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}
Pub Date : 2025-04-01DOI: 10.1016/S1872-5805(25)60961-9
Su-xia QI , Tao YANG , Yan SONG , Ning ZHAO , Jun-qing LIU , Xiao-dong TIAN , Jin-ru WU , Hui LI , Zhan-jun LIU
Pitch produced by the liquefaction of coal was divided into two fractions: soluble in toluene (TS) and insoluble in toluene but soluble in pyridine (TI-PS), and their differences in molecular structure and oxidation activity were studied. Several different carbon materials were produced from them by oxidation in air (350 °C, 300 mL/min) followed by carbonization (1000 °C in Ar), and the effect of the cross-linked structure on their structure and sodium storage properties was investigated. The results showed that the two pitch fractions were obviously different after the air oxidation. The TS fraction with a low degree of condensation and abundant side chains had a stronger oxidation activity and thus introduced more cross-linked oxygen-containing functional groups C(O)―O which prevented carbon layer rearrangement during the carbonization. As a result, a disordered hard carbon with more defects was formed, which improved the electrochemical performance. Therefore, the carbon materials derived from TS (O-TS-1000) had an obvious disordered structure and a larger layer spacing, giving them better sodium storage performance than those derived from the TI-PS fraction (O-TI-PS-1000). The specific capacity of O-TS-1000 was about 250 mAh/g at 20 mA/g, which was 1.67 times higher than that of O-TI-PS-1000 (150 mAh/g).
{"title":"Impact of pitch fraction oxidation on the structure and sodium storage properties of derived carbon materials","authors":"Su-xia QI , Tao YANG , Yan SONG , Ning ZHAO , Jun-qing LIU , Xiao-dong TIAN , Jin-ru WU , Hui LI , Zhan-jun LIU","doi":"10.1016/S1872-5805(25)60961-9","DOIUrl":"10.1016/S1872-5805(25)60961-9","url":null,"abstract":"<div><div>Pitch produced by the liquefaction of coal was divided into two fractions: soluble in toluene (TS) and insoluble in toluene but soluble in pyridine (TI-PS), and their differences in molecular structure and oxidation activity were studied. Several different carbon materials were produced from them by oxidation in air (350 °C, 300 mL/min) followed by carbonization (1000 °C in Ar), and the effect of the cross-linked structure on their structure and sodium storage properties was investigated. The results showed that the two pitch fractions were obviously different after the air oxidation. The TS fraction with a low degree of condensation and abundant side chains had a stronger oxidation activity and thus introduced more cross-linked oxygen-containing functional groups C(O)―O which prevented carbon layer rearrangement during the carbonization. As a result, a disordered hard carbon with more defects was formed, which improved the electrochemical performance. Therefore, the carbon materials derived from TS (O-TS-1000) had an obvious disordered structure and a larger layer spacing, giving them better sodium storage performance than those derived from the TI-PS fraction (O-TI-PS-1000). The specific capacity of O-TS-1000 was about 250 mAh/g at 20 mA/g, which was 1.67 times higher than that of O-TI-PS-1000 (150 mAh/g).\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (107KB)</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 409-421"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887652","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 rapid development of the information era has led to increased power consumption, which generates more heat. This requires more efficient thermal management systems, with the most direct approach being the development of superior thermal interface materials (TIMs). Mesocarbon microbeads (MCMBs) have several desirable properties for this purpose, including high thermal conductivity and excellent thermal stability. Although their thermal conductivity (K) may not be exceptional among all carbon materials, their ease of production and low cost make them ideal filler materials for developing a new generation of carbon-based TIMs. We report the fabrication of high-performance TIMs by incorporating MCMBs in a polyimide (PI) framework, producing highly graphitized PI/MCMB (PM) foams and anisotropic polydimethylsiloxane/PM (PDMS/PM) composites with a high thermal conductivity using directional freezing and high-temperature thermal annealing. The resulting materials had a high through-plane (TP) K of 15.926 W·m−1·K−1, 4.83 times that of conventional thermally conductive silicone pads and 88.5 times higher than that of pure PDMS. The composites had excellent mechanical properties and thermal stability, meeting the demands of modern electronic products for integration, multi-functionality, and miniaturization.
{"title":"Novel thermal interface materials based on mesocarbon microbeads with a high through-plane thermal conductivity","authors":"Zhi-peng SUN, Cheng MA, Ji-tong WANG, Wen-ming QIAO, Li-cheng LING","doi":"10.1016/S1872-5805(25)60964-4","DOIUrl":"10.1016/S1872-5805(25)60964-4","url":null,"abstract":"<div><div>The rapid development of the information era has led to increased power consumption, which generates more heat. This requires more efficient thermal management systems, with the most direct approach being the development of superior thermal interface materials (TIMs). Mesocarbon microbeads (MCMBs) have several desirable properties for this purpose, including high thermal conductivity and excellent thermal stability. Although their thermal conductivity (<em>K</em>) may not be exceptional among all carbon materials, their ease of production and low cost make them ideal filler materials for developing a new generation of carbon-based TIMs. We report the fabrication of high-performance TIMs by incorporating MCMBs in a polyimide (PI) framework, producing highly graphitized PI/MCMB (PM) foams and anisotropic polydimethylsiloxane/PM (PDMS/PM) composites with a high thermal conductivity using directional freezing and high-temperature thermal annealing. The resulting materials had a high through-plane (TP) <em>K</em> of 15.926 W·m<sup>−1</sup>·K<sup>−1</sup>, 4.83 times that of conventional thermally conductive silicone pads and 88.5 times higher than that of pure PDMS. The composites had excellent mechanical properties and thermal stability, meeting the demands of modern electronic products for integration, multi-functionality, and miniaturization.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (60KB)</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 422-437"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887617","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)60958-9
Pano-Azucena Carolina , Rosas-Rangel Roberto , Olvera-Sosa Miguel , Salvador González-González David , Rangel-Mendez Rene , Felipe Chazaro-Ruiz Luis , Avalos-Borja Miguel , Antonio Arcibar-Orozco Javier
The use of carbon from waste biomass has the potential to eliminate the drawbacks of Li-S batteries and improve their overall performance. Chrome-tanned-leathershavings (CTLS) are a readily available waste product that can be transformed into porous carbon. We prepared an activated carbon by microwave pyrolysis combined with KOH activator using the CTLS as starting materials. The carbon had a specific surface area of 556 m2g−1 and a honeycomb-like structure. Two kinds of N-doped activated carbons were then synthesized by thermal decomposition of the activated carbon, either combined with urea, or impregnated with ethanolamine. Both N-doped activated carbons have an increased number of nitrogen and amine surface groups. However, only the urea treatment was effective in improving the initial capacity of the cell (1363 mAh g−1), which is probably linked to the sorption of long-chain polysulfides. This investigation confirms that it is possible to use the thermal decomposition of urea to obtain carbon materials from CTLS for use as the sulfur-host cathode in Li-S batteries and improve their performance. A radial basis function neural network was fitted to provide statistical support for the experimental results, which confirmed the importance of the nitrogen content of the carbons in determining the discharge capacity of the cells.
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利用废弃生物质中的碳有可能消除锂硫电池的缺点，并提高其整体性能。铬鞣皮革屑（CTLS）是一种容易获得的废物，可以转化为多孔碳。以CTLS为原料，采用微波热解结合KOH活化剂制备活性炭。碳的比表面积为556 m2 - 1，具有蜂窝状结构。采用热分解法制备了两种n掺杂活性炭，分别与尿素结合和乙醇胺浸渍。两种n掺杂活性炭表面的氮和胺基团数量都有所增加。然而，只有尿素处理能有效提高电池的初始容量（1363 mAh g−1），这可能与长链多硫化物的吸附有关。该研究证实了利用尿素热分解从CTLS中获得碳材料作为Li-S电池的硫主阴极并提高其性能的可能性。采用径向基函数神经网络对实验结果进行了统计支持，证实了碳的含氮量对电池放电容量的影响。下载：下载高分辨率图片（159KB）下载：下载全尺寸图片
{"title":"N-doped activated carbons from leather waste produced by microwave activation for use as the cathode of Li-S batteries","authors":"Pano-Azucena Carolina , Rosas-Rangel Roberto , Olvera-Sosa Miguel , Salvador González-González David , Rangel-Mendez Rene , Felipe Chazaro-Ruiz Luis , Avalos-Borja Miguel , Antonio Arcibar-Orozco Javier","doi":"10.1016/S1872-5805(25)60958-9","DOIUrl":"10.1016/S1872-5805(25)60958-9","url":null,"abstract":"<div><div>The use of carbon from waste biomass has the potential to eliminate the drawbacks of Li-S batteries and improve their overall performance. Chrome-tanned-leathershavings (CTLS) are a readily available waste product that can be transformed into porous carbon. We prepared an activated carbon by microwave pyrolysis combined with KOH activator using the CTLS as starting materials. The carbon had a specific surface area of 556 m<sup>2</sup>g<sup>−1</sup> and a honeycomb-like structure. Two kinds of N-doped activated carbons were then synthesized by thermal decomposition of the activated carbon, either combined with urea, or impregnated with ethanolamine. Both N-doped activated carbons have an increased number of nitrogen and amine surface groups. However, only the urea treatment was effective in improving the initial capacity of the cell (1363 mAh g<sup>−1</sup>), which is probably linked to the sorption of long-chain polysulfides. This investigation confirms that it is possible to use the thermal decomposition of urea to obtain carbon materials from CTLS for use as the sulfur-host cathode in Li-S batteries and improve their performance. A radial basis function neural network was fitted to provide statistical support for the experimental results, which confirmed the importance of the nitrogen content of the carbons in determining the discharge capacity of the cells.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (159KB)</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 382-395"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887576","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)60959-0
Ren-tian CHEN , Yu-xin ZHU , Rui LUO , Xiao-nuo JIANG , Hong-xiang SI , Xiang-yun QIU , Qian WANG , Tao WEI
Metal-organic frameworks (MOFs) are important as possible energy storage materials. Nitrogen-doped iron-cobalt MOFs were synthesized by a one-pot solvothermal method using CoCl3·6H2O and FeCl3·6H2O dissolved in N, N-dimethylformamide, and were converted into Fe-Co embedded in N-doped porous carbon polyhedra by pyrolysis in a nitrogen atmosphere. During pyrolysis, the organic ligands transformed into N-doped porous carbon which improved their structural stability and also their electrical contact with other materials. The Fe and Co are tightly bound together because of their encapsulation by the carbon nitride and are well dispersed in the carbon matrix, and improve the material's conductivity and stability and provide additional capacity. When used as the anode for lithium-ion batteries, the material gives an initial capacity of up to 2230.7 mAh g−1 and a reversible capacity of 1146.3 mAh g−1 is retained after 500 cycles at a current density of 0.5 A g−1, making it an excellent candidate for this purpose.
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金属有机骨架（MOFs）是一种重要的储能材料。以CoCl3·6H2O和FeCl3·6H2O溶解于N， N-二甲基甲酰胺中，采用一锅溶剂热法合成了氮掺杂铁钴MOFs，并在氮气气氛中热解转化为Fe-Co包埋在N掺杂多孔碳多面体中。在热解过程中，有机配体转变为掺n的多孔碳，提高了其结构稳定性和与其他材料的电接触性。由于被氮化碳包裹，铁和钴紧密结合在一起，并很好地分散在碳基体中，从而提高了材料的导电性和稳定性，并提供了额外的容量。当用作锂离子电池的阳极时，该材料的初始容量高达2230.7 mAh g - 1，在0.5 a g - 1的电流密度下，500次循环后仍保持1146.3 mAh g - 1的可逆容量，使其成为这一目的的优秀候选人。下载：下载高分辨率图片（121KB）下载：下载全尺寸图片
{"title":"A N-doped carbon with encapsulated Fe and Co particles derived from a metal organic framework for use as the anode in lithium-ion batteries","authors":"Ren-tian CHEN , Yu-xin ZHU , Rui LUO , Xiao-nuo JIANG , Hong-xiang SI , Xiang-yun QIU , Qian WANG , Tao WEI","doi":"10.1016/S1872-5805(25)60959-0","DOIUrl":"10.1016/S1872-5805(25)60959-0","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) are important as possible energy storage materials. Nitrogen-doped iron-cobalt MOFs were synthesized by a one-pot solvothermal method using CoCl<sub>3</sub>·6H<sub>2</sub>O and FeCl<sub>3</sub>·6H<sub>2</sub>O dissolved in N, N-dimethylformamide, and were converted into Fe-Co embedded in N-doped porous carbon polyhedra by pyrolysis in a nitrogen atmosphere. During pyrolysis, the organic ligands transformed into N-doped porous carbon which improved their structural stability and also their electrical contact with other materials. The Fe and Co are tightly bound together because of their encapsulation by the carbon nitride and are well dispersed in the carbon matrix, and improve the material's conductivity and stability and provide additional capacity. When used as the anode for lithium-ion batteries, the material gives an initial capacity of up to 2230.7 mAh g<sup>−1</sup> and a reversible capacity of 1146.3 mAh g<sup>−1</sup> is retained after 500 cycles at a current density of 0.5 A g<sup>−1</sup>, making it an excellent candidate for this purpose.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (121KB)</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 355-365"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887574","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)60963-2
Qian SUN , Ya-feng FAN , Li-jing XIE , Zhen-bing WANG , Xian-hong HUANG , Fang-yuan SU , Cheng-meng CHEN
Filter capacitors play an important role in alternating current (AC)-line filtering for stabilizing voltage, suppressing harmonics, and improving power quality. However, traditional aluminum electrolytic capacitors (AECs) suffer from a large size, short lifespan, low power density, and poor reliability, which limits their use. In contrast, ultrafast supercapacitors (SCs) are ideal for replacing commercial AECs because of their extremely high power densities, fast charging and discharging, and excellent high-frequency response. We review the design principles and key parameters for ultrafast supercapacitors and summarize research progress in recent years from the aspects of electrode materials, electrolytes, and device configurations. The preparation, structures, and frequency response performance of electrode materials mainly consisting of carbon materials such as graphene and carbon nanotubes, conductive polymers, and transition metal compounds, are focused on. Finally, future research directions for ultrafast SCs are suggested.
{"title":"A review of ultrafast supercapacitors for AC-line filtering","authors":"Qian SUN , Ya-feng FAN , Li-jing XIE , Zhen-bing WANG , Xian-hong HUANG , Fang-yuan SU , Cheng-meng CHEN","doi":"10.1016/S1872-5805(25)60963-2","DOIUrl":"10.1016/S1872-5805(25)60963-2","url":null,"abstract":"<div><div>Filter capacitors play an important role in alternating current (AC)-line filtering for stabilizing voltage, suppressing harmonics, and improving power quality. However, traditional aluminum electrolytic capacitors (AECs) suffer from a large size, short lifespan, low power density, and poor reliability, which limits their use. In contrast, ultrafast supercapacitors (SCs) are ideal for replacing commercial AECs because of their extremely high power densities, fast charging and discharging, and excellent high-frequency response. We review the design principles and key parameters for ultrafast supercapacitors and summarize research progress in recent years from the aspects of electrode materials, electrolytes, and device configurations. The preparation, structures, and frequency response performance of electrode materials mainly consisting of carbon materials such as graphene and carbon nanotubes, conductive polymers, and transition metal compounds, are focused on. Finally, future research directions for ultrafast SCs are suggested.\u0000\t\t\t\t<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (153KB)</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 243-269"},"PeriodicalIF":5.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887620","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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