JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Jing Liu,Silan Zhou,Rong Hu,Lin Xue,Jun Li
The development of advanced electrode materials with high specific capacitance and long-term stability is crucial for next-generation supercapacitors. In this work, a novel Bi₂O₂Se/polyaniline (PANI) composite electrode was synthesized via an optimised synthesis protocol. The developed composite exhibited remarkable electrochemical performance, achieving a specific capacity of 630.5 mAh g⁻¹ at 1 A g⁻¹ – surpassing the performance of pristine Bi₂O₂Se (266.7 mAh g⁻¹) by a factor of 2.3. Notably, it achieved 60 % capacity retention at an ultra-high current density of 20 A g⁻¹ and maintains 73 % capacity retention after 5000 cycles, demonstrating outstanding cycling stability. These breakthroughs stem from the synergistic interplay between Bi₂O₂Se's interlayer architecture and PANI's pseudocapacitive properties. This work establishes the Bi₂O₂Se/PANI composite as a promising electrode material for next-generation supercapacitors and offers a versatile design framework for flexible electronics and grid-scale renewable energy storage systems.
研究领域:
材料科学
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电化学
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储能
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Shanshan Song,Gaoping Xu,Bo Wang,Dongqi Liu,Zichen Ren,Chengyu Wang,Jiupeng Zhao,Leipeng Zhang,Yao Li
A multifunctional electronic skin with thermal radiation regulation and electromagnetic interference (EMI) shielding is urgent for electronic systems because of the thermal radiation emission and electromagnetic wave pollution. Herein, a flexible electronic skin was designed and fabricated, where the polyaniline (PANI) served as the functional layer and Ti3C2Tx MXene was employed as the conductive electrode. The transformation of emeraldine salt (ES) and leucoemeraldine base (LB) of PANI makes the skin achieve an infrared emissivity modulation, and the electromagnetic loss of PANI and ultrahigh electrical conductivity of Ti3C2Tx MXene make it exhibit EMI shielding ability. Benefiting from the special structural design, the multifunctional skin with a small thickness (0.3 mm) and low surface density (0.06 g/cm2) exhibits an excellent infrared emissivity modulation ability (Δε) of 0.32 with emissive power of 119.1 W/m2 at the wavelength range of 2.5–25 μm and total shielding effectiveness (SET) of 36.3 dB over the X-band (8.2–12.4 GHz). Meanwhile, the multifunctional skin remains black in the visible spectrum but a changeable color in the infrared spectrum. Even after repeated bending and twisting, the multifunctional skin still maintains a good emissivity adjustment. The simultaneous realization of dynamic thermal radiation regulation and EMI shielding endows the skin promising potential for various fields, such as adaptive infrared camouflage, thermal regulation, anticounterfeiting, and EMI shielding-related crossing field.
研究领域:
材料科学
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电子工程
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纳米技术
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热管理
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电磁兼容性
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Electronic Materials
·
2025
·
IF 5.3
Anqi Zhou,Wenchang Yi,Yingjun Wu,Ziyi Wu,Yawei Fu,Tang Liu,Huimin Li,Naizheng Bian,Song Liu
MXene aerogels, known for their exceptional conductivity, hold significant potential in the development of pressure sensors. However, the van der Waals forces that solely exist between pure MXene nanosheets are inadequate for forming aerogels with high elasticity and mechanical properties, thus restricting the broad application of MXene aerogels in sensor technology. In this research, reduced graphene oxide (RGO) is utilized as the primary framework and incorporate polyaniline (PANI) to enhance intermolecular interaction forces, employing freeze-drying techniques to fabricate 3D porous-structured MXene aerogels. This approach significantly enhances the elasticity and electrical responsiveness of the aerogel. The resulting aerogel-based pressure sensor exhibits high sensitivity (4 kPa −1 ), a wide linear response range (1–20 kPa), rapid response/recovery time (300/100 ms), and excellent stability. The sensor is capable of detecting a variety of pressure signals, from gentle breezes to human motion, and is applied in voice recognition. Using a machine learning framework based on feature engineering, it is possible to accurately identify and classify distinctly pronounced letters from sensor outputs with an accuracy rate as high as 98%. In summary, the high-performance flexible pressure sensor based on MXene aerogel shows great potential for applications in health monitoring, smart wearable devices, and artificial intelligence.
研究领域:
材料科学
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传感器技术
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纳米技术
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柔性电子学
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人工智能
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Dawei Shi,Xin Zhang,Chunhui Chen,Huifang Peng,Zhi Liu
Solar interfacial evaporation has emerged as a promising technology for addressing the global water crisis challenge. Within this field, fabric-based evaporators have garnered considerable research attention due to their scalability and cost-effective manufacturability. Strikingly, cellulose-based materials have become particularly attractive for evaporator design owing to their hydrophilicity and biodegradability, making them ideal candidates. In this study, we developed a high performance solar evaporator through a facile fabrication process by integrating polydopamine (PDA) and polyaniline (PANI) with a cellulose nonwoven fabric substrate. The synergistic interaction between these components endows the evaporator with exceptional photothermal conversion capabilities, demonstrating a remarkable average optical absorption efficiency of 92.44 %. The device achieves surface temperatures of 105.1°C at dry state and 65.9°C at wet state under 3 kW m⁻². It achieves a high evaporation rate of 1.488 kg m⁻² h⁻¹ and an energy conversion efficiency of 94.09 % under 1 kW m⁻². Field testing demonstrated practical freshwater production of 6.28 kg m⁻² over an 8-hour operational period. Furthermore, the material's inherent superior hydrophilicity effectively inhibits salt accumulation, ensuring stable long-term performance. This cellulose-based photothermal evaporation system represents a significant advancement in sustainable desalination technology for large-scale seawater desalination and wastewater reclamation.
研究领域:
可再生能源
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材料科学
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环境工程
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纳米技术
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化学工程
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可持续技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·
IF 14.3
Kaifeng Chen,Hua Yang,Ang Wang,Linsen Tang,Xin Zha,Ndeutala Selma Iita,Hong Zhang,Zhuoxuan Li,Xinyu Wang,Wei Yang,Shaoxing Qu,Zongrong Wang
Signal drift and hysteresis of flexible piezoresistive sensors pose significant challenges against the widespread applications in emerging fields such as electronic skin, wearable equipment for metaverse and human-AI (artificial intelligence) interfaces. To address the creep and relaxation issues associated with pressure-sensitive materials, a highly stable piezoresistive composite is proposed, using polyamide-imide (PAI) fibers as the matrix and in situ grafted-polymerized polyaniline (PANI) as the semi-conducting layer. The PAI with large rigid fluorenylidene groups exhibits a high glass transition temperature of 372 °C (PAI 5-5), which results in an extremely long relaxation time at room temperature and consequently offers outstanding anti-creep/relaxation performances. The enhancement of PAI-PANI interfacial bonding through in situ grafting improves the sensor reliably. The sensor presents high linear sensitivity of 35.3 kPa −1 over a pressure range of 0.2–20 kPa, outstanding repeatability, and excellent dynamic stability with only a 3.8% signal deviation through ≈10 000 cycles. Real-time visualization of pressure distribution is realized by sensor matrices, which demonstrate the capability of tactile gesture recognition on both flat and curved surfaces. The recognition of sitting postures is achieved by two 12 × 12 matrices facilitated by machine learning, which prompts the potential for the augmentation of smart driving.
研究领域:
材料科学
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传感器
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人工智能
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汽车工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yingyi Ma,Xiaoting Liu,Yu Si,Xinzheng Li,Xinran Li,Jingfang Li
The development of three-dimensional (3D) polyaniline (PANI) architectures offers an effective strategy to address the inherent limitations of PANI-based electrodes, particularly their poor rate capability and cycling stability during repeated charge/discharge processes. However, the intrinsic low processability of PANI hampers the construction of well-defined 3D structures. In this work, we report A green and cost-effective self-assembly method to fabricate a 3D ordered porous PANI framework integrated with carbon nanotubes (CNTs). The synergistic combination of hierarchical porosity and CNT reinforcement effectively suppresses volumetric shrinkage and structural degradation, while facilitating electron transport and ion diffusion. The resulting PANI/CNT porous film exhibits a high specific capacitance of 409.7 F g −1 at 0.25 A g −1 , excellent rate capability (61.4 % retention from 0.25 to 10 A g −1 ), and outstanding cycling stability with 94.6 % retention after 5000 cycles. The electrode also shows robust mechanical and thermal stability under bending and temperature variations. The capacitive performance can be precisely tuned by adjusting the self-assembly parameters. When assembled into a symmetric solid-state supercapacitor (SSC), the device delivers a specific capacitance of 311.3 F g −1 , an energy density of 43.2 Wh kg −1 at 125.0 W kg −1 , and retains 23.0 Wh kg −1 at 4998.0 W kg −1 . The SSCs can be connected in series or parallel to scale output voltage and current, enabling practical applications such as lighting up LEDs. This study presents a scalable strategy for constructing functional 3D PANI-based architectures and provides new insights into the design of high-performance flexible energy storage devices.
研究领域:
材料科学
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纳米技术
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储能
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电化学
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高分子科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Advances
·
2024
·
IF 5.2
Aiqiong Wang,Jianxiong Li,Xiaoming Zhao
The bandwidth of microwave interference (MWI) has broadened with the increase of portable and intelligent electronics properties due to the diversification of irradiation frequencies. To shield against MWI over a broadened bandwidth, a coral-like polyaniline (PANI)/CoFe2O4 (CFO) nanocomposite (PCF) microwave absorber (MWA) was synthesized using a sol–gel self-propagation combustion method and annealing process. Computer simulation technology in CST MWS® accurately obtains the optimal thickness for the broadest-bandwidth MWA. The results demonstrated that the minimal reflection loss (RLmin) of the coral-like nano-PCF was −61.4 dB at 13.4 GHz with a thickness of 1.96 mm. Further optimization revealed that the effective absorbing bandwidth (EAB) of the coral-like nano-PCF was 6.4 GHz with a thickness of 1.74 mm, and the RL curve obtained from the simulation was in good agreement with the corresponding RL curve obtained experimentally. The strategy provides a new approach for the accurate design of broad-bandwidth MWAs.
研究领域:
材料科学
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电磁工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Lijuan Chen,Fan Chen,Gang Liu,Haoliang Lin,Yu Bao,Dongxue Han,Wei Wang,Yingming Ma,Baohua Zhang,Li Niu
Sweat pH is a critical indicator for evaluating human health. With the extensive attention on the wearable and flexible biosensing devices, the technology for the monitoring of human sweat can be realized. In this study, a sensitive, miniaturized, and flexible electrochemical sweat pH sensor was developed for the continuous and real-time monitoring of the hydrogen-ion concentration in human sweat. A flexible electrode was fabricated on the poly(ethylene terephthalate) (PET) substrate by a simple and low-cost screen-printing technology, which was based on the integration of fluoroalkyl silane-functionalized Ti3C2Tx (F–Ti3C2Tx) and the polyaniline (PANI) membrane technology instead of the traditional ion-sensitive membrane. The surface functionalization strategy for Ti3C2Tx with perfluorodecyltrichlorosilane can provide environmental stability. Functionalized Ti3C2Tx (F–Ti3C2Tx) was doped with PANI to obtain improved responsiveness, sensitivity, and reversibility. The constructed microsize, portable, and wearable F–Ti3C2Tx/PANI pH sensor aimed to real-time monitor the pH value of human sweat during exercise. On-body sweat pH monitoring for females and males, respectively, exhibited high accuracy and continuous stability compared with ex situ analyses. This study thus offers a facile and practical solution for developing a highly reliable MXene-based mini-type pH sensor to realize the online monitoring of human sweat pH.
研究领域:
材料科学
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可穿戴技术
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生物医学工程
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电化学
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传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2018
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IF 5.116
Qian Wang,Liang Shao,Zhonglei Ma,Juanjuan Xu,Ying Li,Caiyun Wang
Metal-Organic Frameworks (MOFs) have attracted increasing attention in the field of energy storage owing to their high porosity, high specific surface area, high charge storage. However, the poor conductivity in most MOFs largely hinders their electrical properties. In this work, we developed an effective strategy to grow the conductive polyaniline (PANI) inside the pores of MIL-101 (labeled as PANI/MIL-101) to form a fixed interpenetrating network structure. The electron-rich imine group in PANI is chelated with the coordinatively unsaturated metal sites (CUS) in MIL-101 to form a relatively strong bonded complex and through other synergistic effects to enhance the conductivity and electrochemical properties. The resultant PANI/MIL-101 exhibited a superior high capacitance of 1197 F g −1 (i.e., 957.6C g −1 ) at 1 A g −1 in constant current charge and discharge test. The assembled flexible solid-state supercapacitor showed a favorable specific capacitance, power density and good cycling stability (a 81% capacitance retention rate over 10,000 cycles). It also demonstrates a good flexibility, as evidenced by a small capacitance loss of 10% after being subject to 1000 bending cycles at 180°. The PANI/MIL-101 nanocomposite showed great potential in energy storage device.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 43
·24325-24335
·
IF 12.732
Longwei Li,Lanshuang Zhang,Wenbin Guo,Caiyun Chang,Jing Wang,Zifeng Cong,Xiong Pu
The rechargeable aqueous Zn battery is promising for next-generation wearable energy storage devices, due to its outstanding safety and low cost. Herein, we report a high-performance dual-ion Zn battery with both cations and anions hosted in the polyaniline (PANI) cathode. Of special interest is that a polyzwitterionic hydrogel electrolyte is specifically designed to regulate both the anion and cation transport, which originates from the strong electrostatic interaction between polyzwitterions with counter free ions. The ion-conducting and mechanical properties are then optimized by adjusting the polyzwitterionic content in the hydrogel networks. The intrinsic regulated anion/cation transport channels result in stable and uniform plating/stripping behaviors of the Zn metal anode, and meanwhile promote the cation/anion hosting reaction in the PANI cathode. These synergistic effects provide the Zn/PANI battery with excellent electrochemical performances, achieving a capacity of 102.5 mA h g−1 and a high retention rate of 87.5% after 600 cycles at 5 A g−1. Furthermore, a solid-state pouch cell is prepared for wearable devices with demonstrated excellent electrochemical performances, high flexibility and safety.
研究领域:
能量存储
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材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Haipeng Dong,Xiaowei Li,Yu Liu,Wanying Cheng,Xinghua Li,Dongxiao Lu,Changlu Shao,Yichun Liu
Wearable gas sensors have drawn great attention for potential applications in health monitoring, minienvironment detection, and advanced soft electronic noses. However, it still remains a great challenge to simultaneously achieve excellent flexibility, high sensitivity, robustness, and gas permeability, because of the inherent limitation of widely used traditional organic flexible substrates. Herein, an electrospinning polyacrylonitrile (PAN) nanofiber network was designed as a flexible substrate, on which an ultraflexible wearable gas sensor was prepared with in situ assembled polyaniline (PANI) and multiwalled carbon nanotubes (MWCNTs) as a sensitive layer. The unique nanofiber network and strong binding force between substrate and sensing materials endow the wearable gas sensor with excellent robustness, flexibility, and gas permeability. The wearable sensor can maintain stable NH3 sensing performance while sustaining extreme bending and stretching (50% of strain). The Young’s modulus of wearable PAN/MWCNTs/PANI sensor is as low as 18.9 MPa, which is several orders of magnitude smaller than those of reported flexible sensors. The water vapor transmission rate of the sensor is 0.38 g/(cm2 24 h), which enables the wearing comfort of the sensor. Most importantly, due to the effective exposure of sensing sites as well as the heterostructure effect between MWCNTs and PANI, the sensor shows high sensitivity to NH3 at room temperature, and the theoretical limit of detection is as low as 300 ppb. This work provides a new avenue for the realization of reliable and high-performance wearable gas sensors.
研究领域:
材料科学
·
纳米技术
·
可穿戴技术
·
传感器技术
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）