Gaobo Chang, Hanqing Zhao, Cheng Huang, Shulian Lei, Junxiang Wang, Zeyu Qiao, Kun Lin, Steven S C Chuang, Zhong Li, Xianran Xing, Jieshan Qiu
{"title":"Negative-Thermal-Expansion Strategy Enables Hard Carbon With Tuned Heat/Strain Tolerances for Sodium Storage.","authors":"Gaobo Chang, Hanqing Zhao, Cheng Huang, Shulian Lei, Junxiang Wang, Zeyu Qiao, Kun Lin, Steven S C Chuang, Zhong Li, Xianran Xing, Jieshan Qiu","doi":"10.1002/adma.75284","DOIUrl":"https://doi.org/10.1002/adma.75284","url":null,"abstract":"<p><p>The thermal/stress runaways pose a risk to the safety and industrialization of sodium-ion battery (SIB), which hence requires external management equipment. Actually, the thermal/stress generation originates from the repetitive Na<sup>+</sup> intercalation within carbon interlayers and pore-filling in the initial stage. Herein, we propose a regulation strategy of \"in situ thermal strain relief\" to achieve internal thermal and stress managements of SIB hard carbon (HC) anode by incorporating negative thermal expansion oxide ZrW<sub>2</sub>O<sub>8</sub>. The results indicate that the heat and strain were reduced obviously after cycling, leading to rapid diffusion kinetics and enhanced sodium storage capacity. Moreover, the microstructure and efficient electron/ion transport within HC were preserved, demonstrating excellent capacity stability even after high-rate and long-term cycling over wide operating temperature ranges (-20°C to 60°C). This study provides a new approach for thermal and stress management inside the battery, which may play a joint effort with the conventional management equipment outside the battery and beyond.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":" ","pages":"e75284"},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190239","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-Entropy Ceramic-Enhanced Deformable Triboelectric Nanogenerator for Noncontact Biomechanical and Raindrop Energy Harvesting","authors":"Shengyou Li, Wei-Chen Peng, Syun-Hong Chou, Zhi-Xian Yan, Jiann-Yeu Chen, Dun-Jie Jhan, Wei-Chun Yang, Shi-Hong Chen, Yi-Lin Huang, Cheng-Hung Tsai, Ming-Yen Lu, Heng-Jui Liu, Cheolmin Park, Ying-Chih Lai","doi":"10.1002/adma.74157","DOIUrl":"10.1002/adma.74157","url":null,"abstract":"<p>To address interfacial friction losses associated with physical contact separation in triboelectric nanogenerators (TENGs), noncontact or liquid-solid-contact TENGs have recently been developed. However, the limited performance of noncontact TENGs has hindered their further advancement. This study proposed a large-area deformable high-entropy ceramic (HEC)-enhanced noncontact TENG (HEC-TENG) by integrating an HEC-doped silicone triboelectric layer with a charge-storage graphitic textile and a stretchable carbon black electrode. This strategy establishes a comprehensive tribo-charge regulation mechanism, including charge generation, capture, transport, and retention, resulting in a noncontact output of 90 V and 450 µA m<sup>−2</sup> at a separation distance of 1 mm, while maintaining a stretchability exceeding 230%. Notably, by leveraging the synergistic effects of HEC doping and the trilayer composite configuration, the HEC-TENG achieved a maximum voltage of 466 V for droplet-based energy harvesting. Furthermore, wearable power sources and large-area rainwater-harvesting systems enabled by HEC-TENGs were demonstrated. Overall, this work validates the universal enhancement effect of HECs when employed as triboelectric layers in both noncontact and liquid-solid contact TENGs, establishing a representative paradigm for the development of wearable HEC-based TENGs. These findings provide new insights into future wearable self-powered electronics and distributed energy-harvesting systems.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"38 58","pages":""},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.74157","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148589550","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}
{"title":"Single-Photon Superradiance in Giant Rhombicuboctahedral CsPbI3 Nanocrystals","authors":"Ping-Hsun Tsai, Chia-Hsuan Liang, Yung-Tang Chuang, Hung-Ming Chen, Tzu-Hao Liao, Tzu-Yi Yang, Yu-Lun Chueh, Yu-Chen Chen, Shin-Wen Chen, Ken-Tsung Wong, Hao-Wu Lin","doi":"10.1002/adma.74549","DOIUrl":"10.1002/adma.74549","url":null,"abstract":"<div>\u0000 \u0000 <p>Increasing the volume of halide perovskite nanocrystals (NCs) is generally accompanied by lower photoluminescence quantum yield (PLQY). Here, we overcame this trade-off with giant (25 nm) rhombicuboctahedral CsPbI<sub>3</sub> NCs that retain an exceptional PLQY of 87%. Their distinct size and morphology were induced by using phenacyl iodide as a novel precursor and subsequently characterized by x-ray diffraction and transmission electron microscopy. In these giant NCs, the non-radiative Auger process is suppressed, giving rise to a high biexciton PLQY of 55%, while a high single-photon purity up to 95% was achieved using a time-gating method. Benefiting from their enlarged volume, these NCs achieve one of the largest reported absorption cross-sections of 5.3 × 10<sup>−13</sup> cm<sup>2</sup>, along with emission tunable to the near-infrared region (>700 nm) and a prolonged room-temperature lifetime of 465 ns—nearly an order of magnitude longer than conventional NCs. In contrast, at cryogenic temperatures, these enlarged NCs exhibit narrow and ultrafast emission (<i>τ</i> = 467 ps) arising from the coherent coupling of dipoles within a single NC, which induces a giant oscillator strength and leads to single-photon superradiance. These results position the unique rhombicuboctahedral, giant CsPbI<sub>3</sub> NCs as novel near-infrared emitters and promising candidates for high-speed quantum photon sources.</p>\u0000 </div>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"38 58","pages":""},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148688014","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}
Advanced MaterialsPub Date : 2026-10-16Epub Date: 2026-08-19DOI: 10.1002/adma.74422
Sukhyeun Jang, Yong-Jae Kim, Incheol Jeong, Minju Kim, Jaewoong Lee, Jihan Kim, Ki-Min Roh, Kang Taek Lee, Seon Joon Kim, Yonghee Lee, Chi Won Ahn, Hee-Tae Jung
{"title":"Chloride Ions: Essential Agents for Achieving Spontaneous Delamination of MXene","authors":"Sukhyeun Jang, Yong-Jae Kim, Incheol Jeong, Minju Kim, Jaewoong Lee, Jihan Kim, Ki-Min Roh, Kang Taek Lee, Seon Joon Kim, Yonghee Lee, Chi Won Ahn, Hee-Tae Jung","doi":"10.1002/adma.74422","DOIUrl":"10.1002/adma.74422","url":null,"abstract":"<p>Despite significant advancements in MXene synthesis, the etching and delamination processes remained largely empirical, with limited understanding of their underlying mechanisms. Here, we uncover the pivotal role of chloride ions (Cl<sup>–</sup>) in enabling spontaneous delamination by facilitating Li<sup>+</sup> ion intercalation through interlayer expansion and surface termination during the etching. In all cases, delamination is not observed where Cl<sup>−</sup> was absent in the etchant, and spontaneous delamination occurs only in samples where chlorine terminations are formed during the etching. Our findings are utilized to develop a one-step, maximized spontaneous MXene synthesis method with high delamination efficiency, yielding an 83.6% production rate and an enhanced electrical conductivity of ∼15 000 S/cm. It shows superior performance in transparent conductive films and Joule heating devices, showcasing their potential for next-generation electronic and energy systems. This delamination mechanism and synthesis approach are not limited to Ti<sub>3</sub>AlC<sub>2</sub> MAX but can be extended to other MAX phases, highlighting their broad applicability. Observations made in this effort should serve as the foundation for designing new synthesis routes for diverse MAX phases and advancing MXene-based applications.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"38 58","pages":""},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.74422","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785980","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}
Advanced MaterialsPub Date : 2026-10-16Epub Date: 2026-08-12DOI: 10.1002/adma.74589
Ruoxi Yang, Shiwei Xu, Wenbo Pang, Yihui Zhang
{"title":"Perception-Feedback Mapping Strategies for Flexible Human–Machine Interfaces","authors":"Ruoxi Yang, Shiwei Xu, Wenbo Pang, Yihui Zhang","doi":"10.1002/adma.74589","DOIUrl":"10.1002/adma.74589","url":null,"abstract":"<div>\u0000 \u0000 <p>The field of flexible human–machine interfaces (HMIs) has been evolving rapidly with progress in materials science, structural design, device fabrication, and system integration. Developments of advanced flexible sensing and feedback devices have remarkably expanded the perceptual modalities, feedback capabilities, and functional scope of these systems. However, the broader deployment of flexible HMIs depends not only on the device performance of sensing/feedback components, but also on the control strategy that translates sensed signals into command outputs for feedback modules. This review highlights recent progress in such perception-feedback mapping strategies for flexible HMIs. Representative sensing and feedback modules, together with common system-level physical architectures, are briefly introduced as a basis for analyzing the relationship between sensed inputs and feedback outputs. A systematic framework is then proposed based on the principle of signal flow from the perception to the feedback side, allowing perception-feedback mapping strategies to be classified into command-based mapping, continuous mapping, and closed-loop control. Comprehensive discussions on these three categories of mapping strategies are presented, covering their operating principles, system implementation, and practical applications. Finally, we discuss current challenges and future directions toward more robust, generalizable, and integrated flexible HMI systems.</p>\u0000 </div>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"38 58","pages":""},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148717691","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":"Graded Supramolecular Frameworks for Extending Space-Charge Modulation Regions and Boosting Carrier Dynamics in Perovskite Solar Cells","authors":"Shuhong Wang, Bing Yin, Lina Li, Hongliang Lei, Wenrui Li, Xibei Jia, Qiuyu Liu, Timur Meng, Jiangtao Jia, Zihao Wang, Yantao Shi, Guangshan Zhu, Yudi Wang","doi":"10.1002/adma.74489","DOIUrl":"10.1002/adma.74489","url":null,"abstract":"<div>\u0000 \u0000 <p>Efficient carrier separation and transport in perovskite solar cells are fundamentally constrained by the narrow space-charge regions intrinsic to conventional device architectures, leaving thick perovskite bulks electrically inactive. Here, we report a supramolecular graded electrostatic potential modulation strategy enabled by a fluorine-functionalized porous aromatic framework (PAF-2F) that spatially redistributes space charge throughout the perovskite absorber. The graded incorporation of PAF-2F continuously modulates the local electronic structure throughout the perovskite bulk, establishing an extended electrostatic potential gradient and transforming carrier transport from diffusion-dominated motion into field-assisted drift. This extended internal field accelerates charge separation, suppresses nonradiative recombination, and enhances charge extraction, yielding a champion power conversion efficiency of 26.66%. Moreover, the rigid conjugated framework and strong interfacial interactions of PAF-2F stabilize the graded doping profile and inhibit ion migration, resulting in excellent operational stability with 93% efficiency retention after 1000 h of continuous illumination without encapsulation. This work presents a general supramolecular strategy for bulk electronic structure engineering in perovskite semiconductors, offering a viable pathway toward simultaneously achieving high efficiency and long-term stability.</p>\u0000 </div>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"38 58","pages":""},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785842","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":"Cation-Framework-Preserving Oxygen-Vacancy Engineering for Broadband Infrared Emission in High-Entropy Spinel Oxides.","authors":"Cheng-Yu He, Ge-Ting Sun, Wei-Ming Wang, Bao-Hua Liu, Zhong-Wei Lu, Xiang-Hu Gao","doi":"10.1002/adma.75418","DOIUrl":"https://doi.org/10.1002/adma.75418","url":null,"abstract":"<p><p>High-temperature radiative ceramics require broadband infrared emission and stable structures, but the defects that enhance emission can also weaken oxide lattices. Here, we regulate oxygen vacancies in (MnCrFeNiCu)<sub>3</sub>O<sub>4</sub>, a high-entropy spinel oxide (HEO), by vacuum annealing without changing the nominal cation composition. This approach regulates oxygen nonstoichiometry without introducing an additional cation-substitution variable. The binary Mn-Cr reference has band-averaged emissivities of 0.668 and 0.726 over 0.78-2.5 and 2.5-16 µm, respectively. Pristine HEO increases these values to 0.919 and 0.863, while the optimized HEO-O<sub>V</sub>-5 h reaches 0.932 and 0.902. Multication incorporation broadens electronic states near the band edges. Oxygen removal creates vacancy-derived states, redistributes charge, and changes local M─O coordination. The vacancy-derived states are consistent with localized d-d excitation, intervalence charge transfer, and polaron-related absorption, while changes in M─O coordination broaden vibrational absorption. Together, these electronic and local structural changes are consistent with the enhanced infrared emissivity. The spinel framework and high emissivity remain largely preserved after annealing at 1000°C for 5 h. These results show that oxygen vacancies can be regulated within a stable multication spinel to combine broadband infrared emission with high-temperature stability.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":" ","pages":"e75418"},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190154","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 Liquid Crystal Elastomer Fibers via a Tandem Alignment Strategy.","authors":"Chang Xu, Zhuofan Zhang, Zhibing Chen, Chenglin Jia, Jinying Yuan, Zhongqiang Yang","doi":"10.1002/adma.75204","DOIUrl":"https://doi.org/10.1002/adma.75204","url":null,"abstract":"<p><p>Liquid crystal elastomer (LCE) fibers have shown great potential as shape-memory soft materials due to their large and reversible deformation capacity. However, fabrication methods for LCE fibers with ultrafast thermal response and the exploration of the factors influencing their thermal actuation performance remain limited. A tandem alignment strategy based on electrospinning is presented to fabricate highly aligned LCE fibers. These LCE fibers achieve an order parameter of up to 0.78 and exhibit exceptional actuation performance under thermal stimulation, including an actuation strain of 80%, an actuation speed of 1485% s<sup>-1</sup>, and a peak power density of 6105 W kg<sup>-1</sup>. Furthermore, the actuation performance can be significantly enhanced by resonance. Under constant heating conditions, modulation of the heating frequency enables the actuation speed of the LCE fibers to be amplified up to 10-fold, achieving bioinspired energy efficiency optimization similar to the wing-flapping of insects. The LCE fibers demonstrate promising applicability in scenarios requiring ultrafast and efficient thermal actuation.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":" ","pages":"e75204"},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190188","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}
Advanced MaterialsPub Date : 2026-10-16Epub Date: 2026-09-15DOI: 10.1002/adma.74929
{"title":"RETRACTION: Doubling Power Conversion Efficiency of Si Solar Cells","authors":"","doi":"10.1002/adma.74929","DOIUrl":"10.1002/adma.74929","url":null,"abstract":"<p>Z. Li, Y. Chen, R. Guo et al., “Doubling Power Conversion Efficiency of Si Solar Cells,” <i>Advanced Materials</i>, <i>36</i>, no. 48, (2024): 2405724, https://doi.org/10.1002/adma.202405724.</p><p>The above article, published online on 27 August 2024 in Wiley Online Library (onlinelibrary.wiley.com), has been retracted by agreement between the journal Editors-in-Chief Irem Bayindir-Buchhalter and Esther Levy; and Wiley-VCH GmbH.</p><p>The retraction has been agreed following concerns raised by a third party regarding the reported power conversion efficiencies. The concerns were evaluated by independent experts who agreed that the headline claims likely resulted from measurement and calibration problems in the experimental setup, rather than demonstrating a violation of the theoretical Shockley–Queisser limit. The reviewers also agreed that the results are scientifically unsupported as no uncertainty analysis or independent verification were performed. The editors therefore found that the evidence presented in the article is insufficient to support the conclusions.</p><p>The authors disagree with the decision to retract.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"38 58","pages":""},"PeriodicalIF":29.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.74929","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148965831","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}