Nano Letters最新文献

{"title":"Silver Electrodeposition from Ag/AgCl Electrodes: Implications for Nanoscience","authors":"Chuhongxu Chen, Ziwei Wang, Guilin Chen, Zhijia Zhang, Zakhar Bedran, Stephen Tipper, Pablo Diaz-Núñez, Ivan Timokhin, Artem Mishchenko, Qian Yang","doi":"10.1021/acs.nanolett.5c01929","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01929","url":null,"abstract":"With the advancement of nanoscience, silver/silver chloride (Ag/AgCl) electrodes have become widely utilized in microscale and nanoscale fluidic experiments, because of their stability. However, our findings reveal that the dissolution of AgCl from the electrode in Cl<sup>–</sup>-rich solutions can lead to significant silver contamination, through the formation of silver complexes, <i></i><span style=\"color: inherit;\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><msup><mrow><mo stretchy=\"false\">[</mo><msub><mrow><mi mathvariant=\"normal\">A</mi><mi mathvariant=\"normal\">g</mi><mi mathvariant=\"normal\">C</mi><mi mathvariant=\"normal\">l</mi></mrow><mrow><mi mathvariant=\"normal\">n</mi><mo>+</mo><mn>1</mn></mrow></msub><mo stretchy=\"false\">]</mo></mrow><mrow><mi mathvariant=\"normal\">n</mi><mo>−</mo></mrow></msup></math>' role=\"presentation\" style=\"position: relative;\" tabindex=\"0\"><nobr aria-hidden=\"true\"><span style=\"width: 5.514em; display: inline-block;\"><span style=\"display: inline-block; position: relative; width: 5.003em; height: 0px; font-size: 110%;\"><span style=\"position: absolute; clip: rect(1.196em, 1005em, 2.616em, -999.997em); top: -2.156em; left: 0em;\"><span><span><span style=\"display: inline-block; position: relative; width: 5.003em; height: 0px;\"><span style=\"position: absolute; clip: rect(3.128em, 1004.04em, 4.435em, -999.997em); top: -3.974em; left: 0em;\"><span><span style=\"font-family: STIXMathJax_Main;\">[</span><span><span style=\"display: inline-block; position: relative; width: 3.412em; height: 0px;\"><span style=\"position: absolute; clip: rect(3.128em, 1002.16em, 4.378em, -999.997em); top: -3.974em; left: 0em;\"><span><span style=\"font-family: STIXMathJax_Main;\">A</span><span style=\"font-family: STIXMathJax_Main;\">g</span><span style=\"font-family: STIXMathJax_Main;\">C</span><span style=\"font-family: STIXMathJax_Main;\">l</span></span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span><span style=\"position: absolute; top: -3.747em; left: 2.162em;\"><span><span style=\"font-size: 70.7%; font-family: STIXMathJax_Main;\">n</span><span style=\"font-size: 70.7%; font-family: STIXMathJax_Main;\">+</span><span style=\"font-size: 70.7%; font-family: STIXMathJax_Main;\">1</span></span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span></span></span><span style=\"font-family: STIXMathJax_Main;\">]</span></span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span><span style=\"position: absolute; top: -4.372em; left: 4.094em;\"><span><span style=\"font-size: 70.7%; font-family: STIXMathJax_Main;\">n</span><span style=\"font-size: 70.7%; font-family: STIXMathJax_Main;\">−</span></span><span style=\"display: inline-b","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"158 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153661","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":"Superior Hydrogen Separation in Nanofluidic Membranes by Synergistic Effect of Pore Tailoring and Host–Guest Interaction","authors":"Huijie Wang, Miaomiao Shi, Chong Wang, Zhenyu Chu, Zongyou Yin, Chen Wang","doi":"10.1021/acs.nanolett.5c01736","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01736","url":null,"abstract":"High-purity H₂ production accompanied by precise decarbonization paves the way for a carbon-neutral society. Hydrogen-bonded organic frameworks (HOFs) are promising materials for advanced gas separation membranes, but their broad nanoscale pores limit selective separation. High-quality carboxylic acid-based HOF membranes (HOF-S, HOF-M, HOF-L) with pore sizes of 6.2, 16, and 24 Å were synthesized using an innovative pore-tailoring strategy. Under optimized conditions, H₂ can pass through while CO₂ is blocked by the size-exclusion principle. Abundant carboxylic acid groups in pores hinder the mobility of CO₂ via electrostatic interaction, integrating adsorption and molecular sieving to enable excellent H₂ transport and separation. The HOF-S membrane combines size exclusion and HOF-CO₂ interactions, exhibiting excellent selectivity for H₂/CO₂ (164) and a ternary gas mixture (H₂/CO₂ selectivity: 154; H₂/CH₄ selectivity: 201). It also displays long-term stability under both dry and wet conditions. This strategy opens new possibilities for customizing nanofluidic membranes for advanced gas separation technologies.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"58 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153660","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":"Electron Cloaking in MoS2 for High-Performance Optoelectronics","authors":"Yu-Xiang Chen, Jian-Jhang Lee, Ding-Rui Chen, You-Chen Lin, Hao-Ting Chin, Xiu-Yu Huang, Sheng-Kuei Chiu, Chu-Chi Ting, Mario Hofmann, Ya-Ping Hsieh","doi":"10.1021/acs.nanolett.5c02169","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c02169","url":null,"abstract":"Defects in two-dimensional (2D) materials represent both challenges and opportunities to their optoelectronic performance. While defects limit the carrier mobility in transistors through increased charge scattering, they also enhance 2D material functionality in sensors. Electron cloaking, a process that reduces Coulomb scattering via localized electron–defect interactions, has recently been shown to mitigate the performance degradation of bulk semiconductors in the presence of defects. We demonstrate the realization of electron cloaking in 2D materials through the metal decoration of defects. Sulfur vacancies were introduced in MoS₂ and selectively decorated with aluminum using atomic layer deposition. Theoretical and experimental characterization demonstrate the suppression of electronic scattering through localized interactions. Optoelectronic measurements reveal a significant improvement in carrier mobility and lifetime, highlighting the effectiveness of the cloaking mechanism. Our findings open a route independently to maximize performance and functionality of optoelectronic devices, which is illustrated by the realization photosensors with unprecedented sensitivity and speed.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"125 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153662","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":"Surface-Dominated Quantum-Metric-Induced Nonlinear Transport in the Layered Antiferromagnet CrSBr","authors":"Kamal Das, Yufei Zhao, Binghai Yan","doi":"10.1021/acs.nanolett.5c00195","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00195","url":null,"abstract":"The van der Waals (vdW) antiferromagnet CrSBr has recently garnered significant attention due to its air stability, high magnetic transition temperature, and semiconducting properties. We investigate its nonlinear transport properties and identify a quantum-metric-dipole (QMD)-induced nonlinear anomalous Hall effect and nonlinear longitudinal resistivity, which switch signs upon reversing the Néel vector. The significant QMD originates from Dirac nodal lines near the conduction band edge within the experimentally achievable doping range. Knowing the weak interlayer coupling, it is unexpected that the nonlinear conductivities do not scale with the sample thickness but are dominantly contributed by surface layers. In the electron-doped region, the top layer dominates the response, while the top three layers contribute the most in the hole-doped region. Our results establish topological nodal lines as a guiding principle to design high-performance nonlinear quantum materials, and we suggest that surface-sensitive transport devices will provide new avenues for nonlinear electronic applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"3 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153663","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":"Stable Lithium Anodes Enabled by the Hardening and High Li+ Flux Interlayer","authors":"Shaozhen Huang, Kun Li, An Wang, Siru He, Zhangdi Xie, Huimiao Li, Zhibin Wu, Yuejiao Chen, Libao Chen","doi":"10.1021/acs.nanolett.5c01606","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01606","url":null,"abstract":"The commercial use of lithium metal batteries is greatly limited by dendrite formation and slow Li⁺ transport at the anode–electrolyte interface. Herein, the constructed high-modulus polymer interlayer suppressed the Li dendrite formation, leading to dense deposition and enhanced Li⁺ transport. Meanwhile, this formed robust organic solid–electrolyte interphase inhibited the side reactions occurring at the anode–electrolyte interface while promoting a high Li⁺ flux. By constructing the polymer interlayer, the Li@P3DDT||Li@P3DDT symmetric cells demonstrated an impressive stability lifespan of over 3400 h at 1 mA/cm² and 1 mAh/cm². The LFP||Li@P3DDT full cells exhibit a remarkable capacity retention of 85.0% over 300 cycles at 4 C. Furthermore, the 50 μm Li@P3DDT||LiCoO₂ pouch cell with 380 Wh kg^–1 maintained over 99.9% retention of capacity over 60 cycles at 0.5 C. The research paves the way for the advancement of stable lithium anodes.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"9 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153769","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":"Degradation Pathway Tailoring through Nanocrystal Interface Engineering for Photostable Perovskite Solar Cells","authors":"Huichao Guo, Fangzhou Liu, Cuncun Wu, Yan Guan, Xian Zhang, Tengyu Xu, Jiaqi Zhang, Shaogeng Cai, Jian Li, Yilin Wei, Yangyang Zhang, Shijian Zheng","doi":"10.1021/acs.nanolett.5c01111","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01111","url":null,"abstract":"While organic–inorganic hybrid perovskites (ABX₃) hold immense photovoltaic potential, operational instability originating from defect-mediated ion migration and light-induced degradation remains a critical bottleneck. Here, we adopt Cs₂PbI₂Cl₂ nanocrystals (CPIC-NCs) and CsPbCl₃ nanocrystals (CPC-NCs) to modify the interface of the perovskite light-absorbing layer. Beyond conventional defect-healing roles (Cs⁺/halide filling of the A/X-site vacancies), this modification can fundamentally alter the degradation pathways of perovskite films under light exposure. Our study reveals CPIC-NCs serve as a superior modifier by inducing a more controllable formation of Pb(OH)I and effectively suppressing the decomposition of perovskite into lead iodide after long-term light aging. Following the CPIC-NCs modification of the solar cells, a champion power conversion efficiency of 24.28% was achieved. Moreover, the unencapsulated devices retained over 90% of their initial efficiency after 600 h under ISOS-L-1I and 4500 h under ISOS-D-1 conditions. This work establishes nanocrystal-mediated interface control as a dual-defect/degradation regulatory strategy for perovskite optoelectronics.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153664","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":"Three-Dimensional Porous Copper Conductive Paper.","authors":"Zheng Li, Xiaoli Ge, Clayton L Rumsey, Jun Zhang, Qikun Feng, ZhongXuan Wang, Saurabh Khuje, Abdullah Islam, Pratahdeep Gogoi, Martin Trebbin, Yuguang C Li, Shenqiang Ren","doi":"10.1021/acs.nanolett.5c02228","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c02228","url":null,"abstract":"<p><p>Conductive paper promises benefits in flexible biodegradable electronics and sustainability but faces challenges in its conductivity, stress-bearing, hierarchical manufacturing, and integration with existing technologies. Herein, we report self-reducing and grafting copper onto paper cellulose fiber networks activated through a nonequilibrium photonic approach. A three-dimensional volumetric paper conductor exhibits a sheet resistance of 5 Ω/square, hydrophobicity with a water contact angle of 95°, and tailored thermal emissivity for thermal management. Furthermore, the cellulose-Cu network conductor facilitated the infiltration of silicon during lithiation and acted as a buffer to mitigate mechanical failure due to capillary action. Interestingly, the cellulose-Cu-silicon paper conductors achieved real-time pressure monitoring during the (de)lithiation cycles. Three-dimensional porous structured paper conductors demonstrate the potential for integrating electronic and ionic transport as flexible biodegradable battery electrodes with real-time pressure sensing.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":""},"PeriodicalIF":9.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148675","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":"Phase Transition during Sintering of Layered Transition Metal Oxide Sodium Cathodes","authors":"Fangbo Ma, Hao Chen, Hu Wu, Xun-Lu Li, Xiaotong Liu, Bohua Wen, Jiayan Luo","doi":"10.1021/acs.nanolett.5c01518","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01518","url":null,"abstract":"Layered cathodes derived from precursor materials have garnered significant attention in sodium ion battery (SIB) research. However, the structure evolution mechanisms during the sintering process remain inadequately understood. In this work, two precursors with irregular and regular morphologies were subjected to identical calcination conditions to synthesize O3-NaNi_0.4Fe_0.2Mn_0.4O₂ cathodes. Comprehensive analysis revealed that the irregular precursor underwent heterogeneous Na⁺ diffusion, resulting in an <i>R</i>3̅<i>m</i> structure shell encapsulating a substantial rock-salt phase core during the solid-state sodiation process. This leads to drastic phase transition and generated unfavorable pores in the subsequent high-temperature process. In contrast, the regular quasi-spherical precursor maintains a uniform Na⁺ accessibility throughout the sintering process, which facilitated optimal phase evolution and yielded superior electrochemical performance. This investigation elucidates the critical relationship between precursor morphology and phase transition dynamics, providing crucial insights into the rational design of precursor-derived layered cathodes in SIB applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"151 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153768","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":"Biomass Based Moisture-Triggered Hybrid Actuator and Electric Generator with Self-Powered Motion Tracking Capability","authors":"Mingyuan Liu, Yijun Yao, Xinyang He, Zixiu Li, Yansong Liu, Hongxing Tao, Zhen Li, Yue Zhang, Liming Wang, Hongnan Zhang, Xiaohong Qin","doi":"10.1021/acs.nanolett.5c01624","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01624","url":null,"abstract":"Constructing moisture-triggered devices with actuation, power generation, and motion tracking capability simultaneously utilizing solution-processable biomass materials is intriguing while remaining a great challenge. Herein, we designed and integrated a device for synchronized actuation and energy output under moisture stimulation, which was constructed with Zn–C electrodes, a biomass film, and a PET film. The biomass membrane with hygroscopicity and ion transport was fabricated using the long-term stable microgel (CKM-GO) composed of cellulose, keratin, and graphene oxide (GO). The integrated device possessed both the fascinating actuation parameters (bending angle of 117°, response time of 3.5 s, curvature of 0.51 cm^–1) and energy output (output voltage of 1.2 V and current of 2.2 μA) at 80% RH. Furthermore, the assembled arms grasped–released an object under moisture stimulation, meanwhile the self-powered generated voltage signal tracked the operation process. The device with multiple moisture-responsive functions provides promising platforms for self-powered motion tracking, intelligent robotics, and energy production.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"35 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153770","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":"Unlocking Ampere-Level Nitrate Electroreduction to Ammonia Via the Built-In Electric Field in Monometallic Catalysts","authors":"Zhihong He, Qian Zhou, Xin Zi, Yong Zhang, Qing Li, Dongyang Li, Min Liu, Fang Yu, Haiqing Zhou","doi":"10.1021/acs.nanolett.5c00926","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00926","url":null,"abstract":"Bimetallic/multimetallic catalysts for nitrate reduction reaction (NO₃^–RR) have been extensively investigated benefiting from their synergistic effects in optimizing various intermediate adsorptions; however, the interphasic synergistic effects in monometallic catalysts are often overlooked. Here we report an interphasic synergy between electron-rich Co(OH)₂ and electron-deficient CoO, in which the asymmetric charge distribution in monometallic cobalt-based heterojunction derived from the built-in electric field (BEF) significantly accelerates electron transfer and lowers the energy barriers for NO₃^–RR. Theoretical calculations reveal that the chemical affinities of Co atoms toward NO₃^– and NO₂^– are significantly enhanced and even NO₃^– adsorption switches to a spontaneous process. Simultaneously, the BEF in monometallic Co-based heterostructures greatly reduces the energy barrier of the rate-determining step (*NO→*NOH) in the NO₃^–RR. Therefore, the resultant catalyst exhibits ampere-level NO₃^–RR performance, achieving a record NH₃ yield up to 73.9 mg h^–1 cm^–2 at a low potential of −0.2 V with a Faradaic efficiency (FE) of 95.6%.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"68 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153771","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}