Advanced Functional Materials最新文献

{"title":"Side-Chain-Free Benzothiadiazole-Based Thermoelectric Polymers with Enhanced Electrical Conductivity and Thermal Stability by Acid Cleavage","authors":"Fei Zhong, Yuyao Zheng, Jian Song, Lidong Chen, Hui Li","doi":"10.1002/adfm.202507113","DOIUrl":"https://doi.org/10.1002/adfm.202507113","url":null,"abstract":"The presence of insulating side chains in conductive polymers often impedes intermolecular interactions and localizes charge carriers, thereby deteriorating charge transport properties. In this study, side-chain-free benzothiadiazole (BT)-based conductive polymers are synthesized using a thermal-assisted rapid acid cleavage (TRAC) method, which achieves complete removal of silane side chains from the parent polymer and preliminary doping by trifluoromethanesulfonic (TfOH). Remarkably, compared to the parent polymers SiFBT-TT and SiBT-TT, the Hall mobility of FeCl₃-doped FBT-TT increased by sixfold (from 0.16 ± 0.02 to 0.93 ± 0.03 cm² V⁻¹ s⁻¹), while that of FeCl₃-doped BT-TT exhibited a 15-fold enhancement (from 0.11 ± 0.05 to 1.60 ± 0.17 cm² V⁻¹ s⁻¹), due to the intensified backbone packing upon side chain cleavage. Consequently, the FeCl₃-doped BT-TT exhibited an exceptional electrical conductivity of up to 730 S cm⁻¹ and a power factor of 81 µW m⁻¹ K⁻², representing a new benchmark for BT-based conductive polymers. Additionally, the power factors of the side-chain-free polymers remained stable even after prolonged heating at 100 °C for 1000 min, attributed to the strengthened interactions between the highly delocalized backbones and dopant anions. This work provides a new approach to design side-chain-free thermoelectric polymers with both high electrical conductivity and outstanding thermal stability.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"16 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Robust Neuromorphic Computing Enabled by Femtosecond Laser-Modulated Divergent Ion Dynamics in CuInP2S6","authors":"Jin Peng, Guisheng Zou, Jinpeng Huo, Zehua Li, Tianming Sun, Bin Feng, Chengjie Du, Jiali Huo, Lei Liu","doi":"10.1002/adfm.202504334","DOIUrl":"https://doi.org/10.1002/adfm.202504334","url":null,"abstract":"Inspired by the high efficiency and robustness of human brains, ion-based artificial synaptic devices have been widely explored for neuromorphic computing. However, achieving stability and reliable functionality without additional components remains challenging due to the inherent variability of ion dynamics. Herein, homeostatic plasticity is demonstrated in a CuInP₂S₆ (CIPS) artificial synapse via femtosecond laser treatment. The laser-induced modulation exhibits state-dependent effects, enhancing ionic mobility in the low conductance state (activation) and redistributing ions in the high conductance state (inhibition). The activation effect facilitates short-term plasticity by improving postsynaptic current, while the inhibition effect enhances long-term stability through reducing switching variability. Furthermore, tunable neuromorphic ion modulation in a two-terminal CIPS device is synergistically achieved through the combined influence of an electric field, optical illumination, and femtosecond laser treatment. Finally, a spiking neural network simulation based on a single representative device is demonstrated, achieving an improvement in the accuracy of Modified National Institute of Standards and Technology (MNIST) handwritten digit recognition from 92.5% to 98.2% via femtosecond laser modulation. This work presents a novel strategy for efficiently manipulating ion dynamics in 2D van der Waals ferroionic materials, contributing to the development of adaptive and robust neuromorphic computing systems.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"7 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thiol-Modulation-Induced Mesoporous Nanosheets with an Alloy/Intermetallic Heterophase for Efficient Electrochemical Ethylene Glycol-Assisted Water Splitting","authors":"Fukai Feng, Sumei Han, Chaoqun Ma, Xiao Ma, Gang Lin, Huaifang Zhang, Caihong He, Xinran Jiao, Xiangmin Meng, Wenbin Cao, Chongyi Ling, Lijie Zhu, Jing Xia, Qinbai Yun, Qipeng Lu","doi":"10.1002/adfm.202506541","DOIUrl":"https://doi.org/10.1002/adfm.202506541","url":null,"abstract":"Ligand modification has been widely utilized to tune the coordination environment of active sites in noble metal-based electrocatalysts to enhance their catalytic activity and selectivity. However, the ligand-induced structure transition of the catalyst and its effect on performance is not clear. In this study, a thiol modification strategy is developed to prepare sulfur-capped mesoporous PtPbBi nanosheets (S-PtPbBi MNSs) with an alloy/intermetallic compound heterophase and inhomogeneous tensile strain (≈3%). The obtained S-PtPbBi MNSs exhibit excellent electrocatalytic performance for ethylene glycol oxidation reaction (EGOR), achieving a Faradic efficiency of up to 92% in converting EG to glycolic acid. In EG-assisted electrochemical water splitting, S-PtPbBi MNSs only require a low cell voltage of 0.60 V to achieve a current density of 10 mA cm⁻². The anion exchange membrane electrolyzer utilizing S-PtPbBi MNSs catalyst can drive a current density of 500 mA cm⁻² at 1.63 V, along with exceptional stability for 200 h. Density functional theory calculations reveal that thiol modification facilitates the adsorption of reactants and enhances the electron transfer between the catalyst and key intermediate. This work provides deep insights into ligand modification-induced construction of novel catalysts and creates new opportunities for small molecule-assisted water splitting for efficient production of hydrogen.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"3 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Performance Perovskite Solar Cells via Synergistic Grating Microstructures and Dynamic-Bonded Ion-Conductive Elastomers","authors":"Xianfei Cao, Yubo Chen, Yong Qi, Tong Hu, Zhengyang Gao, Haoxiang Zhang, Fengyang Yu, Shengzhong Liu, Shufen Zhang","doi":"10.1002/adfm.202506516","DOIUrl":"https://doi.org/10.1002/adfm.202506516","url":null,"abstract":"Perovskite solar cells (PSCs) have emerged as a prominent focus in energy research owing to their remarkable power conversion efficiency (PCE). However, the realization, maintenance, and even repair of the high efficiency of perovskite solar cells are still difficult research issues. Herein, a synergistic strategy of grating microstructures and ion-conducting elastomers (ICE) based on dynamic hindered urea-carbamate bonds is proposed to realize high-efficiency and long-term stable PSCs. The grating microstructured PbI₂ (G-PbI₂) can initially optimize the crystallization behavior of perovskite, based on the fact that the introduction of ICE in PbI₂ achieves 25.61% efficient PSCs. The ICE featuring graded hindered urea-carbamate dynamic bonds demonstrates triple-functionality: i) Abundant carbonyl (-C(O)-) coordination sites within the ICE strongly interact with PbI₂, enhancing perovskite crystallization kinetics; ii) The ICE intrinsic conductivity facilitates efficient charge carrier transport and extraction at grain boundaries and interfaces; iii) The moisture-responsive behavior of hindered urea bonds coupled with dynamic bond reorganization endows the device with exceptional hydrothermal stability (T₈₀>1500 h), and even more interestingly, ICE-containing devices can be simply heat-treated to recover photovoltaic performance. A synergistic strategy of ICE based on hierarchical dynamic covalent networks and microstructures opens new insights into the field of constructing, maintaining, and restoring high-efficiency PSCs.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"7 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Triad of Passivation Strategies for the Fabrication of Perovskite Solar Cells with Mitigated Defects and Enhanced Efficiency","authors":"Zhichao Lin, Jiande Lin, Zhehui Zhu, Tingxia Yan, Min Zhang, Hao Yao, Mengyao Sun, Xinhua Ouyang","doi":"10.1002/adfm.202502170","DOIUrl":"https://doi.org/10.1002/adfm.202502170","url":null,"abstract":"In the rapidly evolving field of perovskite solar cells (PSCs), addressing defects poses a significant challenge due to their diverse nature and varying patterns based on location. Effective defect control is crucial for achieving high efficiency in PSCs. In this work, a synergistic triad of passivation strategy was proposed, termed the “three-in-one” approach. This method incorporates a multifunctional molecule, PTR, into the PbI₂ precursor solution during the two-step fabrication of perovskite film. The carboxyl group (─COOH) of PTR interacts with SnO₂ to rectify oxygen vacancies on its surface, alleviating residual stress at buried interfaces. Due to its large volume, PTR is confined to grain boundaries (GBs) and gradually diffuses towards upper/ buried interfaces. Functional groups such as carbonyl (C═O), sulfurcarbon (C═S), and carboxyl (COOH) play key roles in mitigating defects at GBs and both interfaces. Additionally, PTR acts as an interfacial bridging that connects electron and hole transport layers. Consequently, the power conversion efficiency (PCE) of the optimal device (n-i-p configuration) improved significantly from 23.04% (pristine) to 25.77%, with a certified value of 25.44%. The introduction of this triad passivation strategy effectively addresses defects at GBs and both interfaces, paving the way for enhanced performance in PSCs.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"140 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achievements and Challenges in Carbon-Free Dual-Atom Catalysts for Electrocatalysis","authors":"Luoluo Qi, Jingqi Guan","doi":"10.1002/adfm.202500873","DOIUrl":"https://doi.org/10.1002/adfm.202500873","url":null,"abstract":"Carbon-free dual-atom catalysts (CFDACs) are beginning to make their presence in the field of electrocatalysis due to their unique properties and structures that are different from those of carbon-based DACs, which are endowed with different activity, selectivity, and stability. Currently, some advances are made in the study of CFDACs, including structure-performance relationships of metal-support interaction, theoretical study combined with experiments, electrocatalytic applications with potential catalytic mechanisms, and design strategies to achieve highly active electrocatalytic performance. Herein, the perception of the structure-performance relationships of CFDACs is first elaborated in terms of carbon-free substrates and dual-atom sites, then briefly summarizes advanced characterization techniques, theoretical study, and energy storage and conversion applications, and highlights the strategies to realize the design of high-performance CFDACs in terms of vacancy anchoring, strain regulation, and alloying, and finally put forward the personal viewpoints on the current challenges and future development of CFDACs.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"8 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Approach to Implementing Artificial Thalamic Neurons with Ferroelectric Transistors","authors":"Andreas Grenmyr, Jiayuan Zhang, Jingxuan Sun, Kenta Moto, Stefan Wiefels, Seong-Ryong Koh, Detlev Grützmacher, Qing-Tai Zhao","doi":"10.1002/adfm.202500512","DOIUrl":"https://doi.org/10.1002/adfm.202500512","url":null,"abstract":"Artificial thalamic neurons offer significant potential for medical treatment and neuromorphic computing applications. Their implementation with CMOS technology typically requires a large number of transistors and capacitors, leading to increased power consumption and reduced integration density. This work presents an artificial thalamic relay neuron using only five identical ferroelectric Schottky barrier field-effect transistors (Fe-SBFETs) based on silicon CMOS technology, forming a double inverter and a sensing transistor. The ambipolar switching behavior of Fe-SBFETs not only supports both excitatory and inhibitory synapses with a single device but also allows for the construction of inverters with just two identical transistors. The fabricated thalamic neuron exhibits leaky integrate-and-fire-or-burst (LIFB) functionality with self-resetting capabilities. The artificial neuron enables the device to generate spikes with a reset time of 10 µs, a spike frequency of 8.3 kHz, and an average energy loss of 40 pJ spike⁻¹. The successful implementation of artificial neurons is able to develop low-power, compact neural networks with relatively high operating frequencies.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"72 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling Anionic Charge Disproportionation, Charge Density Wave and Their Anomalous Interplay in 1T-IrS2","authors":"Wei Wang, Ao Li, Zhengjie Wang, Chen Si","doi":"10.1002/adfm.202424722","DOIUrl":"https://doi.org/10.1002/adfm.202424722","url":null,"abstract":"Understanding the interplay between charge density wave (CDW) and charge disproportionation (CD) is essential for unraveling the electronic behavior and phase transition mechanisms of materials. Typically, a CDW phase transition introduces inequivalent cation sites, resulting in a CD state. Here, the presence of an in-plane 2 × 1 CDW in monolayer 1T-IrS₂​, as well as in its bilayer and bulk phases with traditional AA stacking is reported here for the first time. However, the CDW does not induce a CD state, as it is characterized by the complete in-plane dimerization of equivalent Ir⁴⁺ ions. Remarkably, when the stacking order of 1T-IrS₂ is altered, a CD state featuring interlayer S-S dimerization emerges, leading to a metal-insulator transition and suppressing the CDW instability. It is further revealed that the CD state arises from asymmetric Ir-S charge transfer induced by S-S dimerization, and thus exhibits Ir³⁺, S¹⁻, and S²⁻ effective valence states. Therefore, the CD state in 1T-IrS₂ represents a unique anionic CD, in contrast to the traditional cationic CD. This work underscores the critical role of stacking order in uncovering novel quantum phases in layered materials and provides new insights into the correlation between CD and CDW states.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"41 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to “Microfluidic Spinning of Cell-Responsive Grooved Microfibers”","authors":"Xuetao Shi, Serge Ostrovidov, Yihua Zhao, Xiaobin Liang, Motohiro Kasuya, Kazue Kurihara, Ken Nakajima, Hojae Bae, Hongkai Wu, Ali Khademhosseini","doi":"10.1002/adfm.202509107","DOIUrl":"https://doi.org/10.1002/adfm.202509107","url":null,"abstract":"<p><i>Adv. Funct. Mater</i>., <b>2015</b>, <i>25</i>, 1404531</p>\u0000<p>DOI: 10.1002/adfm.201404531</p>\u0000<p>Concerns were raised by a third party regarding overlapping image panels within the article (Figure 5A,B). The authors acknowledged the image compilation error, nevertheless, due to the elapsed time since publication, the original data were not available.</p>\u0000<p>The authors have repeated the experiment based on the published methods and compiled a new panel showing the viability of encapsulated C2C12 cells at day 7. The new data confirmed the same trends as observed before, therefore the experimental results and the corresponding conclusions of the paper remain unaffected. The authors apologize for this mistake.</p>\u0000<p>The corrected Figure 5 A,B is below:</p>\u0000<p><img alt=\"image\" loading=\"lazy\" src=\"/cms/asset/1a605820-d1d1-40e8-baa7-0be1eb99d282/adfm202509107-gra-0001.png\"/></p>\u0000<p><b>Figure 5</b>. Viability of cells encapsulated in 30% GelMA and 4% Alginate microstructured fibers. A,B) Fluorescent images of C2C12 myoblast cells encapsulated at high cell density (12 × 10 6 cells in 1 mL solution) in 30% GelMA and 4% alginate fibers stained with Calcein AM (living cells, green) and ethidium homodimer-1 (dead cells, red) at day 7 of culture.</p>\u0000<p>In addition, the figure caption of Figure 4 has been revised, as follows:</p>\u0000<p>“Cell alignment induced by the grooved/ridged microstructure on GelMA fibers. A,B) Fluorescent images of living cells (green) stained with Calcein AM at day 3 of culture. No dead cells (red) stained with ethidium homodimer-1 were observed. Panel B is a representative image of higher magnification and does not correspond to the exact location marked red in panel A. C,D) Fluorescent images showing cell orientation of F-actin (red) and cell nuclei (blue) stained, respectively, with Alexa Fluor 546-phalloidin and DAPI. E) FE-SEM image showing the cell colonization and alignment along the grooves of the GelMA fiber. F) Cell alignment quantification for cells cultured on 30% GelMA microstructured fibers and 30% GelMA fibers with smooth surfaces. Error bars represent standard error.”</p>","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"48 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Crystallinity Wrinkled Hard Carbon via Molecular-Level Anchoring Glucose Molecules with Cooperative-Assembly of Intermolecular Hydrogen Bonds for Sodium-Ion Batteries (Adv. Funct. Mater. 17/2025)","authors":"Yanni Wang,&nbsp;Wenwen Li,&nbsp;Chengxiang Huang,&nbsp;Zhou Jiang,&nbsp;Fuxi Liu,&nbsp;Xinyan Zhou,&nbsp;Wei Zhang,&nbsp;Weitao Zheng","doi":"10.1002/adfm.202570102","DOIUrl":"https://doi.org/10.1002/adfm.202570102","url":null,"abstract":"<p><b>Intermolecular Hydrogen Bonds</b></p><p>In article number 2420580, Wei Zhang and co-workers establish an innovative strategy for synthesizing hard carbon materials with high crystallinity and highly exposed surfaces by leveraging the anchoring effect of molecularly bonded hydrogen bonds in carbon precursor molecules. This approach allows for precise control of intermolecular forces and thereby enables highly predictable synthesis of innovative materials.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"35 17","pages":""},"PeriodicalIF":18.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.202570102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}