Pub Date : 2025-12-10DOI: 10.1021/acs.nanolett.5c03367
Bozo Vareskic, Finn G. Kennedy, Takashi Taniguchi, Kenji Watanabe, Kenji Yasuda, Daniel C. Ralph
We fabricate and measure electrically gated tunnel junctions in which the insulating barrier is a sliding van der Waals ferroelectric made from parallel-stacked bilayer hexagonal boron nitride and the electrodes are single-layer graphene. Despite the nominally symmetric tunnel-junction structure, these devices can exhibit substantial electroresistance upon reversing the ferroelectric polarization. The magnitude and sign of tunneling electroresistance are tunable by bias and gate voltage. We show that this behavior can be understood within a simple tunneling model that takes into account the quantum capacitance of the graphene electrodes, so that the tunneling densities of states in the electrodes are separately modified as a function of bias and gate voltage.
{"title":"Gate-Tunable Electroresistance in a Sliding Ferroelectric Tunnel Junction","authors":"Bozo Vareskic, Finn G. Kennedy, Takashi Taniguchi, Kenji Watanabe, Kenji Yasuda, Daniel C. Ralph","doi":"10.1021/acs.nanolett.5c03367","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c03367","url":null,"abstract":"We fabricate and measure electrically gated tunnel junctions in which the insulating barrier is a sliding van der Waals ferroelectric made from parallel-stacked bilayer hexagonal boron nitride and the electrodes are single-layer graphene. Despite the nominally symmetric tunnel-junction structure, these devices can exhibit substantial electroresistance upon reversing the ferroelectric polarization. The magnitude and sign of tunneling electroresistance are tunable by bias and gate voltage. We show that this behavior can be understood within a simple tunneling model that takes into account the quantum capacitance of the graphene electrodes, so that the tunneling densities of states in the electrodes are separately modified as a function of bias and gate voltage.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"142 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145711462","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}
Pub Date : 2025-12-10DOI: 10.1021/acs.nanolett.5c05194
Alexander V. Butenko, Daniel Mayzlin, Yitzhak Mastai, Moshe Deutsch, Daeyeon Lee, Eli Sloutskin
Crystalline mixed oil–surfactant monolayers temperature-controllably form at surfactant-decorated oil–water interfaces and, for many surfactant–oil combinations, govern emulsion-droplet division, shape evolution, and related phenomena. While the equilibrium behavior of these ≈2 nm thick interfacial crystals (ICs) has been extensively investigated, their response to perturbations, relevant to real-world applications, remains largely unexplored. We probe how ICs respond to rapid expansion and uncover unconventional non-equilibrium molecular composition states, impacting emulsion stability and interfacial permeability.
{"title":"Healing Ruptured 2D Crystals via Non-equilibrium Composition States","authors":"Alexander V. Butenko, Daniel Mayzlin, Yitzhak Mastai, Moshe Deutsch, Daeyeon Lee, Eli Sloutskin","doi":"10.1021/acs.nanolett.5c05194","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c05194","url":null,"abstract":"Crystalline mixed oil–surfactant monolayers temperature-controllably form at surfactant-decorated oil–water interfaces and, for many surfactant–oil combinations, govern emulsion-droplet division, shape evolution, and related phenomena. While the equilibrium behavior of these ≈2 nm thick interfacial crystals (ICs) has been extensively investigated, their response to perturbations, relevant to real-world applications, remains largely unexplored. We probe how ICs respond to rapid expansion and uncover unconventional non-equilibrium molecular composition states, impacting emulsion stability and interfacial permeability.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"7 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145711463","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}
Pub Date : 2025-12-10DOI: 10.1021/acs.nanolett.5c04884
Yi-Shan Liu,Wen-Jia Shi,Hua-Dong Li,Yue Liu,Chao-Qiang Li,Pei-Qiang Ma,Bang-Ce Ye
Exogenous uricase (UOx) has been employed in hyperuricemia treatment, but its foreign protein nature induces an immunogenicity risk and short circulatory half-life in vivo, limiting clinical application. To address these limitations, we developed a DNA origami-based UOx nanovehicle (UOxNV) with a double-layer structure. UOx was site-specifically anchored on a six-helix bundle DNA scaffold, while an albumin-binding domain peptide (ABD) on the outer layer selectively bound serum albumin (SA) to form a protective SA shell. As a proof of concept, we demonstrated UOxNV had enhanced serum stability and a weakened inflammatory response in comparison with those of free UOx. An extended circulatory half-life and a sustained serum uric acid-lowering efficacy were further confirmed in a mouse model. This study presents a novel strategy utilizing DNA nanotechnology to overcome key limitations in current UOx therapeutics, advancing biomedical nanotechnology applications.
{"title":"A DNA Origami-Based Uricase Nanovehicle for Reducing Blood Uric Acid Levels","authors":"Yi-Shan Liu,Wen-Jia Shi,Hua-Dong Li,Yue Liu,Chao-Qiang Li,Pei-Qiang Ma,Bang-Ce Ye","doi":"10.1021/acs.nanolett.5c04884","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04884","url":null,"abstract":"Exogenous uricase (UOx) has been employed in hyperuricemia treatment, but its foreign protein nature induces an immunogenicity risk and short circulatory half-life in vivo, limiting clinical application. To address these limitations, we developed a DNA origami-based UOx nanovehicle (UOxNV) with a double-layer structure. UOx was site-specifically anchored on a six-helix bundle DNA scaffold, while an albumin-binding domain peptide (ABD) on the outer layer selectively bound serum albumin (SA) to form a protective SA shell. As a proof of concept, we demonstrated UOxNV had enhanced serum stability and a weakened inflammatory response in comparison with those of free UOx. An extended circulatory half-life and a sustained serum uric acid-lowering efficacy were further confirmed in a mouse model. This study presents a novel strategy utilizing DNA nanotechnology to overcome key limitations in current UOx therapeutics, advancing biomedical nanotechnology applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"139 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145717334","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}
Nanomaterials possess unique electronic properties distinct from bulk systems, and spatially resolved techniques such as nano-ARPES now allow for local band structure measurements at the nanoscale. However, theoretical tools for interpreting band dispersion in finite, aperiodic systems remain limited. Here, we propose a "giant molecule band unfolding" (GMBU) procedure that enables the extraction of band dispersion from molecular orbital levels of finite systems without assuming periodic boundary conditions. Using first-principles calculations for graphene, tungsten disulfide, and bismuth/silver surface alloy nanoflakes, we successfully reproduced the characteristic band structures of Dirac cones, spin-valley locking, and Rashba spin splitting, respectively. Our spin-resolved formulation visualizes spin textures and provides an efficient framework for analyzing spintronic and valleytronic properties. GMBU enabled visualization of band dispersion, even when nanoflakes were bent. The method bridges discrete and continuous electronic descriptions and is applicable across dimensionalities and symmetry classes, offering new possibilities for understanding and designing functional nanoscale materials.
{"title":"Band Unfolding in Finite Nanostructures: Visualizing Dirac, Spin-Valley, and Rashba Features.","authors":"Naoya Yamaguchi,Sefty Yunitasari,Wardah Amalia,Chi-Cheng Lee,Taisuke Ozaki,Fumiyuki Ishii","doi":"10.1021/acs.nanolett.5c04721","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04721","url":null,"abstract":"Nanomaterials possess unique electronic properties distinct from bulk systems, and spatially resolved techniques such as nano-ARPES now allow for local band structure measurements at the nanoscale. However, theoretical tools for interpreting band dispersion in finite, aperiodic systems remain limited. Here, we propose a \"giant molecule band unfolding\" (GMBU) procedure that enables the extraction of band dispersion from molecular orbital levels of finite systems without assuming periodic boundary conditions. Using first-principles calculations for graphene, tungsten disulfide, and bismuth/silver surface alloy nanoflakes, we successfully reproduced the characteristic band structures of Dirac cones, spin-valley locking, and Rashba spin splitting, respectively. Our spin-resolved formulation visualizes spin textures and provides an efficient framework for analyzing spintronic and valleytronic properties. GMBU enabled visualization of band dispersion, even when nanoflakes were bent. The method bridges discrete and continuous electronic descriptions and is applicable across dimensionalities and symmetry classes, offering new possibilities for understanding and designing functional nanoscale materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"19 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145711038","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}
Pub Date : 2025-12-09DOI: 10.1021/acs.nanolett.5c03841
Manasi Mandal, Eunbi Rha, Abhijatmedhi Chotrattanapituk, Denisse Córdova Carrizales, Alexander Lygo, Kevin B. Woller, Mouyang Cheng, Ryotaro Okabe, Guomin Zhu, Shoki Kishida, Kiran Mak, Chu-Liang Fu, Simos Michalopoulos, Chuhang Liu, Lijun Wu, Yimei Zhu, Susanne Stemmer, Mingda Li
Cd3As2 is a Dirac semimetal that hosts a chiral anomaly, functioning as a platform to realize energy applications. We use fast-ion implantation to enhance the negative longitudinal magnetoresistance (NLMR)─signature of a chiral anomaly─in Nb-doped Cd3As2 thin films. High-energy ion implantation is used to investigate semiconductors and nuclear materials but is rarely employed to study topological materials. We use electrical transport and transmission electron microscopy to characterize the NLMR and crystallinity of Nb-doped Cd3As2. We find surface-doped thin films display a maximum NLMR around B = 7 T and bulk-doped thin films display a maximum over B = 9 T─all while maintaining crystallinity. This is more than a 100% relative enhancement of the maximum NLMR compared to pristine Cd3As2. Our work demonstrates the potential of high-energy ion implantation as a practical route to explore chiralitronic properties in topological semimetals.
{"title":"Tuning Chiral Anomaly Signature in a Dirac Semimetal via Fast-Ion Implantation","authors":"Manasi Mandal, Eunbi Rha, Abhijatmedhi Chotrattanapituk, Denisse Córdova Carrizales, Alexander Lygo, Kevin B. Woller, Mouyang Cheng, Ryotaro Okabe, Guomin Zhu, Shoki Kishida, Kiran Mak, Chu-Liang Fu, Simos Michalopoulos, Chuhang Liu, Lijun Wu, Yimei Zhu, Susanne Stemmer, Mingda Li","doi":"10.1021/acs.nanolett.5c03841","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c03841","url":null,"abstract":"Cd<sub>3</sub>As<sub>2</sub> is a Dirac semimetal that hosts a chiral anomaly, functioning as a platform to realize energy applications. We use fast-ion implantation to enhance the negative longitudinal magnetoresistance (NLMR)─signature of a chiral anomaly─in Nb-doped Cd<sub>3</sub>As<sub>2</sub> thin films. High-energy ion implantation is used to investigate semiconductors and nuclear materials but is rarely employed to study topological materials. We use electrical transport and transmission electron microscopy to characterize the NLMR and crystallinity of Nb-doped Cd<sub>3</sub>As<sub>2</sub>. We find surface-doped thin films display a maximum NLMR around <i>B</i> = 7 T and bulk-doped thin films display a maximum over <i>B</i> = 9 T─all while maintaining crystallinity. This is more than a 100% relative enhancement of the maximum NLMR compared to pristine Cd<sub>3</sub>As<sub>2</sub>. Our work demonstrates the potential of high-energy ion implantation as a practical route to explore chiralitronic properties in topological semimetals.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"13 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704816","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}
The uncontrollable dendrite growth in lithium metal batteries severely compromises their safety and commercial viability. This study designs a chemical potential well via a friction strategy, employing zinc phthalocyanine (ZnPc) to form an in situ lithiated interlayer comprising dilithium phthalocyanine (Li2Pc) and nano-Zn grains. The planar π-π conjugated molecular clusters with Zn sites create a potential well structure, guiding uniform lithium-ion deposition and enabling dendrite-free anodes. Consequently, the symmetric cell achieves an extended cycle life exceeding 3000 h at 1.0 mA/cm2 and 1.0 mAh/cm2. Full cells with high-loading LiFePO4 retain 90% capacity after 550 cycles at 1 C. Moreover, Li||NCM811 pouch cells (1 Ah, 402 Wh/kg) maintain 82.3% capacity after 400 cycles at 0.5 C. This work provides an effective strategy for the development and design of stable lithium metal anode interfaces.
{"title":"Friction-Induced Chemical Potential Wells in a Conjugated Matrix for Dendrite-Free Lithium Metal Anodes.","authors":"Shaozhen Huang,Haoling Liu,Kun Li,Zhangdi Xie,Wenhao Li,Lin Mei,Libao Chen","doi":"10.1021/acs.nanolett.5c04595","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04595","url":null,"abstract":"The uncontrollable dendrite growth in lithium metal batteries severely compromises their safety and commercial viability. This study designs a chemical potential well via a friction strategy, employing zinc phthalocyanine (ZnPc) to form an in situ lithiated interlayer comprising dilithium phthalocyanine (Li2Pc) and nano-Zn grains. The planar π-π conjugated molecular clusters with Zn sites create a potential well structure, guiding uniform lithium-ion deposition and enabling dendrite-free anodes. Consequently, the symmetric cell achieves an extended cycle life exceeding 3000 h at 1.0 mA/cm2 and 1.0 mAh/cm2. Full cells with high-loading LiFePO4 retain 90% capacity after 550 cycles at 1 C. Moreover, Li||NCM811 pouch cells (1 Ah, 402 Wh/kg) maintain 82.3% capacity after 400 cycles at 0.5 C. This work provides an effective strategy for the development and design of stable lithium metal anode interfaces.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"110 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145710749","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}
Terahertz (THz) spectroscopy can characterize the collective oscillations of free particles in two-dimensional (2D) materials. The resonant response appearing in the transmitted THz spectra is relevant to the 2D plasmon mode. Here, we investigate the spectral extinction of the THz wave transmitted through the graphene-integrated Bi2Se3 microstructure, where the bias voltage applied to the gate electrode controls the device sheet conductance. Comparing the spectral response of the device with the EM wave simulation result, we observe a consistent spectral modulation as a function of the input particle density. The simulation result further characterizes the Bi2Se3 Dirac plasmon polariton (DPP) coupled to graphene. We find that the large graphene polarizability enables efficient control of the Bi2Se3 DPP mode up to 70% using a moderate gate voltage range of -1 to 1 V. Our result can be used to understand the interlayer long-range Coulomb interaction between Dirac materials.
{"title":"Gate-Controlled Terahertz Modulation in Graphene-Integrated Bi2Se3 Microstructure.","authors":"Chihun In,Sumin Lee,Deepti Jain,Seongshik Oh,Moon-Ho Jo,Hyunyong Choi","doi":"10.1021/acs.nanolett.5c04768","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04768","url":null,"abstract":"Terahertz (THz) spectroscopy can characterize the collective oscillations of free particles in two-dimensional (2D) materials. The resonant response appearing in the transmitted THz spectra is relevant to the 2D plasmon mode. Here, we investigate the spectral extinction of the THz wave transmitted through the graphene-integrated Bi2Se3 microstructure, where the bias voltage applied to the gate electrode controls the device sheet conductance. Comparing the spectral response of the device with the EM wave simulation result, we observe a consistent spectral modulation as a function of the input particle density. The simulation result further characterizes the Bi2Se3 Dirac plasmon polariton (DPP) coupled to graphene. We find that the large graphene polarizability enables efficient control of the Bi2Se3 DPP mode up to 70% using a moderate gate voltage range of -1 to 1 V. Our result can be used to understand the interlayer long-range Coulomb interaction between Dirac materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"44 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704395","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}
Pub Date : 2025-12-09DOI: 10.1021/acs.nanolett.5c04191
Shifan Wang,Naoki Higashitarumizu,Hyong Min Kim,Theodorus Jonathan Wijaya,I K M Reaz Rahman,Shu Wang,Enrico Della Gaspera,James Bullock,Ali Javey
Carbon nanotubes (CNTs) possess exceptional optoelectronic properties, including broadband absorption and high absorption coefficients, making them promising candidates for photodetector applications. However, conventional designs often rely on single or aligned nanotubes, which restrict device scalability and require complex fabrication techniques. In this work, we address these limitations by utilizing CNT-suspended solutions to fabricate large-area photodetectors based on CNT networks via vacuum filtration and direct laser scribing. CNT networks are uniformly formed onto low-thermal-conductance polymeric filter papers that serve as substrates and mitigate the need for suspended structures, reducing the fabrication complexity and cost. The CNT films are patterned into single devices and 49-pixel linear arrays by using a laser-cutting process, enabling scalable and cost-effective production. The resulting devices operate as bolometers and exhibit broad spectral sensitivity extending from visible to midwave infrared, showing stable operation at room temperature. We further demonstrate proof-of-concept IR imaging using linear arrays.
{"title":"Broadband Infrared Carbon Nanotube Linear Photodetector Arrays.","authors":"Shifan Wang,Naoki Higashitarumizu,Hyong Min Kim,Theodorus Jonathan Wijaya,I K M Reaz Rahman,Shu Wang,Enrico Della Gaspera,James Bullock,Ali Javey","doi":"10.1021/acs.nanolett.5c04191","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04191","url":null,"abstract":"Carbon nanotubes (CNTs) possess exceptional optoelectronic properties, including broadband absorption and high absorption coefficients, making them promising candidates for photodetector applications. However, conventional designs often rely on single or aligned nanotubes, which restrict device scalability and require complex fabrication techniques. In this work, we address these limitations by utilizing CNT-suspended solutions to fabricate large-area photodetectors based on CNT networks via vacuum filtration and direct laser scribing. CNT networks are uniformly formed onto low-thermal-conductance polymeric filter papers that serve as substrates and mitigate the need for suspended structures, reducing the fabrication complexity and cost. The CNT films are patterned into single devices and 49-pixel linear arrays by using a laser-cutting process, enabling scalable and cost-effective production. The resulting devices operate as bolometers and exhibit broad spectral sensitivity extending from visible to midwave infrared, showing stable operation at room temperature. We further demonstrate proof-of-concept IR imaging using linear arrays.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"6 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704396","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}
In the Supporting Information of our original article, there is an error in Figure S3c. The correct Figure S3 is below. We apologize for the error and any consequent inconvenience to the readers. Figure S3. (a–h) TEM images of D1@HMON2 (a), D2@HMON2 (b), D3@HMON2 (c), D4@HMON2 (d), D1@HMON2@FG1 (e), D1@HMON2@FG2 (f), D1@HMON2@FG3 (g), and D1@HMON2@FG4 (h). (i) Summary of the synthesis conditions and characterization results of D1@HMON2@FG1–4. This article has not yet been cited by other publications.
{"title":"Correction to “Intelligent Pore Switch of Hollow Mesoporous Organosilica Nanoparticles for High Contrast Magnetic Resonance Imaging and Tumor-Specific Chemotherapy”","authors":"Lin Huang, Jie Feng, Wenpei Fan, Wei Tang, Xiaoxiang Rong, Wangjun Liao, Zhenni Wei, Yikai Xu, Aiguo Wu, Xiaoyuan Chen, Zheyu Shen","doi":"10.1021/acs.nanolett.5c05899","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c05899","url":null,"abstract":"In the Supporting Information of our original article, there is an error in Figure S3c. The correct Figure S3 is below. We apologize for the error and any consequent inconvenience to the readers. Figure S3. (a–h) TEM images of D1@HMON2 (a), D2@HMON2 (b), D3@HMON2 (c), D4@HMON2 (d), D1@HMON2@FG1 (e), D1@HMON2@FG2 (f), D1@HMON2@FG3 (g), and D1@HMON2@FG4 (h). (i) Summary of the synthesis conditions and characterization results of D1@HMON2@FG1–4. This article has not yet been cited by other publications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"131 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704771","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}
Pub Date : 2025-12-09DOI: 10.1021/acs.nanolett.5c04298
Yang Li, Lianghao Wen, Kai Qiu, Han Luo, Cong Xu, Peng Zhang, Gaolong Zhu, Tiening Tan, Lingjun Song, Xiang Liu
Cobalt-free LiNiO2 (LNO) layered oxide cathodes are now positioned as a leading candidate for next-generation high-energy-density batteries, owing to their cost efficiency and ultra-high-capacity. Nevertheless, the coupled mechanical–electrochemical instability and thermally induced lattice oxygen evolution under extreme operating temperatures critically restrict their commercial deployment. Herein, we employ a high-valence W6+ doping strategy to alleviate lattice stress in the LNO during high-temperature operation. Simultaneously, this modification markedly strengthens the anchoring of surface lattice oxygen, effectively inhibiting oxygen release from the bulk structure. The W-doped LNO cathode demonstrates an initial discharge capacity of 236.9 mAh g–1 at 0.1 C under harsh 45 °C conditions. Remarkably, the modified electrode retains 77.6% of its capacity after 100 cycles, surpassing that of the pristine LNO, which suffers severe capacity degradation (65.4% retention) under identical testing protocols. This study presents critical strategic insights into the practical implementation of cobalt-free layered LNO cathodes under high-temperature operational environments.
由于其成本效益和超高容量，无钴LiNiO2 （LNO）层状氧化物阴极现在被定位为下一代高能量密度电池的主要候选材料。然而，在极端工作温度下，耦合的机械-电化学不稳定性和热诱导晶格析氧严重限制了它们的商业应用。在此，我们采用高价W6+掺杂策略来减轻LNO在高温运行时的晶格应力。同时，这种修饰明显加强了表面晶格氧的锚定，有效地抑制了氧从体结构中释放出来。在45°C的恶劣条件下，掺w的LNO阴极在0.1 C下的初始放电容量为236.9 mAh g-1。值得注意的是，经过100次循环后，修饰电极的容量仍保持77.6%，超过了在相同测试方案下遭受严重容量下降（保留65.4%）的原始LNO。该研究为在高温操作环境下实际实现无钴层状LNO阴极提供了关键的战略见解。
{"title":"Suppressing Lattice Oxygen Release and Mitigating Mechanical Stress Buildup in Co-Free LiNiO2 Cathodes","authors":"Yang Li, Lianghao Wen, Kai Qiu, Han Luo, Cong Xu, Peng Zhang, Gaolong Zhu, Tiening Tan, Lingjun Song, Xiang Liu","doi":"10.1021/acs.nanolett.5c04298","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c04298","url":null,"abstract":"Cobalt-free LiNiO<sub>2</sub> (LNO) layered oxide cathodes are now positioned as a leading candidate for next-generation high-energy-density batteries, owing to their cost efficiency and ultra-high-capacity. Nevertheless, the coupled mechanical–electrochemical instability and thermally induced lattice oxygen evolution under extreme operating temperatures critically restrict their commercial deployment. Herein, we employ a high-valence W<sup>6+</sup> doping strategy to alleviate lattice stress in the LNO during high-temperature operation. Simultaneously, this modification markedly strengthens the anchoring of surface lattice oxygen, effectively inhibiting oxygen release from the bulk structure. The W-doped LNO cathode demonstrates an initial discharge capacity of 236.9 mAh g<sup>–1</sup> at 0.1 C under harsh 45 °C conditions. Remarkably, the modified electrode retains 77.6% of its capacity after 100 cycles, surpassing that of the pristine LNO, which suffers severe capacity degradation (65.4% retention) under identical testing protocols. This study presents critical strategic insights into the practical implementation of cobalt-free layered LNO cathodes under high-temperature operational environments.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"110 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704817","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}
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