Coatings
·
2023
·Vol. 13
·期 3
·490
·
IF 3.4
Guangwan Zhang,Chunhua Han,Kang Han,Jinshuai Liu,Jinghui Chen,Haokai Wang,Lei Zhang,Xuanpeng Wang
Sodium-ion batteries (SIBs) are considered a potential replacement for lithium-ion batteries in the area of low-cost large-scale energy storage. Due to its low operating voltage, high capacity, non-toxicity and low production cost, titanium dioxide is now among the anode materials under investigation and shows the most promise. However, its poor electrical conductivity is one of the main reasons limiting its large-scale application. Herein, we designed a ruthenium-doped anatase-type VTi2.6O7.2ultrafine nanocrystal (Ru-VTO). As the anode of SIBs, Ru-VTO delivers a high specific capacity of 297 mAh g−1at 50 mA g−1, a long cycle life of 2000 cycles and a high rate capability (104 mAh g−1at 1000 mA g−1). The excellent performance may be related to the solid-solution interatomic interactions and the enhanced conductivity after ruthenium doping. These studies demonstrate the potential of Ru-VTO as an anode material for advanced SIBs.Keywords:titanium-based material;ru doping;high conductivity;anode;sodium-ion battery
研究领域:
材料科学
·
电化学
·
能量存储
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DOI
高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 25
·255301
·
IF 3.551
Zhijun Luo,Yanan Liu,Ziyu Liu,Duan Wang,Zongsong Gan,Changsheng Xie
The fabrication of poly 3,4-ethylene dioxythiophene (PEDOT) devices generally requires a separated strategy for EDOT polymerization and PEDOT coating, thus increasing th difficulty of their integration. With the goal of insolubility of PEDOT in a common solution, material modifications including grafting vinyl moiety groups on the side chain of the PEDOT can increase its solubility, but also markedly reduce the conductivity. Here, we report direct laser writing of pure EDOT monomer into PEDOT with a feature size of 140 nm. The PEDOT nanowire possesses the high conductivity of 1.28 × 105 S m−1 and can be patterned on solid and flexible substrates with various structures, thus paving the way towards organic highly conductive device fabrication and integration.
研究领域:
材料科学
·
有机电子学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yi Wei,Yuxi Li,Jianhui Yan,Yujun Liu,Xu-Ming Xie
Flexible transparent conductive materials show great potential in wearable electronics, flexible sensors, and so on. But the most used flexible conductive materials like hydrogels and ionogels suffer from evaporation and solvent leakage. For the application in these fields, integrated performances of preeminent resilience, transparency, stability, and conductivity that do not change with deformation are prerequisites. It is still challenging to handle the trade-off among these performances. Herein, a facile approach is established to balance these properties into one elastomer. Through the thiol–ene click reaction, mercaptopropyl-modified polydimethylsiloxane (mPDMS) is cross-linked and grafted by PEG-based macromonomers to prepare conductive elastomers. By anchoring with mPDMS through carbon–sulfur bonds, PEG can be evenly dispersed, resulting in ultratransparency (97%) and stable conductivity of as high as 1.68 × 10–2 S m–1, comparable to pure PEG/lithium salt conductivity. It also has a wide electrochemical stability window with a high voltage of 4.8 V. Moreover, the multibond network strategy is employed through grafting ligand 1-vinylimidazole to mPDMS to construct dynamic cross-links between Zn(II) and 1-vinylimidazol, bestowing excellent properties to the elastomers. Overall, elastomers with a well-balanced performance of high resilience, good conductivity, and ultratransparency are obtained, providing promising applications for soft electronics, lithium battery electrolytes, and flexible devices.
研究领域:
材料科学
·
柔性电子器件
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY
·
2025
·Vol. 38
·期 1
·21-27
·
IF 0.7
Rui Hou,Aojie Liu,Chao Lv,Ning Zeng,Zezheng Zhang,Siyi Liu,Qin Li,Akira Watanabe,Gang Jiang,Jinguang Cai
High-conductive ultra-thin metallic wires, as basic structures in electronic devices, are highly demanded but challenging to improve the integration level and miniaturization of the devices. In this study, an efficient laser direct writing approach was proposed and aimed at preparing Ag wires with widths as narrow as 2 μm by irradiating the AgNO3-polymer film with a compact blue-violet laser. A comprehensive exploration of various parameters was conducted, leading to the optimization of Ag wires exhibiting an impressively low resistivity of 2.35×10-7Ω·m. In addition, an Ag wire prepared by laser direct writing on the flexible PEN substrate shows high tolerance to the inward and outward bending, demonstrating excellent flexibility and mechanical stability. On this basis, a UV-light detector based on the laser-irradiated interdigitated Ag patterns and sensitive CdS nanorods was demonstrated with high sensitivity and fast response.
研究领域:
材料科学
·
微纳加工
·
光电检测
·
柔性电子器件
✓ 已验证
产品关联
DOI
高影响因子
Royal Society Open Science
·
2020
·Vol. 7
·期 1
·
IF 2.646
Tianrui Chen,Hui Yang,Shengchi Bai,Yan Zhang,Xingzhong Guo
With polyol-synthesized silver nanoparticles (AgNPs) as raw materials, the silver electrodes with high conductivity were fabricated via a dip-coating method followed by sintering process, and the effects of the dip-coating and sintering process on the conductivity and surface roughness of silver electrodes were investigated in detail. The silver film with a thickness of 1.97 µm and a roughness of about 2 nm can be prepared after dip-coating at a pulling rate of 500 µm s−1 for 40 coating times. The non-conductive dip-coated silver films are transformed into conductive silver electrodes after conventional sintering in a muffle oven, infrared sintering and microwave sintering, respectively. Compared with high sintering temperature and long sintering time of conventional sintering and infrared sintering, microwave sintering can achieve quick sintering of silver films to fabricate high conductive silver electrodes. The silver electrodes with a sheet resistance of 0.75 Ω sq−1 and a surface roughness of less than 1 nm can be obtained after microwave sintering at 500 W for 50 s. The adjustable dip-coating method followed by quick microware sintering is an appropriate approach to prepare high conductive AgNPs-based electrodes for organic light-emitting diodes or other devices.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 4
Tang Ming-Jun,Yan Jian-Hui,Liu Yu-Jun,Wei Yi,Li Yu-Xi,Xie Xu-Ming
Integrated conductive elastomers with excellent mechanical performance, stable high conductivity, self-healing capabilities, and high transparency are critical for advancing wearable devices. Nevertheless, achieving an optimal balance among these properties remains a significant challenge. Herein, through in situ free-radical copolymerization of 2-[2-(2-methoxyethoxy)ethoxy]ethyl acrylate (TEEA) and vinylimidazole (VI) in the presence of polyethylene glycol (PEG; M n =400), tough P(TEEA- co -VI)/PEG elastomers with multiple functionalities were prepared, in which P(TEEA- co -VI) was dynamically cross-linked by imidazole-Zn 2+ metal coordination crosslinks, and physically blended with PEG as polymer electrolyte to form a homogeneous mixture. Notably, Zn 2+ has a negligible impact on the polymerization process, allowing for the in situ formation of numerous imidazole-Zn 2+ metal coordination crosslinks, which can effectively dissipate energy upon stretching to largely reinforce the elastomers. The obtained P(TEEA- co -VI)/PEG elastomers exhibited a high toughness of 10.0 MJ·m -3 with a high tensile strength of 3.3 MPa and a large elongation at break of 645%, along with outstanding self-healing capabilities due to the dynamic coordination crosslinks. Moreover, because of the miscibility of PEG with PTEEA copolymer matrix, and Li + can form weak coordination interactions with the ethoxy (EO) units in PEG and PTEEA, acting as a bridge to integrate PEG into the elastomer network. The resulted P(TEEA- co -VI)/PEG elastomers showed high transparency (92%) and stable high conductivity of 1.09×10 -4 S·cm -1 . In summary, the obtained elastomers exhibited a well-balanced combination of high toughness, high ionic conductivity, excellent self-healing capabilities, and high transparency, making them promising for applications in flexible strain sensors.
研究领域:
材料科学
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化学
·
电子工程
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产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 29
·22638-22646
·
IF 3.84
Chengsha Wei,Mingming Chen,Dong Liu,Weiming Zhou,Majid Khan,Xibo Wu,Ningdong Huang,Liangbin Li
In this article, we report the synthesis of a disulfide bonded reversibly chemically cross-linked ion gel with high toughness and conductivity by sequential triblock copolymer self-assembly and the subsequent oxidation of thiol groups. Through reversible thiol-disulfide exchange, the ion gels had both high toughness of chemicals and recyclability of physical cross-linked ion gels. The triblock copolymer (SOS-SH) was prepared as follows: first, the RAFT copolymerization of styrene and 4-vinylbenzyl chloride (VBC) using CTA–PEO–CTA as a bi-functional macroRAFT agent was performed to obtain a triblock copolymer (SOS-Cl); then, the chloride group of SOS-Cl was replaced by an azido group to obtain SOS-N3; and finally, the click reaction of SOS-N3 with O-ethyl-S-prop-2-ynyl carbonodithioate and subsequent aminolysis were conducted to obtain SOS-SH. The disulfide bonded reversibly chemically cross-linked ion gel could be re-dissolved when mixed with a little amount of mild reducing agent (e.g., DTT) in CH2Cl2 with vigorous stirring, which reformed again after the removal of solvent and oxidation of thiol groups. The ion gels could undergo the reduction–oxidation cycle at least twice with a little loss of ionic conductivity and toughness (less than 25%), exhibiting good recyclability. Raman measurements were performed to confirm the existence and the key role of disulfide bond on the recyclability.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Sufeng Zhang,Chen Hua,Bin He,Pengbing Chang,Min Du,Ye Liu
Flexible electronics products have attracted wide attention because of their excellent flexibility, conductivity and stability. In this study, the liquid phase reduction method was used to in situ reduce fractal-structured silver particles (FSSPs) on cellulose surface to prepare conductive paper with excellent conductivity, and good stability and flexibility. The experimental results show that when the mass ratio of silver to cellulose was 1.5:1, the sheet resistance of conductive paper is as low as 0.02 Ω·sq −1 , and the conductivity reaches 1041.33 S cm −1 , which shows excellent conductivity. In order to expand the application of conductive paper in the field of flexible wearable electronic products, the mechanical stability and oxidation resistance of conductive paper were tested. The results show that the conductive paper has good stability and is expected to replace the flexible electronics products made of plastic.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 43
·16755-16763
·
IF 7.367
Kaixi Bi,Quan Xiang,Yiqin Chen,Huimin Shi,Zhiqin Li,Jun Lin,Yongzhe Zhang,Qiang Wan,Guanhua Zhang,Shiqiao Qin,Xueao Zhang,Huigao Duan
We report an electron-beam lithography process to directly fabricate graphene@copper composite patterns without involving metal deposition, lift-off and etching processes using copper naphthenate as a high-resolution negative-tone resist. As a commonly used industrial painting product, copper naphthenate is extremely cheap with a long shelf time but demonstrates an unexpected patterning resolution better than 10 nm. With appropriate annealing under a hydrogen atmosphere, the produced graphene@copper composite patterns show high conductivity of ∼400 S cm−1. X-ray diffraction, conformal Raman spectroscopy and X-ray photoelectron spectroscopy were used to analyze the chemical composition of the final patterns. With the properties of high resolution and high conductivity, the patterned graphene@copper composites could be used as conductive pads and interconnects for graphene electronic devices with ohmic contacts. Compared to common fabrication processes involving metal evaporation and lift-off steps, this pattern-transfer-free fabrication process using copper naphthenate resist is direct and simple but allows comparable device performance in practical device applications.
研究领域:
材料科学
·
纳米技术
·
电子工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Zhi-Chao Xu,Yu-Qin Yang,Xiao-Wen Pang,Yu-Tong Xu,Li-Xiu Gong,Long-Cheng Tang,Shi-Neng Li
Ideal conductive hydrogels with their mechanical ductility, high conductivity and self-adhesion are essential for potential promising application as fascinating sensing materials in wearable electronic devices. Unfortunately, due to the inevitable performance degeneration stemming from swelling features in aqueous conditions, the applicability of hydrogel-based sensors is greatly reduced in aquatic environments. Herein, an amphibious hydrogel with mechanical ductile, self-adhesive, anti-freezing, and high strain sensitivity underwater is developed. The hydrogel produces a rapid self-gelation behavior at ambient conditions (several minutes) through a catechol redox reaction based on lignocellulosic nanofibril-Ag + . The tough polymer network by the virtue of strong hydrogen bonding and nano-reinforcement enables the resultant hydrogel with improved mechanical performance. Meanwhile, outstanding properties including high conductivity (2.12 S/m), strain sensing ability (maximum GF: 3.98), good water resistance (equilibrium swelling ratio of 1.2% after 30 d) as well as other solvents, air/underwater adhesiveness, and anti-freezing performance can be obtained simultaneously. A sensor based on such hydrogel can be conveniently conformed and attached to the human limbs for achieving non-invasive, high stability and continuous underwater communications and habits tracking of marine. Briefly, this work provides an innovative route to develop multifunctional integration hydrogel-based flexible devices for information transmission in marine environments.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2021
·Vol. 307
·期 2
·2100652
·
IF 4.367
Xiaoyu Wang,Xiangdong Wang,Menghan Pi,Rong Ran
High performance and high conductivity have always been important indicators for the application of hydrogels in the field of soft electronics. However, it is difficult for hydrogels to have both high conductivity and excellent mechanical properties. In this paper, a simple and feasible method is proposed, which allows polyvinyl alcohol to be embedded in the porous polyacrylamide chemical crosslinked network to form a structure of rich pores, and then soaked in salt solution to form a dense structure of hydrogels. In order to obtain good mechanical properties and electrical conductivity synchronously the hydrogel is soaked in KCl and NaCl solutions, respectively. However, different properties hydrogels are obtained after soaked in different salt solution, such as the strain of hydrogel after soaked in NaCl solution reached 750%, the conductivity of hydrogel after soaked in KCl solution is high (15.7 S m −1 ) and performed excellent conductivity even at low temperature (0 °C). In addition to the hydrogel after soaked in KCl solution showed 13.3 mF cm −2 high capacitance, the CV curve with regular shape and low temperature (0 °C) usage capacity when used as super capacitor. The conductive hydrogel can be used as artificial neural signal sensor, allowing produce artificial skin in medical field.
研究领域:
材料科学
·
软电子学
·
生物医学工程
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Ziming Fu,Wenhao Cao,Changyu Qin,Chuang Ning,Ming Liu,Zequan Li,Zhiyong Qin,Shuangliang Zhao,Wei Gao
Conductive adhesives offer considerable promise in areas such as disaster warning and structural bonding in timber buildings. However, current conductive adhesives suffer from low bonding strength, poor interfacial adhesion, low cohesive strength, and low sensitivity. Conventional wood adhesives consume considerable energy due to their reliance on hot pressing. Here, this work introduced a styrene–butadiene rubber-based conductive wood adhesive with high environmental sensitivity, developed using interfacial polarity modification and functional filler doping. This conductive adhesive exhibited exceptionally high cold-press lap shear strength (dry shear strength of 3.67 MPa and wet shear strength of 1.80 MPa), strong interfacial adhesion (rapid bonding to polar, nonpolar, and inorganic surfaces), high conductivity (adhesive film conductivity of 0.13 S m–1), and outstanding cohesive strength (5.28 MPa). Exploiting these superior properties, a multilayered (wood-adhesive-wood) environment-sensitive sensor can rapidly identify various early disaster signals, including vibration, temperature rise, and combustion. This study introduced strategies for developing low-energy, high-strength conductive adhesives for timber buildings, thus opening innovative avenues for early disaster warning in timber buildings.
研究领域:
材料科学
·
结构工程
·
传感器技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）