ACS Applied Electronic Materials最新文献

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Planar Polymer Light-Emitting Electrochemical Cells with Ring-Shaped Bipolar Electrodes 具有环形双极电极的平面聚合物发光电化学电池
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-10-01 DOI: 10.1021/acsaelm.5c01646
Abhishake Goyal,  and , Jun Gao*, 
{"title":"Planar Polymer Light-Emitting Electrochemical Cells with Ring-Shaped Bipolar Electrodes","authors":"Abhishake Goyal,&nbsp; and ,&nbsp;Jun Gao*,&nbsp;","doi":"10.1021/acsaelm.5c01646","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01646","url":null,"abstract":"<p >Polymer light-emitting electrochemical cells are demonstrated with circular driving electrodes and ring-shaped bipolar electrodes. The microfabricated electrode patterns enable the formation of seven to forty-nine concentric light-emitting rings across a large gap between the circular driving electrodes. Cells with BPEs exhibit vastly faster cell activation and much greater peak cell current. Cell activation in a PLEC constitutes <i>in situ</i> electrochemical doping and the formation of a light-emitting p–n junction. After junction formation, the PLEC can be discharged to produce an open-circuit voltage (<i>V</i><sub>OC</sub>). Herein, we demonstrate that the discharging open-circuit voltage is directly proportional to the number of BPEs introduced and the number of junctions formed. A 49-junction cell exhibits a record-high discharging <i>V</i><sub>OC</sub> of 98.5 V. Moreover, the activated cells can be frozen and operated as photovoltaic cells when exposed to light. Once again, a linear relation is observed between the photovoltaic <i>V</i><sub>OC</sub> and the number of activated junctions. The 49-junction cell exhibits a photovoltaic <i>V</i><sub>OC</sub> of 47.5 V, which increases to 64 V after partial dedoping to remove microshorts. These record-high <i>V</i><sub>OC</sub>s are contributed by the multiple p–n junctions formed in series across the BPEs. This study showcases the versatility of polymer light-emitting electrochemical cells in both device configurations and functionalities. The planar cell electrode pattern is highly scalable. This device configuration offers potential for an all-in-one device that can generate, store, and output electrical energy with variable voltage, eliminating the need for additional wiring.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"9227–9232"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Self-Powered Synaptic Device Based on InGaO Nanowires for Humanoid Robot Learning 基于InGaO纳米线的自供电突触装置用于人形机器人学习
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-30 DOI: 10.1021/acsaelm.5c01411
Rui Xu, , , Junyi Li, , , Tianxiang Wang, , , Yilin Shen, , , Liubin Yang, , , Yiping Shi, , , Linrui Cheng, , , Jianya Zhang*, , and , Yukun Zhao*, 
{"title":"A Self-Powered Synaptic Device Based on InGaO Nanowires for Humanoid Robot Learning","authors":"Rui Xu,&nbsp;, ,&nbsp;Junyi Li,&nbsp;, ,&nbsp;Tianxiang Wang,&nbsp;, ,&nbsp;Yilin Shen,&nbsp;, ,&nbsp;Liubin Yang,&nbsp;, ,&nbsp;Yiping Shi,&nbsp;, ,&nbsp;Linrui Cheng,&nbsp;, ,&nbsp;Jianya Zhang*,&nbsp;, and ,&nbsp;Yukun Zhao*,&nbsp;","doi":"10.1021/acsaelm.5c01411","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01411","url":null,"abstract":"<p >Inspired by the human brain, self-powered synaptic devices hold substantial promise in the fields of storage, learning, and computation, hence qualifying as indispensable constituents for building neuromorphic computing systems. In this work, a self-powered synaptic device based on InGaO nanowires is proposed and demonstrated successfully. By excitation of deep ultraviolet (DUV) light, this synaptic device can simulate the double-spike promotion, spike timing plasticity, and memory learning ability of biological synapses. Among them, the incident light, electrodes, and photogenerated carriers correspond to the action potentials, pre/postsynaptic membranes, and neurotransmitters of biological synapses, respectively. With an ultrahigh paired-pulse facilitation index of 185%, the memristor synapse shows an excellent learning performance under self-powered conditions. Moreover, the application potential of the self-powered artificial synaptic device is demonstrated by the successful manipulation of a humanoid intelligent robot. The control commands coming from the self-powered memristor synapse can drive the humanoid robot to perform the corresponding actions, which shows a unique “learning–forgetting–relearning” ability. In an artificial neural network, the synaptic device displays the ability in effective image denoising and a high image recognition accuracy surpassing 93%, indicating its robust learning and cognitive potential. Therefore, this study not only demonstrates the great potential of nanowire-based synaptic devices in the field of intelligent robotics but also opens a fresh avenue for the development of neuromorphic computing technologies and artificial intelligence systems requiring ultralow energy consumption.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"9056–9064"},"PeriodicalIF":4.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compatibility of Hard Carbon Anode in Li/Na-Ion Batteries: Precursor and Performance Insights 硬碳阳极在锂/钠离子电池中的相容性:前驱体和性能洞察
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-30 DOI: 10.1021/acsaelm.5c01488
Prachi Kumari, , , Rupa Das, , , Kundan Kumar, , and , Rajen Kundu*, 
{"title":"Compatibility of Hard Carbon Anode in Li/Na-Ion Batteries: Precursor and Performance Insights","authors":"Prachi Kumari,&nbsp;, ,&nbsp;Rupa Das,&nbsp;, ,&nbsp;Kundan Kumar,&nbsp;, and ,&nbsp;Rajen Kundu*,&nbsp;","doi":"10.1021/acsaelm.5c01488","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01488","url":null,"abstract":"<p >Hard carbon (HC) materials have emerged as promising anodes for sodium-ion batteries (SIBs) due to their low cost, disordered structure, and high reversible capacity. Moreover, several studies also prove that HC is compatible with lithium-ion batteries (LIBs), too. Although the demand for sustainable, low-cost, and high-performance energy storage systems is strong, HC is a potential anode material. This perspective includes a critical review of various precursors and their role in structural and electrochemical performances. Especially, coal precursors have been more emphasized in this review due to their widespread availability and contain naturally occurring doping elements (such as N and S). Furthermore, strategies for enhancing the performance, emerging trends, and future direction of research have also been critically reviewed, which have paved the pathways for high-performance and sustainable anode development for both LIBs and SIBs.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"8800–8820"},"PeriodicalIF":4.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Asymmetric Electrode-Driven Self-Powered Photodetector Using Cu2-xS Film 基于Cu2-xS薄膜的非对称电极驱动自供电光电探测器
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-26 DOI: 10.1021/acsaelm.5c01539
Karthickraja Ramakrishnan, , , Y. Ashok Kumar Reddy, , and , B. Ajitha*, 
{"title":"Asymmetric Electrode-Driven Self-Powered Photodetector Using Cu2-xS Film","authors":"Karthickraja Ramakrishnan,&nbsp;, ,&nbsp;Y. Ashok Kumar Reddy,&nbsp;, and ,&nbsp;B. Ajitha*,&nbsp;","doi":"10.1021/acsaelm.5c01539","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01539","url":null,"abstract":"<p >Self-powered photodetectors through asymmetric contact modulation are a simple and efficient approach that has gained a lot of attention because they form an energy gradient in the band gap of the semiconductor. This energy gradient develops the self-assembly of the built-in electric field to separate the electron–hole pairs without any external bias, which facilitates long-term functioning of the device. Copper sulfide (Cu<sub>2-<i>x</i></sub>S) is a promising p-type semiconductor for visible-near-infrared photodetectors due to its tunable band gap and electrical properties. In this work, a Cu<sub>2-<i>x</i></sub>S-based metal–semiconductor–metal (MSM) photodetector with asymmetric electrodes (Au/Cu<sub>2-<i>x</i></sub>S/Ag) is fabricated, and its photodetector properties are measured under visible and near-infrared (NIR) light illuminations. The fabricated Au/Cu<sub>2-<i>x</i></sub>S/Ag structured device shows responsivity of 5.66 × 10<sup>–3</sup> A/W and 11.24 × 10<sup>–3</sup> A/W under visible (λ = 530 nm) and NIR (λ = 980 nm) light illuminations, respectively, even at zero bias. Finally, the obtained results attest that the fabricated self-powered photodetector is highly suitable for modern self-powered optoelectronic applications.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"9146–9158"},"PeriodicalIF":4.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stable, Breathable, and Self-Supporting Electronic Skin for Human Physiological Signal Monitoring 稳定、透气、自给的人体生理信号监测电子皮肤
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-26 DOI: 10.1021/acsaelm.5c01370
Wenzheng Sun, , , Xing Liu, , , Houchao Zhang, , , Zhenghao Li, , , Rui Wang, , , Hongke Li, , , Jianjun Yang, , , Xiaoyang Zhu*, , and , Hongbo Lan*, 
{"title":"Stable, Breathable, and Self-Supporting Electronic Skin for Human Physiological Signal Monitoring","authors":"Wenzheng Sun,&nbsp;, ,&nbsp;Xing Liu,&nbsp;, ,&nbsp;Houchao Zhang,&nbsp;, ,&nbsp;Zhenghao Li,&nbsp;, ,&nbsp;Rui Wang,&nbsp;, ,&nbsp;Hongke Li,&nbsp;, ,&nbsp;Jianjun Yang,&nbsp;, ,&nbsp;Xiaoyang Zhu*,&nbsp;, and ,&nbsp;Hongbo Lan*,&nbsp;","doi":"10.1021/acsaelm.5c01370","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01370","url":null,"abstract":"<p >Electronic skin has broad application prospects in wearable electronics, human–computer interaction, and biomedical fields due to its conductive, conformable, breathable, and stretchable properties. However, flexible-substrate electronic skin hinders breathability due to the high density of polymer materials and substrate-free structures, and it is prone to breakage due to insufficient mechanical constraints, limiting long-term wearing reliability. This article proposes an electric field-driven micro-3D printing electroplating collaborative strategy to construct a fully wrapped core–shell self-supporting metal mesh electronic skin that is substrate-free, highly breathable, and highly stable. The flexibility and high-resolution deposition capability of electric field-driven micro-3D printing technology have enabled the preparation of a fine-scale silver paste conductive network, and the integration with electroplating technology enhances the conductivity of the silver paste conductive network and provides omnidirectional support and protection, making it exceptionally stable. At the same time, the substrate-free low fill factor (500 nm wavelength, transmittance of 97.2%) design achieves high breathability, no stuffiness or discomfort when worn, and a stable structure after soaking/rinsing. Experimental results demonstrate that the resistance of a grid with a line spacing of 0.6 mm only changes by 5.5% after 1000 bends with a radius of 4.5 mm, and the resistance change rate in an alkaline environment after 72 h is 7.67%. It was further applied to facial smile recognition and wrist/knee movement monitoring, achieving high-fidelity physiological signal acquisition and solving the measurement error problem of traditional device contact decoupling. This work overcomes the bottleneck of balancing breathability and stability in electronic skins, providing ideas for the design of high-performance wearable electronic skins.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"9012–9022"},"PeriodicalIF":4.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic Fluorine and Zirconium Codoping for High-Mobility and Bias-Stable ZnO Thin-Film Transistors 高迁移率和偏置稳定ZnO薄膜晶体管的协同氟锆共掺杂
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-26 DOI: 10.1021/acsaelm.5c01578
Arqum Ali, , , Abul Tooshil, , , MD Redowan Mahmud Arnob, , , Woo-Seok Lee, , , Jaeho Lee, , , Rino Choi*, , , Jin Jang*, , and , Jeong-Hwan Lee*, 
{"title":"Synergistic Fluorine and Zirconium Codoping for High-Mobility and Bias-Stable ZnO Thin-Film Transistors","authors":"Arqum Ali,&nbsp;, ,&nbsp;Abul Tooshil,&nbsp;, ,&nbsp;MD Redowan Mahmud Arnob,&nbsp;, ,&nbsp;Woo-Seok Lee,&nbsp;, ,&nbsp;Jaeho Lee,&nbsp;, ,&nbsp;Rino Choi*,&nbsp;, ,&nbsp;Jin Jang*,&nbsp;, and ,&nbsp;Jeong-Hwan Lee*,&nbsp;","doi":"10.1021/acsaelm.5c01578","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01578","url":null,"abstract":"<p >Oxide semiconductors have attracted considerable attention for next-generation electronic applications because of their desirable optoelectronic properties. However, achieving both high performance and long-term stability in zinc oxide (ZnO)-based thin-film transistors (TFTs) is a key challenge. Herein, this issue was addressed using spray-coated ZnO TFTs with fluorine (F) and zirconium (Zr) codoping. The ZnO TFT with 5% Zr doping and a F treatment for 10 s exhibited a high saturation mobility of 31.65 cm<sup>2</sup>/V·s and a low subthreshold swing of 0.157 V/dec. The codoped TFT showed a superior bias stability (Δ<i>V</i><sub>TH</sub> = ∼0.1 V) under positive bias temperature stress compared to the undoped counterpart (Δ<i>V</i><sub>TH</sub> = ∼0.7 V). These results were attributed to synergistic Zr and F doping, where Zr passivates defects and F increases the free electron concentration. Therefore, F and Zr codoping can be a useful technique to produce more reliable and high-performance solution-processed oxide TFTs.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"9212–9218"},"PeriodicalIF":4.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sonochemical Synthesis of Submicrometer Ga-Based Particles for Cu-to-Cu Interconnection 亚微米镓基cu - cu互连粒子的声化学合成
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-26 DOI: 10.1021/acsaelm.5c01346
Tzu-hsuan Huang, , , Che-yu Yeh, , , Chih-han Yang, , , Yu-chen Liu, , and , Shih-kang Lin*, 
{"title":"Sonochemical Synthesis of Submicrometer Ga-Based Particles for Cu-to-Cu Interconnection","authors":"Tzu-hsuan Huang,&nbsp;, ,&nbsp;Che-yu Yeh,&nbsp;, ,&nbsp;Chih-han Yang,&nbsp;, ,&nbsp;Yu-chen Liu,&nbsp;, and ,&nbsp;Shih-kang Lin*,&nbsp;","doi":"10.1021/acsaelm.5c01346","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01346","url":null,"abstract":"<p >Heterogeneous integration has been the most important electronic packaging technology, with the emerging needs of miniaturization of electronic devices. Conventional solders are gradually unable to meet the requirements of advanced electronic interconnection, e.g., 3D IC and high-power devices, which are operated in extreme conditions. We previously proposed gallium (Ga)-based transient liquid phase bonding for forming face-centered cubic solid-solution joints without the formation of intermetallic compounds, which guarantees thermal stability and reliability. However, a scalable transfer technology and the associated material are required to realize its industrial applications. Herein, we synthesized Ga-based submicrometer particles (SMPs) by a sonochemical process as the filler material for Ga-based paste. With the Ga-based paste, high-strength, thermally stable, and low-resistance Cu-to-Cu bonding is achieved with a relatively low processing temperature and short bonding time. We demonstrated the potential and feasibility of a Ga-based SMP for high-performance Cu-to-Cu bonding.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"8969–8977"},"PeriodicalIF":4.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsaelm.5c01346","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gallic Acid-Hybridized Antioxidant MXene Ink for Printable Electronic Devices 可印刷电子器件用没食子酸杂化抗氧化MXene油墨
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-25 DOI: 10.1021/acsaelm.5c01420
Ruopu Wu, , , Wenwen Liu, , , Hongling Li, , and , Roland Yingjie Tay*, 
{"title":"Gallic Acid-Hybridized Antioxidant MXene Ink for Printable Electronic Devices","authors":"Ruopu Wu,&nbsp;, ,&nbsp;Wenwen Liu,&nbsp;, ,&nbsp;Hongling Li,&nbsp;, and ,&nbsp;Roland Yingjie Tay*,&nbsp;","doi":"10.1021/acsaelm.5c01420","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01420","url":null,"abstract":"<p >Printable two-dimensional (2D) transition metal carbide (MXene) inks have attracted significant attention due to their high intrinsic conductivity, excellent dispersibility in various solvents, and exceptional functional properties, such as high specific capacitance and sensing capabilities. However, susceptibility to oxidation of the existing MXene inks remains one of the key challenges, which severely compromises the long-term stability of printed devices, thereby limiting their broader applications. Herein, we propose an effective and facile strategy to formulate printable oxidation-resistant MXene inks through molecular-level interfacial coordination between MXene and gallic acid. The optimal MXene@gallic acid ink possesses high electrical conductivity (4239 S cm<sup>–1</sup>), high oxidation inhibition efficiency (&gt;10 times enhancement), remarkable environmental stability, and tunable rheological properties, which can be printed to create various electronic structures toward diverse applications. Encouragingly, the resulting dielectric-driven Joule heater not only exhibits faster temperature response at relatively low voltage but also shows enhanced cyclic stability as compared to pure MXene. Additionally, the printed wearable temperature sensor displays high sensitivity for temperature sensing, further demonstrating its applicability for printable flexible devices. Our methodology not only provides an effective strategy to address oxidation-degradation issues that exist in MXene-based electronics but also paves the path for the development of other oxidation-vulnerable nanomaterials toward printed electronics.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"9065–9072"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic Enhancement of Thermal Conductivity and Electromagnetic Shielding via Dual Cu···π and Cu–O Bond-Bridged Graphene/MXene Interfaces 双Cu···π和Cu - o键桥接石墨烯/MXene界面的热导率和电磁屏蔽协同增强
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-25 DOI: 10.1021/acsaelm.5c01644
Shikun Zhang, , , Jun Qian, , , Yu Qi Jun, , , Jia-Qi Bai, , , Jingshuai Chen*, , , Mingyuan Wu, , , Song Sun, , and , Chang-Jie Mao, 
{"title":"Synergistic Enhancement of Thermal Conductivity and Electromagnetic Shielding via Dual Cu···π and Cu–O Bond-Bridged Graphene/MXene Interfaces","authors":"Shikun Zhang,&nbsp;, ,&nbsp;Jun Qian,&nbsp;, ,&nbsp;Yu Qi Jun,&nbsp;, ,&nbsp;Jia-Qi Bai,&nbsp;, ,&nbsp;Jingshuai Chen*,&nbsp;, ,&nbsp;Mingyuan Wu,&nbsp;, ,&nbsp;Song Sun,&nbsp;, and ,&nbsp;Chang-Jie Mao,&nbsp;","doi":"10.1021/acsaelm.5c01644","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01644","url":null,"abstract":"<p >Polymer-based thermally conductive films face significant challenges related to interfacial thermal resistance, especially when required to deliver both efficient heat dissipation and electromagnetic interference (EMI) shielding in advanced electronic applications. In this study, we present a multifunctional composite system by incorporating copper-decorated hydroxylated graphene (Cu-GOH) and MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub><i>X</i></sub>) into a poly(vinylidene fluoride) (PVDF) matrix. The hybrid filler network is engineered through dual interfacial interactions: Cu···π bonding with the graphene framework and Cu–O coordination with the MXene surface, establishing continuous thermal and electrical transport pathways. At an optimized filler loading (22.5 wt % Cu-GOH and 2.5 wt % MXene), the composite achieves: (i) a through-plane thermal conductivity of 3.64 W·m<sup>–1</sup>·K<sup>–1</sup>, representing a 19.22-fold enhancement over pristine PVDF; (ii) an in-plane electrical conductivity of 6.44 × 10<sup>–4</sup> S·cm<sup>–1</sup>; and (iii) robust X-band EMI shielding effectiveness (≥25 dB across 8–12 GHz), exceeding military-grade requirements. Additionally, the hierarchically organized filler architecture enhances mechanical integrity, addressing the common trade-offs between functionality and durability in polymer composites. These findings demonstrate the potential of Cu-GOH/MXene/PVDF composites for integration into high-performance thermal management and EMI shielding components in aerospace systems, satellite communications, and next-generation renewable energy technologies.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"9239–9248"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Direct Ink Writing of Flexible Conductive Polymer Aerogels with Exceptional Electromagnetic Shielding Efficiency 具有优异电磁屏蔽效率的柔性导电聚合物气凝胶的直接墨水书写
IF 4.7 3区 材料科学
ACS Applied Electronic Materials Pub Date : 2025-09-25 DOI: 10.1021/acsaelm.5c01221
Terek Li, , , Li Ma, , , Yuhang Huang, , , Chongda Wang, , , Weiqing Fang, , , Chul B Park, , , Eugenia Kumacheva, , and , Hani E. Naguib*, 
{"title":"Direct Ink Writing of Flexible Conductive Polymer Aerogels with Exceptional Electromagnetic Shielding Efficiency","authors":"Terek Li,&nbsp;, ,&nbsp;Li Ma,&nbsp;, ,&nbsp;Yuhang Huang,&nbsp;, ,&nbsp;Chongda Wang,&nbsp;, ,&nbsp;Weiqing Fang,&nbsp;, ,&nbsp;Chul B Park,&nbsp;, ,&nbsp;Eugenia Kumacheva,&nbsp;, and ,&nbsp;Hani E. Naguib*,&nbsp;","doi":"10.1021/acsaelm.5c01221","DOIUrl":"https://doi.org/10.1021/acsaelm.5c01221","url":null,"abstract":"<p >In this work, a strategy for synthesizing highly conductive poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) aerogel films through additive manufacturing, specifically using the direct ink writing (DIW) method, is demonstrated. This approach marks the first application of pure PEDOT:PSS aerogels in electromagnetic interference (EMI) shielding, employing PEDOT:PSS as the sole matrix material without additives. The synthesis enabled by DIW achieves aerogels with over 90% porosity and an electrical conductivity surpassing 10 S cm<sup>–1</sup>. The films exhibit outstanding EMI shielding effectiveness in the X and Ku bands, achieving shielding effectiveness above 100 dB and specific shielding effectiveness approaching 15,000 dB cm<sup>2</sup> g<sup>–1</sup>. The aerogels also show remarkable environmental resilience, maintaining their conductive properties after extensive exposure to high humidity, multiple water soak and dry cycles, and temperatures up to 200 °C without degradation in shielding efficiency. Additionally, by modifying the hydrogel precursor formulations, the aerogels’ mechanical flexibility is enhanced with minimal impact on their EMI shielding performance. This research not only underscores the capabilities of PEDOT:PSS aerogels as a viable material for EMI shielding but also highlights the critical role of additive manufacturing via DIW in developing adaptable and robust shielding solutions for diverse environmental conditions.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"7 19","pages":"8871–8881"},"PeriodicalIF":4.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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