New Carbon Materials最新文献

{"title":"The relationship between the high-frequency performance of supercapacitors and the type of doped nitrogen in the carbon electrode","authors":"","doi":"10.1016/S1872-5805(24)60849-8","DOIUrl":"10.1016/S1872-5805(24)60849-8","url":null,"abstract":"<div><div>Nitrogen doping has been widely used to improve the performance of carbon electrodes in supercapacitors, particularly in terms of their high-frequency response. However, the charge storage and electrolyte ion response mechanisms of different nitrogen dopants at high frequencies are still unclear. In this study, melamine foam carbons with different configurations of surface-doped N were formed by gradient carbonization, and the effects of the configurations on the high-frequency response behavior of the supercapacitors were analyzed. Using a combination of experiments and first-principle calculations, we found that pyrrolic N, characterized by a higher adsorption energy, increases the charge storage capacity of the electrode at high frequencies. On the other hand, graphitic N, with a lower adsorption energy, increases the speed of ion response. We propose the use of adsorption energy as a practical descriptor for electrode/electrolyte design in high-frequency applications, offering a more universal approach for improving the performance of N-doped carbon materials in supercapacitors</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533729","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}

{"title":"The preparation and properties of N-doped carbon materials and their use for sodium storage","authors":"","doi":"10.1016/S1872-5805(24)60877-2","DOIUrl":"10.1016/S1872-5805(24)60877-2","url":null,"abstract":"<div><div>Defect engineering by heteroatom doping gives carbon materials some new characteristics such as a different electronic structure and a high electrochemical activity, making them suitable for high-performance applications. N-doping has been widely investigated because of its similar atom radius to carbon, high electronegativity as well as many different configurations. We summarize the preparation methods and properties of N-doped carbon materials, and discuss their possible use in sodium ion storage. The relationships between N content/configuration and crystallinity, electronic conductivity, wettability, chemical reactivity as well as sodium ion storage performance are discussed.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534404","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}

{"title":"Recent advances in producing hollow carbon spheres for use in sodium−sulfur and potassium−sulfur batteries","authors":"","doi":"10.1016/S1872-5805(24)60879-6","DOIUrl":"10.1016/S1872-5805(24)60879-6","url":null,"abstract":"<div><div>Sodium-sulfur (Na-S) and potassium-sulfur (K-S) batteries for use at room temperature have received widespread attention because of the abundance and low cost of their raw materials and their high energy density. However, their development is restricted by the shuttling of polysulfides, large volume expansion and poor conductivity. To overcome these obstacles, an effective approach is to use carbon-based materials with abundant space for the sulfur that has sulfiphilic sites to immobilize it, and a high electrical conductivity. Hollow carbon spheres (HCSs) with a controllable structure and composition are promising for this purpose. We consider recent progress in optimizing the electrochemical performance of Na-/K-S batteries by using these materials. First, the advantages of HCSs, their synthesis methods, and strategies for preparing HCSs/sulfur composite materials are reviewed. Second, the use of HCSs in Na-/K-S batteries, along with mechanisms underlying the resulting performance improvement, are discussed. Finally, prospects for the further development of HCSs for metal−S batteries are presented.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533720","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}

{"title":"Preparation of highly graphitized porous carbon and its ethane/ethylene separation performance","authors":"","doi":"10.1016/S1872-5805(24)60859-0","DOIUrl":"10.1016/S1872-5805(24)60859-0","url":null,"abstract":"<div><div>The efficient separation of ethane (C₂H₆) and ethylene (C₂H₄) is crucial for the preparation of polymer-grade C₂H₄, necessitating the development of highly selective and stable C₂H₆/C₂H₄ adsorbents. Highly graphitized porous carbon, denoted GC-800, was synthesized by polymerization at room temperature followed by carbonization at 800 °C using phenolic resin as the precursor and FeCl₃ as the iron source. Vienna Ab-initio Simulation Package (VASP) calculations confirmed a higher binding energy between C₂H₆ molecules and graphitized porous carbon surfaces, so that a high degree of graphitization increased the adsorption capacity of porous carbon for C₂H₆. However, catalytic graphitization using Fe at high temperatures disrupted the microporous structure of the carbon, thereby reducing its ability to separate C₂H₆/C₂H₄. By controlling the carbonization temperature, the degree of graphitization and pore structure of the porous carbon could be changed. Raman spectra and XPS spectra showed that the GC-800 had a high degree of graphitization, with a sp² C content as high as 73%. Low-temperature N₂ physical adsorption measurements estimated the specific surface area of GC-800 to be as high as 574 m²·g⁻¹. At 298 K and 1 bar, it had an equilibrium adsorption capacity of 2.16 mmol·g⁻¹ for C₂H₆, with the C₂H₆/C₂H₄ (1:1 and 1:9, <em>v</em>/<em>v</em>) ideal adsorbed solution theory selectivity respectively reaching 2.4 and 3.8, significantly higher than the values of most reported high-performance C₂H₆ selective adsorbents. Dynamic breakthrough experiments showed that GC-800 could produce high-purity C₂H₄ in a single step from a mixture of C₂H₆ and C₂H₄. Dynamic cycling tests confirmed its good cyclic stability, and that it could efficiently separate C₂H₆/C₂H₄ even under humid conditions.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533730","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}

{"title":"Porous silicon/carbon composites as anodes for high-performance lithium-ion batteries","authors":"","doi":"10.1016/S1872-5805(24)60850-4","DOIUrl":"10.1016/S1872-5805(24)60850-4","url":null,"abstract":"<div><div>Silicon anodes are promising for use in lithium-ion batteries. However, their practical application is severely limited by their large volume expansion leading to irreversible material fracture and electrical disconnects. This study proposes a new top-down strategy for preparing microsize porous silicon and introduces polyacrylonitrile (PAN) for a nitrogen-doped carbon coating, which is designed to maintain the internal pore volume and lower the expansion of the anode during lithiation and delithiation. We then explore the effect of temperature on the evolution of the structure of PAN and the electrochemical behavior of the composite electrode. After treatment at 400 -, the PAN coating retains a high nitrogen content of 11.35%, confirming the presence of C―N and C―O bonds that improve the ionic-electronic transport properties. This treatment not only results in a more intact carbon layer structure, but also introduces carbon defects, and produces a material that has remarkable stable cycling even at high rates. When cycled at 4 A g⁻¹, the anode had a specific capacity of 857.6 mAh g⁻¹ even after 200 cycles, demonstrating great potential for high-capacity energy storage applications.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533727","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}

{"title":"Progress and challenges in the use of carbon anodes for high-energy and fast-charging sodium-ion batteries","authors":"","doi":"10.1016/S1872-5805(24)60870-X","DOIUrl":"10.1016/S1872-5805(24)60870-X","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs) are widely recognized as most promising candidates for the next generation of low-cost and high-efficiency energy storage systems. Disordered carbons are the most practical anode materials for SIBs, because of their high reversibility of sodium storage and low sodium intercalation potential. However, current disordered carbon anodes face challenges in the incompatibility of their high plateau capacity and high safety operating voltages, as well as sluggish kinetics of sodium storage, leading to trade-offs in energy density, fast-charging performance, and safety characteristics which severely limit their commercialization. This review focuses on the key factors that restrict the development of carbon anodes in SIBs and analyzes the kinetic behavior of each step in the plateau sodium storage process. The progress in building high-energy and fast-charging SIBs is reviewed from two perspectives: the electrode-electrolyte interface and the microstructural control of the disordered carbon. Critical factors influencing the kinetics of sodium storage and the plateau potential are discussed. Finally, prospects for the development of practical carbon anode materials for SIBs are considered.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534402","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}

{"title":"The effect of the carbon components on the performance of carbon-based transition metal electrocatalysts for the hydrogen evolution reaction","authors":"","doi":"10.1016/S1872-5805(24)60880-2","DOIUrl":"10.1016/S1872-5805(24)60880-2","url":null,"abstract":"<div><div>The hydrogen evolution reaction (HER) is a promising way to produce hydrogen, and the use of non-precious metals with an excellent electrochemical performance is vital for this. Carbon-based transition metal catalysts have high activity and stability, which are important in reducing the cost of hydrogen production and promoting the development of the hydrogen production industry. However, there is a lack of discussion regarding the effect of carbon components on the performance of these electrocatalysts. This review of the literature discusses the choice of the carbon components in these catalysts and their impact on catalytic performance, including electronic structure control by heteroatom doping, morphology adjustment, and the influence of self-supporting materials. It not only analyzes the progress in HER, but also provides guidance for synthesizing high-performance carbon-based transition metal catalysts.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533725","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}

{"title":"Design, progress and challenges of 3D carbon-based thermally conductive networks","authors":"","doi":"10.1016/S1872-5805(24)60887-5","DOIUrl":"10.1016/S1872-5805(24)60887-5","url":null,"abstract":"<div><div>The advent of the 5G era has stimulated the rapid development of high power electronics with dense integration. Three-dimensional (3D) thermally conductive networks, possessing high thermal and electrical conductivities and many different structures, are regarded as key materials to improve the performance of electronic devices. We provide a critical overview of carbon-based 3D thermally conductive networks, emphasizing their preparation-structure-property relationships and their applications in different scenarios. A detailed discussion of the microscopic principles of thermal conductivity is provided, which is crucial for increasing it. This is followed by an in-depth account of the construction of 3D networks using different carbon materials, such as graphene, carbon foam, and carbon nanotubes. Techniques for the assembly of two-dimensional graphene into 3D networks and their effects on thermal conductivity are emphasized. Finally, the existing challenges and future prospects for 3D carbon-based thermally conductive networks are discussed.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533721","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}

{"title":"The potassium storage performance of carbon nanosheets derived from heavy oils","authors":"","doi":"10.1016/S1872-5805(24)60875-9","DOIUrl":"10.1016/S1872-5805(24)60875-9","url":null,"abstract":"<div><div>As by-products of petroleum refining, heavy oils are characterized by a high carbon content, low cost and great variability, making them competitive precursors for the anodes of potassium ion batteries (PIBs). However, the relationship between heavy oil composition and potassium storage performance remains unclear. Using heavy oils containing distinct chemical groups as the carbon source, namely fluid catalytic cracking slurry (FCCS), petroleum asphalt (PA) and deoiled asphalt (DOA), three carbon nanosheets (CNS) were prepared through a molten salt method, and used as the anodes for PIBs. The composition of the heavy oil determines the lamellar thicknesses, sp³-C/sp²-C ratio and defect concentration, thereby affecting the potassium storage performance. The high content of aromatic hydrocarbons and moderate amount of heavy component moieties in FCCS produce carbon nanosheets (CNS-FCCS) that have a smaller layer thickness, larger interlayer spacing (0.372 nm), and increased number of folds than in CNS derived from the other three precursors. These features give it faster charge/ion transfer, more potassium storage sites and better reaction kinetics. CNS-FCCS has a remarkable K⁺ storage capacity (248.7 mAh g⁻¹ after 100 cycles at 0.1 A g⁻¹), long cycle lifespan (190.8 mAh g⁻¹ after 800 cycles at 1.0 A g⁻¹) and excellent rate capability, ranking it among the best materials for this application. This work sheds light on the influence of heavy oil composition on carbon structure and electrochemical performance, and provides guidance for the design and development of advanced heavy oil-derived carbon electrodes for PIBs.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533728","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}

{"title":"A review of hard carbon anodes for rechargeable sodium-ion batteries","authors":"","doi":"10.1016/S1872-5805(24)60884-X","DOIUrl":"10.1016/S1872-5805(24)60884-X","url":null,"abstract":"<div><div>Hard carbons (HCs) are recognized as potential anode materials for sodium-ion batteries (SIBs) because of their low cost, environmental friendliness, and the abundance of their precursors. The presence of graphitic domains, numerous pores, and disordered carbon layers in HCs plays a significant role in determining their sodium storage ability, but these structural features depend on the precursor used. The influence of functional groups, including heteroatoms and oxygen-containing groups, and the microstructure of the precursor on the physical and electrochemical properties of the HC produced are evaluated, and the effects of carbonization conditions (carbonization temperature, heating rate and atmosphere) are also discussed.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533719","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}