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Tailoring Interfacial Interactions Enables Ultrafast Construction of Conductive Cellulose Film Toward Superior Solar Steam Generation, Wearable Strain Sensor, and Flexible Thermoelectric Power Generator 定制界面相互作用使导电纤维素膜的超快速构建成为优越的太阳能蒸汽产生,可穿戴应变传感器和柔性热电发电机
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-09 DOI: 10.1002/adfm.202530684
Fei-Fei Chen, Zhichao Wu, Xiaolin Lyu, Rilong Yang, Xiaozheng Su, Hong Zhou, Yan Yu, Kefeng Lin
Cellulose films are known for their sustainability, high flexibility, and outstanding mechanical strength; however, they often exhibit limited optical, electrical, and thermal properties. Conventional modification strategies, such as carbonization or physical blending with conductive materials, tend to be energy-intensive and often require specialized equipment or controlled environments. In this study, we report an ultrafast coating of PEDOT:PSS onto a unique cellulose/hydroxyapatite substrate, achieved within just 5 s under ambient conditions without the need for any equipment. The incorporation of hydroxyapatite nanowires between cellulose fibers and PEDOT:PSS enhances the interfacial bonding strength by 2.8 times via multiple interactions, enabling such an ultrafast coating process. The resulting composite films effectively combine the excellent water affinity and mechanical robustness of the cellulose/hydroxyapatite substrate with the superior optical, electrical, and thermal properties of the PEDOT:PSS coating. Based on these advantages, we demonstrate multifunctional devices, including solar-driven water evaporators, wearable strain sensors, and flexible thermoelectric generators, that exhibit competitive performance metrics: a water evaporation rate of 2.02 kg m−2 h−1, salt rejection (20 wt.% NaCl), stable and rapid sensing toward varying human movements, an electrical conductivity of 465 S m−1, and a Seebeck coefficient of 28.21 µV K−1.
纤维素薄膜以其可持续性、高柔韧性和出色的机械强度而闻名;然而,它们通常表现出有限的光学、电学和热性能。传统的改性策略,如碳化或与导电材料的物理混合,往往是能源密集型的,往往需要专门的设备或受控的环境。在这项研究中,我们报告了一种超快的PEDOT:PSS涂层在独特的纤维素/羟基磷灰石基体上,在环境条件下仅需5秒即可完成,无需任何设备。在纤维素纤维和PEDOT:PSS之间加入羟基磷灰石纳米线,通过多次相互作用,将界面结合强度提高了2.8倍,从而实现了这种超快的涂层过程。所得到的复合薄膜有效地结合了纤维素/羟基磷灰石基体优异的亲水性和机械坚固性,以及PEDOT:PSS涂层优越的光学、电学和热性能。基于这些优势,我们展示了多功能设备,包括太阳能驱动的蒸发器、可穿戴应变传感器和柔性热电发电机,这些设备表现出具有竞争力的性能指标:水蒸发速率为2.02 kg m−2 h−1,盐去除率(20 wt.% NaCl),对不同人体运动的稳定和快速传感,电导率为465 S m−1,塞贝克系数为28.21µV K−1。
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引用次数: 0
Thermo-Mechanically Recyclable Smart Textiles from Circularly Knitted Liquid Crystal Elastomer Fibers 由液晶弹性体纤维制成的可热机械回收智能纺织品
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-09 DOI: 10.1002/adfm.202530973
Xue Wan, Tongxiang Deng, Linda Plaude, Bo Gao, Siyao Chen, Fabien Sorin, Kaspar M. B. Jansen, Kun Zhou, Albert P. H. J. Schenning
Liquid crystal elastomer (LCE) fiber actuators are promising candidates for smart textiles owing to their reversible large-stroke actuation and high aspect ratios. However, current LCEs require ultraviolet (UV) curing and are not recyclable. In addition, research is mainly focused on flat knitted thermo-responsive textiles. Here, a scalable recycling route for smart LCE textiles is developed by melt-extruding a thermoplastic LCE containing a near-infrared photothermal dye. The LCE fibers exhibit ∼30% reversible actuation strain and display light-driven rolling motions with left- or right-turning trajectories according to their programmed twist handedness. Using commercial knitting machines, multi-material plain- and rib-knit textiles are fabricated that exhibit in-plane contraction and out-of-plane deformations including bending and twisting under thermal and photo stimuli. Circularly knitted tubular structures exhibit reversible contraction in both radial and axial directions, reaching approximately 16% in outer diameter, 19% in inner diameter, and 14% in length, enabling applications in autonomous climbing, controlled liquid release, and micro pumping. Finally, thermo-mechanical recycling yields recycled fibers and both flat and circularly knitted textile structures with nearly unchanged actuation performance and comparable mechanical properties, demonstrating robust recyclability. Our results demonstrate the creation of smart textiles that are simultaneously intelligent in function and sustainable in design.
液晶弹性体(LCE)纤维致动器具有可逆的大行程致动和高宽高比,是智能纺织品的理想选择。然而,目前的lce需要紫外线(UV)固化,并且不可回收。此外,研究主要集中在平针织热敏纺织品上。在这里,通过熔融挤出含有近红外光热染料的热塑性LCE,开发了一条可扩展的智能LCE纺织品回收路线。LCE纤维表现出~ 30%可逆的驱动应变,并显示出根据其编程的扭转手性具有向左或向右转向轨迹的光驱动滚动运动。使用商用针织机,制造多材料平纹和罗纹织物,在热和光刺激下表现出面内收缩和面外变形,包括弯曲和扭转。圆形编织管状结构在径向和轴向上均表现出可逆收缩,外径约为16%,内径约为19%,长度约为14%,可用于自主爬升、控制液体释放和微泵。最后,热机械回收产生再生纤维和平面和圆形针织织物结构,其驱动性能几乎不变,机械性能相当,显示出强大的可回收性。我们的研究结果展示了智能纺织品的创造,它同时具有智能功能和可持续设计。
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引用次数: 0
Stretchable, Breathable and Skin-conformal Nanofilm-based Epidermal Dry Electrodes for Electrophysiological and Motion Monitoring 用于电生理和运动监测的可拉伸、透气和皮肤适形纳米膜表皮干电极
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-09 DOI: 10.1002/adfm.202524980
Junjie Wang, Binbin Zhai, Jing Zhang, Hanyang Ning, Qi He, Tinghao Wu, Kang Li, Chi Zhang, Yanyan Luo, Aiping Chi, Wei Ren, Zhongshan Liu, Yu Fang
To meet the requirements for long-term electrophysiological signal recording and fine muscle motion monitoring, the development of ultrathin, stretchable, skin-conformal, and breathable dry electrodes is highly desirable. In this work, we present a flexible crosslinked nanofilm coated with silver nanowires to fabricate ultrathin dry electrodes. The nanofilm is synthesized through air-liquid interfacial polymerization using a biocompatible polyethylene glycol (PEG)-containing linker and a calix[4]arene derivative. The incorporation of acyl-hydrazone and PEG moieties ensures strong adhesion and excellent skin conformality. After depositing silver nanowires on one side, the resulting electrode—with a thickness of only 400 nm—demonstrates a relatively low Young's modulus of 3.55 MPa, a sheet resistance of 4.95 Ω sq−1, great adhesion (36 N m−1), high gas permeability and low cytotoxicity. Multimodal sensing experiments confirm that nanofilm electrodes can detect subtle motions when attached to various body parts, including finger, elbow, wrist, knuckle, and knee. Furthermore, we integrate nanofilm electrodes with a bio-signal recording system, successfully acquiring high-quality electrocardiograms and electromyograms, as well as monitoring large muscle and fine muscle motions, where the latter is particularly challenging to record. Moreover, the combination of a deep learning algorithm enables the recognition of finger movements with high accuracy.
为了满足长期电生理信号记录和精细肌肉运动监测的要求,超薄、可拉伸、皮肤适形、透气的干电极的开发是非常可取的。在这项工作中,我们提出了一种涂覆银纳米线的柔性交联纳米膜来制造超薄干电极。采用生物相容性聚乙二醇(PEG)连接剂和杯状[4]芳烃衍生物,通过气液界面聚合合成纳米膜。酰基腙和聚乙二醇的结合确保了强附着力和良好的皮肤一致性。在一侧沉积银纳米线后,得到的电极厚度仅为400 nm,其杨氏模量相对较低,为3.55 MPa,片电阻为4.95 Ω sq−1,附着力强(36 N m−1),高透气性和低细胞毒性。多模态传感实验证实,纳米膜电极可以检测到身体不同部位的细微运动,包括手指、肘部、手腕、指关节和膝盖。此外,我们将纳米膜电极与生物信号记录系统相结合,成功地获得了高质量的心电图和肌电图,以及监测大肌肉和精细肌肉的运动,后者尤其难以记录。此外,结合深度学习算法,可以对手指运动进行高精度的识别。
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引用次数: 0
Synergistic Defect Engineering and Self-Assembled Nafion on Photoanodes Enabling Selective Photoelectrochemical Glucose Oxidation Coupled H2 Production 协同缺陷工程和光阳极上的自组装离子实现选择性光电化学葡萄糖氧化偶联制氢
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-09 DOI: 10.1002/adfm.202528859
Yushen Xiao, Junchen Wang, Tongxin Tang, Kai-Hang Ye, Jieyu Li, Shuilian Cheng, Wenhao Zou, Junwei Chen, Xiaoxin Chen, Haoxian Shao, Hengjun Xie, Shengsen Zhang, Yueping Fang, Changyu Liu, Songcan Wang, Shanqing Zhang
Traditional photoelectrochemical (PEC) water splitting generally involves the kinetically sluggish oxygen evolution reaction, which not only restricts the hydrogen evolution reaction but also yields oxygen with little economic value. Herein, a Nafion/TiO2-x photoanode is designed for coupling the PEC glucose oxidation reaction (GOR) with hydrogen production. Benefiting from charge migration between the Nafion layer and TiO2-x, this approach effectively suppresses non-radiative recombination caused by vacancy-related surface traps. It also induces band bending, thereby enhancing the directional separation of photo-generated charges. Compared to pristine TiO2, this photoanode exhibits a fivefold increase in photocurrent density, outstanding long-term stability, and an absorbed photon-to-current conversion efficiency of 100%. Furthermore, the glucose oxidation efficiency reaches 97.8%, with a Faradaic efficiency of 80% for the selective oxidation of glucose to the high-value-added product of glucaric acid. Concurrently, the Faradaic efficiency for hydrogen evolution at the cathode is 99%, enabling simultaneous high-value organic synthesis and hydrogen co-production. Moreover, the Nafion/TiO2-x photoanode demonstrates ultra-low detection limits and linear response at ultra-low concentrations for photoelectrochemical sensing. This research offers novel insights for synergistically optimising biomass resource utilisation and clean energy production.
传统的光电化学(PEC)水分解通常涉及动力学缓慢的析氧反应,不仅限制了析氢反应,而且产生的氧经济价值不大。本文设计了一种Nafion/TiO2-x光阳极,用于将PEC葡萄糖氧化反应(GOR)与氢气生成耦合。得益于Nafion层和TiO2-x之间的电荷迁移,该方法有效抑制了由空位相关的表面陷阱引起的非辐射重组。它还诱导带弯曲,从而增强了光生电荷的定向分离。与原始的TiO2相比,这种光阳极的光电流密度增加了5倍,具有出色的长期稳定性,吸收的光子到电流的转换效率达到100%。葡萄糖的氧化效率达到97.8%,其中葡萄糖选择性氧化制取高附加值产品葡萄糖酸的法拉第效率为80%。同时,阴极析氢的法拉第效率为99%,可以同时实现高价值有机合成和氢的协同生产。此外,Nafion/TiO2-x光阳极在超低浓度下具有超低的检测限和线性响应。该研究为协同优化生物质资源利用和清洁能源生产提供了新的见解。
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引用次数: 0
Interfacial Electron Localization by Frustrated Lewis Pairs for Efficient Photothermal CO 2 ‐to‐Propionic Acid Conversion 光热CO 2 - to -丙酸有效转化中受挫刘易斯对的界面电子定位
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-09 DOI: 10.1002/adfm.74433
Guiwei He, Zihao Jiao, Yuting Yin, Feng Wang, Shengjie Bai, Ya Liu, Liejin Guo
Solar‐driven conversion of CO 2 and H 2 O into propionic acid remains challenging due to the complexity of multi‐electron transfer processes. Here, we couple frustrated Lewis pairs (FLPs), surface hydroxyls, and thermal excitation to build an electron‐rich Cu microenvironment for CO 2 ‐to‐propionic acid conversion. In the In(OH) 3 /CuO x @CF catalyst, oxygen vacancies (O v ) and neighboring Cu centers form O v ─Cu FLPs, while adjacent ─OH groups serve as cooperative Lewis bases and proton reservoirs. This architecture funnels photogenerated electrons from In(OH) 3 to Cu, stabilizes Cu δ+ (0 < δ <1) species, and markedly enhances interfacial electron localization. This electron‐rich environment lowers the activation barrier for CO 2 activation, stabilizes key intermediates (*COH, *CHCO, *CH 2 COCO), and promotes sequential *CO─*COH and *CHCO─*CO coupling. Thermal further reinforces localization, accelerates interfacial charge transfer, and decreases the energy barrier of the rate‐determining step, further accelerating C─C coupling. Propionic acid is achieved at a rate of 22711 µmol h −1 m −2 with 99% selectivity, yielding a solar‐to‐propionic acid efficiency of 0.15%, without sacrificial agents. This work highlights the crucial role of interfacial electron localization in multi‐electron transfer and C─C coupling, and provides general design principles for photothermal CO 2 reduction to higher‐order oxygenates.
由于多电子转移过程的复杂性,太阳能驱动的二氧化碳和h2o转化为丙酸仍然具有挑战性。在这里,我们将受挫的路易斯对(FLPs)、表面羟基和热激发结合起来,建立了一个富电子的Cu微环境,用于CO 2 - to -丙酸的转化。在In(OH) 3 /CuO x @CF催化剂中,氧空位(O v)和相邻的Cu中心形成O v─Cu FLPs,而相邻的OH基团则是合作的路易斯碱和质子储存器。这种结构将光生电子从In(OH) 3引导到Cu,稳定了Cu δ+ (0 < δ <1)种,显著增强了界面电子的局域化。这种富电子环境降低了CO 2活化的激活势垒,稳定了关键中间体(*COH、*CHCO、* ch2 COCO),促进了*CO─*COH和*CHCO─*CO的序次偶联。热进一步强化了局部化,加速了界面电荷转移,降低了速率决定步骤的能量势垒,进一步加速了C─C耦合。丙酸的生成速率为22711µmol h - 1 m - 2,选择性为99%,在没有牺牲剂的情况下,太阳-丙酸效率为0.15%。这项工作强调了界面电子定位在多电子转移和C─C耦合中的关键作用,并为光热CO 2还原为高阶氧合物提供了一般设计原则。
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引用次数: 0
Decoding the Hydro-Mechanical Mechanism of a Shape Memory Microneedle Scaffold for Adaptive Vaginal Wound Repair 形状记忆微针支架自适应阴道伤口修复的流体力学机制
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-08 DOI: 10.1002/adfm.202529119
Lisha Gong, Jiming He, Zhijuan Li, Jinru Liu, Xinquan Yang, Rong Yin, Jing Xie, Bitao Lu, Kun Yu, Fei Lu, Guangqian Lan, Enling Allen Hu, Xiangjun Wang, Ruiqi Xie, Dahua Shou, Wentao Lin, Shengsheng Pan
The management of Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is severely hampered by the inability of existing therapies to achieve conformal fitting and sustained drug release within the dynamic, moist vaginal environment. Herein, we report a novel Janus-structured microneedle (MN) system engineered from a poly(vinyl alcohol)/silk fibroin (PVA/SF) hybrid that overcomes these critical limitations through intelligent, hydration-triggered shape adaptation. A facile one-pot process induces spontaneous spatial segregation, forming an asymmetric bilayer architecture with a PVA-rich upper layer and an SF-enriched lower layer. This unique structure enables the device to be pre-programmed into a compact coil for minimally invasive insertion, which subsequently unfurls upon vaginal moisture exposure to achieve conformal contact with irregular wound surfaces. Crucially, we decipher the shape memory mechanism through 2D correlation spectroscopy and molecular dynamics simulations. These analyses reveal a sequential disruption of hydrogen bonds, while hydrophobic interactions from SF β-sheets provide exceptional mechanical stability in the hydrated state. In a rat model of severe vaginal injury, the arbutin-loaded MN (ARMN) scaffold orchestrates a holistic healing process—effectively scavenging ROS, suppressing IL-6-mediated inflammation, promoting VEGF-driven angiogenesis and PCNA-enhanced proliferation, and mitigating surgery-induced dysbiosis. This work establishes a pioneering paradigm of stimuli-responsive, self-adapting medical devices for transformative therapy in complex mucosal tissue regeneration.
由于现有治疗方法无法在动态、潮湿的阴道环境中实现适形配合和持续的药物释放,严重阻碍了MRKH综合征的治疗。在此,我们报道了一种新型的双面结构微针(MN)系统,该系统由聚乙烯醇/丝素蛋白(PVA/SF)混合物设计而成,通过智能、水合触发的形状适应克服了这些关键限制。一个简单的单锅过程诱导了自发的空间分离,形成了不对称的双层结构,上层富含pva,下层富含sf。这种独特的结构使设备能够被预先编程成一个紧凑的线圈,用于微创插入,随后在阴道湿气暴露时展开,以实现不规则伤口表面的保形接触。至关重要的是,我们通过二维相关光谱和分子动力学模拟来破译形状记忆机制。这些分析揭示了氢键的连续破坏,而SF β-片的疏水相互作用在水合状态下提供了卓越的机械稳定性。在严重阴道损伤的大鼠模型中,熊果苷负载的MN (ARMN)支架协调了整体愈合过程-有效清除ROS,抑制il -6介导的炎症,促进vegf驱动的血管生成和pna增强的增殖,并减轻手术引起的生态失调。这项工作建立了一个开创性的范例,刺激反应,自适应医疗设备的转化治疗在复杂的粘膜组织再生。
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引用次数: 0
Shortwave Infrared Organic Optoelectronic Materials and Devices: Organic Photodetectors, Organic Solar Cells and Organic Light-Emitting Diodes 短波红外有机光电材料与器件:有机光电探测器,有机太阳能电池和有机发光二极管
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-08 DOI: 10.1002/adfm.202532119
Renlong Li, Yi Zhang, Shuaiqi Li, Jingwen Chen, Yunhao Cao, Dingyuan Xing, Yazhong Wang, Fei Huang
The short-wave infrared (SWIR, 1–2.5 µm) spectral window has recently attracted intense attention owing to its intrinsically low scattering, deep penetration, and exceptional robustness under complex environments, capabilities that far surpass those of visible and near-infrared systems. These advantages have positioned SWIR photonics at the core of emerging applications ranging from biomedical imaging and environmental monitoring to autonomous sensing and optical communication. Although state-of-the-art SWIR technologies are predominantly based on inorganic semiconductors such as InGaAs, their high cost, rigidity, and limited compatibility with flexible or biocompatible platforms constrain further deployment. Organic semiconductors have therefore emerged as a compelling alternative, offering molecular tunability, solution processability, mechanical compliance, and scalability for large-area manufacturing. This review provides an overview of recent developments in SWIR materials, emphasizing donor-acceptor small molecules and polymers featuring band gaps below 1.24 eV. Topics addressed include molecular design strategies, structure-property relationships, distinct SWIR absorption and emission characteristics, and their device performance and representative applications in organic photodetectors, solar cells, and light-emitting diodes. Finally, we identify key challenges related to nonradiative losses, stability, charge management, and material–device integration and provide a forward-looking perspective for the development of next-generation SWIR organic optoelectronics.
短波红外(SWIR, 1-2.5µm)光谱窗口由于其固有的低散射、深穿透和在复杂环境下的出色鲁棒性,以及远远超过可见光和近红外系统的能力,最近引起了人们的广泛关注。这些优势使SWIR光子学成为新兴应用的核心,从生物医学成像和环境监测到自主传感和光通信。虽然最先进的SWIR技术主要基于无机半导体,如InGaAs,但它们的高成本、刚性以及与柔性或生物相容性平台的有限兼容性限制了进一步的部署。因此,有机半导体已成为一种引人注目的替代方案,为大面积制造提供分子可调性、溶液可加工性、机械顺应性和可扩展性。本文综述了SWIR材料的最新进展,重点介绍了带隙低于1.24 eV的供体-受体小分子和聚合物。讨论的主题包括分子设计策略,结构-性质关系,独特的SWIR吸收和发射特性,以及它们的器件性能和在有机光电探测器,太阳能电池和发光二极管中的代表性应用。最后,我们确定了与非辐射损耗、稳定性、电荷管理和材料器件集成相关的关键挑战,并为下一代SWIR有机光电子技术的发展提供了前瞻性的视角。
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引用次数: 0
Intelligent Magnetically Reconfigurable Biomass Liquid Crystal Films with a Solid-Shell/Fluid-Core Anisotropic Architecture for Programmable Microwave Absorption 具有固体-壳/流体-核各向异性结构的可编程微波吸收智能磁可重构生物质液晶膜
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-08 DOI: 10.1002/adfm.74411
Zhonghui Li, Shuang Liang, Haoyuan Li, Yuming Zhou, Xiaohai Bu, Man He
The rapid advancement of intelligent electronics and radar technologies has created an urgent demand for stimuli-responsive microwave absorbers with dynamically tunable electromagnetic properties. However, most high-performance absorbers remain fixed in their electromagnetic properties after fabrication, limiting adaptability to varying electromagnetic environments. Here, a magnetically reconfigurable Ni@CNT—cellulose liquid crystal film (NCCF) is constructed with a solid-shell/fluid-core architecture based on renewable hydroxypropyl cellulose (HPC). The fluid cholesteric core endows Ni@CNT chains (NCC) with rotational freedom, while the solidified shell preserves mechanical robustness. Under magnetic fields, NCC rotation induces concurrent reorganization of the surrounding HPC matrix through interfacial hydrogen bonding, yielding a multiscale anisotropic framework. The films feature pronounced orientation-dependent microwave absorption (MA), where magnetic-field-induced structural reconfiguration reorganize conductive pathways, dipolar interfaces, and magnetic coupling domains, enabling programmable modulation of Reflection loss (RLmin) and effective absorption bandwidth (EAB). This tunability follows a clear performance trend (NCCF-H > NCCF-R > NCCF-V > NCPF), corresponding to progressively strengthened anisotropic dissipation networks. Consequently, the horizontally aligned NCCF exhibits the strongest attenuation (RLmin = −42 dB at 12 GHz) with X−Ku-band-wide absorption. This work provides a sustainable and scalable strategy for constructing next-generation adaptive electromagnetic absorbers by integrating renewable cellulose liquid crystals with magnetically responsive nanochains.
随着智能电子和雷达技术的快速发展,对具有动态可调谐电磁特性的微波吸收器产生了迫切的需求。然而,大多数高性能吸收体在制造后仍然固定在其电磁特性上,限制了对不同电磁环境的适应性。本文以可再生羟丙基纤维素(HPC)为基础,采用固壳/流芯结构构建了一种磁性可重构Ni@CNT -纤维素液晶膜(NCCF)。流体胆甾核赋予Ni@CNT链(NCC)旋转自由,而固化壳保持机械坚固性。在磁场作用下,NCC旋转通过界面氢键诱导周围HPC基体同时重组,形成多尺度各向异性骨架。该薄膜具有明显的方向依赖微波吸收(MA),其中磁场诱导的结构重构重组了导电路径、偶极界面和磁耦合域,从而实现了反射损耗(RLmin)和有效吸收带宽(EAB)的可编程调制。这种可调性具有明显的性能趋势(NCCF-H > NCCF-R > NCCF-V >; NCPF),对应于各向异性耗散网络的逐渐增强。因此,水平排列的NCCF表现出最强的衰减(在12 GHz时RLmin = - 42 dB),具有X−ku波段的吸收。本研究通过将可再生纤维素液晶与磁响应纳米链相结合,为构建下一代自适应电磁吸收剂提供了一种可持续的、可扩展的策略。
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引用次数: 0
Enhanced Cycling Stability of High-Voltage Ni-Rich Cathodes With Autogenous Robust Surfaces for All-Solid-State Batteries 全固态电池用高电压富镍阴极的增强循环稳定性
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-08 DOI: 10.1002/adfm.202531810
Sunmin Kim, Minji Kim, Jonghyuk Lee, Miju Ku, Insuk Song, Fritz B. Prinz, Young-Beom Kim
The development of all-solid-state batteries (ASSBs) with sulfide-based solid electrolytes is a promising strategy for realizing safe Li-ion storage systems with high energy densities. However, the practical implementation of Ni-rich layered cathode active materials (CAMs) with superior theoretical capacities remains hindered by their interfacial instability in sulfide electrolytes and intrinsic structural degradation caused by cation mixing and oxygen losses. To address these challenges, this study introduces a novel flash-light sintering (FLS) technique that can rapidly generate a conformal NiO-like protective surface layer directly from the CAM lattice without using external precursors or extensive thermal treatments. This uniformly engineered nanoscale surface layer undergoes robust chemical and mechanical stabilization by blocking direct contact with the electrolyte, thereby significantly inhibiting parasitic interfacial reactions. Additionally, the NiO-like shell acts as a rigid structural pillar, effectively preventing cation migration, layered-to-rock-salt phase transitions, and the subsequent lattice collapse, thereby preserving the electrochemically active core. Electrochemical assessments demonstrate significantly enhanced performance; at a charge rate of 0.1 C in the normal voltage window, the capacity retention after 100 cycles improves from 55% with 103.8 mAh g−1 and a Coulombic efficiency of 89.13% for the pristine material to 81% with 152.1 mAh g−1 and a Coulombic efficiency of 99.78% for the treated material. In an extended cut-off window, the capacity retention improves from 40% with 90.9 mAh g−1 and a Coulombic efficiency of 86.98% to 78% with 166.3 mAh g−1 and a Coulombic efficiency of 98.9%. Owing to its rapid, scalable, and highly controllable nature, FLS offers a compelling approach for practical surface engineering with a substantial potential for improving both the performance and safety of ASSBs and extending their applicability to various functional oxide materials that require precise and efficient surface modifications.
利用硫化物基固体电解质开发全固态电池(assb)是实现高能量密度安全锂离子存储系统的一个很有前途的策略。然而,具有优越理论容量的富镍层状阴极活性材料(CAMs)的实际实施仍然受到其在硫化物电解质中的界面不稳定性以及阳离子混合和氧损失引起的固有结构降解的阻碍。为了解决这些挑战,本研究引入了一种新的闪光灯烧结(FLS)技术,该技术可以直接从CAM晶格快速生成保形的NiO-like保护表面层,而无需使用外部前驱体或广泛的热处理。通过阻断与电解质的直接接触,这种统一设计的纳米级表面层具有强大的化学和机械稳定性,从而显著抑制寄生界面反应。此外,类nio壳作为刚性结构支柱,有效防止阳离子迁移,层状到岩盐的相变以及随后的晶格崩溃,从而保持电化学活性的核心。电化学评价表明性能显著提高;当充电速率为0.1 C时,经过100次循环后,原始材料的容量保持率从103.8 mAh g−1时的55%和89.13%提高到152.1 mAh g−1时的81%和99.78%的库仑效率。在延长的截止窗口中,容量保持率从90.9 mAh g−1时的40%和库仑效率的86.98%提高到166.3 mAh g−1时的78%和98.9%。由于其快速、可扩展和高度可控的特性,FLS为实际表面工程提供了一种引人注目的方法,具有提高assb性能和安全性的巨大潜力,并扩展了其适用于需要精确和高效表面改性的各种功能氧化物材料。
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引用次数: 0
Bio-Inspired Multimodal Hardware Front-End Enabled by 2D Floating-Gate Memory for UAV Perception 基于二维浮栅存储器的无人机感知仿生多模态硬件前端
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-02-08 DOI: 10.1002/adfm.202531983
Lianghao Guo, Yue Cheng, Cong Li, Xiaoyu Guo, Jiankai Yin, Dadong Fan, Zhenyu Xu, Chenyu Tang, Arokia Nathan, Shuo Gao, Li Tao, Luigi G. Occhipinti
Reliable environmental perception for small autonomous unmanned aerial vehicles (UAVs) remains challenging under rapid ego-motion, visual blind regions, and aerodynamic disturbances. Inspired by birds’ efficient sensing-to-computing pathways, we design a multimodal joint-modulation hardware system in which a 2D floating-gate (FG) memory serves as the computing core, integrating visual, inertial, and wind-field cues to enable fast and stable tracking and obstacle avoidance in dynamic environments.
在快速自我运动、视觉盲区和空气动力学干扰下,小型自主无人机(uav)的可靠环境感知仍然是一个挑战。受鸟类高效感知到计算路径的启发,我们设计了一个多模态联合调制硬件系统,其中二维浮门(FG)存储器作为计算核心,集成视觉、惯性和风场线索,以实现在动态环境中快速稳定的跟踪和避障。
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引用次数: 0
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Advanced Functional Materials
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