Pub Date : 2025-06-01DOI: 10.1016/S1872-5805(25)60980-2
Ao SUN , Nuo XU , Yue-fan WANG , Jia-qi XU , Zi-zheng SHI , Xiao ZHANG
The use of carbon nanotube fibers (CNTFs), which are macroscopic assemblies of billions of carbon nanotubes (CNTs), has long been limited by their disordered and loose microstructures. As a result, their mechanical properties are several orders of magnitude lower than those of single CNTs. In recent years, with the innovation in CNTF preparation techniques, not only has continuous mass production at the industrial level been achieved, but the cost has also significantly decreased to levels close to those of high-performance commercial fibers due to the economies of scale. High performance CNTFs have been developed that have a high strength, moderate to high modulus, high electrical conductivity, high thermal conductivity, high flexibility, and low density. These advanced CNTFs have not only surpassed the characteristic properties of benchmark commercial fibers but have also been widely explored for use in structural materials for aerospace, conductive cables, and novel mechanical energy harvesting. During the last decade there has been significant improvements in CNTF preparation techniques, post-synthesis treatment and its mechanisms, understanding the failure mechanisms of structures developed from them, and many new applications have been explored. The review attempts to understand the key problems in transferring properties from the nanoscale to the macroscale and discusses feasible ways to approach the superior properties of CNTs in order to widen the future applications of CNTFs.
{"title":"High strength carbon nanotube fibers: synthesis development, property improvement and possible applications","authors":"Ao SUN , Nuo XU , Yue-fan WANG , Jia-qi XU , Zi-zheng SHI , Xiao ZHANG","doi":"10.1016/S1872-5805(25)60980-2","DOIUrl":"10.1016/S1872-5805(25)60980-2","url":null,"abstract":"<div><div>The use of carbon nanotube fibers (CNTFs), which are macroscopic assemblies of billions of carbon nanotubes (CNTs), has long been limited by their disordered and loose microstructures. As a result, their mechanical properties are several orders of magnitude lower than those of single CNTs. In recent years, with the innovation in CNTF preparation techniques, not only has continuous mass production at the industrial level been achieved, but the cost has also significantly decreased to levels close to those of high-performance commercial fibers due to the economies of scale. High performance CNTFs have been developed that have a high strength, moderate to high modulus, high electrical conductivity, high thermal conductivity, high flexibility, and low density. These advanced CNTFs have not only surpassed the characteristic properties of benchmark commercial fibers but have also been widely explored for use in structural materials for aerospace, conductive cables, and novel mechanical energy harvesting. During the last decade there has been significant improvements in CNTF preparation techniques, post-synthesis treatment and its mechanisms, understanding the failure mechanisms of structures developed from them, and many new applications have been explored. The review attempts to understand the key problems in transferring properties from the nanoscale to the macroscale and discusses feasible ways to approach the superior properties of CNTs in order to widen the future applications of CNTFs.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (89KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 3","pages":"Pages 621-641"},"PeriodicalIF":5.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501879","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}
Pub Date : 2025-06-01DOI: 10.1016/S1872-5805(25)60987-5
Ya KONG , Shi-peng ZHANG , Yu-ling YIN , Zi-xuan ZHANG , Xue-ting FENG , Feng DING , Jin ZHANG , Lian-ming TONG , Xin GAO
Graphdiyne (GDY) is a two-dimensional carbon allotrope with exceptional physical and chemical properties that is gaining increasing attention. However, its efficient and scalable synthesis remains a significant challenge. We present a microwave-assisted approach for its continuous, large-scale production which enables synthesis at a rate of 0.6 g/h, with a yield of up to 90%. The synthesized GDY nanosheets have an average diameter of 246 nm and a thickness of 4 nm. We used GDY as a stable coating for potassium (K) metal anodes (K@GDY), taking advantage of its unique molecular structure to provide favorable paths for K-ion transport. This modification significantly inhibited dendrite formation and improved the cycling stability of K metal batteries. Full-cells with perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) cathodes showed the clear superiority of the K@GDY anodes over bare K anodes in terms of performance, stability, and cycle life. The K@GDY maintained a stable voltage plateau and gave an excellent capacity retention after 600 cycles with nearly 100% Coulombic efficiency. This work not only provides a scalable and efficient way for GDY synthesis but also opens new possibilities for its use in energy storage and other advanced technologies.
{"title":"Microwave-enabled rapid, continuous, and substrate-free synthesis of few-layer graphdiyne nanosheets for enhanced potassium metal battery performance","authors":"Ya KONG , Shi-peng ZHANG , Yu-ling YIN , Zi-xuan ZHANG , Xue-ting FENG , Feng DING , Jin ZHANG , Lian-ming TONG , Xin GAO","doi":"10.1016/S1872-5805(25)60987-5","DOIUrl":"10.1016/S1872-5805(25)60987-5","url":null,"abstract":"<div><div>Graphdiyne (GDY) is a two-dimensional carbon allotrope with exceptional physical and chemical properties that is gaining increasing attention. However, its efficient and scalable synthesis remains a significant challenge. We present a microwave-assisted approach for its continuous, large-scale production which enables synthesis at a rate of 0.6 g/h, with a yield of up to 90%. The synthesized GDY nanosheets have an average diameter of 246 nm and a thickness of 4 nm. We used GDY as a stable coating for potassium (K) metal anodes (K@GDY), taking advantage of its unique molecular structure to provide favorable paths for K-ion transport. This modification significantly inhibited dendrite formation and improved the cycling stability of K metal batteries. Full-cells with perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) cathodes showed the clear superiority of the K@GDY anodes over bare K anodes in terms of performance, stability, and cycle life. The K@GDY maintained a stable voltage plateau and gave an excellent capacity retention after 600 cycles with nearly 100% Coulombic efficiency. This work not only provides a scalable and efficient way for GDY synthesis but also opens new possibilities for its use in energy storage and other advanced technologies.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (156KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 3","pages":"Pages 642-650"},"PeriodicalIF":5.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501880","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}
Pub Date : 2025-06-01DOI: 10.1016/S1872-5805(25)60992-9
Yong-fang ZHU , Xiao-dong JI , Wen-kai PAN , Geng WU , Peng LI , Bo LIU , Da-ping HE
Because of their low electrical conductivity, sluggish ion diffusion, and poor stability, conventional electrode materials are not able to meet the growing demands of energy storage and portable devices. Graphene assembled films (GAFs) formed from graphene nanosheets have an ultrahigh conductivity, a unique 2D network structure, and exceptional mechanical strength, which give them the potential to solve these problems. However, a systematic understanding of GAFs as an advanced electrode material is lacking. This review focuses on the use of GAFs in electrochemistry, providing a comprehensive analysis of their synthesis methods, surface/structural characteristics, and physical properties, and thus understand their structure-property relationships. Their advantages in batteries, supercapacitors, and electrochemical sensors are systematically evaluated, with an emphasis on their excellent electrical conductivity, ion transport kinetics, and interfacial stability. The existing problems in these devices, such as chemical inertness and mechanical brittleness, are discussed and potential solutions are proposed, including defect engineering and hybrid structures. This review should deepen our mechanistic understanding of the use of GAFs in electrochemical systems and provide actionable strategies for developing stable, high-performance electrode materials.
{"title":"A review of graphene assembled films as platforms for electrochemical reactions","authors":"Yong-fang ZHU , Xiao-dong JI , Wen-kai PAN , Geng WU , Peng LI , Bo LIU , Da-ping HE","doi":"10.1016/S1872-5805(25)60992-9","DOIUrl":"10.1016/S1872-5805(25)60992-9","url":null,"abstract":"<div><div>Because of their low electrical conductivity, sluggish ion diffusion, and poor stability, conventional electrode materials are not able to meet the growing demands of energy storage and portable devices. Graphene assembled films (GAFs) formed from graphene nanosheets have an ultrahigh conductivity, a unique 2D network structure, and exceptional mechanical strength, which give them the potential to solve these problems. However, a systematic understanding of GAFs as an advanced electrode material is lacking. This review focuses on the use of GAFs in electrochemistry, providing a comprehensive analysis of their synthesis methods, surface/structural characteristics, and physical properties, and thus understand their structure-property relationships. Their advantages in batteries, supercapacitors, and electrochemical sensors are systematically evaluated, with an emphasis on their excellent electrical conductivity, ion transport kinetics, and interfacial stability. The existing problems in these devices, such as chemical inertness and mechanical brittleness, are discussed and potential solutions are proposed, including defect engineering and hybrid structures. This review should deepen our mechanistic understanding of the use of GAFs in electrochemical systems and provide actionable strategies for developing stable, high-performance electrode materials.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (117KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 3","pages":"Pages 519-538"},"PeriodicalIF":5.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502029","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}
Pub Date : 2025-06-01DOI: 10.1016/S1872-5805(25)60994-2
Chang-lin HE , Zhi-chao SHANG , Wei-guang WANG , Xiang-ming LI , Kun WANG , Yue-xing CHEN , Xin-tan BAI , Pei-pei WANG , Xiang JI , Xuan-ru REN , A Levashov Evgeny , Kiryukhantsev-Korneev Ph V , Pei-zhong FENG
To improve the oxidation resistance of HfB2-SiC coatings on carbon/carbon composites at 1700 °C in air, CeO2 was introduced to improve oxygen blocking and its mechanism was investigated. During the rapid oxidation stage, CeO2 accelerated the formation of a multiphase glass layer on the coating surface. The maximum oxidation rates of CeO2-HfB2-SiC coatings with 1%, 3%, and 5% CeO2 were 24.1%, 20.3%, and 53.2% higher than that of the unmodified HfB2-SiC coating, respectively. In the stable oxidation stage, the maximum oxidation rates of coatings with 1% and 3% CeO2 decreased by 31.4% and 21.9%, respectively, demonstrating adequate inert protection. CeO2 is a “coagulant” and “stabilizer” in the composite glass layer. However, increasing the CeO2 content accelerates the reaction between the SiO2 glass phase and SiC, leading to a higher SiO2 consumption and reduced self-healing ability of the glass layer. The 1% CeO2-60% HfB2-39%SiC coating showed improved glass layer viscosity and stability, moderate SiO2 consumption, and better self-healing ability, significantly boosting the oxidation protection of the coating.
{"title":"Improving the oxidation resistance of HfB2-SiC coatings on carbon/carbon composites by CeO2 doping","authors":"Chang-lin HE , Zhi-chao SHANG , Wei-guang WANG , Xiang-ming LI , Kun WANG , Yue-xing CHEN , Xin-tan BAI , Pei-pei WANG , Xiang JI , Xuan-ru REN , A Levashov Evgeny , Kiryukhantsev-Korneev Ph V , Pei-zhong FENG","doi":"10.1016/S1872-5805(25)60994-2","DOIUrl":"10.1016/S1872-5805(25)60994-2","url":null,"abstract":"<div><div>To improve the oxidation resistance of HfB<sub>2</sub>-SiC coatings on carbon/carbon composites at 1700 °C in air, CeO<sub>2</sub> was introduced to improve oxygen blocking and its mechanism was investigated. During the rapid oxidation stage, CeO<sub>2</sub> accelerated the formation of a multiphase glass layer on the coating surface. The maximum oxidation rates of CeO<sub>2</sub>-HfB<sub>2</sub>-SiC coatings with 1%, 3%, and 5% CeO<sub>2</sub> were 24.1%, 20.3%, and 53.2% higher than that of the unmodified HfB<sub>2</sub>-SiC coating, respectively. In the stable oxidation stage, the maximum oxidation rates of coatings with 1% and 3% CeO<sub>2</sub> decreased by 31.4% and 21.9%, respectively, demonstrating adequate inert protection. CeO<sub>2</sub> is a “coagulant” and “stabilizer” in the composite glass layer. However, increasing the CeO<sub>2</sub> content accelerates the reaction between the SiO<sub>2</sub> glass phase and SiC, leading to a higher SiO<sub>2</sub> consumption and reduced self-healing ability of the glass layer. The 1% CeO<sub>2</sub>-60% HfB<sub>2</sub>-39%SiC coating showed improved glass layer viscosity and stability, moderate SiO<sub>2</sub> consumption, and better self-healing ability, significantly boosting the oxidation protection of the coating.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (106KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 3","pages":"Pages 688-701"},"PeriodicalIF":5.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501884","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}
Pub Date : 2025-06-01DOI: 10.1016/S1872-5805(25)60990-5
Hui-jun LI , Qing ZHANG , Kun HUANG , Song-feng PEI , Wen-cai REN
With the miniaturization and high integration of electronic devices, problems such as heat accumulation and non-uniform temperature distribution during operation have significantly compromised the reliability and stability of electronic systems, thereby hindering the advance of electronic technology. Because of the exceptionally high in-plane thermal conductivity of graphene, its films can effectively spread heat from localized hotspots to a larger heat dissipation area, thereby increasing the heat dissipation and reducing the operating temperatures of the device. As a result, such films are critical materials for thermal management in electronic equipment. This review systematically examines the relationship between their structure and thermal conductivity, outlines their main fabrication methods, explores the mechanisms for controlling defects in them using different precursors, formation processes, and heat treatments, and summarizes existing research aimed at improving their thermal conductivity. Finally, the problems associated with these films and their future development are discussed.
{"title":"A review of thermally conductive graphene-based films","authors":"Hui-jun LI , Qing ZHANG , Kun HUANG , Song-feng PEI , Wen-cai REN","doi":"10.1016/S1872-5805(25)60990-5","DOIUrl":"10.1016/S1872-5805(25)60990-5","url":null,"abstract":"<div><div>With the miniaturization and high integration of electronic devices, problems such as heat accumulation and non-uniform temperature distribution during operation have significantly compromised the reliability and stability of electronic systems, thereby hindering the advance of electronic technology. Because of the exceptionally high in-plane thermal conductivity of graphene, its films can effectively spread heat from localized hotspots to a larger heat dissipation area, thereby increasing the heat dissipation and reducing the operating temperatures of the device. As a result, such films are critical materials for thermal management in electronic equipment. This review systematically examines the relationship between their structure and thermal conductivity, outlines their main fabrication methods, explores the mechanisms for controlling defects in them using different precursors, formation processes, and heat treatments, and summarizes existing research aimed at improving their thermal conductivity. Finally, the problems associated with these films and their future development are discussed.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (96KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 3","pages":"Pages 540-552"},"PeriodicalIF":5.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502030","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}
The ecological and environmental issues caused by CO2 emissions are becoming increasingly severe. Adsorption separation is recognized as one of the effective approaches for CO2 capture, with activated carbon serving as a widely used adsorbent. As high-quality coal resources for activated carbon production are gradually being depleted, the use of bamboo, anabundant resource in China, as a raw material for activated carbon has become a rational alternative. This paper reviews the mechanisms influencing the CO2 adsorption performance of activated carbon, such as pore structure and surface chemistry, and thoroughly explores the relationship between its composition, structure, and CO2 adsorption performance. It focuses on the important process aspects of pore regulation, surface modification strategies, and molding techniques for bamboo-based activated carbon, summarizing research progress in the preparation and modification methods of bamboo-based activated carbon for CO2 adsorption. Technical challenges in its current production are evaluated and future development directions are proposed, aim-ing to provide technical insights for promoting the use of bamboo-based activated carbon for CO2 capture.
{"title":"Research progress on the preparation of bamboo-based activated carbon for CO2 adsorption","authors":"Bing-jie Wang, Qiang Xie, Yu-tong Sha, Jin-chang Liu, Ding-cheng Liang","doi":"10.1016/S1872-5805(25)60956-5","DOIUrl":"10.1016/S1872-5805(25)60956-5","url":null,"abstract":"<div><div>The ecological and environmental issues caused by CO<sub>2</sub> emissions are becoming increasingly severe. Adsorption separation is recognized as one of the effective approaches for CO<sub>2</sub> capture, with activated carbon serving as a widely used adsorbent. As high-quality coal resources for activated carbon production are gradually being depleted, the use of bamboo, anabundant resource in China, as a raw material for activated carbon has become a rational alternative. This paper reviews the mechanisms influencing the CO<sub>2</sub> adsorption performance of activated carbon, such as pore structure and surface chemistry, and thoroughly explores the relationship between its composition, structure, and CO<sub>2</sub> adsorption performance. It focuses on the important process aspects of pore regulation, surface modification strategies, and molding techniques for bamboo-based activated carbon, summarizing research progress in the preparation and modification methods of bamboo-based activated carbon for CO<sub>2</sub> adsorption. Technical challenges in its current production are evaluated and future development directions are proposed, aim-ing to provide technical insights for promoting the use of bamboo-based activated carbon for CO<sub>2</sub> capture.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (92KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 2","pages":"Pages 317-332"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887618","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}
Electrospinning technology has emerged as a promising method for fabricating flexible lithium-ion batteries (FLIBs) due to its ability to create materials with desirable properties for energy storage applications. FLIBs, which are foldable and have high energy densities, are becoming increasingly important as power sources for wearable devices, flexible electronics, and mobile energy applications. Carbon materials, especially carbon nanofibers, are pivotal in improving the performance of FLIBs by increasing electrical conductivity, chemical stability, and surface area, as well as reducing costs. These materials also play a significant role in establishing conducting networks and improving structural integrity, which are essential for extending the cycle life and enhancing the safety of the batteries. This review considers the role of electrospinning in the fabrication of critical FLIB components, with a particular emphasis on the integration of carbon materials. It explores strategies to optimize FLIB performance by fine-tuning the electrospinning parameters, such as electric field strength, spinning rate, solution concentration, and carbonization process. Precise control over fiber properties is crucial for enhancing battery reliability and stability during folding and bending. It also highlights the latest research findings in carbon-based electrode materials, high-performance electrolytes, and separator structures, discussing the practical challenges and opportunities these materials present. It underscores the significant impact of carbon materials on the evolution of FLIBs and their potential to shape future energy storage technologies.
{"title":"A review of the use of electrospinning in the preparation of flexible lithium-ion batteries","authors":"Jia-yi XING , Yu-zhuo ZHANG , Shu-xin FENG , Ke-meng JI","doi":"10.1016/S1872-5805(25)60962-0","DOIUrl":"10.1016/S1872-5805(25)60962-0","url":null,"abstract":"<div><div>Electrospinning technology has emerged as a promising method for fabricating flexible lithium-ion batteries (FLIBs) due to its ability to create materials with desirable properties for energy storage applications. FLIBs, which are foldable and have high energy densities, are becoming increasingly important as power sources for wearable devices, flexible electronics, and mobile energy applications. Carbon materials, especially carbon nanofibers, are pivotal in improving the performance of FLIBs by increasing electrical conductivity, chemical stability, and surface area, as well as reducing costs. These materials also play a significant role in establishing conducting networks and improving structural integrity, which are essential for extending the cycle life and enhancing the safety of the batteries. This review considers the role of electrospinning in the fabrication of critical FLIB components, with a particular emphasis on the integration of carbon materials. It explores strategies to optimize FLIB performance by fine-tuning the electrospinning parameters, such as electric field strength, spinning rate, solution concentration, and carbonization process. Precise control over fiber properties is crucial for enhancing battery reliability and stability during folding and bending. It also highlights the latest research findings in carbon-based electrode materials, high-performance electrolytes, and separator structures, discussing the practical challenges and opportunities these materials present. It underscores the significant impact of carbon materials on the evolution of FLIBs and their potential to shape future energy storage technologies.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (127KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 2","pages":"Pages 270-291"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887621","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}
Pub Date : 2025-04-01DOI: 10.1016/S1872-5805(25)60967-X
Ning-Jing SONG , Can-liang MA , Nan-nan GUO , Yun ZHAO , Wan-xi LI , Bo-qiong LI
Biomass-derived hard carbons, usually prepared by pyrolysis, are widely considered the most promising anode materials for sodium-ion batteries (SIBs) due to their high capacity, low potential, sustainability, cost-effectiveness, and environmental friendliness. The pyrolysis method affects the microstructure of the material, and ultimately its sodium storage performance. Our previous work has shown that pyrolysis in a sealed graphite vessel improved the sodium storage performance of the carbon, however the changes in its microstructure and the way this influences the sodium storage are still unclear. A series of hard carbon materials derived from corncobs (CCG-T, where T is the pyrolysis temperature) were pyrolyzed in a sealed graphite vessel at different temperatures. As the pyrolysis temperature increased from 1000 to 1400 °C small carbon domains gradually transformed into long and curved domains. At the same time, a greater number of large open pores with uniform apertures, as well as more closed pores, were formed. With the further increase of pyrolysis temperature to 1600 °C, the long and curved domains became longer and straighter, and some closed pores gradually became open. CCG-1400, with abundant closed pores, had a superior SIB performance, with an initial reversible capacity of 320.73 mAh g−1 at a current density of 30 mA g−1, an initial Coulomb efficiency (ICE) of 84.34%, and a capacity retention of 96.70% after 100 cycles. This study provides a method for the precise regulation of the microcrystalline and pore structures of hard carbon materials.
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生物质衍生的硬碳通常通过热解制备，由于其高容量、低潜力、可持续性、成本效益和环境友好性而被广泛认为是最有前途的钠离子电池（sib）阳极材料。热解方式影响材料的微观结构，最终影响其储钠性能。我们之前的工作表明，在密封石墨容器中热解提高了碳的钠储存性能，但其微观结构的变化及其影响钠储存的方式仍不清楚。在不同温度下，在密封的石墨容器中热解一系列从玉米芯中提取的硬碳材料（CCG-T， T为热解温度）。随着热解温度从1000℃升高到1400℃，小碳畴逐渐转变为长而弯曲的碳畴。同时，形成了更多的孔径均匀的大开孔和更多的闭孔。随着热解温度进一步升高至1600℃，长弯曲畴变长变直，部分封闭孔隙逐渐开放。CCG-1400具有良好的SIB性能，在电流密度为30 mA g−1时，其初始可逆容量为320.73 mAh g−1，初始库仑效率（ICE）为84.34%，循环100次后容量保持率为96.70%。本研究为精确调控硬碳材料的微晶结构和孔隙结构提供了一种方法。下载：下载高清图片（100KB）下载：下载全尺寸图片
{"title":"Tailoring the pore structure of hard carbon for enhanced sodium-ion battery anodes","authors":"Ning-Jing SONG , Can-liang MA , Nan-nan GUO , Yun ZHAO , Wan-xi LI , Bo-qiong LI","doi":"10.1016/S1872-5805(25)60967-X","DOIUrl":"10.1016/S1872-5805(25)60967-X","url":null,"abstract":"<div><div>Biomass-derived hard carbons, usually prepared by pyrolysis, are widely considered the most promising anode materials for sodium-ion batteries (SIBs) due to their high capacity, low potential, sustainability, cost-effectiveness, and environmental friendliness. The pyrolysis method affects the microstructure of the material, and ultimately its sodium storage performance. Our previous work has shown that pyrolysis in a sealed graphite vessel improved the sodium storage performance of the carbon, however the changes in its microstructure and the way this influences the sodium storage are still unclear. A series of hard carbon materials derived from corncobs (CCG-<em>T</em>, where <em>T</em> is the pyrolysis temperature) were pyrolyzed in a sealed graphite vessel at different temperatures. As the pyrolysis temperature increased from 1000 to 1400 °C small carbon domains gradually transformed into long and curved domains. At the same time, a greater number of large open pores with uniform apertures, as well as more closed pores, were formed. With the further increase of pyrolysis temperature to 1600 °C, the long and curved domains became longer and straighter, and some closed pores gradually became open. CCG-1400, with abundant closed pores, had a superior SIB performance, with an initial reversible capacity of 320.73 mAh g<sup>−1</sup> at a current density of 30 mA g<sup>−1</sup>, an initial Coulomb efficiency (ICE) of 84.34%, and a capacity retention of 96.70% after 100 cycles. This study provides a method for the precise regulation of the microcrystalline and pore structures of hard carbon materials.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (100KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 2","pages":"Pages 367-380"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887575","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}
Pub Date : 2025-04-01DOI: 10.1016/S1872-5805(25)60960-7
Bei CHENG , Xing-yan XIE , Liu WAN , Jian CHEN , Yan ZHANG , Cheng DU , Xue-feng GUO , Ming-jiang XIE
In order to meet the demands of new-generation electric vehicles that require high power output (over 15 kW/kg), it is crucial to increase the energy density of carbon-based supercapacitors to a level comparable to that of batteries, while maintaining a high power density. We report a porous carbon material produced by immersing poplar wood (PW) sawdust in a solution of KOH and graphene oxide (GO), followed by carbonization. The resulting material has exceptional properties as an electrode for high-energy supercapacitors. Compared to the material prepared by the direct carbonization of PW, its electrical conductivity was increased from 0.36 to 26.3 S/cm. Because of this and a high microporosity of over 80%, which provides fast electron channels and a large ion storage surface, when used as the electrodes for a symmetric supercapacitor, it gave a high energy density of 27.9 Wh/[email protected] kW/kg in an aqueous electrolyte of 1.0 mol/L Na2SO4. The device also had battery-level energy storage with maximum energy densities of 73.9 Wh/[email protected] kW/kg and 67.6 Wh/kg@40 kW/kg, an ultrahigh power density, in an organic electrolyte of 1.0 mol/L TEABF4/AN. These values are comparable to those of 30−45 Wh/kg for Pb-acid batteries and 30−55 Wh/kg for aqueous lithium batteries. This work indicates a way to prepare carbon materials that can be used in supercapacitors with ultrahigh energy and power densities.
{"title":"Controlling the conductivity and microporosity of biocarbon to produce supercapacitors with battery-level energies at an ultrahigh power","authors":"Bei CHENG , Xing-yan XIE , Liu WAN , Jian CHEN , Yan ZHANG , Cheng DU , Xue-feng GUO , Ming-jiang XIE","doi":"10.1016/S1872-5805(25)60960-7","DOIUrl":"10.1016/S1872-5805(25)60960-7","url":null,"abstract":"<div><div>In order to meet the demands of new-generation electric vehicles that require high power output (over 15 kW/kg), it is crucial to increase the energy density of carbon-based supercapacitors to a level comparable to that of batteries, while maintaining a high power density. We report a porous carbon material produced by immersing poplar wood (PW) sawdust in a solution of KOH and graphene oxide (GO), followed by carbonization. The resulting material has exceptional properties as an electrode for high-energy supercapacitors. Compared to the material prepared by the direct carbonization of PW, its electrical conductivity was increased from 0.36 to 26.3 S/cm. Because of this and a high microporosity of over 80%, which provides fast electron channels and a large ion storage surface, when used as the electrodes for a symmetric supercapacitor, it gave a high energy density of 27.9 Wh/[email protected] kW/kg in an aqueous electrolyte of 1.0 mol/L Na<sub>2</sub>SO<sub>4</sub>. The device also had battery-level energy storage with maximum energy densities of 73.9 Wh/[email protected] kW/kg and 67.6 Wh/kg@40 kW/kg, an ultrahigh power density, in an organic electrolyte of 1.0 mol/L TEABF<sub>4</sub>/AN. These values are comparable to those of 30−45 Wh/kg for Pb-acid batteries and 30−55 Wh/kg for aqueous lithium batteries. This work indicates a way to prepare carbon materials that can be used in supercapacitors with ultrahigh energy and power densities.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (106KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 2","pages":"Pages 397-407"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887577","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}
Pub Date : 2025-04-01DOI: 10.1016/S1872-5805(25)60965-6
Sahoo Sumanta , Kumar Rajesh , Soo Han Sung
The rising concern over electromagnetic (EM) pollution is responsible for the rapid progress in EM interference (EMI) shielding and EM wave absorption in the last few years, and carbon materials with a large surface area and high porosity have been investigated. Compared to other carbon materials, biomass-derived carbon (BC) are considered efficient and eco-friendly materials for this purpose. We summarize the recent advances in BC materials for both EMI shielding and EM wave absorption. After a brief overview of the synthesis strategies of BC materials and a precise outline of EM wave interference, strategies for improving their EMI shielding and EM wave absorption are discussed. Finally, the existing challenges and the future prospects for such materials are briefly summarized.
{"title":"Low-value biomass-derived carbon composites for electromagnetic wave absorption and shielding: A review","authors":"Sahoo Sumanta , Kumar Rajesh , Soo Han Sung","doi":"10.1016/S1872-5805(25)60965-6","DOIUrl":"10.1016/S1872-5805(25)60965-6","url":null,"abstract":"<div><div>The rising concern over electromagnetic (EM) pollution is responsible for the rapid progress in EM interference (EMI) shielding and EM wave absorption in the last few years, and carbon materials with a large surface area and high porosity have been investigated. Compared to other carbon materials, biomass-derived carbon (BC) are considered efficient and eco-friendly materials for this purpose. We summarize the recent advances in BC materials for both EMI shielding and EM wave absorption. After a brief overview of the synthesis strategies of BC materials and a precise outline of EM wave interference, strategies for improving their EMI shielding and EM wave absorption are discussed. Finally, the existing challenges and the future prospects for such materials are briefly summarized.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (141KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"40 2","pages":"Pages 293-316"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887622","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}
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