APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Yun Mou,Hao Cheng,Hao Wang,Qinglei Sun,Jiaxin Liu,Yang Peng,Mingxiang Chen
Stability of conductive ink and mechanical flexibility of conductive pattern are essential for flexible printed electronics. In this work, we reported a stable reactive silver ink for the facile fabrication of flexible electrodes. The ink was mainly composed of silver-isopropanolamine (IPA) complex, formic acid reductant, and hydroxyethyl cellulose (HEC) adhesive agent, and it displayed good chemical stability. The flexible electrodes on polyimide (PI) substrates were achieved by mask-printing and thermal sintering of the ink, and the effects of sintering parameters and HEC adhesive agent content on the electrical and flexible properties and microstructure evolutions of silver layer were systematically investigated. Consequently, the silver layer sintered at 110 °C yields low electrical resistivity of 12.1 μΩ·cm, which is only eight times higher than that of bulk silver. Furthermore, the sintered silver layer still presents excellent flexibility and low relative resistances after the bending, twisting, and folding tests. These results demonstrate that the stable reactive silver ink provides a promising and low cost opportunity for low temperature design and fabrication of high performance flexible printed electronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Xuejie Yue,Tao Zhang,Dongya Yang,Fengxian Qiu
Flexible ceramic material, as a fundamental component of a toolset for the design of multifunctional materials, is very desirable, but a simple and effective preparation strategy is still missing. Herein, a flexible Si 3 N 4 /MnO 2 ceramic membrane was fabricated by facile vacuum filtration progress using hard Si 3 N 4 particles and soft ultralong MnO 2 nanowires as building blocks. The Si 3 N 4 particles were uniformly anchored into the porous flexible membrane, depending on the mechanical entanglement from ultralong MnO 2 nanowires, resulting in the excellent interface stability between them. Thanks to the flexibility of MnO 2 nanowires and interface stability, the as-prepared flexible membrane achieves superior flexibility including bending, folding, and twining. The flexible ceramic membrane can broaden the application range beyond the traditional ceramic use as hard structural materials. Moreover, the design strategy developed herein is applicable to other hard ceramic with similar issues.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Kai Yang,Min Luo,Daotong Zhang,Chaozheng Liu,Zhao Li,Liangcai Wang,Weimin Chen,Xiaoyan Zhou
Porous carbon (PC) can effectively alleviate the typical self-stacking phenomenon of 2D MXene-based films as a spacer, and can easily customize their porous structure. Nevertheless, the contact between 3D PC and 2D MXene flakes is generally presented at a point-to-point form owing to the irregular shape of PC, leading to a low efficiency on electron delivery and stress concentration with a fragile characteristic in the resulting films. Herein, 1D carbon nanotube (CNT) was introduced to construct a highly conductive net structure, tightly anchoring PC on MXene flakes, thus ensuring fast electron delivery by increasing the contact area between MXene and PC. Additionally, the interwoven CNTs bridge the horizontal MXene flakes, making internal structure more integral, thereby enhancing the flexibility. Consequently, the Ti 3 C 2 T x (a typical MXene)/CNT/PC (TCP) film has an ability to bear a large scan rate of 1 V s −1 and shows a high areal specific capacitance of 364.8 mF cm −2 at 0.5 mA cm −2 which remains above 80% even at a high current density of 50 mA cm −2 . Furthermore, the fabricated flexible quasi-solid-state supercapacitor (SC) demonstrates a large areal energy density of 10.5 μ Wh cm −2 at 29.8 μ W cm −2 . This study provides a promising approach to overcome the poor flexibility of MXene/PC film without sacrificing the conductivity, meanwhile paving a way for the development of flexible SCs with large charge storage capacity and high rate capability.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Man Cai,Xiaochun Wei,Haifu Huang,Fulin Yuan,Cong Li,Shuaikai Xu,Xianqing Liang,Wenzheng Zhou,Jin Guo
Two-dimensional (2D) Ti 3 C 2 T x MXenes show great potential for application in flexible supercapacitors, due to their good hydrophilicity, metallic conductivity and excellent flexibility. Surface modification of the MXenes by heteroatom doping is a good strategy for adjusting the layer spacing and alleviateing various shortcomings. Herein, the ammonium salt decomposition method is shown to allow rapid nitrogen doping into Ti 3 C 2 T x nanosheets at a low temperature of 350 °C. Compared to the raw Ti 3 C 2 T x , the nitrogen-doped Ti 3 C 2 T x (designated N-Ti 3 C 2 T x ) shows an increased layer spacing of 1.451 nm, nitrogen doping levels of 1.42 at% and a low number of residual fluorine functional groups. For the application as an electrode of supercapacitors, the N-Ti 3 C 2 T x electrode shows an outstanding pseudocapacitance performance and mechanical flexibility, with a high specific capacitance of up to 449 F g −1 at 2 mV s −1 , which is 1.4 times that of the raw Ti 3 C 2 T x MXene (i.e., 321 F g −1 ). Furthermore, a quasi-solid-state symmetric supercapacitor assembled with a H 2 SO 4 -PVA gel electrolyte is shown to deliver an energy density of 9.57 Wh kg −1 at 250 W kg −1 . The outstanding pseudocapacitance of the N-Ti 3 C 2 T x is attributed to the positive effect of nitrogen doping on MXene, such as larger layer spacing and the increased number of surface active sites. The strategy presented herein also opens up a convenient and versatile approach for preparing high performance MXene Materials for energy conversion and storage.
研究领域:
材料科学
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能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 41
·22182-22193
·
IF 14.511
Guanhua Zhang,Yanli Zhao,Jin Hu,Huaizhi Liu,Tianwei Chen,Huihuang Yu,Huigao Duan
Flexible transparent energy storage systems are urgently desirable to power flexible intelligent electronics, but their development is hampered by the inevitable trade-off between optical transparence and areal capacity. Here, we report a freestanding ultralight (0.54 mg cm−2) nickel micromesh (NM) with exceptional optoelectronic characteristics (Rs = 0.7 Ω sq−1, T = 92.1%) and outstanding mechanical flexibility for flexible transparent supercapacitors. Based on the developed transparent NM, the positive electrode is further constructed by integrating the highly conductive NM with the high-capacity NiCoP (NM@NiCoP), which achieves a specific capacity as high as 11.1 μAh cm−2 with a transmittance of 80.2%. Additionally, a flexible transparent negative electrode is also developed by loading ZIF-8 derived nitrogen-doped porous carbon onto NM (NM@NPC). The assembled solid-state flexible transparent asymmetric supercapacitor with an optical transmittance of 67.5% yields a high areal energy density of 8.0 μW h cm−2 and an extremely stable capacity retention of 97.6% with 50 000 cycles at 10 mA cm−2 as well as mechanical stability even under harsh bending modes. A controllable and universal approach to conquer the trade-off between the specific energy density and optical transparence of the flexible transparent energy supply units is proposed in this work.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Hao Zhang,Dongzhi Zhang,Haolin Cai,Yanhua Ma,Kangshuai Li,Pengfei Zhang,Yihong Guo
With the accelerated integration of flexible electronic technology and modern information technology, the demand for multifunctional flexible devices is becoming increasingly urgent. Hydrogel, as an excellent flexible material, is receiving widespread attention and in-depth research from researchers. In this study, a multifunctional ionic hydrogel was successfully prepared by introducing bacterial cellulose (BC), tannic acid (TA), and LiCl into the P(AM- co -AA) polymer network. This hydrogel exhibits excellent mechanical properties (3208.3 %), good conductivity (4.15 S/m), and outstanding self-adhesiveness. Flexible strain sensors and flexible supercapacitors based on PBTL hydrogel were fabricated, exhibiting advantages such as a wide detection range (0–3000 %), high sensitivity (GF = 6.93), high areal capacitance (133.6 mF/cm 2 ), and good stability. It demonstrates excellent application potential in wearable motion detection and energy storage fields. Furthermore, a smart glove was developed using a 5-unit PBTL sensor, which, combined with VR technology, enables wireless gesture control of a hexapod robot. This system provides a high-quality solution for achieving more advanced interactive tasks in complex environments.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2020
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IF 8.247
Xuan Zhao,Chuanshan Zhao,Yifei Jiang,Xingxiang Ji,Fangong Kong,Tong Lin,Hao Shao,Wenjia Han
Cellulose nanofiber (CNF) is obtained from cellulose resources (e.g., natural cellulose, bacterial cellulose, etc.) and is considered to be a low-cost, green and inexhaustible material. The impressive optical, mechanical, and thermal properties of this material have aroused great interest in fabricating of flexible electronic devices based on CNF. Hereby, the CNF/Bi 2 Te 3 thermoelectric composite films are fabricated using a facile vacuum filtration method. Subsequently, n-type and p-type films composed of this composite materials are used as legs to assemble thermoelectric generator (TEG) prototype. Besides, these composite films exhibit excellent mechanical flexibility and the electrical conductivity of the CNF/Bi 2 Te 3 film only decreases by 8% after 1000 bending cycles. And the contact angle of the polytetrafluoroethylene (PTFE) solution and alkylketene dimmer (AKD) emulsion co-treated film is as high as 150.7°, which has superhydrophobic properties. The TEG prototype consists of five p-n legs. At a temperature gradient of 60 K, the output voltage of the TEG prototype is 22.34 mV and the output power is 561 nW. This work not only proves the great potential of CNF application in flexible thermoelectric (TE) materials, but also promotes robust development of cellulose-based electronics.
研究领域:
材料科学
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能源技术
·
柔性电子学
✓ 已验证
DOI
高影响因子
Nanoscale Research Letters
·
2019
·Vol. 14
·期 1
·1-7
·
IF 3.159
Li Zeping,Wang Geng,Li Zhongming,Cheng Zhengze,Zhou Guopeng,Li Shan
The transmittance, conductivity, and flexibility are the crucial properties for the development of next-generation flexible electrodes. Achieving a good trade-off between transmittance and conductivity of flexible electrodes has been a challenge because the two properties are inversely proportional. Herein, we reveal a good trade-off between transmittance and conductivity of gold nanomesh (AuNM) can be achieved through appropriately increasing the AuNM thickness no more than 40 nm, the mean free path of electrons in Au metal. The further flexibility investigation indicates that the AuNM electrodes with mesh structure show higher tolerance than the Au bulk film, and the AuNM electrodes with smaller inter-aperture wire width can accommodate more tensile strains than a counterpart with bigger inter-aperture wire width. The simulated results based on finite element analysis (FEA) show good agreement with experimental results, which indicates the fabrication method of versatile nanosphere lithography (NSL) is reliable. These results established a promising approach toward next-generation large-scale flexible transparent AuNM electrodes for flexible electronics.
研究领域:
材料科学
·
纳米技术
·
电子器件
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柔性电子学
·
薄膜物理
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Qinqin Zhou,Guanlin Lv,Xinyu Wang,Weili Teng,Peng Hu,Yucheng Du,Hongyi Li,Yuxiang Hu,Wenxin Liu,Jinshu Wang
Improving the specific capacitance and energy density of a fiber-shaped supercapacitor (FSSC) is critical to its applications as an energy storage device for advanced smart wearable electronics. In this paper, a heterogeneous poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/reduced graphene oxide/molybdenum disulfide (PEDOT:PSS/rGO/MoS2) fiber was prepared to achieve a high-performance and durable electrode for the FSSC. As indicated, pseudocapacitive MoS2 was in situ grown on a highly conductive acid-treated PEDOT:PSS/rGO assembly with a hierarchical structure. This structural design emphasizes the wrinkled morphology and high conductivity of the PEDOT:PSS/rGO backbone to maximize the MoS2 deposition and accelerate its electron transfer, which fully utilizes the pseudocapacitance of MoS2 and provides additional capacitance contribution to the obtained device. Attributed to the synergy, the prepared fiber electrode in the FSSC exhibits high volumetric/areal specific capacitance (325.8 F cm–3/405.3 mF cm–2 at 1 A cm–3 or 1.2 mA cm–2) and excellent rate performance (82%, 1–10 A cm–3). The corresponding device shows an ultrahigh volumetric energy density of 6.9 mW h cm–3 at a high power density of 173.6 mW cm–3 and an areal energy density of 8.5 μW h cm–2 at 215.9 μW cm–2, together with excellent cycle stability and mechanical flexibility, outperforming most of the previously reported FSSCs. Accordingly, the proposed strategy provides a great opportunity to develop a high-performance FSSC for further wearable electronics.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yanqi Fan,Xiaocheng Liu,Shougen Yin,Shishuai Sun
Developing a simple and rapidly preparative method for patterned flexible supercapacitors is essential and indispensable for the swift advancement of portable devices integrated with micro devices. In this study, we employed a cost-effective and rapid fabrication method based on transfer-printing technology to produce patterned micro flexible supercapacitors with various substrates. The resulting flexible micro supercapacitors not only allow for customized patterns with strong flexibility and resistance to bending, while maintaining a certain level of performance, but also facilitate the creation of diverse circuits to tailor voltage and current to specific requirements. Patterned micro flexible supercapacitors with a thickness of 0.02 mm, based on accordion-like Ti3C2Tx MXene materials coated on a substrate, demonstrate a specific capacitance of 142.7 mF cm–2 at 0.5 mA cm–2. The devices exhibit satisfactory capacitance retention (91% after 5000 cycles) and superb mechanical flexibility (71% capacitance retention at 180° bending after 2000 cycles). At a power density of 2.9 mW cm–2, the energy density of the sandwich structure device reaches 126.8 μWh cm–2. This study is expected to contribute new ideas for the design and preparation of patterned flexible supercapacitors.
研究领域:
材料科学
·
能源存储
·
微电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Bingfei Dai,Xiaofan Shi,Xudong Pei,Feng Xu,Yang Zhao
Flexible aqueous lithium-ion batteries are promising safe power sources for next-generation of portable and wearable electronic devices due to their intrinsic safety and eco-friendliness. However, water-related side reactions in aqueous electrolytes have greatly limited their operating voltage and electrochemical performance. Herein, we report a new family of 2.4 V high-voltage flexible aqueous lithium-ion fiber battery by designing a fluorine-free and high-voltage synergistic dual co-solvents aqueous hybrid electrolyte with high ionic conductivity , low cost, and high safety. Sulfolane and trimethyl phosphate are used as synergistic dual co-solvents, which can not only extend the electrochemical stability window of electrolyte to 3.3 V by suppressing the activity of water, but also form a S-/P-containing inorganics-rich solid electrolyte chlorination interphase for better electrochemical performance. Combined with novel flexible hybrid fiber electrodes, the resulting flexible aqueous fiber batteries exhibit high working voltage plateau (2.4 V, much higher than most reported flexible aqueous batteries), high energy density (146.5 Wh kg −1 ), and superior cycling performance (500 cycles). In addition, these aqueous fiber batteries present impressive mechanical flexibility, which can be easily woven into clothes to power wearable electronics. This work is an inspiration for the design of next-generation of flexible batteries with both high energy and safety.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Shuhua Zhang,Jie Wen,Yuanhao Tian,Huiming Ning,Huan Yang,Qian Shu,Ning Hu
Supercapacitors have attracted considerable attention in the context of electric vehicles, renewable energy storage, and industrial equipment. Nevertheless, further work is required to enhance the energy storage performance and improve the adaptability of supercapacitors under mechanical loads. To address these challenges, we propose a novel design strategy for composite micro-nano structures of reduced graphene oxide coated in situ growth of nickel manganite nanoarrays on the carbon fiber surface (CF@NiMn 2 O 4 @rGO). This design enables the fabrication of flexible supercapacitor electrodes with optimised electrochemical and mechanical properties. The CF@NiMn 2 O 4 @rGO cathode exhibits a synergistic effect that enhances energy storage, as evidenced by a high specific capacitance of 1003.35 F g −1 (at 10 mA cm −2 ) and exceptional cycling stability over more than 4000 cycles. Furthermore, the flexible carbon fiber (CF) and in-situ grown nickel manganite@reduced graphene oxide (NiMn 2 O 4 @rGO) contribute to improved mechanical properties of the electrode. The assembled supercapacitor exhibits both high energy density and cycling stability. Notably, the flexible bending angle ranging from 0° to 180° has minimal impact on the energy storage performance of this flexible supercapacitor. Even under a bending angle of 180°, it successfully powers a small light bulb. This novel nanostructured material presents an innovative approach for designing flexible supercapacitors.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）