科学
·
纳米技术
·
传感器技术
·
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 9
·4277-4287
·
IF 3.3
Jiaxin Mou,Yunlan Xu,Dengjie Zhong,Haixing Chang,Jun Li,Chunzi Xu,Hui Wang,Hongyu Shen
To expand the optical absorption range and charge transfer efficiency of photoanode, the ZnIn2S4/PANI/TiO2/Ti photoanode was developed using a coating method and applied in a photocatalytic fuel cell (PFC) system for the removal of organic pollutants and chemical energy recovery. The prepared photoanode obtained a maximum photocurrent density of 4.19 mA cm−2 (1.2 V vs. SCE). The rhodamine B (RhB) removal efficiency, maximum power density (Pmax) and short-circuit current density (Jsc) of PFC constructed with the ZnIn2S4/PANI/TiO2/Ti composite photoanode and Cu cathode were 93.80% (1 h), 18.83 μW cm−2 and 0.26 mA cm−2, respectively. The improved photocatalytic activity of PFC was due to the outstanding photoelectric properties of the ZnIn2S4/PANI hybrid material, in which PANI, as a photosensitizer, promoted the absorption of visible light by the photoanode. The photoexcited electrons of ZnIn2S4 and PANI tend to be directly transferred to the CB of TiO2, while holes accumulate in the VB of PANI to participate in the oxidation reaction. The synergistic effect accelerates the separation of photogenerated electron–hole pairs and improves the photoelectric conversion efficiency of PFC.
研究领域:
环境科学
·
材料科学
·
化学工程
·
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）