Article(id=1195319921535127708, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195319920000012443, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20240064, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1762916077264, onlineDateStr=2025-11-12, pubDate=1739980800000, pubDateStr=2025-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762916077264, onlineIssueDateStr=2025-11-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762916077264, creator=13701087609, updateTime=1762916077264, updator=13701087609, issue=Issue{id=1195319920000012443, tenantId=1146029695717560320, journalId=1189873562199433220, year='2025', volume='', issue='2', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762916076894, creator=13701087609, updateTime=1762916415896, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1195321341915205752, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195319920000012443, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1195321341915205753, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195319920000012443, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1, endPage=5, ext={EN=ArticleExt(id=1195319921849700510, articleId=1195319921535127708, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=ICP -OES Method for Determining the Uncertainty of Nickel, Cobalt and Manganese Content in Ternary Lithium Battery Cathode Materials, columnId=1190284220686766583, journalTitle=Automobile Technology & Material, columnName=Original article, runingTitle=null, highlight=null, articleAbstract=
In order to improve quality and performance of battery material, and address the battery safety issue, the contents of nickel, cobalt and manganese elements in the cathode materials of ternary lithium batteries are accurately determined by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES), and the uncertainty in the measurement process is systematically evaluated according to the standard of JJF 1059.1—2012 “Evaluation and Representation of Measurement Uncertainty”. The uncertainty factors that may be introduced in each part of the test are deeply analyzed, and these uncertainties are carefully quantified and calculated. When the nickel content of the sample is 5.521 μg/mL, the extended uncertainty is U95(Ni)=0.013 1 mg/kg. When the content of cobalt is 3.566 μg/mL, the extended uncertainty is U95(Co)=0.011 8 mg/kg; when the manganese content is 2.102 μg/mL, the extended uncertainty is U95(Mn)=0.013 1 mg/kg. Finally, the synthetic uncertainty of nickel is u(Ni)=0.006 6 mg/kg, the extended uncertainty of cobalt is u(Co)=0.005 9 mg/kg, and the extended uncertainty of manganese is u(Mn)=0.006 5 mg/kg.
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为提升电池材料质量和性能,解决电池安全问题,利用电感耦合等离子体光谱法(ICP-OES)对三元锂电池正极材料中的镍、钴、锰元素含量进行了精确测定,依据JJF 1059.1—2012《测量不确定度评定与表示》,对测量过程中的不确定度进行了系统性评估,并深入剖析了试验各环节可能引入的不确定度因素,针对各种不确定度进行了细致的量化和计算。当镍含量为5.521 μg/mL时,其扩展不确定度U95(Ni)=0.013 1 mg/kg;当钴含量为3.566 μg/mL时,其扩展不确定度U95(Co)=0.011 8 mg/kg;当锰含量为2.102 μg/mL时,其扩展不确定度U95(Mn)=0.013 1 mg/kg。最终计算得出镍的合成不确定度u(Ni)=0.006 6 mg/kg,钴的合成不确定度u(Co)=0.005 9 mg/kg,锰的合成不确定度u(Mn)=0.006 5 mg/kg。
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田二丽(1994—),女,硕士学位,研究方向为化学工程。
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田二丽(1994—),女,硕士学位,研究方向为化学工程。
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54(3): 45-48., articleTitle=ICP法测定铁矿石中铅、锌、砷含量的不确定度评定, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1195335648447082961, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, xref=null, ext=[AuthorCompanyExt(id=1195335648451277266, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, companyId=1195335648447082961, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Global R&D Center, China FAW Corporation Limited, Changchun 130013), AuthorCompanyExt(id=1195335648459665875, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, companyId=1195335648447082961, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中国第一汽车股份有限公司研发总院, 长春 130013)])], figs=[ArticleFig(id=1195335650691035642, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=EN, label=null, caption=null, figureFileSmall=8DTuKaQ5OOezdW1w2wuNkw==, figureFileBig=zb/j5eRHWTQz3LOX490peg==, tableContent=null), ArticleFig(id=1195335650745561595, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=CN, label=图1, caption=
不确定度来源, figureFileSmall=8DTuKaQ5OOezdW1w2wuNkw==, figureFileBig=zb/j5eRHWTQz3LOX490peg==, tableContent=null), ArticleFig(id=1195335650829447676, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=EN, label=null, caption=null, figureFileSmall=A2eHBSZCSlQMtBaJIPT+Ag==, figureFileBig=+Q0LJUN3rG4yLEkeoVHp1A==, tableContent=null), ArticleFig(id=1195335650904945149, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=CN, label=图2, caption=
各因素引入的不确定度分量, figureFileSmall=A2eHBSZCSlQMtBaJIPT+Ag==, figureFileBig=+Q0LJUN3rG4yLEkeoVHp1A==, tableContent=null), ArticleFig(id=1195335650988831230, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 测定元素 | 拟合标准曲线方程 | 相关系数 |
| Ni | Y=76 596.612X-702.515 | 0.999 5 |
| Co | Y=400 897.999 5X+1 605.147 | 0.999 8 |
| Mn | Y=4 141 556.436X-121 984.066 9 | 0.999 6 |
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标准曲线方程及相关系数
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| 测定元素 | 拟合标准曲线方程 | 相关系数 |
| Ni | Y=76 596.612X-702.515 | 0.999 5 |
| Co | Y=400 897.999 5X+1 605.147 | 0.999 8 |
| Mn | Y=4 141 556.436X-121 984.066 9 | 0.999 6 |
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| 测定次数 | Ni含量 /mg·L-1 | Co含量 /mg·L-1 | Mn含量 /mg·L-1 |
| 1 | 5.496 | 3.532 | 2.087 |
| 2 | 5.500 | 3.532 | 2.090 |
| 3 | 5.502 | 3.548 | 2.093 |
| 4 | 5.506 | 3.550 | 2.094 |
| 5 | 5.519 | 3.560 | 2.099 |
| 6 | 5.522 | 3.569 | 2.100 |
| 7 | 5.527 | 3.581 | 2.104 |
| 8 | 5.531 | 3.581 | 2.106 |
| 9 | 5.531 | 3.589 | 2.110 |
| 10 | 5.539 | 3.592 | 2.113 |
| 11 | 5.563 | 3.594 | 2.121 |
| 平均值 | 5.521 | 3.566 | 2.102 |
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镍、钴、锰含量测定结果
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| 测定次数 | Ni含量 /mg·L-1 | Co含量 /mg·L-1 | Mn含量 /mg·L-1 |
| 1 | 5.496 | 3.532 | 2.087 |
| 2 | 5.500 | 3.532 | 2.090 |
| 3 | 5.502 | 3.548 | 2.093 |
| 4 | 5.506 | 3.550 | 2.094 |
| 5 | 5.519 | 3.560 | 2.099 |
| 6 | 5.522 | 3.569 | 2.100 |
| 7 | 5.527 | 3.581 | 2.104 |
| 8 | 5.531 | 3.581 | 2.106 |
| 9 | 5.531 | 3.589 | 2.110 |
| 10 | 5.539 | 3.592 | 2.113 |
| 11 | 5.563 | 3.594 | 2.121 |
| 平均值 | 5.521 | 3.566 | 2.102 |
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| 测定元素 | s(y) | u(x) | urel(x) |
| Ni | 4 902.063 | 0.024 5 | 0.004 0 |
| Co | 46 277.174 | 0.042 3 | 0.012 0 |
| Mn | 616 779.737 | 0.060 2 | 0.029 0 |
), ArticleFig(id=1195335651320181251, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=CN, label=表3, caption=
标准曲线拟合引入的相对标准不确定度
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| 测定元素 | s(y) | u(x) | urel(x) |
| Ni | 4 902.063 | 0.024 5 | 0.004 0 |
| Co | 46 277.174 | 0.042 3 | 0.012 0 |
| Mn | 616 779.737 | 0.060 2 | 0.029 0 |
), ArticleFig(id=1195335651395678724, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 测定元素 | s(x) | u(r) | urel(r) |
| Ni | 0.020 0 | 0.006 0 | 0.001 1 |
| Co | 0.023 2 | 0.007 0 | 0.002 0 |
| Mn | 0.010 5 | 0.003 2 | 0.001 5 |
), ArticleFig(id=1195335651458593285, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=CN, label=表4, caption=
重复性引入的相对标准不确定度
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| 测定元素 | s(x) | u(r) | urel(r) |
| Ni | 0.020 0 | 0.006 0 | 0.001 1 |
| Co | 0.023 2 | 0.007 0 | 0.002 0 |
| Mn | 0.010 5 | 0.003 2 | 0.001 5 |
), ArticleFig(id=1195335651534090758, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 元素 | 合成标准不确定度urel /mg·kg-1 | 含量W /mg·kg-1 | 扩展 不确定度 U95/mg·kg-1 | 不确定度评定结果 /mg·kg-1 |
| Ni | 0.006 6 | 0.552 1 | 0.013 1 | 0.552 1±0.013 1 |
| Co | 0.005 9 | 0.356 6 | 0.011 8 | 0.356 6±0.011 8 |
| Mn | 0.006 5 | 0.210 2 | 0.013 1 | 0.210 2±0.013 1 |
), ArticleFig(id=1195335651609588231, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319921535127708, language=CN, label=表5, caption=
不确定度评定结果
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| 元素 | 合成标准不确定度urel /mg·kg-1 | 含量W /mg·kg-1 | 扩展 不确定度 U95/mg·kg-1 | 不确定度评定结果 /mg·kg-1 |
| Ni | 0.006 6 | 0.552 1 | 0.013 1 | 0.552 1±0.013 1 |
| Co | 0.005 9 | 0.356 6 | 0.011 8 | 0.356 6±0.011 8 |
| Mn | 0.006 5 | 0.210 2 | 0.013 1 | 0.210 2±0.013 1 |
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