New Carbon Materials最新文献

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Controlled growth of a graphdiyne/cobalt hydroxide heterointerface for efficient chlorine production 受控生长石墨二炔/氢氧化钴异质界面,实现高效氯生产
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-06-01 DOI: 10.1016/S1872-5805(24)60861-9
Hui-min Liu , Xiao-yu Luan , Jia-yu Yan , Fan-le Bu , Yu-rui Xue , Yu-liang Li
{"title":"Controlled growth of a graphdiyne/cobalt hydroxide heterointerface for efficient chlorine production","authors":"Hui-min Liu ,&nbsp;Xiao-yu Luan ,&nbsp;Jia-yu Yan ,&nbsp;Fan-le Bu ,&nbsp;Yu-rui Xue ,&nbsp;Yu-liang Li","doi":"10.1016/S1872-5805(24)60861-9","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60861-9","url":null,"abstract":"<div><p>The chlor-alkali process plays a key and irreplaceable role in the chemical industry because of its use in various industrial processes. However, the low selectivity and efficiency of the reported chlorine evolution reaction (CER) electrocatalysts obviously hinder its practical use. We report a simple method for the controlled growth of high-performance CER electrocatalysts by first growing cobalt hydroxide on the surface of carbon cloth, followed by the <em>in-situ</em> growth of graphdiyne (GDY/Co(OH)<sub>2</sub>). As expected, the as-synthesized catalyst has a small overpotential of only 83 mV at 10 mA cm<sup>−2</sup>, a maximum Faradaic Efficiency (FE) of 91.54%, and a high chlorine yield of 157.11 mg h<sup>−1</sup> cm<sup>−2</sup> in acidic simulated seawater. Experimental results demonstrate that the in-situ growth of GDY on the Co(OH)<sub>2</sub> surface leads to the formation of heterointerfaces with strong electron transfer between GDY and Co atoms, resulting in a higher conductivity, larger active specific surface area and more active sites, thereby improving the overall electrocatalytic selectivity and efficiency.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 3","pages":"Pages 515-525"},"PeriodicalIF":5.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480688","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}
引用次数: 0
A review of the high-concentration processing, densification, and applications of graphene oxide and graphene 氧化石墨烯和石墨烯的高浓度加工、致密化和应用综述
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-06-01 DOI: 10.1016/S1872-5805(24)60856-5
Yue Wang , Jia-liang Luo , Zhe-hong Lu , Jun Di , Su-wei Wang , Wei Jiang
{"title":"A review of the high-concentration processing, densification, and applications of graphene oxide and graphene","authors":"Yue Wang ,&nbsp;Jia-liang Luo ,&nbsp;Zhe-hong Lu ,&nbsp;Jun Di ,&nbsp;Su-wei Wang ,&nbsp;Wei Jiang","doi":"10.1016/S1872-5805(24)60856-5","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60856-5","url":null,"abstract":"<div><p>Dense graphene assemblies, composed of tightly stacked graphene sheets, have outstanding chemical stability and excellent mechanical, thermal, and electrical properties. They also do not have the problems of low density, low mechanical strength, poor electrical conductivity, or poor thermal conductivity found in porous graphene aerogels, making them ideal materials for future portable electronic and smart devices. We summarize work on high-concentration graphene oxide (GO) and graphene dispersions prepared by mechanical dispersion, evaporation concentration, centrifugal concentration, and liquid phase exfoliation, as well as two-dimensional (2D) dense graphene-based films and three-dimensional (3D) dense graphene-based structures prepared by vacuum-assisted filtration, interfacial self-assembly, and press-forming, and evaluate the advantages and disadvantages of each method. The applications of dense graphene-based assemblies in energy storage, thermal management, and electromagnetic interference (EMI) shielding are summarized. Finally, their challenges and prospects in future research are outlined. This review provides a reference for exploring and developing their large-scale, cost-effective manufacture and use.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 3","pages":"Pages 483-505"},"PeriodicalIF":5.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480689","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}
引用次数: 0
A review of the use of graphene-based materials in electromagnetic-shielding 石墨烯基材料在电磁屏蔽中的应用综述
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(24)60840-1
Shang-juan Yang, Yun Cao, Yan-bing He, Wei Lv
{"title":"A review of the use of graphene-based materials in electromagnetic-shielding","authors":"Shang-juan Yang,&nbsp;Yun Cao,&nbsp;Yan-bing He,&nbsp;Wei Lv","doi":"10.1016/S1872-5805(24)60840-1","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60840-1","url":null,"abstract":"<div><p>Electromagnetic radiation has led to potentially harmful effects, and thus, there has been growing research on electromagnetic shielding materials with a wide shielding range, high absorption efficiency and stability. Graphene is a prime candidate in this field due to its low density, outstanding electrical conductivity, and large specific surface area. In this paper, we conclude the fundamental principles of electromagnetic shielding and the structural characteristics of graphene-based materials while highlighting their unique electromagnetic shielding properties. We also provide an overview of common strategies for modifying graphene-based materials, including structural modification and heteroatom doping, and their incorporation in composite materials to improve this property. Structural modification can increase the losses of electromagnetic waves by absorption and multiple reflections, and heteroatom doping and incorporation in composite materials can increase the losses by interface polarization and magnetic effects. Furthermore, we summarize various modification methods for graphene-based electromagnetic shielding materials to inspire the development of materials with lightweight and high shielding bandwidth capabilities.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 223-239"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815629","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}
引用次数: 0
A new anode material for high rate and long life lithium/sodium storage 用于高倍率、长寿命锂/钠存储的新型负极材料
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(24)60845-0
Chun-hui Zhang, Jia-yuan Zhang, Jie-yang Zhan, Jian Yu, Lin-lin Fan, An-ping Yang, Hong Liu, Guang-gang Gao
{"title":"A new anode material for high rate and long life lithium/sodium storage","authors":"Chun-hui Zhang,&nbsp;Jia-yuan Zhang,&nbsp;Jie-yang Zhan,&nbsp;Jian Yu,&nbsp;Lin-lin Fan,&nbsp;An-ping Yang,&nbsp;Hong Liu,&nbsp;Guang-gang Gao","doi":"10.1016/S1872-5805(24)60845-0","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60845-0","url":null,"abstract":"<div><p>It is imperative to design suitable anode materials for both lithium-ion (LIBs) and sodium-ion batteries (SIBs) with a high-rate performance and ultralong cycling life. We fabricated a MoO<sub>2</sub>/MoS<sub>2</sub> heterostructure that was then homogeneously distributed in N,S-doped carbon nanofibers (MoO<sub>2</sub>/MoS<sub>2</sub>@NSC) by electrospinning and sulfurization. The one-dimensional carbon fiber skeleton serves as a conductive frame to decrease the diffusion pathway of Li<sup>+</sup>/Na<sup>+</sup>, while the N/S doping creates abundant active sites and significantly improves the ion diffusion kinetics. Moreover, the deposition of MoS<sub>2</sub> nanosheets on the MoO<sub>2</sub> bulk phase produces an interface that enables fast Li<sup>+</sup>/Na<sup>+</sup> transport, which is crucial for achieving high efficiency energy storage. Consequently, as the anode for LIBs, MoO<sub>2</sub>/MoS<sub>2</sub>@NSC gives an excellent cycling stability of 640 mAh g<sup>−1</sup> for 2 000 cycles under 5.0 A g<sup>−1</sup> with an ultralow average capacity drop of 0.002% per cycle and an exceptional rate capability of 614 mAh g<sup>−1</sup> at 10.0 A g<sup>−1</sup>. In SIBs, it also produces a significantly better electrochemical performance (reversible capacity of 242 mAh g<sup>−1</sup> under 2.0 A g<sup>−1</sup> for 2 000 cycles and 261 mAh g<sup>−1</sup> under 5.0 A g<sup>−1</sup>). This work shows how introducing a novel interface in the anode can produce rapid Li<sup>+</sup>/Na<sup>+</sup> storage kinetics and a long cycling performance.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 308-320"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815647","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}
引用次数: 0
The production of electrodes for microsupercapacitors based on MoS2-modified reduced graphene aerogels by 3D printing 用 3D 打印技术生产基于 MoS2 改性还原石墨烯气凝胶的微型超级电容器电极
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(24)60823-1
Meng-ya Wang , Shi-you Li , Can-kun Gao , Xiao-qi Fan , Yin Quan , Xiao-hua Li , Chun-lei Li , Ning-shuang Zhang
{"title":"The production of electrodes for microsupercapacitors based on MoS2-modified reduced graphene aerogels by 3D printing","authors":"Meng-ya Wang ,&nbsp;Shi-you Li ,&nbsp;Can-kun Gao ,&nbsp;Xiao-qi Fan ,&nbsp;Yin Quan ,&nbsp;Xiao-hua Li ,&nbsp;Chun-lei Li ,&nbsp;Ning-shuang Zhang","doi":"10.1016/S1872-5805(24)60823-1","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60823-1","url":null,"abstract":"<div><p>Micro-supercapacitors (MSCs) are of interest because of their high power density and excellent cycling performance, offering a broad array of potential applications. However, preparing electrodes for the MSCs with an extremely high areal capacitance and energy density remains a challenge. We constructed MSC electrodes with an ultra-high area capacitance and a high energy density, using reduced graphene oxide aerogel (GA) and MoS<sub>2</sub> as the active materials, combined with 3D printing and surface modification. Using 3D printing, we obtained electrodes with a stable macrostructure and a GA-crosslinked micropore structure. We also used a solution method to load the surface of the printed electrode with molybdenum disulfide nanosheets, further improving the electrochemical performance. The surface capacitance of the electrode reached 3.99 F cm<sup>−2</sup>, the power density was 194 W cm<sup>−2</sup>, and the energy density was 1 997 mWh cm<sup>−2</sup>, confirming its excellent electrochemical performance and cycling stability. This work provides a simple and efficient method for preparing MSC electrodes with a high areal capacitance and energy density, making them ideal for portable electronic devices.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 283-296"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815635","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}
引用次数: 0
A review of graphdiyne: A new material for synthesizing effective adsorbents for aqueous contaminants 石墨二炔综述:合成水污染物有效吸附剂的新材料
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(24)60830-9
Gaurav Sharma , Yaksha Verma , Amit Kumar , Pooja Dhiman , Tong-tong Wang , Florian J. Stadler
{"title":"A review of graphdiyne: A new material for synthesizing effective adsorbents for aqueous contaminants","authors":"Gaurav Sharma ,&nbsp;Yaksha Verma ,&nbsp;Amit Kumar ,&nbsp;Pooja Dhiman ,&nbsp;Tong-tong Wang ,&nbsp;Florian J. Stadler","doi":"10.1016/S1872-5805(24)60830-9","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60830-9","url":null,"abstract":"<div><p>Graphdiyne (GDY), a new two-dimensional (2D) carbon molecule, is expected to have applications in the removal of contaminants from aqueous media. It has superior conjugation, unusual and varied electronic properties, and exceptional chemical and thermal stability because of its framework of sp and sp<sup>2</sup> hybridized carbon bonds that are combined to produce benzene rings and diacetylenic bonds in a two-dimensional symmetrical network. Its molecular chemistry is the result of it having carbon-carbon triple bonds, with a regular distribution of triangular pores in its structure, which provide reaction sites and various reaction pathways. GDY is an adsorbent with an excellent efficiency for the removal of oil, organic pollutants, dyes, and metals from contaminated water, but there is limited evidence of it being used as an adsorbent in the literature. This review discusses its synthesis and its use as an adsorbent together with its prospects for pollutant removal.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 173-200"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815627","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}
引用次数: 0
N-doped hollow carbon nanospheres embedded in N-doped graphene loaded with palladium nanoparticles as an efficient electrocatalyst for formic acid oxidation 嵌入掺杂 N 的石墨烯并负载钯纳米颗粒的 N 掺杂空心碳纳米球作为甲酸氧化的高效电催化剂
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(24)60844-9
Yue Fang , Fu-kai Yang , Wei-li Qu , Chao Deng , Zhen-bo Wang
{"title":"N-doped hollow carbon nanospheres embedded in N-doped graphene loaded with palladium nanoparticles as an efficient electrocatalyst for formic acid oxidation","authors":"Yue Fang ,&nbsp;Fu-kai Yang ,&nbsp;Wei-li Qu ,&nbsp;Chao Deng ,&nbsp;Zhen-bo Wang","doi":"10.1016/S1872-5805(24)60844-9","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60844-9","url":null,"abstract":"<div><p>Efficient electrocatalysts with a low cost, high activity and good durability play a crucial role in the use of direct formic acid fuel cells. Pd nanoparticles supported on N-doped hollow carbon nanospheres (NHCNs) embedded in an assembly of N-doped graphene (NG) with a three-dimensional (3D) porous structure by a simple and economical method were investigated as direct formic acid fuel cell catalysts. Because of the unique porous configuration of interconnected layers doped with nitrogen atoms, the Pd/NHCN@NG catalyst with Pd nanoparticles has a large catalytic active surface area, superior electrocatalytic activity, a high steady-state current density, and a strong resistance to CO poisoning, far surpassing those of conventional Pd/C, Pd/NG, and Pd/NHCN catalysts for formic acid electrooxidation. When the HCN/GO mass ratio was 1:1, the Pd/NHCN@NG catalyst had an outstanding performance in the catalytic oxidation of formic acid, with an activity 4.21 times that of Pd/C. This work indicates a way to produce superior carbon-based support materials for electrocatalysts, which will be beneficial for the development of fuel cells.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 321-333"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815648","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}
引用次数: 0
Polyimide-assisted fabrication of highly oriented graphene-based all-carbon foams for increasing the thermal conductivity of polymer composites 聚酰亚胺辅助制造高取向石墨烯基全碳泡沫,提高聚合物复合材料的热导率
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(24)60835-8
Ke Xiong , Zhi-peng Sun , Ji-chen Hu , Cheng Ma , Ji-tong Wang , Xiang Ge , Wen-ming Qiao , Li-cheng Ling
{"title":"Polyimide-assisted fabrication of highly oriented graphene-based all-carbon foams for increasing the thermal conductivity of polymer composites","authors":"Ke Xiong ,&nbsp;Zhi-peng Sun ,&nbsp;Ji-chen Hu ,&nbsp;Cheng Ma ,&nbsp;Ji-tong Wang ,&nbsp;Xiang Ge ,&nbsp;Wen-ming Qiao ,&nbsp;Li-cheng Ling","doi":"10.1016/S1872-5805(24)60835-8","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60835-8","url":null,"abstract":"<div><p>Graphene and its derivatives are often preferentially oriented horizontally during processing because of their two-dimensional (2D) layer structure. As a result, thermal interface materials (TIMs) composed of a polymer matrix and graphene-derived fillers often have a high in-plane (IP) thermal conductivity (<em>K</em>), however, the low through-plane (TP) <em>K</em> makes them unsuitable for practical use. We report the development of high-quality polyimide/graphite nanosheets (PG) perpendicular to the plane using a directional freezing technique that increase the TP <em>K</em> of polymer-based composites. Graphene-derived nanosheets (GNs) were obtained by the crushing of scraps of highly thermally conductive graphene films. A water-soluble polyamic acid salt solution was used to disperse the hydrophobic GNs filler to achieve directional freezing. The polyimide, which facilitated the directional alignment of the GNs, was then graphitized. The introduction of the GNs increases the order and density of the PG, thus improving the strength and heat transfer performance of its polydimethylsiloxane (PDMS) composite. The obtained PG/PDMS composite (21.1% PG, mass fraction) has an impressive TP <em>K</em> of 14.56 W·m<sup>−1</sup>·K<sup>−1</sup>, 81 times that of pure PDMS. This simple polyimide-assisted 2D hydrophobic fillers alignment method provides ideas for the widespread fabrication of anisotropic TIMs and enables the reuse of scraps of graphene films.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 271-282"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815634","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}
引用次数: 0
A highly efficient absorptive and catalytic self-supporting Fe2O3/CC host for high performance Li-S batteries 用于高性能锂-S 电池的高效吸收和催化自支撑 Fe2O3/CC 主材料
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(24)60825-5
Zhen Tian , Lei-lei Xue , Hong-yuan Ding
{"title":"A highly efficient absorptive and catalytic self-supporting Fe2O3/CC host for high performance Li-S batteries","authors":"Zhen Tian ,&nbsp;Lei-lei Xue ,&nbsp;Hong-yuan Ding","doi":"10.1016/S1872-5805(24)60825-5","DOIUrl":"https://doi.org/10.1016/S1872-5805(24)60825-5","url":null,"abstract":"<div><p>The lithium-sulfur (Li-S) battery is a promising energy storage system because of its high energy density and low cost. However, the shuttling of lithium polysulfides (LiPSs) and low conductivity of the S cathode are barriers to its practical application. Fe<sub>2</sub>O<sub>3</sub> nanorods were grown on a carbon cloth (Fe<sub>2</sub>O<sub>3</sub>/CC) by a solvothermal reaction and calcination to obtain a cathode for the battery. The mesoporous structure of the Fe<sub>2</sub>O<sub>3</sub> and the CC conducting network facilitates lithium-ion and electron transport. Meanwhile, the nanorod arrangement results in the exposure of more Fe<sub>2</sub>O<sub>3</sub> active sites, which improves the adsorption and rapid conversion of LiPSs. As a result, a Li–S cell using a Fe<sub>2</sub>O<sub>3</sub>/CC cathode has a high capacity of 1 250 mAh g<sup>−1</sup> at 0.1 C with an excellent life of over 100 cycles with a capacity retention of 67%. It also has a 70% capacity retention after 1 000 cycles at 0.2 C. The excellent electrochemical performance of the Fe<sub>2</sub>O<sub>3</sub>/CC cathode indicates its potential applications in Li-S batteries.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 345-353"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815500","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}
引用次数: 0
The oxidation reaction mechanism and its kinetics for a carbonaceous precursor prepared from ethylene tar for use as an anode material for lithium-ion batteries 乙烯焦油制备的碳质前驱体用作锂离子电池负极材料的氧化反应机理及其动力学研究
IF 5.7 3区 材料科学
New Carbon Materials Pub Date : 2024-04-01 DOI: 10.1016/S1872-5805(22)60597-3
Tian-rui Guo, Rong-qi Chen, Wei Gao, Yan-li Wang, Liang Zhan
{"title":"The oxidation reaction mechanism and its kinetics for a carbonaceous precursor prepared from ethylene tar for use as an anode material for lithium-ion batteries","authors":"Tian-rui Guo,&nbsp;Rong-qi Chen,&nbsp;Wei Gao,&nbsp;Yan-li Wang,&nbsp;Liang Zhan","doi":"10.1016/S1872-5805(22)60597-3","DOIUrl":"https://doi.org/10.1016/S1872-5805(22)60597-3","url":null,"abstract":"<div><p>The oxidation reaction mechanism and its kinetics for ethylene tar were investigated in order to obtain a suitable anode material for Li-ion batteries. The oxidation of ethylene tar was divided into 3 stages (350–550, 550–700 and 700–900 K) according to the thermogravimetric curve. To reveal the oxidation reaction mechanism, the components of the gases evolved at different stages were analyzed by mass spectrometry and infrared technology. Based on these results the reaction was divided into 4 stages (323–400, 400–605, 605–750 and 750–860 K) to perform simulation calculations of the kinetics. Using the iso-conversion method (Coats-Redfern) to analyze the linear regression rates (R2) between 17 common reaction kinetics models and experimental data, an optimum reaction kinetics model for expressing the oxidation of ethylene tar was determined and the results were as follows. (1) During oxidation, the side chains of aromatic compounds first react with oxygen to form alcohols and aldehydes, leaving peroxy-radicals on aromatic rings. Subsequently, the aromatic compounds with peroxy-radicals undergo polymerization/condensation reactions to form larger molecules. (2) A fourth-order reaction model was used to describe the first 3 stages in the oxidation process, and the activation energies are 47.33, 18.69 and 9.00 kJ·mol<sup>−1</sup> at 323–400, 400–605, 605–750 K, respectively. A three-dimensional diffusion model was applied to the fourth stage of the oxidation process, and the activation energy is 88.37 kJ·mol<sup>−1</sup> at 750–860 K. A high softening point pitch was also produced for use as a coating of the graphite anode, and after it had been applied the capacity retention after 300 cycles increased from 51.54% to 79.07%.</p></div>","PeriodicalId":19719,"journal":{"name":"New Carbon Materials","volume":"39 2","pages":"Pages 354-366"},"PeriodicalIF":5.7,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815501","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}
引用次数: 0
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