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Shao G, Jing C, Ma Z, Li Y, Dang W, Guo D, Wu M, Liu S, Zhang X, He K, Yuan Y, Luo J, Dai S, Xu J, Zhou Z. Dynamic coordination engineering of 2D PhenPtCl 2 nanosheets for superior hydrogen evolution. Nat Commun 2024; 15:385. [PMID: 38195636 PMCID: PMC10776781 DOI: 10.1038/s41467-024-44717-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/02/2024] [Indexed: 01/11/2024] Open
Abstract
Exploring the dynamic structural evolution of electrocatalysts during reactions represents a fundamental objective in the realm of electrocatalytic mechanism research. In pursuit of this objective, we synthesized PhenPtCl2 nanosheets, revealing a N2-Pt-Cl2 coordination structure through various characterization techniques. Remarkably, the electrocatalytic performance of these PhenPtCl2 nanosheets for hydrogen evolution reaction (HER) surpasses that of the commercial Pt/C catalyst across the entire pH range. Furthermore, our discovery of the dynamic coordination changes occurring in the N2-Pt-Cl2 active sites during the electrocatalytic process, as clarified through in situ Raman and X-ray photoelectron spectroscopy, is particularly noteworthy. These changes transition from Phen-Pt-Cl2 to Phen-Pt-Cl and ultimately to Phen-Pt. The Phen-Pt intermediate plays a pivotal role in the electrocatalytic HER, dynamically coordinating with Cl- ions in the electrolyte. Additionally, the unsaturated, two-coordinated Pt within Phen-Pt provides additional space and electrons to enhance both H+ adsorption and H2 evolution. This research illuminates the intricate dynamic coordination evolution and structural adaptability of PhenPtCl2 nanosheets, firmly establishing them as a promising candidate for efficient and tunable electrocatalysts.
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Affiliation(s)
- Gonglei Shao
- Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, PR China.
| | - Changfei Jing
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, PR China
- Feringa Nobel Prize Scientist Joint Research Centre, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Zhinan Ma
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China
| | - Yuanyuan Li
- School of Sciences, Henan University of Technology, Zhengzhou, 450001, PR China
| | - Weiqi Dang
- National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, PR China
| | - Dong Guo
- Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Manman Wu
- Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Song Liu
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Xu Zhang
- Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Kun He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, PR China
| | - Yifei Yuan
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, PR China
| | - Jun Luo
- ShenSi Lab, Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Longhua District, Shenzhen, 518110, PR China
| | - Sheng Dai
- Feringa Nobel Prize Scientist Joint Research Centre, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Jie Xu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, PR China.
| | - Zhen Zhou
- Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, PR China.
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Wang P, Li J, Xue W, Ci W, Jiang F, Shi L, Zhou F, Zhou P, Xu X. Integrated In-Memory Sensor and Computing of Artificial Vision Based on Full-vdW Optoelectronic Ferroelectric Field-Effect Transistor. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305679. [PMID: 38029338 PMCID: PMC10797471 DOI: 10.1002/advs.202305679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/01/2023] [Indexed: 12/01/2023]
Abstract
The development and application of artificial intelligence have led to the exploitation of low-power and compact intelligent information-processing systems integrated with sensing, memory, and neuromorphic computing functions. The 2D van der Waals (vdW) materials with abundant reservoirs for arbitrary stacking based on functions and enabling continued device downscaling offer an attractive alternative for continuously promoting artificial intelligence. In this study, full 2D SnS2 /h-BN/CuInP2 S6 (CIPS)-based ferroelectric field-effect transistors (Fe-FETs) and utilized light-induced ferroelectric polarization reversal to achieve excellent memory properties and multi-functional sensing-memory-computing vision simulations are designed. The device exhibits a high on/off current ratio of over 105 , long retention time (>104 s), stable cyclic endurance (>350 cycles), and 128 multilevel current states (7-bit). In addition, fundamental synaptic plasticity characteristics are emulated including paired-pulse facilitation (PPF), short-term plasticity (STP), long-term plasticity (LTP), long-term potentiation, and long-term depression. A ferroelectric optoelectronic reservoir computing system for the Modified National Institute of Standards and Technology (MNIST) handwritten digital recognition achieved a high accuracy of 93.62%. Furthermore, retina-like light adaptation and Pavlovian conditioning are successfully mimicked. These results provide a strategy for developing a multilevel memory and novel neuromorphic vision systems with integrated sensing-memory-processing.
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Affiliation(s)
- Peng Wang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030031China
| | - Jie Li
- School of MicroelectronicsSouthern University of Science and TechnologyShenzhen518000China
| | - Wuhong Xue
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030031China
| | - Wenjuan Ci
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030031China
| | - Fengxian Jiang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030031China
| | - Lei Shi
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030031China
| | - Feichi Zhou
- School of MicroelectronicsSouthern University of Science and TechnologyShenzhen518000China
| | - Peng Zhou
- ASIC & System State Key Lab School of MicroelectronicsFudan UniversityShanghai200433China
| | - Xiaohong Xu
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030031China
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Xu Q, Wu Q, Wang C, Zhang X, Cai Z, Lin L, Gu X, Ostrikov KK, Nan H, Xiao S. High-performance multilayer WSe 2/SnS 2p-n heterojunction photodetectors by two step confined space chemical vapor deposition. NANOTECHNOLOGY 2023; 34:505604. [PMID: 37748477 DOI: 10.1088/1361-6528/acfcc3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/25/2023] [Indexed: 09/27/2023]
Abstract
Two-dimensional (2D) p-n heterojunctions have attracted great attention due to their outstanding properties in electronic and optoelectronic devices, especially in photodetectors. Various types of heterojunctions have been constituted by mechanical exfoliation and stacking. However, achieving controlled growth of heterojunction structures remains a tremendous challenge. Here, we employed a two-step KI-assisted confined-space chemical vapor deposition method to prepare multilayer WSe2/SnS2p-n heterojunctions. Optical characterization results revealed that the prepared WSe2/SnS2vertical heterostructures have clear interfaces as well as vertical heterostructures. The electrical and optoelectronic properties were investigated by constructing the corresponding heterojunction devices, which exhibited good rectification characteristics and obtained a high detectivity of 7.85 × 1012Jones and a photoresponse of 227.3 A W-1under visible light irradiation, as well as a fast rise/fall time of 166/440μs. These remarkable performances are likely attributed to the ultra-low dark current generated in the depletion region at the junction and the high direct tunneling current during illumination. This work demonstrates the value of multilayer WSe2/SnS2heterojunctions for applications in high-performance photodetectors.
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Affiliation(s)
- Qilei Xu
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Qianqian Wu
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Chenglin Wang
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Xiumei Zhang
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Zhengyang Cai
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Liangliang Lin
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Xiaofeng Gu
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Kostya Ken Ostrikov
- School of Physics and Chemistry and QUT Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia
| | - Haiyan Nan
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Shaoqing Xiao
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
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Wang J, Bagheri Tagani M, Zhang L, Xia Y, Wu Q, Li B, Tian Y, Yin LJ, Zhang L, Qin Z. Realization of black phosphorus-like PbSe monolayer on Au(111) via epitaxial growth. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:485002. [PMID: 37586387 DOI: 10.1088/1361-648x/acf107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/16/2023] [Indexed: 08/18/2023]
Abstract
Lead selenide (PbSe) has been attracted a lot attention in fundamental research and industrial applications due to its excellent infrared optical and thermoelectric properties, toward reaching the two-dimensional limit. Herein, we realize the black phosphorus-like PbSe (α-phase PbSe) monolayer on Au(111) via epitaxial growth, where a characteristic rectangular superlattice of 5 Å × 9 Å corresponding to 1 × 2 reconstruction with respect to the pristine ofα-phase PbSe is observed by scanning tunneling microscopy. Corresponding density functional theory calculation confirmed the reconstruction and revealed the driven mechanism, the coupling between monolayer PbSe and Au(111) substrate. The metallic feature of differential conductance spectra as well as the transition of the density of states from semiconductor to metal further verified such coupling. As the unique anisotropic structure, our study provides a pathway towards the synthesis of BP-PbSe monolayer. In addition, it builds up an ideal platform for studying fundamental physics and also excellent prospects in PbSe-based device applications.
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Affiliation(s)
- Jing Wang
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | | | - Li Zhang
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Yu Xia
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Qilong Wu
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Bo Li
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Yuan Tian
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Long-Jing Yin
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Lijie Zhang
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Zhihui Qin
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
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Singh M, Nguyen TT, P MA, Ngo QP, Kim DH, Kim NH, Lee JH. Metallic Metastable Hybrid 1T'/1T Phase Triggered Co,PSnS 2 Nanosheets for High Efficiency Trifunctional Electrocatalyst. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206726. [PMID: 36599644 DOI: 10.1002/smll.202206726] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/29/2022] [Indexed: 06/17/2023]
Abstract
The development of trifunctional electrocatalyst for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) with deeply understanding the mechanism to enhance the electrochemical performance is still a challenging task. In this work, the distorted metastable hybrid-phase induced 1T'/1T Co,PSnS2 nanosheets on carbon cloth (1T'/1T Co,PSnS2 @CC) is prepared and examined. The density functional theoretical (DFT) calculation suggests that the distorted 1T'/1T Co,PSnS2 can provide excellent conductivity and strong hydrogen adsorption ability. The electronic structure tuning and enhancement mechanism of electrochemical performance are investigated and discussed. The optimal 1T'/1T Co,PSnS2 @CC catalyst exhibits low overpotential of ≈94 and 219.7 mV at 10 mA cm-2 for HER and OER, respectively. Remarkably, the catalyst exhibits exceptional ORR activity with small onset potential value (≈0.94 V) and half-wave potential (≈0.87 V). Most significantly, the 1T'/1T Co,PSnS2 ||Co,PSnS2 electrolyzer required small cell voltages of ≈1.53, 1.70, and 1.82 V at 10, 100, and 400 mA cm-2 , respectively, which are better than those of state-of-the-art Pt-C||RuO2 (≈1.56 and 1.84 V at 10 and 100 mA cm-2 ). The present study suggests a new approach for the preparation of large-scalable, high performance hierarchical 3D next-generation trifunctional electrocatalysts.
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Affiliation(s)
- Manjinder Singh
- Advanced Materials Institute of Nano Convergence Technology (BK21 FOUR), Department of Nano Convergence Technology, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Thanh Tuan Nguyen
- Advanced Materials Institute of Nano Convergence Technology (BK21 FOUR), Department of Nano Convergence Technology, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Muthu Austeria P
- Division of Science Education, Graduate School of Department of Energy Storage/Conversion Engineering, Jeonbuk National University Jeonju, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Quynh Phuong Ngo
- Advanced Materials Institute of Nano Convergence Technology (BK21 FOUR), Department of Nano Convergence Technology, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Do Hwan Kim
- Division of Science Education, Graduate School of Department of Energy Storage/Conversion Engineering, Jeonbuk National University Jeonju, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Nam Hoon Kim
- Advanced Materials Institute of Nano Convergence Technology (BK21 FOUR), Department of Nano Convergence Technology, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - Joong Hee Lee
- Advanced Materials Institute of Nano Convergence Technology (BK21 FOUR), Department of Nano Convergence Technology, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
- Carbon Composite Research Centre, Department of Polymer Nano Science and Technology, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea
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Hou ZL, Ma X, Zhang J, Li C, Wang Y, Cao M. Fascinating Electrical Transport Behavior of Topological Insulator Bi 2 Te 3 Nanorods: Toward Electrically Responsive Smart Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2205624. [PMID: 36328711 DOI: 10.1002/smll.202205624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Electrical conductivity and dielectric parameters are general inherent features of materials. Controlling these characteristics through applied bias will add a new dimension to regulate the dynamic response of smart materials. Here, a fascinating electrical transport behavior is observed in topological insulator (TI) Bi2 Te3 nanorods, which will play a vital role in intelligent materials or devices as a unit for information reception, processing or feedback. The Bi2 Te3 nanorod aggregates exhibit a monotonic resistance response to voltage, with observed four-fold change of electrical conductivity in a small range electric field of 1 V mm-1 . The dielectric constant and dielectric loss of Bi2 Te3 nanorod composites also show strong dependences on bias voltage due to the unique electrical transport characteristics. The unique voltage-controlled electrical responses are attributed to the change of Fermi levels within the band structure of disordered TI nanorods, which are non-parallel to the applied electric field. The excellent controllable inherent characteristics through electric field endows Bi2 Te3 nanomaterials bright prospects for applications in smart devices and resistive random access memories.
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Affiliation(s)
- Zhi-Ling Hou
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiaomei Ma
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Junying Zhang
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Chuanjian Li
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yilin Wang
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Maosheng Cao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
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Cui Z, He SA, Zhu J, Gao M, Wang H, Zhang H, Zou R. Tailoring the Void Space Using Nanoreactors on Carbon Fibers to Confine SnS 2 Nanosheets for Ultrastable Lithium/Sodium-Ion Batteries. SMALL METHODS 2022; 6:e2101484. [PMID: 35142111 DOI: 10.1002/smtd.202101484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/18/2022] [Indexed: 06/14/2023]
Abstract
Herein, a rational design of SnS2 nanosheets confined into bubble-like carbon nanoreactors anchored on N,S doped carbon nanofibers (SnS2 @C/CNF) is proposed to prepare the self-standing electrodes, which provides tunable void space on carbon fibers for the first time by introducing hollow carbon nanoreactors. The SnS2 @C/CNF provides the stable support with greatly enhanced ion and electron transport, alleviates aggregation and volume expansion of SnS2 nanosheets, and promotes the formation of abundant exposed edges and active sites. The volume balance between SnS2 nanosheets and hollow carbon nanoreactors is reached to accommodate the expansion of SnS2 during cycles by controlling the thickness of SnO2 shells, which achieves the best space utilization. The doping of N,S elements enhances the wettability of the carbon nanofiber matrix to electrolyte and Li ions and further improves the electrical conductivity of the whole electrode. Thus, the SnS2 @C/CNF benefits greatly in structural stability and pseudocapacitive capacity for improved lithium/sodium storage performance. As a result of these improvements, the self-standing SnS2 @C/CNF film electrodes exhibit the highly stable capacity of 964.8 and 767.6 mAh g-1 at 0.2 A g-1 , and excellent capacity retention of 87.4% and 82.4% after 1000 cycles at high current density for lithium-ion batteries and sodium-ion batteries, respectively.
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Affiliation(s)
- Zhe Cui
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Shu-Ang He
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Jinqi Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Mengluan Gao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hao Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hao Zhang
- Research and Development Department of Shenzhen Zhenli Liquid Separation Technology Co., Ltd., Shenzhen, 518118, China
| | - Rujia Zou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
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Li Z, Yue Y, Peng J, Luo Z. Phase engineering two-dimensional nanostructures for electrocatalytic hydrogen evolution reaction. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Wang Z, Wu J, Zheng JJ, Shen X, Yan L, Wei H, Gao X, Zhao Y. Accelerated discovery of superoxide-dismutase nanozymes via high-throughput computational screening. Nat Commun 2021; 12:6866. [PMID: 34824234 PMCID: PMC8616946 DOI: 10.1038/s41467-021-27194-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 11/05/2021] [Indexed: 02/07/2023] Open
Abstract
The activity of nanomaterials (NMs) in catalytically scavenging superoxide anions mimics that of superoxide dismutase (SOD). Although dozens of NMs have been demonstrated to possess such activity, the underlying principles are unclear, hindering the discovery of NMs as the novel SOD mimics. In this work, we use density functional theory calculations to study the thermodynamics and kinetics of the catalytic processes, and we develop two principles, namely, an energy level principle and an adsorption energy principle, for the activity. The first principle quantitatively describes the role of the intermediate frontier molecular orbital in transferring electrons for catalysis. The second one quantitatively describes the competition between the desired catalytic reaction and undesired side reactions. The ability of the principles to predict the SOD-like activities of metal-organic frameworks were verified by experiments. Both principles can be easily implemented in computer programs to computationally screen NMs with the intrinsic SOD-like activity.
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Affiliation(s)
- Zhenzhen Wang
- Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, China
| | - Jiangjiexing Wu
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Jia-Jia Zheng
- Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, China
| | - Xiaomei Shen
- Key Laboratory of Functional Small Organic Molecule, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China
| | - Liang Yan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Wei
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Xingfa Gao
- Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, China.
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Abstract
Salt-assisted chemical vapor deposition (SA-CVD), which uses halide salts (e.g., NaCl, KBr, etc.) and molten salts (e.g., Na2MoO4, Na2WO4, etc.) as precursors, is one of the most popular methods favored for the fabrication of two-dimensional (2D) materials such as atomically thin metal chalcogenides, graphene, and h-BN. In this review, the distinct functions of halogens (F, Cl, Br, I) and alkali metals (Li, Na, K) in SA-CVD are first clarified. Based on the current development in SA-CVD growth and its related reaction modes, the existing methods are categorized into the Salt 1.0 (halide salts-based) and Salt 2.0 (molten salts-based) techniques. The achievements, advantages, and limitations of each technique are discussed in detail. Finally, new perspectives are proposed for the application of SA-CVD in the synthesis of 2D transition metal dichalcogenides for advanced electronics.
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Affiliation(s)
- Shisheng Li
- International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
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11
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Zhang H, Li Q, Hossain M, Li B, Chen K, Huang Z, Yang X, Dang W, Shu W, Wang D, Li B, Xu W, Zhang Z, Yu G, Duan X. Phase-Selective Synthesis of Ultrathin FeTe Nanoplates by Controllable Fe/Te Atom Ratio in the Growth Atmosphere. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101616. [PMID: 34270865 DOI: 10.1002/smll.202101616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/11/2021] [Indexed: 06/13/2023]
Abstract
Phase controllable synthesis of 2D materials is of significance for tuning related electrical, optical, and magnetic properties. Herein, the phase-controllable synthesis of tetragonal and hexagonal FeTe nanoplates has been realized by a rational control of the Fe/Te ratio in a chemical vapor deposition system. Using density functional theory calculations, it has been revealed that with the change of the Fe/Te ratio, the formation energy of active clusters changes, causing the phase-controllable synthesis of FeTe nanoplates. The thickness of the obtained FeTe nanoplates can be tuned down to the 2D limit (2.8 nm for tetragonal and 1.4 nm for hexagonal FeTe). X-ray diffraction pattern, transmission electron microscopy, and high resolution scanning transmission electron microscope analyses exhibit the high crystallinity of the as-grown FeTe nanoplates. The two kinds of FeTe nanoflakes show metallic behavior and good electrical conductivity, featuring 8.44 × 104 S m-1 for 9.8 nm-thick tetragonal FeTe and 5.45 × 104 S m-1 for 7.6 nm-thick hexagonal FeTe. The study provides an efficient and convenient route for tailoring the phases of FeTe nanoplates, which benefits to study phase-sensitive properties, and may pave the way for the synthesis of other multiphase 2D nanosheets with controllable phases.
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Affiliation(s)
- Hongmei Zhang
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Qiuqiu Li
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Mongur Hossain
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Bo Li
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Keqiu Chen
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Ziwei Huang
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Xiangdong Yang
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Weiqi Dang
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Weining Shu
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Di Wang
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Bailing Li
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Weiting Xu
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Zucheng Zhang
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Gang Yu
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Xidong Duan
- Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
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12
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Cao VA, Kim M, Hu W, Lee S, Youn S, Chang J, Chang HS, Nah J. Enhanced Piezoelectric Output Performance of the SnS 2/SnS Heterostructure Thin-Film Piezoelectric Nanogenerator Realized by Atomic Layer Deposition. ACS NANO 2021; 15:10428-10436. [PMID: 34014067 DOI: 10.1021/acsnano.1c02757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Recently, the inherent piezoelectric properties of the 2D transition-metal dichalcogenides (TMDs) tin monosulfide (SnS) and tin disulfide (SnS2) have attracted much attention. Thus the piezoelectricity of these materials has been theoretically and experimentally investigated for energy-harvesting devices. However, the piezoelectric output performance of the SnS2- or SnS-based 2D thin film piezoelectric nanogenerator (PENG) is still relatively low, and the fabrication process is not suitable for practical applications. Here we report the formation of the SnS2/SnS heterostructure thin film for the enhanced output performance of a PENG using atomic layer deposition (ALD). The piezoelectric response of the heterostructure thin film was increased by ∼40% compared with that of the SnS2 thin film, attributed to large band offset induced by the heterojunction formation. Consequently, the output voltage and current density of the heterostructure PENG were 60 mV and 11.4 nA/cm2 at 0.6% tensile strain, respectively. In addition, thickness-controllable large-area uniform thin-film deposition via ALD ensures that the reproducible output performance is achieved and that the output density can be lithographically adjusted depending on the applications. Therefore, the SnS2/SnS heterostructure PENG fabricated in this work can be employed to develop a flexible energy-harvesting device or an attachable self-powered sensor for monitoring pulse and human body movement.
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Affiliation(s)
- Viet Anh Cao
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Minje Kim
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Weiguang Hu
- Graduate School of Energy Science and Technology, Chungnam National University, Daejeon 34134, Korea
| | - Sol Lee
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Sukhyeong Youn
- Department of System Semiconductor Engineering, Yonsei University, Seoul 03722, Korea
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Korea
| | - Jiwon Chang
- Department of System Semiconductor Engineering, Yonsei University, Seoul 03722, Korea
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Korea
| | - Hyo Sik Chang
- Graduate School of Energy Science and Technology, Chungnam National University, Daejeon 34134, Korea
| | - Junghyo Nah
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
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13
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Jiang Y, Baben MT, Lin Y, Littler C, Syllaios AJ, Neogi A, Philipose U. Analyzing growth kinematics and fractal dimensions of molybdenum disulfide films. NANOTECHNOLOGY 2021; 32:245602. [PMID: 33706300 DOI: 10.1088/1361-6528/abedf0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Though the positive role of alkali halides in realizing large area growth of transition metal dichalcogenide layers has been validated, the film-growth kinematics has not yet been fully established. This work presents a systematic analysis of the MoS2morphology for films grown under various pre-treatment conditions of the substrate with sodium chloride (NaCl). At an optimum NaCl concentration, the domain size of the monolayer increased by almost two orders of magnitude compared to alkali-free growth of MoS2. The results show an inverse relationship between fractal dimension and areal coverage of the substrate with monolayers and multi-layers, respectively. Using the Fact-Sage software, the role of NaCl in determining the partial pressures of Mo- and S-based compounds in gaseous phase at the growth temperature is elucidated. The presence of alkali salts is shown to affect the domain size and film morphology by affecting the Mo and S partial pressures. Compared to alkali-free synthesis under the same growth conditions, MoS2film growth assisted by NaCl results in ≈81% of the substrate covered by monolayers. Under ideal growth conditions, at an optimum NaCl concentration, nucleation was suppressed, and domains enlarged, resulting in large area growth of MoS2monolayers. No evidence of alkali or halogen atoms were found in the composition analysis of the films. On the basis of Raman spectroscopy and photoluminescence measurements, the MoS2films were found to be of good crystalline quality.
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Affiliation(s)
- Yan Jiang
- Department of Physics, University of North Texas, Denton, TX 76203, United States of America
| | | | - Yuankun Lin
- Department of Physics, University of North Texas, Denton, TX 76203, United States of America
| | - Chris Littler
- Department of Physics, University of North Texas, Denton, TX 76203, United States of America
| | - A J Syllaios
- Department of Physics, University of North Texas, Denton, TX 76203, United States of America
| | - Arup Neogi
- Department of Physics, University of North Texas, Denton, TX 76203, United States of America
| | - Usha Philipose
- Department of Physics, University of North Texas, Denton, TX 76203, United States of America
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14
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Bergeron H, Lebedev D, Hersam MC. Polymorphism in Post-Dichalcogenide Two-Dimensional Materials. Chem Rev 2021; 121:2713-2775. [PMID: 33555868 DOI: 10.1021/acs.chemrev.0c00933] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Two-dimensional (2D) materials exhibit a wide range of atomic structures, compositions, and associated versatility of properties. Furthermore, for a given composition, a variety of different crystal structures (i.e., polymorphs) can be observed. Polymorphism in 2D materials presents a fertile landscape for designing novel architectures and imparting new functionalities. The objective of this Review is to identify the polymorphs of emerging 2D materials, describe their polymorph-dependent properties, and outline methods used for polymorph control. Since traditional 2D materials (e.g., graphene, hexagonal boron nitride, and transition metal dichalcogenides) have already been studied extensively, the focus here is on polymorphism in post-dichalcogenide 2D materials including group III, IV, and V elemental 2D materials, layered group III, IV, and V metal chalcogenides, and 2D transition metal halides. In addition to providing a comprehensive survey of recent experimental and theoretical literature, this Review identifies the most promising opportunities for future research including how 2D polymorph engineering can provide a pathway to materials by design.
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Affiliation(s)
- Hadallia Bergeron
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Dmitry Lebedev
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Mark C Hersam
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States.,Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.,Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, United States
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15
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Fu Q, Mo H, Ostrikov K(K, Gu X, Nan H, Xiao S. Controllable synthesis of SnS2 flakes and MoS2/SnS2 heterostructures by confined-space chemical vapor deposition. CrystEngComm 2021. [DOI: 10.1039/d1ce00075f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A halogen salt-assisted confined-space CVD method is used for the controllable synthesis of SnS2 flakes, which are parallel to the substrate and have the characteristics of better crystallinity and fewer S vacancies.
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Affiliation(s)
- Quangui Fu
- Engineering Research Center of IoT Technology Applications (Ministry of Education)
- Department of Electronic Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Haoxin Mo
- Engineering Research Center of IoT Technology Applications (Ministry of Education)
- Department of Electronic Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Kostya (Ken) Ostrikov
- School of Chemistry
- Physics and Mechanical Engineering and Institute for Future Environments
- Queensland University of Technology
- Brisbane
- Australia
| | - Xiaofeng Gu
- Engineering Research Center of IoT Technology Applications (Ministry of Education)
- Department of Electronic Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Haiyan Nan
- Engineering Research Center of IoT Technology Applications (Ministry of Education)
- Department of Electronic Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Shaoqing Xiao
- Engineering Research Center of IoT Technology Applications (Ministry of Education)
- Department of Electronic Engineering
- Jiangnan University
- Wuxi 214122
- China
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16
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Philipose U, Jiang Y, Farmer G, Howard C, Harcrow M, Littler C, Lopes V, Syllaios AJ, Sood A, Zeller JW. Using a Novel Approach to Estimate Packing Density and Related Electrical Resistance in Multiwall Carbon Nanotube Networks. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:nano10122350. [PMID: 33256198 PMCID: PMC7759792 DOI: 10.3390/nano10122350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/17/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
In this work, we use contrast image processing to estimate the concentration of multi-wall carbon nanotubes (MWCNT) in a given network. The fractal dimension factor (D) of the CNT network that provides an estimate of its geometrical complexity, is determined and correlated to network resistance. Six fabricated devices with different CNT concentrations exhibit D factors ranging from 1.82 to 1.98. The lower D-factor was associated with the highly complex network with a large number of CNTs in it. The less complex network, having the lower density of CNTs had the highest D factor of approximately 2, which is the characteristic value for a two-dimensional network. The electrical resistance of the thin MWCNT network was found to scale with the areal mass density of MWCNTs by a power law, with a percolation exponent of 1.42 and a percolation threshold of 0.12 μg/cm2. The sheet resistance of the films with a high concentration of MWCNTs was about six orders of magnitude lower than that of less dense networks; an effect attributed to an increase in the number of CNT-CNT contacts, enabling more efficient electron transfer. The dependence of the resistance on the areal density of CNTs in the network and on CNT network complexity was analyzed to validate a two-dimension percolation behavior.
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Affiliation(s)
- Usha Philipose
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Yan Jiang
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Gavin Farmer
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Chris Howard
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Michael Harcrow
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Chris Littler
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Vincent Lopes
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Athanasios J. Syllaios
- Department of Physics, University of North Texas, Denton, TX 75077, USA; (Y.J.); (G.F.); (C.H.); (M.H.); (C.L.); (V.L.); (A.J.S.)
| | - Ashok Sood
- Magnolia Optical Technologies, Inc., Woburn, MA 01801, USA; (A.S.); (J.W.Z.)
| | - John W. Zeller
- Magnolia Optical Technologies, Inc., Woburn, MA 01801, USA; (A.S.); (J.W.Z.)
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