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Enhancing capacitance performance of functional group assisted carbon quantum dots derived from turmeric plant waste 提高姜黄植物废料衍生的功能团辅助碳量子点的电容性能
Carbon Trends Pub Date : 2024-06-01 DOI: 10.1016/j.cartre.2024.100370
S.S. Patil , A.G. Bhosale , S.S. Kundale , T.D. Dongale , S.A. Vanalakar
{"title":"Enhancing capacitance performance of functional group assisted carbon quantum dots derived from turmeric plant waste","authors":"S.S. Patil ,&nbsp;A.G. Bhosale ,&nbsp;S.S. Kundale ,&nbsp;T.D. Dongale ,&nbsp;S.A. Vanalakar","doi":"10.1016/j.cartre.2024.100370","DOIUrl":"10.1016/j.cartre.2024.100370","url":null,"abstract":"<div><p>Supercapacitors have attracted significant attention in modern devices as a promising solution for electrical energy storage due to their remarkable capability to undergo rapid charge and discharge cycles. While various materials are employed in the construction of supercapacitors, carbon-based materials emerge as a predominant choice within the commercial realm. In present report, our intention is to develop an effective supercapacitor device derived from natural biomass. Therefore, we have synthesized water soluble, monodisperse and fluorescent carbon quantum dots (CQDs) from turmeric leaves (<em>Curcuma caesia</em>) via a single step hydrothermal carbonization. Further, the doctor blade technique was employed to coat a layer of CQDs on stainless steel substrate using PVA as a binder. We observed the functional groups associated with QDs triggers the fast diffusion of ions and transmission of electrons with conducting substrate and electrolyte and thereby effectively charge and discharge mechanism. The supercapacitor based on carbon quantum dots (CQDs) based electrode exhibits exceptional performance characteristics with a remarkable specific capacitance of 468 F/g and highest energy density of 78.6 Wh/kg, superior to the values reported for most carbon-based supercapacitors. Further, we demonstrated the light dependent capacitive enhancement by depositing a thin P3HT layer over CQDs. Moreover, CQDs-based supercapacitor achieves a maximum power density of 733.2 W/kg when operated in a 1 M KOH electrolyte solution and an excellent capacitive retention of about 80 % even after 5000 cycles.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667056924000518/pdfft?md5=fa75c5a3927e1de652870289a8d50b74&pid=1-s2.0-S2667056924000518-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141280054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnesium-eutectic electrolyte as a winning combination for sustainable battery 镁-共晶电解质是可持续电池的制胜法宝
Carbon Trends Pub Date : 2024-06-01 DOI: 10.1016/j.cartre.2024.100366
Mohan Gorle , A. Vijay Kumar , Vatsala Rani Jetti
{"title":"Magnesium-eutectic electrolyte as a winning combination for sustainable battery","authors":"Mohan Gorle ,&nbsp;A. Vijay Kumar ,&nbsp;Vatsala Rani Jetti","doi":"10.1016/j.cartre.2024.100366","DOIUrl":"10.1016/j.cartre.2024.100366","url":null,"abstract":"<div><p>Eutectic-Magnesium electrolytes are sparsely used electrolytes in Magnesium ion batteries. In this context, readily available less toxic precursors based eutectic electrolytes are attracting increasing interest owing to the focus of sustainable battery development. The unique benefits of magnesium such as high specific capacity, low reduction potential, and remarkable reversibility without dendrimer formation are highly advantages when compare to lithium based batteries. Developing an optimal electrolyte composition is a key area of study in the field of battery technology. With improved cell performance, stability across cycles, and general safety, we hope to reduce unwanted interfacial reactions. In this study, we examined eutectic combination of trimethylamine hydrochloride and aluminium chloride (TMA: AlCl<sub>3</sub> = TMA) along with magnesium perchlorate to understand ion-solvation, complexation, thermal stability, ion transport and conduction, and electrochemical stability, certain physico-chemical and electrochemical parameters were evaluated prior to assessing the cell's performance. The salient features being an ionic conductivity (σ) of 6.25×10<sup>−3</sup> mS cm<sup>−1</sup> at 30 °C, remarkable performance retention with over 90 cycles of operation with the electrolyte and an impressive capacity of 90 mAh/g. The behaviour of ionic conductivity with temperature followed the Vogel-Tammann-Fulcher (VTF) equation. Moreover, the anodic stability around 2.5 V (Mg/Mg<sup>2+</sup>) when platinum is used as the working electrode endorses the suitability of the electrolyte for use in Rechargeable Magnesium Batteries (RMBs).The promising results of this first investigation open up new possibilities for investigating complementary pairings with the aim of improving the efficiency of magnesium-ion cells.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667056924000476/pdfft?md5=33a79e27512c0f01a7e4de13ba2b23b0&pid=1-s2.0-S2667056924000476-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141143804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co-pyrolysis of waste wood and plastic to produce quasi graphitic carbon: enhanced biochar properties for metal coatings through safe sequestration and green technology 协同热解废木材和塑料以生产准石墨碳:通过安全封存和绿色技术提高生物炭在金属涂层中的性能
Carbon Trends Pub Date : 2024-06-01 DOI: 10.1016/j.cartre.2024.100369
Anu Verma , Dhiman Banik , Chandra Sekhar Tiwary , Jayanta Bhattacharya
{"title":"Co-pyrolysis of waste wood and plastic to produce quasi graphitic carbon: enhanced biochar properties for metal coatings through safe sequestration and green technology","authors":"Anu Verma ,&nbsp;Dhiman Banik ,&nbsp;Chandra Sekhar Tiwary ,&nbsp;Jayanta Bhattacharya","doi":"10.1016/j.cartre.2024.100369","DOIUrl":"10.1016/j.cartre.2024.100369","url":null,"abstract":"<div><p>Use of waste polystyrene as an additive in the preparation of biowaste derived char can provide significant new properties that enhance the performance of the epoxy coating on steel surface. This work establishes a cost-effective Quasi-graphitic carbon (QGC) derived from the co-pyrolysis of Eucalyptus wood chips and polystyrene as a mix in epoxy (EP) matrix for enhanced the coating properties. The QGC material was characterized by FTIR, XRD, Raman, SEM-EDX, TGA, etc. Results show the incorporation of 0.1 wt.% QGC to the EP matrix enhances corrosion resistance by 98.6 % and boosts mechanical properties with a 245.45 % increase in hardness and a 57.31 % rise in elastic modulus compared to pure EP coatings. Microscopic analysis reveals a smoother, more compact surface with fewer structural defects comapred to pure EP coating. Adhesion tests score the category of 4B, 5B, and water contact angle improve to 102.8°, compared to 61.6° for pure EP coatings. These eco-friendly materials, created through environmentally conscious processes can be a safe alternative to the conventional toxic chemicals used to protect against corrosion,particularly in marine environments.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667056924000506/pdfft?md5=613506d177e44393bda4063151f2994c&pid=1-s2.0-S2667056924000506-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141281707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling the mechanism of CO oxidation catalyzed by sulfur-doped fullerenes with the DFT calculations 利用 DFT 计算揭示掺硫富勒烯催化 CO 氧化的机理
Carbon Trends Pub Date : 2024-06-01 DOI: 10.1016/j.cartre.2024.100371
Lijun Qu , Haoyu Zhang , Shengwei Huang , Hai Wang , Shihai Yan
{"title":"Unveiling the mechanism of CO oxidation catalyzed by sulfur-doped fullerenes with the DFT calculations","authors":"Lijun Qu ,&nbsp;Haoyu Zhang ,&nbsp;Shengwei Huang ,&nbsp;Hai Wang ,&nbsp;Shihai Yan","doi":"10.1016/j.cartre.2024.100371","DOIUrl":"https://doi.org/10.1016/j.cartre.2024.100371","url":null,"abstract":"<div><p>As an important intermediate for dual carbon targets, catalytic CO oxidation under mild conditions has received sufficient attention, as the reaction mechanism is directly related to the type of employed catalyst. High performance computing is performed with density functional theory to elucidate the mechanism of CO oxidation catalyzed by sulfur doped fullerene (C<em><sub>60-x</sub></em>S<em><sub>x</sub></em> (<em>x</em> = 1 ∼ 3)). The total activation energy for the first CO oxidation on C<em><sub>59</sub></em>S, C<em><sub>58</sub></em>S<em><sub>2</sub></em>, and C<em><sub>57</sub></em>S<em><sub>3</sub></em> increases gradually, as implies that the CO oxidation on C<em><sub>59</sub></em>S should be easier than those on the other two dopants. Distinct electrons (0.852 <em>e</em> and 1.479 <em>e</em>) are transferred to oxygen atoms (O<sub>2</sub>) from C<em><sub>59</sub></em>S with the adsorption of O<sub>2</sub> and CO. There is no synergistic effect for the doping S atoms. All elementary reactions on C<em><sub>59</sub></em>S are exothermic processes. This means that C<em><sub>59</sub></em>S is a potential material for addressing environmental protection issues and H<sub>2</sub> purification for fuel cell applications.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266705692400052X/pdfft?md5=54fad390ab8f9b1a7841e3741df6655a&pid=1-s2.0-S266705692400052X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141291952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Statistical analysis, regression, and neural network modeling of the tensile strength of thermoplastic unidirectional carbon fiber-polysulfone composites 热塑性单向碳纤维-聚砜复合材料拉伸强度的统计分析、回归和神经网络建模
Carbon Trends Pub Date : 2024-05-19 DOI: 10.1016/j.cartre.2024.100368
A.A. Stepashkin , N.Yu. Nikitin
{"title":"Statistical analysis, regression, and neural network modeling of the tensile strength of thermoplastic unidirectional carbon fiber-polysulfone composites","authors":"A.A. Stepashkin ,&nbsp;N.Yu. Nikitin","doi":"10.1016/j.cartre.2024.100368","DOIUrl":"10.1016/j.cartre.2024.100368","url":null,"abstract":"<div><p>High-strength and high-modulus carbon fibers are the basis of many composite materials used in power and automotive engineering as well as other mechanical engineering fields. Superstructural thermoplastic binders—like PPS, PSU, PES, and PEEK—are emerging quickly as a binder material. The mechanical properties of composite materials, especially tensile strength, are improved when high-strength and high-modulus fibers are combined with superstructural thermoplastic binders. However, the type of carbon fiber used, the concentration of thermoplastic binder, and the specifics of the production process all have a significant impact on the final mechanical properties of the composite material. As such, predicting these properties requires both a thorough analysis and a trustworthy mathematical model that predicts mechanical properties (tensile strength).</p><p>The study that is being presented takes a thorough approach to statistical analysis and model building that anticipates the tensile strength of composite material samples made of carbon filaments that have been impregnated with polysulfone (PSU), a thermoplastic polymer.</p><p>PSU thermoplastic polymer was used as a binder, and 817 samples of composite material with high-strength and high-modulus carbon fibers of four different grades were subjected to a thorough statistical analysis of the tensile test findings.</p><p>Nine distinct regression models and four CNN-based models with three distinct neuron activation functions were constructed based on the statistical analysis. The built-in models forecast the composite material's ultimate strength based on the specimen loading circumstances, filler qualities, and composition.</p><p>Significant differences were found in the mechanical properties of carbon fibers of different grades and types (high-strength and high-modulus) based on statistical analysis of the results of tensile tests. The results of Spearman's correlation study indicated a medium positive correlation between ultimate strength and polymer concentration and a weak negative association between ultimate strength and the density of the carbon fiber contained in the composite material. The strain corresponding to the ultimate strength and fiber density were found to have a medium negative correlation, whereas the polymer concentration showed a medium positive correlation. In the composite material, a very slight negative association was discovered between the concentration of polymers and the density of carbon fibers.</p><p>Test results were split into two categories while creating CNN and regression models: 75 % were used for model testing and 25 % were used for training. The CNN model with three layers of hidden parameters produced the best prediction results; the RMSE was 142.948 MPa and the Spearman correlation coefficient between the test strength and the anticipated values was 0.988.</p><p>Regression models' sensitivity analysis revealed that, up to a response variable (tens","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266705692400049X/pdfft?md5=959e6e55b7cd43717c86b632562a995b&pid=1-s2.0-S266705692400049X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141144637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing hydrogen sulphide removal efficiency: A DFT study on selected functionalized graphene-based materials 提高硫化氢的去除效率:选定功能化石墨烯基材料的 DFT 研究
Carbon Trends Pub Date : 2024-05-14 DOI: 10.1016/j.cartre.2024.100362
Toyese Oyegoke , Adnan Aliyu , Maryann I. Uzochuwu , Yahweh Hassan
{"title":"Enhancing hydrogen sulphide removal efficiency: A DFT study on selected functionalized graphene-based materials","authors":"Toyese Oyegoke ,&nbsp;Adnan Aliyu ,&nbsp;Maryann I. Uzochuwu ,&nbsp;Yahweh Hassan","doi":"10.1016/j.cartre.2024.100362","DOIUrl":"10.1016/j.cartre.2024.100362","url":null,"abstract":"<div><p>In response to the escalating demand for cleaner energy sources, this study investigates the potential of carefully selected functionalized graphene-based materials for enhancing hydrogen sulphide (H<sub>2</sub>S) removal in fuel streams, utilizing semi-empirical and density functional theory (DFT) calculations for molecular-level insights. A particular focus is placed on aliphatic methyl (-CH), alcohol (-COH), carboxylate (-COO), carbonyl (-CO), and acid (-COOH) -functionalized graphene, aiming to bridge gaps between desulphurization methods and graphene applications, specifically targeting H<sub>2</sub>S removal. Through extensive computational analyses, the research unravels the intricate interactions between chosen functionalized graphene materials and sulfur compounds like H<sub>2</sub>S, emphasizing mechanisms contributing to improved desulphurization efficiency. Our study's analysis highlights the superior performance of carboxylate (-COO)-functionalized graphene, mainly through dissociative adsorption mechanisms. The study systematically evaluates the influence of selected functional groups on adsorption activity, emphasizing the significance of dissociation. Overall, this research advances desulphurization strategies and underscores the potential of functionalized graphene in sustainable energy solutions.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667056924000439/pdfft?md5=6abc0f172c7b391a603bca7fe8906b27&pid=1-s2.0-S2667056924000439-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141049376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement of CO2 Adsorption Kinetics onto Carbon by Low-Frequency High Amplitude Resonant Vibrations 低频高振幅共振增强二氧化碳在碳上的吸附动力学
Carbon Trends Pub Date : 2024-05-09 DOI: 10.1016/j.cartre.2024.100361
Amirhosein Riahi , Ethan Heggem , Mario Caccia , Richard LaDouceur
{"title":"Enhancement of CO2 Adsorption Kinetics onto Carbon by Low-Frequency High Amplitude Resonant Vibrations","authors":"Amirhosein Riahi ,&nbsp;Ethan Heggem ,&nbsp;Mario Caccia ,&nbsp;Richard LaDouceur","doi":"10.1016/j.cartre.2024.100361","DOIUrl":"https://doi.org/10.1016/j.cartre.2024.100361","url":null,"abstract":"<div><p>Due to the excessive consumption of fossil fuels, which leads to significant greenhouse gas emissions and rapid climate change, it is crucial to develop various carbon capture and sequestration strategies. CO<sub>2</sub> sequestration in solid, porous adsorbents like low-cost biochar has emerged as a promising approach to achieve this goal. However, slow adsorption kinetics are one of the issues that limit the widespread use of this approach. While the characteristics of the biochar are important and impact CO<sub>2</sub> adsorption, the conditions under which adsorption occurs are equally critical. In this work, a novel strategy is proposed to accelerate the CO<sub>2</sub> uptake rate on carbon adsorbents by utilizing Low-Frequency High Amplitude resonant vibratory mixing during the adsorption process. With this approach, the rate of adsorption (characterized by the adsorption rate constant) exhibits an increase of 46.6% and 91.3%, as calculated by two different kinetic models: the Weber and Morris model, and the Pseudo-First-Order model. Experimental observations indicate that adsorption kinetics have a mixed control between external/internal diffusion and the physisorption process. Resonant vibrations enhance system energy, promoting collisions between CO<sub>2</sub> molecules and carbon surfaces, subsequently improving CO<sub>2</sub> transport and surface/gas interactions, facilitating the adsorption process and thus leading to enhanced kinetic rates. Furthermore, an analysis of variance determined the sensitivity of CO<sub>2</sub> uptake to several operating parameters associated with the resonant vibrations. This analysis indicated that the adsorption of CO<sub>2</sub> is most sensitive to the level of fill of the adsorption vessel and the time exposed to resonant vibrations.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667056924000427/pdfft?md5=84a407f558efb99d306a37840dfadc5c&pid=1-s2.0-S2667056924000427-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140914456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrogenated graphene systems: A novel growth and hydrogenation process 氢化石墨烯系统:新型生长和氢化工艺
Carbon Trends Pub Date : 2024-05-07 DOI: 10.1016/j.cartre.2024.100360
Samuel Escobar Veras , Ernesto Espada , Solimar Collazo , Marcel Grau , Rajesh Katiyar , Vladimir I. Makarov , Brad R. Weiner , Gerardo Morell
{"title":"Hydrogenated graphene systems: A novel growth and hydrogenation process","authors":"Samuel Escobar Veras ,&nbsp;Ernesto Espada ,&nbsp;Solimar Collazo ,&nbsp;Marcel Grau ,&nbsp;Rajesh Katiyar ,&nbsp;Vladimir I. Makarov ,&nbsp;Brad R. Weiner ,&nbsp;Gerardo Morell","doi":"10.1016/j.cartre.2024.100360","DOIUrl":"https://doi.org/10.1016/j.cartre.2024.100360","url":null,"abstract":"<div><p>Octadecylphosphonic acid self-assembled monolayers were used as a combined carbon and hydrogen source to grow graphene films on sapphire substrates via hot filament chemical vapor deposition. The functionalized substrates were sealed with a thin Cu film and heated to 950°C under Ar flow. After synthesis, the Cu was etched away. The graphene samples then underwent a hydrogenation treatment in the same reactor setup, exposed to a CH<sub>4</sub>/H<sub>2</sub> gas mixture at 820°C for 2 hours. The structure and properties of the graphene films before and after hydrogenation were characterized. Raman spectroscopy was employed to probe the defect-related bands and C-H bonding. X-ray diffraction provided insights into the crystalline structure and interlayer spacing. The ferromagnetic response was measured using a PPMS system across a range of temperatures and magnetic fields. XPS was used to assess the chemical composition and bonding. This multi-step process enabled a detailed evaluation of the novel synthesis protocol and its effects on the resulting hydrogenated graphene material.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667056924000415/pdfft?md5=f0c52cad96fc046310457d1ccb58b371&pid=1-s2.0-S2667056924000415-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140914455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Activated carbon synthesized from Jack wood biochar for high performing biomass derived composite double layer supercapacitors 利用杰克木生物炭合成活性炭,用于高性能生物质衍生复合双层超级电容器
Carbon Trends Pub Date : 2024-05-01 DOI: 10.1016/j.cartre.2024.100359
T.M.W.J. Bandara , A.M.B.S. Alahakoon , B.-E. Mellander , I. Albinsson
{"title":"Activated carbon synthesized from Jack wood biochar for high performing biomass derived composite double layer supercapacitors","authors":"T.M.W.J. Bandara ,&nbsp;A.M.B.S. Alahakoon ,&nbsp;B.-E. Mellander ,&nbsp;I. Albinsson","doi":"10.1016/j.cartre.2024.100359","DOIUrl":"https://doi.org/10.1016/j.cartre.2024.100359","url":null,"abstract":"<div><p>In this study, the electrochemical properties of bioderived activated carbon-based electrodes for supercapacitors formed using a sintered ceramic binder were investigated. Activated carbon derived from Jack wood tree (<em>Artocarpus heterophyllus</em>) with variable amounts of TiO<sub>2</sub> nanoparticles as a binder, were used as electrodes in order to get good, activated carbon films on FTO substrates. No other binders were used in this study since most conventional binders devastate the electrical conductivity in the films. Furthermore, TiO<sub>2</sub> has higher temperature tolerance compared to polymeric binders thus the electrode prepared can be used in wider applications. A series of electrochemical double-layer capacitors were fabricated and characterized by cyclic voltammetry and galvanostatic charge-discharge measurements. The supercapacitors prepared showed double-layer capacitive behavior. The electrodes that contain 90 % activated carbon and 10 % TiO<sub>2</sub> show optimum performance along with an impressive specific capacitance of 147 F g<sup>−1</sup> at 2 mV s<sup>−1</sup> scan rate. This supercapacitor exhibits a power density of 68.5 W kg<sup>−1</sup> while the energy density is 8.02 Wh kg<sup>−1</sup>. When the power density is as high as 1186.51 W kg<sup>−1</sup> the energy density drops to 5.71 Wh kg<sup>−1</sup>. According to cyclic voltammetry measurements taken for 1000 cycles, the supercapacitor shows excellent cycle stability without any traces of capacitance drop.</p></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667056924000403/pdfft?md5=087abb28222a21382885b36f98cb089e&pid=1-s2.0-S2667056924000403-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical evaluation of hybrid La2CoCrO6/Co3O4/rGO composite for enhanced supercapacitor performance 用于增强超级电容器性能的混合 La2CoCrO6/Co3O4/rGO 复合材料的电化学评估
Carbon Trends Pub Date : 2024-04-26 DOI: 10.1016/j.cartre.2024.100358
Deeksha Nagpal , Anup Singh , Ajay Vasishth , Ranbir Singh , Ashok Kumar
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