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N-doped carbon quantum dot-induced cyano-enrichment enhances K-doped C3N4 for efficient photocatalytic H2O2 production n掺杂碳量子点诱导的氰富集增强了k掺杂C3N4光催化生成H2O2的效率
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-04 DOI: 10.1016/j.carbon.2025.120816
Shuanglong Li, Wei Li, Yongzhuo Yu, Chaoyu Lv, Wenxu Zhang, Xiaorui Huang, Yongyi Li, Shichao Jiao, Di Lin, Huixiang Yan, Huiyang Xv, Bo Wang
{"title":"N-doped carbon quantum dot-induced cyano-enrichment enhances K-doped C3N4 for efficient photocatalytic H2O2 production","authors":"Shuanglong Li,&nbsp;Wei Li,&nbsp;Yongzhuo Yu,&nbsp;Chaoyu Lv,&nbsp;Wenxu Zhang,&nbsp;Xiaorui Huang,&nbsp;Yongyi Li,&nbsp;Shichao Jiao,&nbsp;Di Lin,&nbsp;Huixiang Yan,&nbsp;Huiyang Xv,&nbsp;Bo Wang","doi":"10.1016/j.carbon.2025.120816","DOIUrl":"10.1016/j.carbon.2025.120816","url":null,"abstract":"<div><div>Photocatalytic hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) production represents a clean and sustainable synthesis method. In this work, a synergistic dual-strategy modification was developed to achieve cascade effects for enhancing the photocatalytic activity of bulk carbon nitride. The primary modification involved innovative incorporation of nitrogen-doped carbon quantum dots (NCQS) to facilitate potassium doping. The NCQS serve a dual function. On the one hand, they act as cyano-group inducers, promoting ring-opening within the potassium-doped carbon nitride structure to form cyano groups and thereby facilitate cyano functionality enrichment. On the other hand, the NCQS act as a surface modifier that synergized with K<sup>+</sup> to directly enhance charge carrier migration across interlayers and surfaces. The secondary modification employed alkaline hydrothermal treatment to introduce nitrogen vacancies (NVs). Combining the experimental results and DFT calculation, it can be seen that the enriched cyano groups and NVs modify the electronic structure of carbon nitride, which promotes the separation and transport of charge carriers while providing abundant cyano-active reaction sites for the oxygen reduction reaction. Benefiting from the modification, The KCNC5–K achieves an outstanding H<sub>2</sub>O<sub>2</sub> production rate of 12,366 μmol g<sup>−1</sup> h<sup>−1</sup> (a 107.2-fold enhancement over g-C<sub>3</sub>N<sub>4</sub>) with a remarkable H<sub>2</sub>O<sub>2</sub> selectivity of 80 %. This study not only proposes a novel approach for modulating the cyano groups on the surface of carbon nitride via incorporation of carbon quantum dots, but also offers valuable insights for the development of high-performance carbon nitride-based photocatalysts for hydrogen peroxide production.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120816"},"PeriodicalIF":11.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sacrificial-assisted long-range lamellar MXene/rGO aerogel for electromagnetic interference shielding and thermal insulation 牺牲辅助远程片层MXene/rGO气凝胶,用于电磁干扰屏蔽和隔热
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-04 DOI: 10.1016/j.carbon.2025.120759
Haodong Gu , Li Tian , Qiuqi Zhang , Xiao You , Mengmeng Wang , Feiyan Cai , Jinshan Yang , Shaoming Dong
{"title":"Sacrificial-assisted long-range lamellar MXene/rGO aerogel for electromagnetic interference shielding and thermal insulation","authors":"Haodong Gu ,&nbsp;Li Tian ,&nbsp;Qiuqi Zhang ,&nbsp;Xiao You ,&nbsp;Mengmeng Wang ,&nbsp;Feiyan Cai ,&nbsp;Jinshan Yang ,&nbsp;Shaoming Dong","doi":"10.1016/j.carbon.2025.120759","DOIUrl":"10.1016/j.carbon.2025.120759","url":null,"abstract":"<div><div>Electromagnetic protection and thermal protection are of great importance to delicate instruments. Aerogels with ordered structural orientation offer a huge potential in dissipating electromagnetic wave energy and isolating heat. However, achieving precise control over the long-range order in aerogels remains significant challenges, impeding their further development and multifunctional applications. Hence, the MXene/rGO aerogels (LMG) with long-range lamellar structure are constructed by sacrificial-assisted bidirectional freeze-casting. The LMG demonstrates superior electromagnetic interference (EMI) shielding performance with an absolute shielding effectiveness (SSE/t) of 14933.3 dB cm<sup>2</sup> g<sup>−1</sup>. The highly ordered layers effectively hinder the thermal conduction between adjacent layers, achieving a thermal conductivity of only 30.8 mW m<sup>−1</sup> K<sup>−1</sup>. Moreover, the LMG demonstrates excellent elasticity and structural stability, maintaining its structural integrity even under significant geometric deformations during fatigue tests (only 4.7 % residual strain and 5.5 % stress reduction). The long-range lamellar structure endows LMG with superior EMI shielding, thermal insulation and mechanical properties, providing a reliable design strategy for achieving structural orderliness and multifunctional applications in aerogels.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120759"},"PeriodicalIF":11.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced mechanical properties of graphene oxide reinforced aluminum with lamellar microstructure and crystallographic alignment 层状结构和晶体取向增强氧化石墨烯增强铝的力学性能
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-03 DOI: 10.1016/j.carbon.2025.120792
Liu Chen , Zhencheng Li , Shaojiu Yan , Hubin Luo , Xingwu Li , Aixue Sha
{"title":"Enhanced mechanical properties of graphene oxide reinforced aluminum with lamellar microstructure and crystallographic alignment","authors":"Liu Chen ,&nbsp;Zhencheng Li ,&nbsp;Shaojiu Yan ,&nbsp;Hubin Luo ,&nbsp;Xingwu Li ,&nbsp;Aixue Sha","doi":"10.1016/j.carbon.2025.120792","DOIUrl":"10.1016/j.carbon.2025.120792","url":null,"abstract":"<div><div>A lamellar microstructure with crystallographic alignment was achieved in graphene oxide (GO) reinforced aluminum (Al) composites fabricated via powder metallurgy and mechanical processing. The addition of 1.0 wt% GO nearly doubled the tensile yield stress compared to the GO-free counterpart, with a slight reduction in uniform elongation from 12 % to 10 %. Electron back-scattered diffraction analysis revealed a crystallographic relationship between the GO layers and the aluminum matrix, where the <span><math><mrow><msub><mrow><mo>⟨</mo><mrow><mover><mn>1</mn><mo>‾</mo></mover><mn>10</mn></mrow><mo>⟩</mo></mrow><mtext>Al</mtext></msub></mrow></math></span> in both the <span><math><mrow><mo>⟨</mo><mn>111</mn><mo>⟩</mo></mrow></math></span> and <span><math><mrow><mo>⟨</mo><mn>001</mn><mo>⟩</mo></mrow></math></span> fibres, as well as the <span><math><mrow><msub><mrow><mo>{</mo><mn>111</mn><mo>}</mo></mrow><mtext>Al</mtext></msub></mrow></math></span> outside the dual fibres, tend to be parallel with the interface, say <span><math><mrow><msub><mrow><mo>⟨</mo><mrow><mover><mn>1</mn><mo>‾</mo></mover><mn>10</mn></mrow><mo>⟩</mo></mrow><mrow><mtext>in</mtext><mo>−</mo><mtext>fibre</mtext></mrow></msub><mo>∥</mo><msub><mrow><mo>{</mo><mn>0001</mn><mo>}</mo></mrow><mtext>GO</mtext></msub></mrow></math></span> and <span><math><mrow><msub><mrow><mo>{</mo><mn>111</mn><mo>}</mo></mrow><mrow><mtext>out</mtext><mo>−</mo><mtext>of</mtext><mo>−</mo><mtext>fibre</mtext></mrow></msub><mo>∥</mo><msub><mrow><mo>{</mo><mn>0001</mn><mo>}</mo></mrow><mtext>GO</mtext></msub></mrow></math></span>. The formation mechanisms were investigated in detail and attributed to the influence of graphene to both the dislocation slip and dynamic recrystallization during mechanical processing at elevated temperature. In addition, molecular dynamics simulations show that the alignment of <span><math><mrow><msub><mrow><mo>{</mo><mn>111</mn><mo>}</mo></mrow><mtext>Al</mtext></msub><mo>∥</mo><msub><mrow><mo>{</mo><mn>0001</mn><mo>}</mo></mrow><mtext>GO</mtext></msub></mrow></math></span> facilitates the dissociation of full dislocation to Shockley partials at interface, relieving mismatch stress and significantly improving the mechanical properties of the composite. These findings highlight the potential of GO to tailor microstructures and strengthen metal matrix composites.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120792"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon nano onions: Synthesis and potential applications 碳纳米洋葱:合成及其潜在应用
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-03 DOI: 10.1016/j.carbon.2025.120814
Anjali Chholak , Neetu Mev , Md Zainul Abedeen , Poonam Kumari , Lalita Yadav , Manish Sharma , Sumit Kumar Sonkar , Ragini Gupta
{"title":"Carbon nano onions: Synthesis and potential applications","authors":"Anjali Chholak ,&nbsp;Neetu Mev ,&nbsp;Md Zainul Abedeen ,&nbsp;Poonam Kumari ,&nbsp;Lalita Yadav ,&nbsp;Manish Sharma ,&nbsp;Sumit Kumar Sonkar ,&nbsp;Ragini Gupta","doi":"10.1016/j.carbon.2025.120814","DOIUrl":"10.1016/j.carbon.2025.120814","url":null,"abstract":"<div><div>Carbon nano onions (CNOs) are an inimitable type of nanocarbons composed of multilayer concentric graphitic shells, which resemble the structure of an onion and are referred to as CNOs. CNOs attract significant attention because of their unique structural properties and multiple applications. This review article is mainly divided into two parts. The first part focuses on the developmental journey of CNOs, encompassing their synthesis, growth mechanism and surface functionalization. The second part highlights different applications of CNOs, particularly their use in removing waste contaminants (such as organic dye, antibiotics, volatile/non-volatile organic compounds, heavy metal ions and oxo-anions etc.), their application in bioimaging, drug delivery, sensing, and energy storage devices etc. To make this review straightforward in every aspect, the important studies about the CNOs are summarized and discussed to give readers a comprehensive overview of CNOs as multifunctional nanomaterials with potential across various fields.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120814"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Constructing robust Cu and P Lewis acid-base pair sites on tubular g-C3N4 for promoting photocatalytic reduction of CO2 to CH4 在管状g-C3N4上构建稳健的Cu和P Lewis酸碱对位点,促进CO2光催化还原为CH4
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-03 DOI: 10.1016/j.carbon.2025.120793
Xiang Li , Shuangshuang Huai , Shijian Zhang , Xiuxiu Huang , Wenbin Ruan , Congliang Cheng , Jianli Chen , Ping Li , Yaner Ruan , Hewen Liu , Xiufang Wang
{"title":"Constructing robust Cu and P Lewis acid-base pair sites on tubular g-C3N4 for promoting photocatalytic reduction of CO2 to CH4","authors":"Xiang Li ,&nbsp;Shuangshuang Huai ,&nbsp;Shijian Zhang ,&nbsp;Xiuxiu Huang ,&nbsp;Wenbin Ruan ,&nbsp;Congliang Cheng ,&nbsp;Jianli Chen ,&nbsp;Ping Li ,&nbsp;Yaner Ruan ,&nbsp;Hewen Liu ,&nbsp;Xiufang Wang","doi":"10.1016/j.carbon.2025.120793","DOIUrl":"10.1016/j.carbon.2025.120793","url":null,"abstract":"<div><div>The CO<sub>2</sub> photoreduction to high-value-added products is accompanied by a complex activation and dissociation process, and the construction of multiple active sites on photocatalysts for both CO<sub>2</sub> reduction and H<sub>2</sub>O dissociation simultaneously is still a daunting challenge. Herein, Cu as Lewis acid (LA) sites and P as Lewis base (LB) sites were successfully modified on the surface of tubular g-C<sub>3</sub>N<sub>4</sub> (P/Cu-TCN) to improve the performance of CO<sub>2</sub> photoreduction to CH<sub>4</sub> with H<sub>2</sub>O as a proton donor. The production of CH<sub>4</sub> is as high as 63.95 μmol g<sup>−1</sup> h<sup>−1</sup> over optimal P/Cu-TCN photocatalyst with an outstanding selectivity. The performance is much higher than those of the reported g–C<sub>3</sub>N<sub>4</sub>–based photocatalytic systems. Experimental results combined with theoretical simulation results show that the electrophilic Cu (Lewis acid) centers induce the activation of the C<img>O bond in CO<sub>2</sub>, while electron-enriched P (Lewis base) sites enhance the adsorption of pure water molecules and subsequent proton transfer processes. The incorporation of Cu and P acid-base pairs not only mitigates the elevated Gibbs free energy barrier associated with C<img>O bond cleavage during CO<sub>2</sub> photoreduction and facilitates the overall proton-coupled electron transfer kinetics, but also suppresses the recombination of photogenerated charge carriers while enhancing charge transport efficiency. All of these together improve the catalytic efficiency of the CO<sub>2</sub>-to-CH<sub>4</sub> transformation. This study offers research suggestions for the modification of g-C<sub>3</sub>N<sub>4</sub> to enhance CO<sub>2</sub> reduction.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120793"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comprehensive performance analysis of diamond Schottky diodes with argon-ion-modified oxygen-terminated surfaces 氩离子修饰端氧面金刚石肖特基二极管的综合性能分析
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-03 DOI: 10.1016/j.carbon.2025.120813
Bo Liang , Benjian Liu , Wei Liang , Saifei Fan , Chuanlong Li , Wenchao Zhang , Ziyi Chen , Liangyu Liu , He Jia , Yiyong Zuo , Tianyue Chen , Zhaokai Sang , Zhandong Cao , Kang Liu , Sen Zhang , A.P. Bolshakov , V.G. Ralchenko , Bing Dai , Jiaqi Zhu
{"title":"Comprehensive performance analysis of diamond Schottky diodes with argon-ion-modified oxygen-terminated surfaces","authors":"Bo Liang ,&nbsp;Benjian Liu ,&nbsp;Wei Liang ,&nbsp;Saifei Fan ,&nbsp;Chuanlong Li ,&nbsp;Wenchao Zhang ,&nbsp;Ziyi Chen ,&nbsp;Liangyu Liu ,&nbsp;He Jia ,&nbsp;Yiyong Zuo ,&nbsp;Tianyue Chen ,&nbsp;Zhaokai Sang ,&nbsp;Zhandong Cao ,&nbsp;Kang Liu ,&nbsp;Sen Zhang ,&nbsp;A.P. Bolshakov ,&nbsp;V.G. Ralchenko ,&nbsp;Bing Dai ,&nbsp;Jiaqi Zhu","doi":"10.1016/j.carbon.2025.120813","DOIUrl":"10.1016/j.carbon.2025.120813","url":null,"abstract":"<div><div>Oxygen termination on diamond surfaces plays a critical role in determining the performance of diamond-based electronic and biosensing devices. However, limited insights into oxygen-terminated diamond surfaces have constrained further performance improvements. To bridge this gap, the current study developed a novel oxidation methodology, which enhanced both oxygen coverage and device performance. Current-voltage (<em>I</em>–<em>V</em>) and capacitance-voltage (<em>C</em>–<em>V</em>) measurements confirmed improved electrical characteristics. X-ray photoelectron spectroscopy (XPS) revealed increased oxygen coverage and reconstruction of the oxygen-terminated surfaces. Kelvin probe force microscopy (KPFM) verified the homogenous surface potential distribution following oxidation. The presence of acceptor interface states was further confirmed using KPFM under dark and ultraviolet illumination. Additionally, density functional theory (DFT) calculations provided theoretical support for the observed surface reconstruction and performance enhancement. Overall, the <em>I</em>–<em>V</em>, <em>C</em>–<em>V</em>, XPS, KPFM, and DFT analysis collectively establish correlations between oxygen termination composition, interface states, and Schottky barrier diode performance, offering new pathways for the optimization of diamond-based devices.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120813"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ti3C2Tx quantum dots achieve superior corrosion inhibition and lubrication via forming Ti–O–Fe coordination bonds: Experimental verification and computational investigation Ti3C2Tx量子点通过形成Ti-O-Fe配位键实现优异的缓蚀和润滑:实验验证和计算研究
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-03 DOI: 10.1016/j.carbon.2025.120798
Heng Zhang , Biao Hu , Yangmin Wu , Minglong Yan , Qinhao Zhang , Wenwu Xu , Wenjie Zhao
{"title":"Ti3C2Tx quantum dots achieve superior corrosion inhibition and lubrication via forming Ti–O–Fe coordination bonds: Experimental verification and computational investigation","authors":"Heng Zhang ,&nbsp;Biao Hu ,&nbsp;Yangmin Wu ,&nbsp;Minglong Yan ,&nbsp;Qinhao Zhang ,&nbsp;Wenwu Xu ,&nbsp;Wenjie Zhao","doi":"10.1016/j.carbon.2025.120798","DOIUrl":"10.1016/j.carbon.2025.120798","url":null,"abstract":"<div><div>Metal corrosion and mechanical wear result in a serious decrease in the service life of marine engineering equipment. Carbon-based quantum dots (CDs) are often used as corrosion inhibitors or lubricants due to their ease of functionalization and quantum size effect. However, the protection efficiency of CDs is limited by weak adsorption capacity, and additional doping of heteroatoms such as N and S is usually needed to enhance the adsorption. Here, Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> quantum dots (MQDs) were synthesized by using two-dimensional Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> sheets containing abundant functional groups on the surface as precursors. The corrosion inhibition efficiency of MQDs with a concentration of 400 mg L<sup>−1</sup> reached 94.2 %, and the coefficient of friction and wear rate were reduced by 67.6 % and 83.2 %, respectively, compared with the single NaCl solution. Surface analysis showed that MQDs blocked the penetration of corrosive species via forming a protective film on the steel surface through the formation of Ti–O–Fe coordination bonds. Notably, the thickness of protective film was affected by the pH of solution, reaching a maximum thickness of 215 nm at the NaCl solution with a pH of 7. Finally, density functional theory and molecular dynamics simulations were utilized to deeply reveal the adsorption mechanism of MQDs. This study provides new insights into the role of MQDs as dual-functional additives, which is of great significance in promoting the development of multifunctional marine engineering protective materials.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120798"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Epitaxial graphene integrated with a monolayer magnet 外延石墨烯与单层磁铁集成
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-02 DOI: 10.1016/j.carbon.2025.120794
Ivan S. Sokolov , Dmitry V. Averyanov , Oleg E. Parfenov , Alexey N. Mihalyuk , Alexander N. Taldenkov , Oleg A. Kondratev , Ilya A. Eliseyev , Sergey P. Lebedev , Alexander A. Lebedev , Andrey M. Tokmachev , Vyacheslav G. Storchak
{"title":"Epitaxial graphene integrated with a monolayer magnet","authors":"Ivan S. Sokolov ,&nbsp;Dmitry V. Averyanov ,&nbsp;Oleg E. Parfenov ,&nbsp;Alexey N. Mihalyuk ,&nbsp;Alexander N. Taldenkov ,&nbsp;Oleg A. Kondratev ,&nbsp;Ilya A. Eliseyev ,&nbsp;Sergey P. Lebedev ,&nbsp;Alexander A. Lebedev ,&nbsp;Andrey M. Tokmachev ,&nbsp;Vyacheslav G. Storchak","doi":"10.1016/j.carbon.2025.120794","DOIUrl":"10.1016/j.carbon.2025.120794","url":null,"abstract":"<div><div>Imprinting magnetism into graphene makes an important step to its applications in spintronics. An actively explored approach is proximity coupling of graphene to a 2D magnet. In these endeavors, the use of epitaxial graphene may bring significant advantages due to its superiority over the exfoliated counterpart and natural integration with the substrate but the problem of attaining magnetism persists. Here, we report synthesis and analysis of a heterostructure coupling epitaxial graphene with a regular lattice of magnetic atoms formed by Eu intercalation. The magnetization measurements reveal easy-plane 2D magnetism in the material, with the transition temperature controlled by low magnetic fields. The emerging negative magnetoresistance and anomalous Hall effect point at spin polarization of the carriers in graphene. In the paramagnetic phase, the magnetoresistance in graphene exhibits critical exponential behavior of the induced magnetic state. The intercalation does not compromise the parental electronic structure – quantum oscillations in the resistivity manifest low-mass carriers in graphene. The results are set against those for an isostructural material based on intercalated nonmagnetic Sr. Overall, the study expands the family of 2D magnets and establishes a prospective material for graphene-based spintronics.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120794"},"PeriodicalIF":11.6,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strategies for enhancing the initial coulombic efficiency of Si-based anodes in lithium-ion batteries 提高锂离子电池硅基阳极初始库仑效率的策略
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-02 DOI: 10.1016/j.carbon.2025.120746
Yuru Wang , Caiqin Gao , Gang Huang , Shihui Fu , Yongming Fan , Yuan Chen , Tiening Tan , Xiaodong Ma , Hua Meng , Youngjae Kim , Jianqiang Chen , Ye Wang , Yanqing Wang
{"title":"Strategies for enhancing the initial coulombic efficiency of Si-based anodes in lithium-ion batteries","authors":"Yuru Wang ,&nbsp;Caiqin Gao ,&nbsp;Gang Huang ,&nbsp;Shihui Fu ,&nbsp;Yongming Fan ,&nbsp;Yuan Chen ,&nbsp;Tiening Tan ,&nbsp;Xiaodong Ma ,&nbsp;Hua Meng ,&nbsp;Youngjae Kim ,&nbsp;Jianqiang Chen ,&nbsp;Ye Wang ,&nbsp;Yanqing Wang","doi":"10.1016/j.carbon.2025.120746","DOIUrl":"10.1016/j.carbon.2025.120746","url":null,"abstract":"<div><div>Si-based anodes are considered a pivotal material for next-generation high-energy-density lithium-ion batteries (LIBs) due to their significantly higher theoretical specific capacity compared to conventional carbon-based anodes. However, the low initial coulombic efficiency (ICE) of Si-based anodes leads to continuous lithium consumption, triggering severe cascading reactions and significantly compromising cycling stability, thereby hindering their practical implementation. To promote the development of Si-based anodes, researchers have extensively investigated the underlying the mechanisms of low ICE and proposed effective strategies to mitigate this issue. This review synthesizes the recent research progress, elucidates the fundamental causes of low ICE in Si-based anodes, and systematically summarizes various strategies to enhance ICE. It provides valuable insights for the rational design and preparation for high ICE Si-based anodes and lays a foundation for their industrial application as next-generation high-electron/ion-throughput LIBs anodes.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120746"},"PeriodicalIF":11.6,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Outside Front Cover - Journal name, Cover image, Volume issue details, ISSN, Cover Date, Elsevier Logo and Society Logo if required 外部封面-期刊名称,封面图片,卷刊细节,ISSN,封面日期,爱思唯尔标志和学会标志(如果需要)
IF 11.6 2区 材料科学
Carbon Pub Date : 2025-09-01 DOI: 10.1016/S0008-6223(25)00780-8
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