Article(id=1309589360438239541, tenantId=1146029695717560320, journalId=1308397254396182630, issueId=1309589196793282869, articleNumber=null, orderNo=null, doi=10.3724/2097-213X.2025.JFCT.0032, pmid=null, cstr=32157.14.2097-213X.2025.JFCT.0183, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1759075200000, receivedDateStr=2025-09-29, revisedDate=1762099200000, revisedDateStr=2025-11-03, acceptedDate=1763913600000, acceptedDateStr=2025-11-24, onlineDate=1790160034522, onlineDateStr=2026-09-23, pubDate=1775750400000, pubDateStr=2026-04-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790160034522, onlineIssueDateStr=2026-09-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790160034522, creator=13701087609, updateTime=1790160034522, updator=13701087609, issue=Issue{id=1309589196793282869, tenantId=1146029695717560320, journalId=1308397254396182630, year='2026', volume='54', issue='4', pageStart='20250196-541', pageEnd='20250388-730', issueExtLink='null', onlineDate='null', pubDate='1775750400000', pubDateStr='2026-04-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1790159995506, creator='13701087609', updateTime=1790212943836, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1309811278252703875, tenantId=1146029695717560320, journalId=1308397254396182630, issueId=1309589196793282869, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1309811278252703876, tenantId=1146029695717560320, journalId=1308397254396182630, issueId=1309589196793282869, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=20250261-711, endPage=20250261-719, ext={EN=ArticleExt(id=1309589361977549110, articleId=1309589360438239541, tenantId=1146029695717560320, journalId=1308397254396182630, language=EN, title=Effect of coating asphalt softening point on the pre-oxidation pathway and sodium storage performance of derived hard carbon, columnId=null, journalTitle=Journal of Fuel Chemistry and Technology, columnName=null, runingTitle=null, highlight=null, articleAbstract=
This study clarifies the nonlinear relationship between the softening point of coating asphalt and its oxidative cross-linking behavior, as well as the sodium storage performance of the derived hard carbon. Comparative analysis of asphaltes with low (80 ℃), medium (160 ℃) and high (260 ℃) softening points revealed that both the 80 and 260 ℃ asphaltes incorporated a higher oxygen content (20%−25%) during oxidation, leading to the formation of a deeply cross-linked structure dominated by anhydride and ester groups. This effectively suppressed graphitization during carbonization, yielding hard carbon with large interlayer spacing, high disorder, and abundant closed pores. The derived hard carbon exhibited superior sodium storage performance, the initial charge capacities of EPOC-80 and EPOC-260 reached 314.7 and 306.6 mA·h/g, with first-cycle coulombic efficiencies of 81.3% and 79.3%, respectively, along with excellent cycling stability and rate capability. In contrast, the medium softening point asphalt (160 ℃) showed limited oxygen incorporation (~5%) and insufficient cross-linking after oxidation, resulting in a densely packed hard carbon with smaller interlayer spacing (3.46 Å) and restricted sodium storage sites, which led to a significantly reduced capacity of 173.2 mA·h/g. This work provides new design principles and theoretical support for optimizing hard carbon anode structures through precise control of the precursor softening point.
, authors=Xiaojun LÜ
1, Jingjing DIAO
1, Qingbo ZHAO
1, Tianfeng CAI
2, *, Dongyun HAN
2, Zhanxu YANG
2, Zubin CAO
1, 2, authorsList=Xiaojun LÜ, Jingjing DIAO, Qingbo ZHAO, Tianfeng CAI, Dongyun HAN, Zhanxu YANG, Zubin CAO, authorCompany=null, correspAuthors=Tianfeng CAI, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of Fuel Chemistry and Technology. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1309589367434338659, articleId=1309589360438239541, tenantId=1146029695717560320, journalId=1308397254396182630, language=CN, title=包覆沥青软化点对预氧化路径及其衍生硬炭储钠性能的调控研究, columnId=1309584910000677174, journalTitle=燃料化学学报(中英文), columnName=RESEARCH PAPER, runingTitle=null, highlight=null, articleAbstract=
本研究阐明了包覆沥青软化点对其氧化交联过程及衍生硬炭材料储钠性能的非线性作用机制。通过对低(80 ℃)、中(160 ℃)和高(260 ℃)三种软化点沥青的对比分析发现,80与260 ℃沥青在氧化过程中可引入较高氧含量(20%−25%),形成以酸酐/酯基为主的深度交联结构,有效抑制了炭化过程中的石墨化倾向,最终获得层间距大、无序度高且闭孔丰富的硬炭材料。该材料展现出优异的储钠性能:EPOC-80和EPOC-260的首次充电容量分别达314.7与306.6 mA·h/g,首次库伦效率分别为81.3%与79.3%,并具备良好的循环稳定性和倍率性能。相比之下,中等软化点(160 ℃)沥青氧化后氧含量较低(约5%),交联程度不足,导致所得硬炭结构致密、层间距较小(3.46 Å)、可用于储钠的有效空间有限,其容量显著降低至173.2 mA·h/g。本研究为通过前驱体软化点的精准调控以优化硬炭负极结构提供了新的设计思路与理论支撑。
, authors=吕小军
1, 刁晶晶
1, 赵卿波
1, 蔡天凤
2, *, 韩冬云
2, 杨占旭
2, 曹祖斌
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, copyrightStatement=版权所有©燃料化学学报(中英文) 2026, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=+PDE4mQ73AQW6erIV9NR1g==, magXml=ONDxROYx47BbWTUqR7avrA==, pdfUrl=null, pdf=1AtdALmNhXT+9LLS9XvGzQ==, pdfFileSize=4527038, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=PJh1/I7horAVEESsHTDzHw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=0C3HXGxqUXZV+o4OiNn1vg==, mapNumber=null, fund=null)}, authors=[Author(id=1309589367853769067, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=lyc_lvxiaoj@petrochina.com.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1309589367937655149, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, authorId=1309589367853769067, language=EN, stringName=Xiaojun LÜ, firstName=Xiaojun, middleName=null, lastName=LÜ, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1新疆天利石化股份有限公司, 新疆 克拉玛依 833699)]), AuthorCompany(id=1309589367761494375, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, xref=2, ext=[AuthorCompanyExt(id=1309589367769882984, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, companyId=1309589367761494375, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Liaoning Petrochemical University, Fushun 113001, China), AuthorCompanyExt(id=1309589367782465897, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, companyId=1309589367761494375, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2辽宁石油化工大学, 辽宁 抚顺 113001)])], figs=[ArticleFig(id=1309589371779637656, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Fig.1, caption=
Macroscopic morphology of (a) EPO-80, (b) EPO-160, (c) EPO-260, figureFileSmall=MgZU0ucLwQrYhwZIhnH9Pw==, figureFileBig=PJh1/I7horAVEESsHTDzHw==, tableContent=null), ArticleFig(id=1309589371846746521, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=图1, caption=
(a) EPO-80、(b) EPO-160、(c) EPO-260的宏观形貌, figureFileSmall=MgZU0ucLwQrYhwZIhnH9Pw==, figureFileBig=PJh1/I7horAVEESsHTDzHw==, tableContent=null), ArticleFig(id=1309589372018712986, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Fig.2, caption=
Infrared spectrum of asphalt before oxidation (a) and after oxidation (b) Note: The sample was mixed and ground with potassium bromide (KBr) at a mass ratio of 1∶100 and then pressed into a pellet for Fourier transform infrared (FT-IR) spectroscopic analysis, and the spectrum was recorded in the wavenumber range of 4000 to 600 cm−1., figureFileSmall=IQV5eL2BC5EwMpbiTqwMpA==, figureFileBig=i8iE7VK6RJzz/xUr+FpBzA==, tableContent=null), ArticleFig(id=1309589372102599067, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=图2, caption=
沥青氧化前(a)后(b)的红外光谱谱图, figureFileSmall=IQV5eL2BC5EwMpbiTqwMpA==, figureFileBig=i8iE7VK6RJzz/xUr+FpBzA==, tableContent=null), ArticleFig(id=1309589372165513628, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Fig.3, caption=
EPR spectra of (a) raw asphalt and (b) oxidized asphaltNote: Electron paramagnetic resonance (EPR) measurements were conducted at room temperature with a magnetic field sweep range of 332 to 340 mT., figureFileSmall=iFp9BHfEQUtb0JIyrWRt5Q==, figureFileBig=GsbnpB1G58Lph7jW/JQQgw==, tableContent=null), ArticleFig(id=1309589372253594013, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=图3, caption=
(a)沥青原料和(b)氧化沥青的EPR波谱谱图, figureFileSmall=iFp9BHfEQUtb0JIyrWRt5Q==, figureFileBig=GsbnpB1G58Lph7jW/JQQgw==, tableContent=null), ArticleFig(id=1309589372329091486, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Fig.4, caption=
TG-MS curves of EPO-80, EPO-160 and EPO-260Note: For the thermogravimetric analysis, the sample was heated to 1400 ℃ at a heating rate of 10 ℃/min, and the signals at mass-to-charge ratios (m/z) of 2, 16, 18, 28 and 44 were tracked using the selected ion monitoring mode., figureFileSmall=ck/MRYYvQxUZurZhJuWz9Q==, figureFileBig=mR1i8w10Un3meo+QIcclbg==, tableContent=null), ArticleFig(id=1309589372412977567, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=图4, caption=
EPO-80、EPO-160和EPO-260的TG-MS曲线, figureFileSmall=ck/MRYYvQxUZurZhJuWz9Q==, figureFileBig=mR1i8w10Un3meo+QIcclbg==, tableContent=null), ArticleFig(id=1309589372488475040, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Fig.5, caption=
XRD patterns (a), Raman spectra (b), N2 adsorption/desorption isotherm (c) and pore size distribution curves (d) of asphalt-derived carbon with different softening pointsNote: X-ray diffraction (XRD) patterns were collected within a 2θ range of 10° to 60°. Raman spectra were acquired in the wavenumber range of 1000−2000 cm−1. The specific surface area and pore structure were determined by nitrogen adsorption-desorption measurements at 77 K and the BET model was applied to calculate the surface area., figureFileSmall=Auq9qxiU6zDD4yydkENM1w==, figureFileBig=I8+eC4SWB82vp5q60TaLEg==, tableContent=null), ArticleFig(id=1309589372563972513, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=图5, caption=
(a)不同软化点沥青衍生硬炭XRD谱图、(b)Raman光谱谱图、(c)N2吸附-脱附等温线和(d)孔径分布, figureFileSmall=Auq9qxiU6zDD4yydkENM1w==, figureFileBig=I8+eC4SWB82vp5q60TaLEg==, tableContent=null), ArticleFig(id=1309589372647858594, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Fig.6, caption=
Electrochemical performance: (a) First cycle charge-discharge curve, (b) Rate performance curve, (c) 100-cycle stability curve; GITT charge-discharge curves: (d) EPOC-80, (e) EPOC-160, (f) EPOC-260; sodium ion diffusion coefficient curves: (g) EPOC-80, (h) EPOC-160, (i) EPOC-260, figureFileSmall=rL3BFwMkSiVwzNym5qQCRA==, figureFileBig=cxM+iLC4H1AqClyizs4bkg==, tableContent=null), ArticleFig(id=1309589372727550371, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=图6, caption=
电化学性能:(a)首周充放电曲线,(b)倍率曲线,(c)100圈循环曲线; GITT充放电曲线:(d)EPOC-80,(e)EPOC-160,(f)EPOC-260; 钠离子扩散系数:(g)EPOC-80,(h)EPOC-160,(i)EPOC-260, figureFileSmall=rL3BFwMkSiVwzNym5qQCRA==, figureFileBig=cxM+iLC4H1AqClyizs4bkg==, tableContent=null), ArticleFig(id=1309589372782076324, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Table1, caption=
Basic properties of coating asphalts with different softening points
, figureFileSmall=null, figureFileBig=null, tableContent=
| Asphalt precursor | Softening point/℃ | Coke yield/% | Toluene-insoluble (TI)/% | Quinoline-insoluble (QI)/% |
|---|
| Note: the basic properties of the above-mentioned asphalt were determined in accordance with Chinese National Standards (GB). |
| EP-80 | 78.4 | 37.7 | 4.7 | <0.1 |
| EP-160 | 156.8 | 60.2 | 20.4 | <0.1 |
| EP-260 | 263.2 | 75.3 | 38.6 | 0.42 |
), ArticleFig(id=1309589372857573797, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=表1, caption=
不同软化点包覆沥青的基本性能
, figureFileSmall=null, figureFileBig=null, tableContent=
| Asphalt precursor | Softening point/℃ | Coke yield/% | Toluene-insoluble (TI)/% | Quinoline-insoluble (QI)/% |
|---|
| Note: the basic properties of the above-mentioned asphalt were determined in accordance with Chinese National Standards (GB). |
| EP-80 | 78.4 | 37.7 | 4.7 | <0.1 |
| EP-160 | 156.8 | 60.2 | 20.4 | <0.1 |
| EP-260 | 263.2 | 75.3 | 38.6 | 0.42 |
), ArticleFig(id=1309589372928876966, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Table2, caption=
Elemental analysis of asphalt with different softening points before and after oxidation
, figureFileSmall=null, figureFileBig=null, tableContent=
| Asphalt precursor | C w/% | H w/% | O w/% | C/H |
|---|
| EP-80 | 92.04 | 6.88 | 1.08 | 1.11 |
| EP-160 | 93.74 | 6.19 | 0.07 | 1.26 |
| EP-260 | 94.36 | 5.61 | 0.03 | 1.40 |
| EPO-80 | 76.05 | 3.39 | 20.56 | 1.87 |
| EPO-160 | 89.52 | 4.79 | 5.69 | 1.55 |
| EPO-260 | 72.02 | 2.79 | 25.19 | 2.15 |
), ArticleFig(id=1309589372995985831, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=表2, caption=
不同软化点沥青氧化前后元素分析
, figureFileSmall=null, figureFileBig=null, tableContent=
| Asphalt precursor | C w/% | H w/% | O w/% | C/H |
|---|
| EP-80 | 92.04 | 6.88 | 1.08 | 1.11 |
| EP-160 | 93.74 | 6.19 | 0.07 | 1.26 |
| EP-260 | 94.36 | 5.61 | 0.03 | 1.40 |
| EPO-80 | 76.05 | 3.39 | 20.56 | 1.87 |
| EPO-160 | 89.52 | 4.79 | 5.69 | 1.55 |
| EPO-260 | 72.02 | 2.79 | 25.19 | 2.15 |
), ArticleFig(id=1309589373067289000, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Table3, caption=
Structural parameters of pitch-derived carbon with different softening points
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | d002/Å | Lc/nm | N | $S_{{\mathrm{BET-(N_2)}}} $ /(m2·g−1) | Open pore $v_{{\mathrm{N_2}}} $ /(cm3·g−1) | Pore $d_{{\mathrm{N_2}}} $ /(nm) | Ture density ρHe /(g·cm−3) | Closed pore vHe /(g·cm−3) |
|---|
| Note: The d002, Lc and N were measured by XRD; the surface area, pore size and volume were determined from nitrogen sorption isotherms by BET and NLDFT methods; closed pore ν was measured by true density, respectively. |
| EPOC-80 | 3.99 | 1.23 | 3 | 16.7 | 0.0067 | 4.04 | 1.61 | 0.179 |
| EPOC-160 | 3.46 | 2.51 | 8 | 20.2 | 0.0081 | 4.20 | 1.87 | 0.092 |
| EPOC-260 | 3.89 | 1.43 | 4 | 3.2 | 0.0011 | 5.99 | 1.62 | 0.175 |
), ArticleFig(id=1309589373146980777, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=表3, caption=
不同软化点沥青衍生碳的结构参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | d002/Å | Lc/nm | N | $S_{{\mathrm{BET-(N_2)}}} $ /(m2·g−1) | Open pore $v_{{\mathrm{N_2}}} $ /(cm3·g−1) | Pore $d_{{\mathrm{N_2}}} $ /(nm) | Ture density ρHe /(g·cm−3) | Closed pore vHe /(g·cm−3) |
|---|
| Note: The d002, Lc and N were measured by XRD; the surface area, pore size and volume were determined from nitrogen sorption isotherms by BET and NLDFT methods; closed pore ν was measured by true density, respectively. |
| EPOC-80 | 3.99 | 1.23 | 3 | 16.7 | 0.0067 | 4.04 | 1.61 | 0.179 |
| EPOC-160 | 3.46 | 2.51 | 8 | 20.2 | 0.0081 | 4.20 | 1.87 | 0.092 |
| EPOC-260 | 3.89 | 1.43 | 4 | 3.2 | 0.0011 | 5.99 | 1.62 | 0.175 |
), ArticleFig(id=1309589373214089642, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=EN, label=Table4, caption=
Comparative analysis of recent related studies
, figureFileSmall=null, figureFileBig=null, tableContent=
| Precursor | Experimental method | Carbonization temperature/℃ | Reversible capacity/(mA·h·g−1) | Reference |
|---|
| Coal tar pitch | air pre-oxidation | 1400 | 300.6 | [7] |
| Isotropic pitch | oxygen pre-oxidation | 1400 | 312.7 | [10] |
| Cross-linked pitch | oxygen pre-oxidation | 1100 | 300.8 | [17] |
| Coal pitch | solvothermal oxidation | 1100 | 306.7 | [26] |
Key component of petroleum asphalt (THFI) | air pre-oxidation | 1400 | 309.7 | [27] |
), ArticleFig(id=1309589373306364331, tenantId=1146029695717560320, journalId=1308397254396182630, articleId=1309589360438239541, language=CN, label=表4, caption=
近期相关研究工作对比分析
, figureFileSmall=null, figureFileBig=null, tableContent=
| Precursor | Experimental method | Carbonization temperature/℃ | Reversible capacity/(mA·h·g−1) | Reference |
|---|
| Coal tar pitch | air pre-oxidation | 1400 | 300.6 | [7] |
| Isotropic pitch | oxygen pre-oxidation | 1400 | 312.7 | [10] |
| Cross-linked pitch | oxygen pre-oxidation | 1100 | 300.8 | [17] |
| Coal pitch | solvothermal oxidation | 1100 | 306.7 | [26] |
Key component of petroleum asphalt (THFI) | air pre-oxidation | 1400 | 309.7 | [27] |
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