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Lei Y, Qiu Z, Liu J, Li D, Tan N, Liu T, Zhang Y, Chang X, Gu Y, Yin Y. Effect of Conducting Polyaniline/Graphene Nanosheet Content on the Corrosion Behavior of Zinc-Rich Epoxy Primers in 3.5% NaCl Solution. Polymers (Basel) 2019; 11:polym11050850. [PMID: 31083352 PMCID: PMC6572091 DOI: 10.3390/polym11050850] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/04/2019] [Accepted: 05/06/2019] [Indexed: 11/16/2022] Open
Abstract
The corrosion behavior of zinc-rich epoxy primers or paints (ZRPs) with different conducting polyaniline-grafted graphene (PANI/Gr) contents was investigated. Conductivity of the formed PANI/Gr nanosheets was significantly improved by employing the Gr as the inner template to synthesize the PANI. The protective properties and electrochemical behavior of coatings with artificial defects were investigated by monitoring the free corrosion potential versus time and by using localized electrochemical impedance spectroscopy (LEIS). A synergetic enhancement of the physical barrier role of the coating and the zinc sacrificial cathodic protection was achieved in the case of ZRP including PANI/Gr nanosheets. In addition, the ZRP mixed with the PANI/Gr at a content of 0.6% exhibited the best anticorrosion performance across the range of investigated PANI/Gr contents.
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Affiliation(s)
- Yanhua Lei
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
- Beijing Key Laboratory of Pipeline Critical Technology and Equipment for Deepwater Oil & Gas Development, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
| | - Zhichao Qiu
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
| | - Jiurong Liu
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
| | - Dongdong Li
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
| | - Ning Tan
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
| | - Tao Liu
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
| | - Yuliang Zhang
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
| | - Xueting Chang
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
| | - Yanhong Gu
- Beijing Key Laboratory of Pipeline Critical Technology and Equipment for Deepwater Oil & Gas Development, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
| | - Yansheng Yin
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
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52
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Mota ML, Carrillo A, Verdugo AJ, Olivas A, Guerrero JM, De la Cruz EC, Noriega Ramírez N. Synthesis and Novel Purification Process of PANI and PANI/AgNPs Composite. Molecules 2019; 24:E1621. [PMID: 31022898 PMCID: PMC6514870 DOI: 10.3390/molecules24081621] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 04/13/2019] [Accepted: 04/18/2019] [Indexed: 12/03/2022] Open
Abstract
In this work, polyaniline (PANI) is synthesized via oxidative polymerization of aniline and purified using organic solvents where the emeraldine phase is isolated by employing a phase separation system. The above contributes to the increase in the percentage yield compared to previous works and the possibility of being used as a single phase. In addition, the PANI/AgNPs composite is prepared in situ at the polymerization of aniline, adding silver nitrate and glycine to create the AgNPs inside the PANI matrix by controlling the pH, temperature, time of reaction and incorporating a new purification technique.
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Affiliation(s)
- María L Mota
- CONACYT-Institute of Engineering and Technology, Autonomous University of Ciudad Juárez, Av. Del Charro 610, Ciudad Juárez, CHIH, C.P. 32310, Mexico.
- Institute of Engineering and Technology, Autonomous University of Ciudad Juárez, Av. Del Charro 610, Ciudad Juárez, CHIH, C.P. 32310, Mexico.
| | - Amanda Carrillo
- Institute of Engineering and Technology, Autonomous University of Ciudad Juárez, Av. Del Charro 610, Ciudad Juárez, CHIH, C.P. 32310, Mexico.
| | - Ana J Verdugo
- Institute of Engineering and Technology, Autonomous University of Ciudad Juárez, Av. Del Charro 610, Ciudad Juárez, CHIH, C.P. 32310, Mexico.
| | - Amelia Olivas
- Center of Nanoscience and Nanotechnology-UNAM, BC, C.P. 22860, Mexico.
| | - Jorge M Guerrero
- Center of Advanced Materials Research, S.C., Alianza Norte 202, Research and Technological Innovation Park, Apodaca, NL, C.P. 66600, Mexico.
| | - Edna C De la Cruz
- CONACYT-Center of Research in Applied Science and Advanced Technology, Altamira Unit, Tamaulipas, C.P. 89600, Mexico.
| | - Natalia Noriega Ramírez
- Institute of Engineering and Technology, Autonomous University of Ciudad Juárez, Av. Del Charro 610, Ciudad Juárez, CHIH, C.P. 32310, Mexico.
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Pandey A, Sharma S, Jain R. Voltammetric sensor for the monitoring of hazardous herbicide triclopyr (TCP). J Hazard Mater 2019; 367:246-255. [PMID: 30594724 DOI: 10.1016/j.jhazmat.2018.12.083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 06/09/2023]
Abstract
The herbicide Triclopyr (TCP) is widely applied to minimize the growth of woody plants. Monitoring of TCP is of major environmental concern due to its adverse impact on aquatic organisms, soils and animals. Electrochemical behavior of TCP was investigated at C70 decorated PANI modified glassy carbon sensor (PANI/C70/GC). The experimental parameters, such as concentration, pH, amplitude, frequency, deposition potential were optimized. The modified sensor exhibited an excellent catalytic response towards the reduction of TCP with a well-defined reduction peak at 1.72 V. The developed sensor was characterized by scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD) and electrochemical impedance spectroscopy (EIS). The electrochemical measurements were carried out using square wave (SWV) and cyclic voltammetry (CV). The modified sensor exhibited linear calibration curve for TCP over a concentration range of 10 ngmL-1-100 ngmL-1 with detection limit of 1.9 ngmL-1. The developed sensor could detect TCP efficiently without any interference from the common metabolites. The voltammetric procedure was applied successfully to real sample analysis with high sensitivity and good selectivity.
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Affiliation(s)
- Annu Pandey
- School of Studies in Chemistry, Jiwaji University, Gwalior, 474011, India.
| | - Swati Sharma
- School of Studies in Chemistry, Jiwaji University, Gwalior, 474011, India
| | - Rajeev Jain
- School of Studies in Chemistry, Jiwaji University, Gwalior, 474011, India
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54
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Guan X, Kong D, Huang Q, Cao L, Zhang P, Lin H, Lin Z, Yuan H. In Situ Growth of a High-Performance All-Solid-State Electrode for Flexible Supercapacitors Based on a PANI/CNT/EVA Composite. Polymers (Basel) 2019; 11:polym11010178. [PMID: 30960162 PMCID: PMC6401819 DOI: 10.3390/polym11010178] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/13/2019] [Accepted: 01/14/2019] [Indexed: 11/20/2022] Open
Abstract
For the development of light, flexible, and wearable electronic devices, it is crucial to develop energy storage components combining high capacity and flexibility. Herein, an all-solid-state supercapacitor is prepared through an in situ growth method. The electrode contains polyaniline deposited on a carbon nanotube and a poly (ethylene-co-vinyl acetate) film. The hybrid electrode exhibits excellent mechanical and electrochemical performance. The optimized few-layer polyaniline wrapping layer provides a conductive network that effectively enhances the cycling stability, as 66.4% of the starting capacitance is maintained after 3000 charge/discharge cycles. Furthermore, the polyaniline (PANI)-50 displays the highest areal energy density of 83.6 mWh·cm−2, with an areal power density of 1000 mW·cm−2, and a high areal capacity of 620 mF cm−2. The assembled device delivers a high areal capacity (192.3 mF·cm−2) at the current density of 0.1 mA·cm−2, a high areal energy (26.7 mWh·cm−2) at the power density of 100 mW·cm−2, and shows no significant decrease in the performance with a bending angle of 180°. This unique flexible supercapacitor thus exhibits great potential for wearable electronics.
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Affiliation(s)
- Xipeng Guan
- School of Mechanics and Construction Engineering, Jinan University, Guangzhou 510632, China.
- Institute of Advances Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
| | - Debin Kong
- Institute of Advances Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
| | - Qin Huang
- Institute of Advances Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
| | - Lin Cao
- Institute of Advances Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
| | - Peng Zhang
- Institute of Advances Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
| | - Huaijun Lin
- Institute of Advances Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
| | - Zhidan Lin
- Institute of Advances Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China.
| | - Hong Yuan
- School of Mechanics and Construction Engineering, Jinan University, Guangzhou 510632, China.
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55
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Abstract
Polyaniline (PANI) functionalized multiwall carbon nanotubes (MWCNTs) were prepared via in situ chemical polymerization process of aniline, in which MWCNTs were spray coated on the fabric for wearable ammonia sensor. Structural, morphological, thermal properties and wettability were analyzed by scanning electron microscope, X-ray diffraction, Raman analysis and contact angle measurement. No substantial change in base resistance of MWCNTs/PANI fabric sensor was observed for a wide range of bending (from 90° to 270°) shows excellent wearability. The sensors were exposed to 20-100 ppm ammonia vapor at room temperature. It was observed that the sensing response of PANI coated MWCNTs was enhanced than MWCNTs and PANI. The sensor has the capability to detect ammonia with high sensitivity (92% for100 ppm), excellent selectivity quick response (9 s), and recovery time (30 s). The lower detection limit (LOD) for the MWCNTs/PANI fabric sensor was found to be 200 ppb. The influence of humidity on sensing parameters was studied. Sensing response and resistance of sensor have shown excellent stability after one month. We observed that PANI have a dual role in enhancing flexibility as well as improve the sensor performance toward ammonia. The results reveal the potential application of fabric based sensor for monitoring NH3 gas under ambient conditions.
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56
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Aryasomayajula A, Wojnas C, Divigalpitiya R, Selvaganapathy PR, Kruse P. Robust Chemiresistive Sensor for Continuous Monitoring of Free Chlorine Using Graphene-like Carbon. ACS Sens 2018; 3:451-457. [PMID: 29369621 DOI: 10.1021/acssensors.7b00884] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Free chlorine is widely used in industry as a bleaching and oxidizing agent. Its concentration is tightly monitored to avoid environmental contamination and deleterious human health effects. Here, we demonstrate a solid state chemiresistive sensor using graphene like carbon (GLC) to detect free chlorine in water. A 15-20 nm thick GLC layer on a PET substrate was modified with a redox-active aniline oligomer (phenyl-capped aniline tetramer, PCAT) to increase sensitivity, improve selectivity, and impart fouling resistance. Both the bare GLC sensor and the PCAT-modified GLC sensor can detect free chlorine continuously and, unlike previous chemiresistive sensors, do not require a reset. The PCAT-modified sensor showed a linear response with a slope of 13.89 (mg/L)-1 to free chlorine concentrations between 0.2 and 0.8 mg/L which is relevant for free chlorine monitoring for drinking water and wastewater applications. The PCAT-modified GLC sensors were found to be selective and showed less than 0.5% change in current in response to species such as nitrates, phosphates and sulfates in water. They also were resistant to fouling from organic material and showed only a 2% loss in signal. Tap water samples from residential area were tested using this sensor which showed good agreement with standard colorimetric measurement methods. The GLC and PCAT-GLC sensors show high sensitivity and excellent selectivity to free chlorine and can be used for continuous automated monitoring of free chlorine.
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Zhang R, Liao Y, Ye S, Zhu Z, Qian J. Novel ternary nanocomposites of MWCNTs/ PANI/MoS 2: preparation, characterization and enhanced electrochemical capacitance. R Soc Open Sci 2018; 5:171365. [PMID: 29410840 PMCID: PMC5792917 DOI: 10.1098/rsos.171365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/21/2017] [Indexed: 06/08/2023]
Abstract
In this work, nanoflower-like MoS2 grown on the surface of multi-walled carbon nanotubes (MWCNTs)/polyaniline (PANI) nano-stem is synthesized via a facile in situ polymerization and hydrothermal method. Such a novel hierarchical structure commendably promotes the contact of PANI and electrolyte for faradaic energy storage. In the meanwhile, the double-layer capacitance of MoS2 is effectively used. The morphology and chemical composition of the as-prepared samples are characterized by scanning and transmission electron microscopies, X-ray diffraction and Fourier transform infrared spectra. The electrochemical performance of the samples is evaluated by cyclic voltammogram and galvanostatic charge-discharge measurements. It is found that the specific capacitance of the obtained MWCNTs/PANI/MoS2 hybrid is 542.56 F g-1 at a current density of 0.5 A g-1. Furthermore, the MWCNTs/PANI/MoS2 hybrid also exhibits good rate capability (62.5% capacity retention at 10 A g-1) and excellent cycling stability (73.71% capacitance retention) over 3000 cycles.
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Affiliation(s)
| | | | | | | | - Jun Qian
- Author for correspondence: Jun Qian e-mail:
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58
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Zhang G, Chen Y, Deng Y, Wang C. A Triblock Copolymer Design Leads to Robust Hybrid Hydrogels for High-Performance Flexible Supercapacitors. ACS Appl Mater Interfaces 2017; 9:36301-36310. [PMID: 28945071 DOI: 10.1021/acsami.7b11572] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report here an intriguing hybrid conductive hydrogel as electrode for high-performance flexible supercapacitor. The key is using a rationally designed water-soluble ABA triblock copolymer (termed as IAOAI) containing a central poly(ethylene oxide) block (A) and terminal poly(acrylamide) (PAAm) block with aniline moieties randomly incorporated (B), which was synthesized by reversible additional fragment transfer polymerization. The subsequent copolymerization of aniline monomers with the terminated aniline moieties on the IAOAI polymer generates a three-dimensional cross-linking hybrid network. The hybrid hydrogel electrode demonstrates robust mechanical flexibility, remarkable electrochemical capacitance (919 F/g), and cyclic stability (90% capacitance retention after 1000 cycles). Moreover, the flexible supercapacitor based on this hybrid hydrogel electrode presents a large specific capacitance (187 F/g), superior to most reported conductive hydrogel-based supercapacitors. With the demonstrated additional favorable cyclic stability and excellent capacitive and rate performance, this hybrid hydrogel-based supercapacitor holds great promise for flexible energy-storage device.
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Affiliation(s)
- Guangzhao Zhang
- Department of Materials Science & Engineering, South University of Science and Technology of China , Shenzhen 518055, China
- Research Institute of Materials Science, South China University of Technology , Guangzhou 510640, China
| | - Yunhua Chen
- School of Materials Science and Engineering, South China University of Technology , Guangzhou 510006, China
| | - Yonghong Deng
- Department of Materials Science & Engineering, South University of Science and Technology of China , Shenzhen 518055, China
| | - Chaoyang Wang
- Research Institute of Materials Science, South China University of Technology , Guangzhou 510640, China
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59
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Mohtasebi A, Broomfield AD, Chowdhury T, Selvaganapathy PR, Kruse P. Reagent-Free Quantification of Aqueous Free Chlorine via Electrical Readout of Colorimetrically Functionalized Pencil Lines. ACS Appl Mater Interfaces 2017; 9:20748-20761. [PMID: 28590737 DOI: 10.1021/acsami.7b03968] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Colorimetric methods are commonly used to quantify free chlorine in drinking water. However, these methods are not suitable for reagent-free, continuous, and autonomous applications. Here, we demonstrate how functionalization of a pencil-drawn film with phenyl-capped aniline tetramer (PCAT) can be used for quantitative electric readout of free chlorine concentrations. The functionalized film can be implemented in a simple fluidic device for continuous sensing of aqueous free chlorine concentrations. The sensor is selective to free chlorine and can undergo a reagent-free reset for further measurements. Our sensor is superior to electrochemical methods in that it does not require a reference electrode. It is capable of quantification of free chlorine in the range of 0.1-12 ppm with higher precision than colorimetric (absorptivity) methods. The interactions of PCAT with the pencil-drawn film upon exposure to hypochlorite were characterized spectroscopically. A previously reported detection mechanism relied on the measurement of a baseline shift to quantify free chlorine concentrations. The new method demonstrated here measures initial spike size upon exposure to free chlorine. It relies on a fast charge built up on the sensor film due to intermittent PCAT salt formation. It has the advantage of being significantly faster than the measurement of baseline shift, but it cannot be used to detect gradual changes in free chlorine concentration without the use of frequent reset pulses. The stability of PCAT was examined in the presence of free chlorine as a function of pH. While most ions commonly present in drinking water do not interfere with the free chlorine detection, other oxidants may contribute to the signal. Our sensor is easy to fabricate and robust, operates reagent-free, and has very low power requirements and is thus suitable for remote deployment.
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Affiliation(s)
- Amirmasoud Mohtasebi
- Department of Chemistry and Chemical Biology, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Andrew D Broomfield
- Department of Chemistry and Chemical Biology, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Tanzina Chowdhury
- Department of Chemistry and Chemical Biology, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - P Ravi Selvaganapathy
- Department of Mechanical Engineering, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Peter Kruse
- Department of Chemistry and Chemical Biology, McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
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Ghosh K, Yue CY, Sk MM, Jena RK. Development of 3D Urchin-Shaped Coaxial Manganese Dioxide@Polyaniline (MnO 2@ PANI) Composite and Self-Assembled 3D Pillared Graphene Foam for Asymmetric All-Solid-State Flexible Supercapacitor Application. ACS Appl Mater Interfaces 2017; 9:15350-15363. [PMID: 28414212 DOI: 10.1021/acsami.6b16406] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We have fabricated high-energy-density all-solid-state flexible asymmetric supercapacitor by using a facile novel 3D hollow urchin-shaped coaxial manganese dioxide@polyaniline (MnO2@PANI) composite as positive electrode and 3D graphene foam (GF) as negative electrode materials with polyvinyl alcohol (PVA)/KOH gel electrolyte. The coaxial MnO2@PANI composite was fabricated by hydrothermal route followed by oxidation without use of an external oxidant. The formation mechanism of the 3D hollow MnO2@PANI composite occurs first by nucleation and growth of the MnO2 crystal species via dissolution-recrystallization and oriented attachment mechanisms followed by the oxidation of aniline monomers on the MnO2 crystalline template. The self-assembled 3D graphene block was synthesized by hydrothermal route using vitamin C as a reducing agent. The microstructures of the composites are analyzed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The morphology is characterized by field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), which clearly showed the formation of urchin-shaped coaxial MnO2@PANI composite. The electrochemical studies are explored by cyclic voltammetry, electrochemical impedance spectrometry, and cyclic charge-discharge tests. The symmetric all-solid-state flexible MnO2@PANI//MnO2@PANI and GF//GF supercapacitors exhibit the specific capacitance of 129.2 and 82.1 F g-1 at 0.5 A/g current density, respectively. The solid-state asymmetric supercapacitor shows higher energy density (37 Wh kg-1) with respect to the solid-state symmetric supercapacitors MnO2@PANI//MnO2@PANI and GF//GF, where the obtained energy density are found to be 17.9 and 11.4 Wh kg-1, respectively, at 0.5 A/g current density. Surprisingly, the asymmetric supercapacitor shows a high energy density of 22.3 Wh kg-1 at a high current density of 5 A g-1. The solid-state asymmetric supercapacitor shows a good cyclic stability in which ∼11% capacitance loss was observed after 5000 cycles.
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Affiliation(s)
- Kalyan Ghosh
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798
| | - Chee Yoon Yue
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798
| | - Md Moniruzzaman Sk
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798
| | - Rajeeb Kumar Jena
- School of Mechanical and Aerospace Engineering and ‡School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798
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61
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Zhang F, Yang C, Gao X, Chen S, Hu Y, Guan H, Ma Y, Zhang J, Zhou H, Qi L. SnO 2@ PANI Core-Shell Nanorod Arrays on 3D Graphite Foam: A High-Performance Integrated Electrode for Lithium-Ion Batteries. ACS Appl Mater Interfaces 2017; 9:9620-9629. [PMID: 28248075 DOI: 10.1021/acsami.6b15880] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The rational design and controllable fabrication of electrode materials with tailored structures and superior performance is highly desirable for the next-generation lithium ion batteries (LIBs). In this work, a novel three-dimensional (3D) graphite foam (GF)@SnO2 nanorod arrays (NRAs)@polyaniline (PANI) hybrid architecture was constructed via solvothermal growth followed by electrochemical deposition. Aligned SnO2 NRAs were uniformly grown on the surface of GF, and a PANI shell with a thickness of ∼40 nm was coated on individual SnO2 nanorods, forming a SnO2@PANI core-shell structure. Benefiting from the synergetic effect of 3D GF with large surface area and high conductivity, SnO2 NRAs offering direct pathways for electrons and lithium ions, and the conductive PANI shell that accommodates the large volume variation of SnO2, the binder-free, integrated GF@SnO2 NRAs@PANI electrode for LIBs exhibited high capacity, excellent rate capability, and good electrochemical stability. A high discharge capacity of 540 mAh g-1 (calculated by the total mass of the electrode) was achieved after 50 cycles at a current density of 500 mA g-1. Moreover, the electrode demonstrated superior rate performance with a discharge capacity of 414 mAh g-1 at a high rate of 3 A g-1.
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Affiliation(s)
- Feng Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Chengkai Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Xin Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Shuai Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Yiran Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Huanqin Guan
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Yurong Ma
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Jin Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Henghui Zhou
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
| | - Limin Qi
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China
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62
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Chen H, Yu P, Zhang Z, Teng F, Zheng L, Hu K, Fang X. Ultrasensitive Self-Powered Solar-Blind Deep-Ultraviolet Photodetector Based on All-Solid-State Polyaniline/MgZnO Bilayer. Small 2016; 12:5809-5816. [PMID: 27594337 DOI: 10.1002/smll.201601913] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/10/2016] [Indexed: 05/14/2023]
Abstract
A high sensitivity self-powered solar-blind photodetector is successfully constructed based on the polyaniline/MgZnO bilayer. The maximum responsivity of the photodetector is 160 μA W-1 at 250 nm under 0 V bias. The device also exhibits a high on/off ratio of ≈104 under 250 nm illumination at a relatively weak light intensity of 130 μW cm-2 without any power.
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Affiliation(s)
- Hongyu Chen
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Pingping Yu
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Zhenzhong Zhang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Feng Teng
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Lingxia Zheng
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Kai Hu
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Xiaosheng Fang
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
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63
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Noh JS. Conductive Elastomers for Stretchable Electronics, Sensors and Energy Harvesters. Polymers (Basel) 2016; 8:E123. [PMID: 30979215 DOI: 10.3390/polym8040123] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 12/02/2022] Open
Abstract
There have been a wide variety of efforts to develop conductive elastomers that satisfy both mechanical stretchability and electrical conductivity, as a response to growing demands on stretchable and wearable devices. This article reviews the important progress in conductive elastomers made in three application fields of stretchable technology: stretchable electronics, stretchable sensors, and stretchable energy harvesters. Diverse combinations of insulating elastomers and non-stretchable conductive materials have been studied to realize optimal conductive elastomers. It is noted that similar material combinations and similar structures have often been employed in different fields of application. In terms of stretchability, cyclic operation, and overall performance, fields such as stretchable conductors and stretchable strain/pressure sensors have achieved great advancement, whereas other fields like stretchable memories and stretchable thermoelectric energy harvesting are in their infancy. It is worth mentioning that there are still obstacles to overcome for the further progress of stretchable technology in the respective fields, which include the simplification of material combination and device structure, securement of reproducibility and reliability, and the establishment of easy fabrication techniques. Through this review article, both the progress and obstacles associated with the respective stretchable technologies will be understood more clearly.
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Jabeen N, Xia Q, Yang M, Xia H. Unique Core-Shell Nanorod Arrays with Polyaniline Deposited into Mesoporous NiCo2O4 Support for High-Performance Supercapacitor Electrodes. ACS Appl Mater Interfaces 2016; 8:6093-6100. [PMID: 26889785 DOI: 10.1021/acsami.6b00207] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Polyaniline (PANI), one of the most attractive conducting polymers for supercapacitors, demonstrates a great potential as high performance pseudocapacitor materials. However, the poor cycle life owing to structural instability remains as the major hurdle for its practical application; hence, making the structure-to-performance design on the PANI-based supercapacitors is highly desirable. In this work, unique core-shell NiCo2O4@PANI nanorod arrays (NRAs) are rationally designed and employed as the electrode material for supercapacitors. With highly porous NiCo2O4 as the conductive core and strain buffer support and nanoscale PANI layer as the electrochemically active component, such a heterostructure achieves favorably high capacitance while maintaining good cycling stability and rate capability. By adopting the optimally uniform and intimate coating of PANI, the fabricated electrode exhibits a high specific capacitance of 901 F g(-1) at 1 A g(-1) in 1 M H2SO4 electrolyte and outstanding capacitance retention of ∼91% after 3000 cycles at a high current density of 10 A g(-1), which is superior to the electrochemical performance of most reported PANI-based pseudocapacitors in literature. The enhanced electrochemical performance demonstrates the complementary contributions of both componential structures in the hybrid electrode design. Also, this work propels a new direction of utilizing porous matrix as the highly effective support for polymers toward efficient energy storage.
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Affiliation(s)
- Nawishta Jabeen
- School of Materials Science and Engineering and ‡HerbertGleiter Institute of Nanoscience, Nanjing University of Science and Technology , Nanjing 210094, China
| | - Qiuying Xia
- School of Materials Science and Engineering and ‡HerbertGleiter Institute of Nanoscience, Nanjing University of Science and Technology , Nanjing 210094, China
| | - Mei Yang
- School of Materials Science and Engineering and ‡HerbertGleiter Institute of Nanoscience, Nanjing University of Science and Technology , Nanjing 210094, China
| | - Hui Xia
- School of Materials Science and Engineering and ‡HerbertGleiter Institute of Nanoscience, Nanjing University of Science and Technology , Nanjing 210094, China
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Melke J, Peter B, Habereder A, Ziegler J, Fasel C, Nefedov A, Sezen H, Wöll C, Ehrenberg H, Roth C. Metal-Support Interactions of Platinum Nanoparticles Decorated N-Doped Carbon Nanofibers for the Oxygen Reduction Reaction. ACS Appl Mater Interfaces 2016; 8:82-90. [PMID: 26673813 DOI: 10.1021/acsami.5b06225] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
N-doped carbon materials are discussed as catalyst supports for the electrochemical oxygen reduction reaction (ORR) in fuel cells. This work deals with the preparation of Pt nanoparticles (NPs) supported on N-doped carbon nanofibers (N-CNF) from a polyaniline nanofiber (PANI NF) precursor, and investigates the ORR activity of the produced materials. Initially, Pt NPs are deposited on PANI NFs. The PANI NF precursors are characterized by near-edge X-ray absorption fine structure (NEXAFS) and transmission electron microscopy (TEM) measurements. It is shown, that in the PANI NF precursor materials electrons from the Pt are being transferred toward the π-conjugated systems of the aromatic ring. This strong interaction of Pt atoms with PANI explains the high dispersion of Pt NPs on the PANI NF. Subsequently, the PANI NF precursors are carbonized at different heat-treatment conditions resulting in structurally different N-CNFs which are characterized by NEXAFS, X-ray photoelectron spectroscopy (XPS) ,and TEM measurements. It is shown that an interaction between N-groups and Pt NPs exists in all investigated N-CNFs. However, the N-CNFs differ in the composition of the N-species and the dispersion of the Pt NPs. A small mean Pt NP size with a narrow size distribution is attributed to the presence of pyrdinic N-groups in the N-CNFs, whereas, for the N-CNFs with mainly graphitic and pyrrolic N-groups, an increase in the average Pt NP size with a broad size distribution is found. The ORR activity in alkaline media investigated by Koutecky-Levich analysis of rotating disk electrode measurements showed a largely enhanced ORR activity in comparison to a conventional Pt/C catalyst.
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Affiliation(s)
- Julia Melke
- Institut für Angewandte Materialien-Energiespeichersysteme (IAM-ESS), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Physikalische und Theoretische Chemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
| | - Benedikt Peter
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Anja Habereder
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Juergen Ziegler
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Claudia Fasel
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Alexei Nefedov
- Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Hikmet Sezen
- Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Elettra-Sincrotrone Trieste S.C.p.A. , Strada Statale 14, 34012 Basovizza, Trieste, Italy
| | - Christof Wöll
- Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Helmut Ehrenberg
- Institut für Angewandte Materialien-Energiespeichersysteme (IAM-ESS), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Christina Roth
- Physikalische und Theoretische Chemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
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Zhu J, Sun W, Yang D, Zhang Y, Hoon HH, Zhang H, Yan Q. Multifunctional Architectures Constructing of PANI Nanoneedle Arrays on MoS2 Thin Nanosheets for High-Energy Supercapacitors. Small 2015; 11:4123-4129. [PMID: 26044446 DOI: 10.1002/smll.201403744] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/18/2015] [Indexed: 06/04/2023]
Abstract
Multifunctional MoS2 @PANI (polyaniline) pseudo-supercapacitor electrodes consisting of MoS2 thin nanosheets and PANI nanoarrays are fabricated via a large-scale approach. The superior capacitance retention is retained up to 91% after 4000 cycles and a high energy density of 106 Wh kg(-1) is delivered at a power density of 106 kW kg(-1) .
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Affiliation(s)
- Jixin Zhu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore, 637819, Singapore
- TUM CREATE, 1 CREATE Way, No. 10-02 CREATE Tower, Singapore, 138602, Singapore
| | - Wenping Sun
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore, 637819, Singapore
| | - Dan Yang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore, 637819, Singapore
- TUM CREATE, 1 CREATE Way, No. 10-02 CREATE Tower, Singapore, 138602, Singapore
| | - Yu Zhang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore, 637819, Singapore
| | - Hng Huey Hoon
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore, 637819, Singapore
| | - Hua Zhang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore, 637819, Singapore
| | - Qingyu Yan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Aveue, Singapore, 637819, Singapore
- TUM CREATE, 1 CREATE Way, No. 10-02 CREATE Tower, Singapore, 138602, Singapore
- Energy Research Institute@NTU, Nanyang Technological University, Singapore, 637459, Singapore
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Pandiyarajan T, Mangalaraja RV, Karthikeyan B. Enhanced ultraviolet fluorescence in surface modified ZnO nanostructures: Effect of PANI. Spectrochim Acta A Mol Biomol Spectrosc 2015; 147:280-285. [PMID: 25847790 DOI: 10.1016/j.saa.2015.02.088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 01/08/2015] [Accepted: 02/19/2015] [Indexed: 06/04/2023]
Abstract
ZnO:polyaniline nanocomposite (ZnO:PANI) films were prepared and their steady state fluorescence and time resolved photoluminescence properties were discussed. X-ray diffraction and infrared spectroscopy analyses confirmed the interaction and formation of ZnO:PANI composite films. Optical absorption spectrum of pure PANI showed two bands at 325 and 625 nm which were ascribed to π→π(∗) transition in the benzoid and exciton formation in the quinoid rings, respectively. Pure ZnO nanoparticles exhibited a band at 369 nm was due to their exciton absorption and the composite films showed a broad band in the visible region and small intensity band at the UV region. Fluorescence spectra showed that the ultra violet emission of ZnO was enhanced about tenfold due to the electron transfer from PANI to ZnO nanoparticles and the suppression of visible emission was attributed to the surface passivation effect. The transfer of electron from PANI to ZnO and its decay dynamics were experimentally analyzed through time resolved fluorescence measurements.
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Affiliation(s)
- T Pandiyarajan
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepcion, Concepcion, Chile
| | - R V Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepcion, Concepcion, Chile
| | - B Karthikeyan
- Department of Physics, National Institute of Technology, Tiruchirappalli 620 015, India.
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