Pub Date : 2025-02-01DOI: 10.1016/S1872-5805(25)60948-6
Zheng-xuan LI , Xi WU , Bo JIANG , Wang YANG , Jun-yan DONG , Zhong-zhen DING , Chen ZHANG , Shao-xiong DU , Si-yuan LI , Ruo-yao FENG , Yong-feng LI
The ever-increasing integration of electronic devices has inevitably caused electromagnetic interference and heat accumulation problems, and dual-function materials with both a high thermal conductivity and high electromagnetic wave absorption (EWA) are regarded as an effective strategy for solving these problems. Carbon materials are widely used as thermal and EWA fillers due to their excellent conductivity and outstanding thermal conduction properties, and have become a research hotspot in the field of high thermal conductivity, microwave absorbing materials in recent years. The status of current research progress on carbon-based high thermalconduction microwave absorption materials, including carbon fibers, carbon nanotubes, graphene and amorphous carbon, is reviewed, and the influence of the structure of the materials on their absorption and thermal conductivity properties, such as core-shell structure, three-dimensional network structure, and heteroatom doping, is also elaborated. Feasible solutions for the current problems with these materials are proposed, with the aim of providing valuable guidance for the future design of carbon-based high thermal conduction microwave absorbing materials.
{"title":"A review of high thermal conductivity carbon-based materials for microwave absorption materials","authors":"Zheng-xuan LI , Xi WU , Bo JIANG , Wang YANG , Jun-yan DONG , Zhong-zhen DING , Chen ZHANG , Shao-xiong DU , Si-yuan LI , Ruo-yao FENG , Yong-feng LI","doi":"10.1016/S1872-5805(25)60948-6","DOIUrl":"10.1016/S1872-5805(25)60948-6","url":null,"abstract":"<div><div>The ever-increasing integration of electronic devices has inevitably caused electromagnetic interference and heat accumulation problems, and dual-function materials with both a high thermal conductivity and high electromagnetic wave absorption (EWA) are regarded as an effective strategy for solving these problems. Carbon materials are widely used as thermal and EWA fillers due to their excellent conductivity and outstanding thermal conduction properties, and have become a research hotspot in the field of high thermal conductivity, microwave absorbing materials in recent years. The status of current research progress on carbon-based high thermalconduction microwave absorption materials, including carbon fibers, carbon nanotubes, graphene and amorphous carbon, is reviewed, and the influence of the structure of the materials on their absorption and thermal conductivity properties, such as core-shell structure, three-dimensional network structure, and heteroatom doping, is also elaborated. Feasible solutions for the current problems with these materials are proposed, with the aim of providing valuable guidance for the future design of carbon-based high thermal conduction microwave absorbing materials.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (119KB)</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 1","pages":"Pages 111-130"},"PeriodicalIF":5.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/S1872-5805(25)60943-7
Theodore Azemtsop Manfo , Hannu Laaksonen
Supercapacitors are gaining popularity due to their high cycling stability, power density, and fast charge and discharge rates. Researchers are exploring electrode materials, electrolytes, and separators for cost-effective energy storage systems. Advances in materials science have led to the development of hybrid nanomaterials, such as combining filamentous carbon forms with inorganic nanoparticles, to create new charge and energy transfer processes. Notable materials for electrochemical energy-storage applications include MXenes, 2D transition metal carbides, and nitrides, carbon black, carbon aerogels, activated carbon, carbon nanotubes, conducting polymers, carbon fibers, and nanofibers, and graphene, because of their thermal, electrical, and mechanical properties. Carbon materials mixed with conducting polymers, ceramics, metal oxides, transition metal oxides, metal hydroxides, transition metal sulfides, transition metal dichalcogenide, metal sulfides, carbides, nitrides, and biomass materials have received widespread attention due to their remarkable performance, eco-friendliness, cost-effectiveness, and renewability. This article explores the development of carbon-based hybrid materials for future supercapacitors, including electric double-layer capacitors, pseudocapacitors, and hybrid supercapacitors. It investigates the difficulties that influence structural design, manufacturing (electrospinning, hydrothermal/ solvothermal, template-assisted synthesis, electrodeposition, electrospray, 3D printing) techniques and the latest carbon-based hybrid materials research offer practical solutions for producing high-performance, next-generation supercapacitors.
{"title":"A review of carbon-based hybrid materials for supercapacitors","authors":"Theodore Azemtsop Manfo , Hannu Laaksonen","doi":"10.1016/S1872-5805(25)60943-7","DOIUrl":"10.1016/S1872-5805(25)60943-7","url":null,"abstract":"<div><div>Supercapacitors are gaining popularity due to their high cycling stability, power density, and fast charge and discharge rates. Researchers are exploring electrode materials, electrolytes, and separators for cost-effective energy storage systems. Advances in materials science have led to the development of hybrid nanomaterials, such as combining filamentous carbon forms with inorganic nanoparticles, to create new charge and energy transfer processes. Notable materials for electrochemical energy-storage applications include MXenes, 2D transition metal carbides, and nitrides, carbon black, carbon aerogels, activated carbon, carbon nanotubes, conducting polymers, carbon fibers, and nanofibers, and graphene, because of their thermal, electrical, and mechanical properties. Carbon materials mixed with conducting polymers, ceramics, metal oxides, transition metal oxides, metal hydroxides, transition metal sulfides, transition metal dichalcogenide, metal sulfides, carbides, nitrides, and biomass materials have received widespread attention due to their remarkable performance, eco-friendliness, cost-effectiveness, and renewability. This article explores the development of carbon-based hybrid materials for future supercapacitors, including electric double-layer capacitors, pseudocapacitors, and hybrid supercapacitors. It investigates the difficulties that influence structural design, manufacturing (electrospinning, hydrothermal/ solvothermal, template-assisted synthesis, electrodeposition, electrospray, 3D printing) techniques and the latest carbon-based hybrid materials research offer practical solutions for producing high-performance, next-generation supercapacitors.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (158KB)</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 1","pages":"Pages 81-110"},"PeriodicalIF":5.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/S1872-5805(25)60951-6
Jing-jing YAN , Xiao-hao FANG , De-zhou YAO , Cheng-wei ZHU , Jian-jun SHI , Shan-shan QIAN
Carbon materials with adjustable porosity, controllable heteroatom doping and low-cost have been received considerable attention as supercapacitor electrodes. However, using carbon materials with abundant micropores, a high surface area and a high-dopant content for an aqueous supercapacitor with a high energy output still remains a challenge. We report the easy synthesis of interconnected carbon spheres by a polymerization reaction between p-benzaldehyde and 2,6-diaminopyridine. The synthesis involves adjusting the mass ratio of the copolymer and KOH activator to achieve increased charge storage ability and high energy output, which are attributed to the high ion-accessible area provided by the large number of micropores, high N/O contents and rapid ion diffusion channels in the porous structure. At a PMEC∶KOH mass ratio of 1∶1, the high electrolyte ion-adsorption area (2599.76 m2 g−1) and the N/O dopant atoms of the conductive framework of a typical carbon electrode produce a superior specific capacity (303.2 F g−1@0.5 A g−1) giving an assembled symmetric capacitor a high energy delivery of 11.3 Wh kg−1@250 W kg−1. This study presents a simple strategy for synthesizing microporous carbon and highlights its potential use in KOH-based supercapacitors.
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孔隙率可调、杂原子掺杂可控、成本低的碳材料作为超级电容器电极受到广泛关注。然而，使用具有丰富微孔、高表面积和高掺杂含量的碳材料制造具有高能量输出的水性超级电容器仍然是一个挑战。我们报道了通过对苯甲醛和2,6-二氨基吡啶的聚合反应，简单地合成了相互连接的碳球。该合成通过调节共聚物和KOH活化剂的质量比来提高电荷存储能力和高能量输出，这是由于多孔结构中大量的微孔、高N/O含量和快速的离子扩散通道提供了高离子可达面积。在PMEC∶KOH质量比为1∶1时，典型碳电极的导电框架的高电解质离子吸附面积（2599.76 m2 g−1）和N/O掺杂原子产生了优越的比容量（303.2 F g−1@0.5 a g−1），使组装的对称电容器具有11.3 Wh kg−1@250 W kg−1的高能量输送。本研究提出了一种简单的合成微孔碳的策略，并强调了其在koh基超级电容器中的潜在应用。下载：下载高分辨率图片（53KB）下载：下载全尺寸图片
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Pub Date : 2025-02-01DOI: 10.1016/S1872-5805(25)60950-4
Pin-xiang LI , Zhe-han YI , Ye-xing WANG , Chang HE , Ji LIANG , Feng HOU
Aqueous zinc ion batteries are regarded as one of the most promising candidates for large-scale energy storage due to their high safety, cost-effectiveness, and environmental friendliness. However, uncontrolled zinc dendrite growth and side reactions of the zinc anode decrease the stability of Zn batteries. We report the synthesis of an air-oxidized carbon nanotube (O-CNT) film by chemical vapor deposition followed by heat treatment in air which is used as a protective layer on the Zn foil to suppress zinc dendrite growth. The increase in the hydrophilicity of the O-CNT film caused by air oxidation facilitates zinc deposition between the film and the anode instead of deposition on the film surface. The porous structure of the O-CNT film homogenizes the Zn2+ ion flux and the electric field on the surface of the Zn foil, leading to the uniform deposition of Zn. As a result, a O-CNT@Zn symmetric cell has a much better cycling stability with a life of more than 3000 h at 1 mA cm−2 with a capacity of 1 mAh cm−2, and values of more than 2000 h and 1 mAh cm−2 at 5 mA cm−2. In addition, a O-CNT@Zn || Mn2+ inserted hydrated vanadium pentoxide (MnVOH) full cell has a better rate performance than a Zn || MnVOH cell, achieving a high discharge capacity of 194 mAh g−1 at a high current density of 8 A g−1. In a long-term cycling test, the O-CNT@Zn || MnVOH full cell has a capacity retention of 58.8% after 2000 cycles at a current density of 5 A·g−1.
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水锌离子电池因其高安全性、高成本效益和环境友好性被认为是大规模储能最有前途的候选者之一。然而，锌枝晶生长不受控制和锌阳极的副反应降低了锌电池的稳定性。采用化学气相沉积和空气热处理的方法合成了一种空气氧化碳纳米管（O-CNT）薄膜，该薄膜用作锌箔的保护层以抑制锌枝晶的生长。空气氧化导致O-CNT膜亲水性提高，有利于锌在膜与阳极之间沉积，而不是沉积在膜表面。O-CNT薄膜的多孔结构使锌箔表面的Zn2+离子通量和电场均匀化，从而使锌的沉积均匀。因此，O-CNT@Zn对称电池具有更好的循环稳定性，在1ma cm - 2时的寿命超过3000小时，容量为1mah cm - 2，在5ma cm - 2时的值超过2000小时和1mah cm - 2。此外，O-CNT@Zn || Mn2+插入的水合五氧化钒（MnVOH）电池具有比Zn || MnVOH电池更好的倍率性能，在8 a g−1的高电流密度下实现了194 mAh g−1的高放电容量。在长期循环测试中，在5 a·g−1的电流密度下，O-CNT@Zn || MnVOH满电池在2000次循环后的容量保持率为58.8%。下载：下载高清图片（102KB）下载：下载全尺寸图片
{"title":"The use of an oxidized carbon nanotube film to control Zn deposition and eliminate dendrite formation in a Zn ion battery","authors":"Pin-xiang LI , Zhe-han YI , Ye-xing WANG , Chang HE , Ji LIANG , Feng HOU","doi":"10.1016/S1872-5805(25)60950-4","DOIUrl":"10.1016/S1872-5805(25)60950-4","url":null,"abstract":"<div><div>Aqueous zinc ion batteries are regarded as one of the most promising candidates for large-scale energy storage due to their high safety, cost-effectiveness, and environmental friendliness. However, uncontrolled zinc dendrite growth and side reactions of the zinc anode decrease the stability of Zn batteries. We report the synthesis of an air-oxidized carbon nanotube (O-CNT) film by chemical vapor deposition followed by heat treatment in air which is used as a protective layer on the Zn foil to suppress zinc dendrite growth. The increase in the hydrophilicity of the O-CNT film caused by air oxidation facilitates zinc deposition between the film and the anode instead of deposition on the film surface. The porous structure of the O-CNT film homogenizes the Zn<sup>2+</sup> ion flux and the electric field on the surface of the Zn foil, leading to the uniform deposition of Zn. As a result, a O-CNT@Zn symmetric cell has a much better cycling stability with a life of more than 3000 h at 1 mA cm<sup>−2</sup> with a capacity of 1 mAh cm<sup>−2</sup>, and values of more than 2000 h and 1 mAh cm<sup>−2</sup> at 5 mA cm<sup>−2</sup>. In addition, a O-CNT@Zn || Mn<sup>2+</sup> inserted hydrated vanadium pentoxide (MnVOH) full cell has a better rate performance than a Zn || MnVOH cell, achieving a high discharge capacity of 194 mAh g<sup>−1</sup> at a high current density of 8 A g<sup>−1</sup>. In a long-term cycling test, the O-CNT@Zn || MnVOH full cell has a capacity retention of 58.8% after 2000 cycles at a current density of 5 A·g<sup>−1</sup>.</div><div><span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (102KB)</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 1","pages":"Pages 154-166"},"PeriodicalIF":5.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The design of cost-effective and efficient metal-free carbon-based catalysts for the hydrogen evolution reaction (HER) is of great significance for increasing the production of clean hydrogen by the electrolysis of alkaline water. Precise control of the electronic structure by heteroatom doping has proven to be efficient for increasing catalytic activity. Nevertheless, both the structural characteristics and the underlying mechanism are not well understood, especially for doping with two different atoms, thus limiting the use of these catalysts. We report the production of phosphorus and nitrogen co-doped hollow carbon nanospheres (HCNs) by the copolymerization of pyrrole and aniline at a Triton X-100 micelle-interface, followed by doping with phytic acid and carbonization. The unique pore structure and defect-rich framework of the HCNs expose numerous active sites. Crucially, the combined effect of graphitic nitrogen and phosphorus-carbon bonds modulate the local electronic structure of adjacent C atoms and facilitates electron transfer. As a result, the HCN carbonized at 1100 °C exhibited superior HER activity and an outstanding stability (70 h at a current density of 10 mA cm−2) in alkaline water, because of the large number of graphitic nitrogen and phosphorus-carbon bonds.
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设计经济高效的无金属碳基析氢反应催化剂，对提高碱水电解制氢效率具有重要意义。杂原子掺杂对电子结构的精确控制已被证明是提高催化活性的有效方法。然而，无论是结构特征和潜在的机制都不太清楚，特别是掺杂两种不同的原子，从而限制了这些催化剂的使用。本文报道了吡咯和苯胺在Triton X-100胶束界面上共聚，然后掺杂植酸和碳化制备磷氮共掺杂空心碳纳米球（HCNs）。hcn独特的孔隙结构和富含缺陷的框架暴露了许多活性位点。至关重要的是，石墨氮和磷碳键的联合作用调节了相邻C原子的局部电子结构，促进了电子转移。结果表明，在1100℃下碳化的HCN在碱性水中表现出优异的HER活性和出色的稳定性（在10 mA cm−2电流密度下70 h），这是因为石墨氮和磷碳键的大量存在。下载：下载高清图片（98KB）下载：下载全尺寸图片
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Pub Date : 2025-02-01DOI: 10.1016/S1872-5805(25)60952-8
Yu-si LIU , Xing-he ZHAO , Kai-xue WANG
The composition and structure of the sulfur host material in lithium-sulfur batteries are the main reasons for differences in battery performance, and one that is both economical and environmentally friendly is needed for producing practical batteries. We have used an innovative method to prepare nitrogen-doped porous carbon nanosheets (N-PPCNs) from the petioles of palm trees. A nitrogen dopped material consisting of stacks of these nano-sheets was synthesized by soaking the petioles in urea followed by chemical activation. The porous carbon materials were uniformly doped with nitrogen and were used as the sulfur host material, which increased the adsorption energy of polysulfides and accelerated the conversion from long-chain polysulfides to short-chain polysulfides. The porous structure and nitrogen doping work together to suppress the “shuttle effect”, enabling the electrode to achieve a high specific capacity of 1257 mAh g−1, and still maintain a specific capacity of 490 mAh g−1 after 500 cycles at a rate of 1 C. This work demonstrates the potential reuse of waste biomass.
锂硫电池中硫主体材料的组成和结构是造成电池性能差异的主要原因，生产实用电池需要一种既经济又环保的主体材料。我们采用了一种创新的方法，从棕榈树的叶柄制备了氮掺杂的多孔碳纳米片（N-PPCNs）。通过将叶柄浸泡在尿素中并进行化学活化，合成了一种由这些纳米片堆叠而成的氮掺杂材料。采用均匀掺杂氮的多孔碳材料作为硫宿主材料，提高了多硫化物的吸附能，加速了长链多硫化物向短链多硫化物的转化。多孔结构和氮掺杂共同抑制了“穿梭效应”，使电极达到1257 mAh g−1的高比容量，并且在以1 c的速率循环500次后仍保持490 mAh g−1的比容量。
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Pub Date : 2024-12-01DOI: 10.1016/S1872-5805(24)60865-6
Yan-ting Lang , Yu He , Huai-he Song , Li-ming Yi , Hai-jun Deng , Xiao-hong Chen
Photothermal conversion is the process of converting solar energy into thermal energy which allows for the use of solar energy, a clean and renewable resource, to alleviate energy scarcity. Carbon aerogel materials with a highly developed pore structure, excellent light capture, and high photothermal conversion efficiency are currently an important research topic in the field of photothermal conversion. The principles of photothermal conversion for various photothermal materials are outlined and research progress on different types of carbon aerogels, including graphene, carbon nanotube, biomass-based carbon, and polymer-based carbon aerogels, as photothermal materials. The use of carbon aerogels as photothermal materials in solar water evaporation, thermal energy storage, photothermal catalysis, photothermal therapy, and photothermal de-icing are then introduced.
{"title":"Progress in the research of carbon aerogel in photothermal conversion","authors":"Yan-ting Lang , Yu He , Huai-he Song , Li-ming Yi , Hai-jun Deng , Xiao-hong Chen","doi":"10.1016/S1872-5805(24)60865-6","DOIUrl":"10.1016/S1872-5805(24)60865-6","url":null,"abstract":"<div><div>Photothermal conversion is the process of converting solar energy into thermal energy which allows for the use of solar energy, a clean and renewable resource, to alleviate energy scarcity. Carbon aerogel materials with a highly developed pore structure, excellent light capture, and high photothermal conversion efficiency are currently an important research topic in the field of photothermal conversion. The principles of photothermal conversion for various photothermal materials are outlined and research progress on different types of carbon aerogels, including graphene, carbon nanotube, biomass-based carbon, and polymer-based carbon aerogels, as photothermal materials. The use of carbon aerogels as photothermal materials in solar water evaporation, thermal energy storage, photothermal catalysis, photothermal therapy, and photothermal de-icing are then introduced.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 6","pages":"Pages 1075-1087"},"PeriodicalIF":5.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143312583","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 : 2024-12-01DOI: 10.1016/S1872-5805(24)60892-9
Ling Bai , Qian Liu , Tao Hong , Hao-ran Li , Fang-yuan Zhu , Hai-gang Liu , Zi-quan Li , Zhen-dong Huang
Carbon with its high electrical conductivity, excellent chemical stability, and structure ability is the most promising anode material for sodium and potassium ion batteries. We developed a defect-rich porous carbon framework (DRPCF) built with N/O-co-doped mesoporous nanosheets and containing many defects using porous g-C3N4 (PCN) and dopamine (DA) as raw materials. We prepared samples with PCN/DA mass ratios of 1/1, 2/1 and 3/1 and found that the one with a mass ratio of 2/1 and a carbonization temperature of 700 °C in an Ar atmosphere (DRPCF-2/1-700), had a large specific surface area with an enormous pore volume and a large number of N/O heteroatom active defect sites. Because of this, it had the best pseudocapacitive sodium and potassium ion storage performance. A half battery of Na//DRPCF-2/1-700 maintained a capacity of 328.2 mAh g−1 after being cycled at 1 A g−1 for 900 cycles, and a half battery of K//DRPC-2/1-700 maintained a capacity of 321.5 mAh g−1 after being cycled at 1 A g−1 for 1 200 cycles. The rate capability and cycling stability achieved by DRPCF-2/1-700 outperforms most reported carbon materials. Finally, ex-situ Raman spectroscopy analysis result confirms that the filling and removing of K+ and Na+ from the electrochemically active defects are responsible for the high capacity, superior rate and cycling performance of the DRPCF-2/1-700 sample.
碳具有高导电性、优异的化学稳定性和结构能力，是钠离子电池和钾离子电池最有前途的负极材料。以多孔g-C3N4 （PCN）和多巴胺（DA）为原料，利用N/ o共掺杂介孔纳米片构建了含有多种缺陷的富缺陷多孔碳骨架（DRPCF）。我们制备了PCN/DA质量比分别为1/ 1,2 /1和3/1的样品，发现质量比为2/1，在Ar气氛中碳化温度为700℃的样品（DRPCF-2/1-700）具有较大的比表面积、巨大的孔体积和大量的N/O杂原子活性缺陷位点。因此，它具有最佳的假电容性钠离子和钾离子存储性能。半电池Na//DRPCF-2/1-700在1 A g−1条件下循环900次后容量保持在328.2 mAh g−1，半电池K// DRPCF-2/1-700在1 A g−1条件下循环1200次后容量保持在321.5 mAh g−1。DRPCF-2/1-700实现的速率能力和循环稳定性优于大多数报道的碳材料。最后，非原位拉曼光谱分析结果证实，在电化学活性缺陷中填充和去除K+和Na+是DRPCF-2/1-700样品具有高容量、高倍率和高循环性能的原因。
{"title":"Defect-rich N/O-co-doped porous carbon frameworks as anodes for superior potassium and sodium-ion batteries","authors":"Ling Bai , Qian Liu , Tao Hong , Hao-ran Li , Fang-yuan Zhu , Hai-gang Liu , Zi-quan Li , Zhen-dong Huang","doi":"10.1016/S1872-5805(24)60892-9","DOIUrl":"10.1016/S1872-5805(24)60892-9","url":null,"abstract":"<div><div>Carbon with its high electrical conductivity, excellent chemical stability, and structure ability is the most promising anode material for sodium and potassium ion batteries. We developed a defect-rich porous carbon framework (DRPCF) built with N/O-co-doped mesoporous nanosheets and containing many defects using porous g-C<sub>3</sub>N<sub>4</sub> (PCN) and dopamine (DA) as raw materials. We prepared samples with PCN/DA mass ratios of 1/1, 2/1 and 3/1 and found that the one with a mass ratio of 2/1 and a carbonization temperature of 700 °C in an Ar atmosphere (DRPCF-2/1-700), had a large specific surface area with an enormous pore volume and a large number of N/O heteroatom active defect sites. Because of this, it had the best pseudocapacitive sodium and potassium ion storage performance. A half battery of Na//DRPCF-2/1-700 maintained a capacity of 328.2 mAh g<sup>−1</sup> after being cycled at 1 A g<sup>−1</sup> for 900 cycles, and a half battery of K//DRPC-2/1-700 maintained a capacity of 321.5 mAh g<sup>−1</sup> after being cycled at 1 A g<sup>−1</sup> for 1 200 cycles. The rate capability and cycling stability achieved by DRPCF-2/1-700 outperforms most reported carbon materials. Finally, ex-situ Raman spectroscopy analysis result confirms that the filling and removing of K<sup>+</sup> and Na<sup>+</sup> from the electrochemically active defects are responsible for the high capacity, superior rate and cycling performance of the DRPCF-2/1-700 sample.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 6","pages":"Pages 1144-1156"},"PeriodicalIF":5.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143312582","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 : 2024-12-01DOI: 10.1016/S1872-5805(24)60868-1
Ming-chi Jiang, Ning Sun, Jia-xu Yu, Ti-zheng Wang, Razium Ali Somoro, Meng-qiu Jia, Bin Xu
Potassium-ion batteries (PIBs) hold promise for large-scale energy storage, necessitating the development of high-performance anode materials. Carbons with the advantage of structural versatility, are recognized as the most promising anode materials for their commercialization, however the relationship between the carbon anode structure and its electrochemical performance remains unclear. A series of pitch-based soft carbons with different structures were fabricated using carbonization temperatures in the range 600–1400 °C, and their changes in carbon configuration and K-storage performance as a function of carbonization temperature were investigated. Correlations between the carbon crystal size and the low-potential plateau region capacity and between the degree of structural disorder of the carbons with their sloping region capacity were revealed. Among all samples, that obtained by carbonization at 700 °C had a relatively high degree of disorder and a large interlayer spacing, and had a high reversible capacity of 329.4 mAh g−1 with a high initial coulombic efficiency of 72.81%, and maintained a high capacity of 144.2 mAh g−1 at the current rate of 5 C. These findings improve our fundamental understanding of the K-storage process in carbon anodes, and thus facilitate the advance of PIBs.
钾离子电池（PIBs）有望实现大规模储能，这就需要开发高性能阳极材料。碳以其结构通用性的优势，被公认为是最有发展前景的阳极材料，但碳阳极结构与其电化学性能之间的关系尚不清楚。在600 ~ 1400℃的炭化温度范围内制备了一系列不同结构的沥青基软碳，研究了其碳构型和储钾性能随炭化温度的变化。揭示了碳晶体尺寸与低电位高原区容量、碳结构无序度与其斜坡区容量之间的相关关系。其中，700℃炭化得到的样品无序程度较高，层间距大，具有329.4 mAh g−1的高可逆容量，初始库仑效率为72.81%，在5℃的电流下保持144.2 mAh g−1的高容量。这些发现提高了我们对碳阳极k存储过程的基本认识，从而促进了PIBs的发展。
{"title":"Synthesis of pitch-derived carbon anodes for high-performance potassium-ion batteries","authors":"Ming-chi Jiang, Ning Sun, Jia-xu Yu, Ti-zheng Wang, Razium Ali Somoro, Meng-qiu Jia, Bin Xu","doi":"10.1016/S1872-5805(24)60868-1","DOIUrl":"10.1016/S1872-5805(24)60868-1","url":null,"abstract":"<div><div>Potassium-ion batteries (PIBs) hold promise for large-scale energy storage, necessitating the development of high-performance anode materials. Carbons with the advantage of structural versatility, are recognized as the most promising anode materials for their commercialization, however the relationship between the carbon anode structure and its electrochemical performance remains unclear. A series of pitch-based soft carbons with different structures were fabricated using carbonization temperatures in the range 600–1400 °C, and their changes in carbon configuration and K-storage performance as a function of carbonization temperature were investigated. Correlations between the carbon crystal size and the low-potential plateau region capacity and between the degree of structural disorder of the carbons with their sloping region capacity were revealed. Among all samples, that obtained by carbonization at 700 °C had a relatively high degree of disorder and a large interlayer spacing, and had a high reversible capacity of 329.4 mAh g<sup>−1</sup> with a high initial coulombic efficiency of 72.81%, and maintained a high capacity of 144.2 mAh g<sup>−1</sup> at the current rate of 5 C. These findings improve our fundamental understanding of the K-storage process in carbon anodes, and thus facilitate the advance of PIBs.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 6","pages":"Pages 1117-1127"},"PeriodicalIF":5.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143312584","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 : 2024-12-01DOI: 10.1016/S1872-5805(24)60869-3
Jia-jia Xue, Mei-heng Gan, Yong-gen Lu, Qi-lin Wu
Using simple and eco-friendly ethanol solvothermal treatment, dual-emission biomass carbon quantum dots (D-BCQDs) were synthesized from biomass viburnum awabuki leaves. Under excitation with 413 nm wavelength light two emission peaks appeared at 490 and 675 nm and the dots could be tuned to emit crimson, red, purplish red, purple and blue-gray fluorescence by changing the solvothermal temperature from 140 °C to 160, 180, 200 and 240 °C, respectively. XPS and FTIR characterization indicated that the fluorescence color was mainly determined by surface oxidation defects, elemental nitrogen and sp2-C/sp3-C hybridized structural domains. The D-BCQDs could not only detect Fe3+ or Cu2+, but also quantify the concentration ratio of Fe3+ to Cu2+ in a solution containing both, demonstrating their potential applications in the simultaneous detection of Fe3+ and Cu2+ ions.
{"title":"Fluorescence color tuning of dual-emission carbon quantum dots produced from biomass and their use in Fe3+ and Cu2+ detection","authors":"Jia-jia Xue, Mei-heng Gan, Yong-gen Lu, Qi-lin Wu","doi":"10.1016/S1872-5805(24)60869-3","DOIUrl":"10.1016/S1872-5805(24)60869-3","url":null,"abstract":"<div><div>Using simple and eco-friendly ethanol solvothermal treatment, dual-emission biomass carbon quantum dots (D-BCQDs) were synthesized from biomass viburnum awabuki leaves. Under excitation with 413 nm wavelength light two emission peaks appeared at 490 and 675 nm and the dots could be tuned to emit crimson, red, purplish red, purple and blue-gray fluorescence by changing the solvothermal temperature from 140 °C to 160, 180, 200 and 240 °C, respectively. XPS and FTIR characterization indicated that the fluorescence color was mainly determined by surface oxidation defects, elemental nitrogen and sp<sup>2</sup>-C/sp<sup>3</sup>-C hybridized structural domains. The D-BCQDs could not only detect Fe<sup>3+</sup> or Cu<sup>2+</sup>, but also quantify the concentration ratio of Fe<sup>3+</sup> to Cu<sup>2+</sup> in a solution containing both, demonstrating their potential applications in the simultaneous detection of Fe<sup>3+</sup> and Cu<sup>2+</sup> ions.</div></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 6","pages":"Pages 1213-1226"},"PeriodicalIF":5.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143311675","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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