Carbon Letters最新文献_第2页

Iodine-free carbon cathodes for aqueous zinc–iodine batteries with supercapacitor-level rate performance

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2025-01-17 DOI: 10.1007/s42823-024-00836-9

Xiangyu Kong, Xinyang Zhang, Jie Zhang, Dewei Wang

{"title":"Iodine-free carbon cathodes for aqueous zinc–iodine batteries with supercapacitor-level rate performance","authors":"Xiangyu Kong, Xinyang Zhang, Jie Zhang, Dewei Wang","doi":"10.1007/s42823-024-00836-9","DOIUrl":"10.1007/s42823-024-00836-9","url":null,"abstract":"<div><p>Aqueous zinc–iodine batteries (AZIBs) are gaining attention for their ability to store and convert electrical energy. Nevertheless, their performance is hindered by the continual migration of polyiodides towards the zinc anodes, leading to undesirable side reactions, diminished coulombic efficiency, and compromised cycling stability. Traditional carbon materials have proven inadequate in resolving these challenges, mainly due to their limited iodine capacity and weak binding forces. Herein, we explore the use of porous carbon nanosheets (PCNSs) synthesized via the “Pharaoh’s Serpent” reaction as cathode electrodes in AZIBs without pre-load iodine. The PCNSs, characterized by their nanosheet structure and expansive specific surface area, not only facilitate a shorter diffusion path for rapid electrolyte infiltration but also provide numerous sites for ion adsorption and capacitive storage, markedly improving the efficacy of electrochemical reactions and ion migration rates. Utilizing the synthesized PCNSs as the cathode electrode in AZIBs, a specific capacity of 296 mAh g<sup>−1</sup> was achieved at 0.3 A g<sup>−1</sup>. Even when the current density increased to 30 A g<sup>−1</sup>, a specific capacity of 144 mAh g<sup>−1</sup> was still attained, with a capacity retention ratio of up to 48.6%, which is competitive with that of supercapacitors. In addition, the AZIBs demonstrated impressive cycling stability, retaining 103% of their capacity after 10,000 cycles, and a notable energy density of 266.4 Wh kg<sup>−1</sup> based on the cathode material. These findings significantly broaden the application of carbon materials in AZIBs research, emphasizing their potential in advancing AZIB technology.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"849 - 860"},"PeriodicalIF":5.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The detection of toxic gases (CO, FN3, HI, N2, CH4, N2O, and O3) using a wearable Kapton–graphene biosensor for environmental and biomedical applications

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-12-17 DOI: 10.1007/s42823-024-00834-x

Marzieh Ramezani Farani, Hanseung Kim, Munirah Alhammadi, Yun Suk Huh

{"title":"The detection of toxic gases (CO, FN3, HI, N2, CH4, N2O, and O3) using a wearable Kapton–graphene biosensor for environmental and biomedical applications","authors":"Marzieh Ramezani Farani, Hanseung Kim, Munirah Alhammadi, Yun Suk Huh","doi":"10.1007/s42823-024-00834-x","DOIUrl":"10.1007/s42823-024-00834-x","url":null,"abstract":"<div><p>Toxic gas emissions are a critical global health concern, responsible for numerous deaths each year. These hazardous gases can cause severe physiological reactions and even death upon exposure. To address this issue, we propose a graphene-Kapton-based flexible biosensor for non-invasive toxic gas detection. The sensor is designed to accurately detect and identify several harmful gases, including carbon monoxide (CO), fluorine azide (FN<sub>3</sub>), hydrogen iodide (HI), nitrogen (N<sub>2</sub>), methane (CH<sub>4</sub>), nitrous oxide (N<sub>2</sub>O), and ozone (O<sub>3</sub>). Utilizing the Computer Simulation Technology (CST) Studio Suite 2024, we simulate the detection process, focusing on advanced techniques and miniature flexible structures. The sensor’s active element is a graphene patch embedded within a polyimide (Kapton) film, which allows for precise determination of the RF planar resonant structure<i>’</i>s frequency response. The graphene–Kapton biosensor is shown to have remarkable detection performance, as demonstrated by the results of the simulation, with a diffusivity of <span>({9.09e}^{-08}[{m}^{2}/S])</span>, an accuracy of <span>({6.62e}^{-13})</span>, and a power loss of <span>(1.5 mW)</span>. These findings highlight the sensor<i>’</i>s potential as an effective tool for detecting and identifying toxic gases with high precision and efficiency.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"839 - 848"},"PeriodicalIF":5.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Advancing building management with nano-enhanced carbon materials: a machine learning-driven business and economic analysis

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-12-10 DOI: 10.1007/s42823-024-00826-x

Yuan Zhu, Khidhair Jasim Mohammed, Mohamed Gamal Elsehrawy, H. Elhosiny Ali, Hakim AL Garalleh

{"title":"Advancing building management with nano-enhanced carbon materials: a machine learning-driven business and economic analysis","authors":"Yuan Zhu, Khidhair Jasim Mohammed, Mohamed Gamal Elsehrawy, H. Elhosiny Ali, Hakim AL Garalleh","doi":"10.1007/s42823-024-00826-x","DOIUrl":"10.1007/s42823-024-00826-x","url":null,"abstract":"<div><p>Carbon aerogels including graphite and graphene have unique properties such as lightweight, strong, and insulative to roofing applications. Carbon aerogels offer innovative solutions in building management by enhancing thermal and acoustic insulation while reducing structural weight, aligning with the focus on economic and business analysis driven by machine learning. Traditional building materials often fail to meet contemporary energy efficiency and sustainability demands, underscoring the necessity for more advanced solutions. This project is dedicated to integrating carbon aerogels into roofing systems and employs Deep Neural Networks (DNNs) to optimize their performance and integration. The novelty of this study lies in its application of carbon aerogel technology—a cutting-edge, lightweight, and highly insulative material—specifically within roofing to analyze the practical evaluation of carbon aerogels’ thermal properties and economic viability in the construction industry. This study aims to rigorously assess carbon aerogels’ performance and financial impact on roofing applications. By conducting the thermal guard test and economic lifecycle evaluation, the study seeks to validate carbon aerogels’ enhanced energy efficiency and cost-effectiveness compared to traditional roofing materials. The study demonstrates that carbon aerogels offer superior thermal insulation in roofing applications, with a thermal conductivity of 0.02 W/m·K, significantly outperforming traditional materials. Economically, the high initial cost of carbon aerogels is effectively offset by substantial energy savings, estimated at $300 annually per square meter, resulting in a payback period of approximately 1.05 years. These findings are supported by rigorous testing and optimization through DNN, highlighting the material’s potential to enhance energy efficiency and sustainability in building practices.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"781 - 802"},"PeriodicalIF":5.5,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Bagasse-based porous flower-like MoS2/carbon composites for efficient microwave absorption

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-12-09 DOI: 10.1007/s42823-024-00832-z

Yingxiu Zhang, Lihui Xu, Jiahao Wang, Hong Pan, Meiran Dou, Yi Teng, Xueqiang Fu, Zhangyong Liu, Xinzhe Huang, Meng Wang

{"title":"Bagasse-based porous flower-like MoS2/carbon composites for efficient microwave absorption","authors":"Yingxiu Zhang, Lihui Xu, Jiahao Wang, Hong Pan, Meiran Dou, Yi Teng, Xueqiang Fu, Zhangyong Liu, Xinzhe Huang, Meng Wang","doi":"10.1007/s42823-024-00832-z","DOIUrl":"10.1007/s42823-024-00832-z","url":null,"abstract":"<div><p>Biomass-derived carbon materials have attracted considerable attention in electromagnetic wave (EMW) absorption applications due to their advantages of low cost, light weight, and sustainability. Herein, bagasse-based porous carbon (BPC) was prepared by canonization and activation process from natural waste bagasse. The porous flower-like MoS<sub>2</sub>/BPC composites were successfully prepared for efficient microwave absorption via hydrothermal process by in-situ formation of flower-like MoS<sub>2</sub> into the porous structure of BPC. The effect of hydrothermal time and hydrothermal temperature on surface morphology, degree of graphitization, surface chemical composition and impedance matching of the prepared samples was investigated. Results demonstrated that when the hydrothermal temperature was 220 °C, and the hydrothermal time was 24 h, the obtained MoS<sub>2</sub>/BPC sample (named as MoS<sub>2</sub>/BPC-220 ℃) showed the minimum reflection loss value (RL) of − 41.6 dB at 8.96 GHz and exhibited effective microwave absorption bandwidth (EAB) of 4.32 GHz at a relatively thin thickness of 1.5 mm. This work provides a promising way to prepare novel biomass-derived porous carbon for strong broadband electromagnetic absorption.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 1","pages":"145 - 160"},"PeriodicalIF":5.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 porosity in marine biomass-derived activated carbon via two-step CO2 activation and acidic decontamination

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-12-09 DOI: 10.1007/s42823-024-00833-y

Jueun Choi, Hyeonseok Yi, Toru Kato, Koji Saito, Hiroko Watanabe, Keiko Ideta, Takaaki Shimohara, Jin Miyawaki, Seong-Ho Yoon, Yoong Ahm Kim, Koji Nakabayashi

{"title":"Enhanced porosity in marine biomass-derived activated carbon via two-step CO2 activation and acidic decontamination","authors":"Jueun Choi, Hyeonseok Yi, Toru Kato, Koji Saito, Hiroko Watanabe, Keiko Ideta, Takaaki Shimohara, Jin Miyawaki, Seong-Ho Yoon, Yoong Ahm Kim, Koji Nakabayashi","doi":"10.1007/s42823-024-00833-y","DOIUrl":"10.1007/s42823-024-00833-y","url":null,"abstract":"<div><p>Marine biomass (MB) is gaining attention as a sustainable and eco-friendly carbon source within the carbon cycle, particularly in regions with extensive coastlines. However, the high content of alkali and alkaline earth metals (AAEMs) in MB poses challenges in producing functional carbon materials, like activated carbon (AC), with a high specific surface area (SSA). In this study, we employed a two-step CO<sub>2</sub> activation process, coupled with acid treatment, to successfully convert MB into highly porous AC. Preheating followed by nitric acid washing reduced AAEM content from 22.4 to 2.5 wt%, and subsequent atmospheric CO<sub>2</sub> activation produced AC with an SSA of 1700 m<sup>2</sup>/g and mesopores of 3–5 nm. A further treatment with a mixed acid solution of nitric and acetic acids reduced impurities to below 1.0 wt%. A second pressurized CO<sub>2</sub> activation at 1 MPa yielded AC with an SSA exceeding 2100 m<sup>2</sup>/g, with mesopores accounting for more than 50% of the total pore volume. This method demonstrates an effective approach to producing high-performance AC from MB for advanced applications.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"825 - 837"},"PeriodicalIF":5.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Correction: Carbon nanotubes as heterogeneous catalysts for the multicomponent reaction synthesis of heterocycles

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-12-09 DOI: 10.1007/s42823-024-00835-w

Ramin Javahershenas, Vadim A. Soloshonok, Karel D. Klika, Peter J. Jervis

引用次数: 0

Correction: Recent advances in activated carbon fibers for pollutant removal

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-11-26 DOI: 10.1007/s42823-024-00831-0

Jong-Hyun Joo, Seong-Hwang Kim, Jee Hoon Kim, Hyun-Ju Kang, Jeong Hoon Lee, Hye-Ji Jeon, Yeon Hee Jang, Jong-Hoon Lee, Seul-Yi Lee, Soo-Jin Park, Min-Kang Seo

引用次数: 0

Facile microwave hydrothermal synthesis of citric acid-derived carbon dots for photothermal therapy of cancers under NIR irradiation

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-11-07 DOI: 10.1007/s42823-024-00830-1

Yingying Jin, Huanhuan Qiao, Yichi Zhang, Yujia He, Shuangning Xie, Yiwen Gu, Fawei Lin

{"title":"Facile microwave hydrothermal synthesis of citric acid-derived carbon dots for photothermal therapy of cancers under NIR irradiation","authors":"Yingying Jin, Huanhuan Qiao, Yichi Zhang, Yujia He, Shuangning Xie, Yiwen Gu, Fawei Lin","doi":"10.1007/s42823-024-00830-1","DOIUrl":"10.1007/s42823-024-00830-1","url":null,"abstract":"<div><p>This paper is devoted to synthesizing a new type of CDs (carbon dots) with excellent NIR (near-infrared) emission in a biological water environment synthesized from small molecules. Citric acid was adopted as the precursor and treated by one-pot hydrothermal process in DMF solution with the assistance of a microwave. Urea (MH) and ammonium fluoride (MF) were adopted as nitrogen sources to synthesize two types of CDs, respectively. These conditions contributed to generate nanostructured carbon with a higher content of Pyrrolic-N, enrich the functional groups, and exfoliate the ordered layer-stacking structure, which finally contributed to the higher NIR absorption band at 808 nm. The physicochemical properties and photothermal conversion ability were fully evaluated by UV–Vis-NIR (ultraviolet–visible light-NIR) absorption and photothermal experiments. MF possessed stronger absorption property and temperature-rising effect in the NIR region than MH, but both exhibited desirable photothermal stability. Next, the in vitro and in vivo experiments demonstrated that both MF and MH exhibited no significant toxicity for cells. NIR irradiation on CDs solution displayed an excellent killing effect on HeLa (breast cancer) and MCF7 (cervical cancer) cells but strongly depended on the concentration of CDs. MH had a weaker killing effect on MCF7 cells compared with MF in the same concentration. But HeLa cells suffered death from lower concentration of MH under NIR irradiation. Both MH and MF exhibited excellent therapy effects and no obvious tissue damage for these major organs of nude mice and BALB/C mice. Above all, both MF and MH with excellent photothermal effect under NIR irradiation had desirable NIR-triggered therapeutic effect on MCF7 and HeLa cells, while they also exhibited good biocompatibility without NIR irradiation.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"813 - 823"},"PeriodicalIF":5.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Vacuum-assisted exfoliation method for large-area, high-quality graphene flakes in nanodevice applications

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-11-05 DOI: 10.1007/s42823-024-00829-8

Minwook Kim, Van Huy Nguyen, Sunil Kumar, Sohee Lee, Muhammad Suleman, Zhigang Jiang, Takashi Taniguchi, Kenji Watanabe, Yongho Seo

{"title":"Vacuum-assisted exfoliation method for large-area, high-quality graphene flakes in nanodevice applications","authors":"Minwook Kim, Van Huy Nguyen, Sunil Kumar, Sohee Lee, Muhammad Suleman, Zhigang Jiang, Takashi Taniguchi, Kenji Watanabe, Yongho Seo","doi":"10.1007/s42823-024-00829-8","DOIUrl":"10.1007/s42823-024-00829-8","url":null,"abstract":"<div><p>Mechanical exfoliation has been a preferred method for obtaining various two-dimensional (2D) materials due to its ability to produce high-quality thin flakes. However, traditional exfoliation techniques often yield flakes of limited size and low yield. Herein, we present a systematic approach to improve mechanical exfoliation by using vacuum treatment to enhance the van der Waals forces between the substrate and the 2D material. This method comprises oxygen plasma cleaning followed by vacuum treatment, effectively removing organic adsorbates from the substrate and maximizing contact between the outermost layer of 2D material and the substrate. This vacuum-assisted exfoliation approach substantially enhances both the yield and flake size of graphene, resulting in single-layer graphene (SLG) flakes approximately eighty times larger than those achieved through conventional methods. The quality of the exfoliated SLG was assessed using Raman spectroscopy and atomic force microscopy (AFM), which confirmed that it is highly similar to that obtained from conventional exfoliation. Furthermore, the exfoliated SLG flakes were encapsulated between hexagonal boron nitride (hBN) layers and fabricated into SLG field-effect transistors (FETs). These devices exhibited high-performance characteristics, yielding a field-effect mobility (µ) of approximately 110,000 <span>({text{cm}}^{2}/V cdot s)</span> at room condition, demonstrating the effectiveness of the vacuum-assisted exfoliation method in producing high-quality, large-area graphene suitable for advanced electronic applications.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"803 - 812"},"PeriodicalIF":5.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effect of improved dispersibility of an MWCNT conductive material by oxyfluorination on the electrochemical performance of SiOx/C-based electrodes for lithium-ion batteries

IF 5.5 3区材料科学

Carbon Letters Pub Date : 2024-11-05 DOI: 10.1007/s42823-024-00828-9

Dongki Kim, Chaehun Lim, Seongjae Myeong, Eunseon Chae, Bo Kyoung Kim, Young-Seak Lee

{"title":"Effect of improved dispersibility of an MWCNT conductive material by oxyfluorination on the electrochemical performance of SiOx/C-based electrodes for lithium-ion batteries","authors":"Dongki Kim, Chaehun Lim, Seongjae Myeong, Eunseon Chae, Bo Kyoung Kim, Young-Seak Lee","doi":"10.1007/s42823-024-00828-9","DOIUrl":"10.1007/s42823-024-00828-9","url":null,"abstract":"<div><p>Oxyfluorination treatment was used to enhance the electrochemical properties of SiOx/C-based lithium-ion battery anode materials by improving the dispersibility of multi-walled carbon nanotubes, which are conductive materials. The dispersibility, chemical, and morphological characteristics of the oxyfluorinated carbon nanotubes were confirmed through various analyses. In addition, the effect of oxyfluorination was analyzed by a lithium-ion battery performance test, and the discharge capacity and cycling stability were significantly improved. The introduction of oxygen functional groups onto the surface of the carbon nanotubes improved their dispersibility. The fluorine functional groups also acted as catalysts for the introduction of these oxygen functional groups onto the surface and improved the cycling stability by forming a LiF-based solid electrolyte interphase layer. The high discharge capacity and improved cycling stability of these lithium-ion batteries were attributed to the enhanced dispersibility of carbon nanotubes induced by oxyfluorination and the resulting enhancement of the 3D network in the anode material promoting the movement of lithium ions and electrons.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 1","pages":"373 - 381"},"PeriodicalIF":5.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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