Article(id=1322943542343115718, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942849381183980, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20210119, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1613923200000, receivedDateStr=2021-02-22, revisedDate=1616256000000, revisedDateStr=2021-03-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343919596, onlineDateStr=2026-10-30, pubDate=1634659200000, pubDateStr=2021-10-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343919596, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343919596, creator=13701087609, updateTime=1793343919596, updator=13701087609, issue=Issue{id=1322942849381183980, tenantId=1146029695717560320, journalId=1263187385517883426, year='2021', volume='49', issue='10', pageStart='2045', pageEnd='2312', issueExtLink='null', onlineDate='null', pubDate='1634659200000', pubDateStr='2021-10-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343754382, creator='13701087609', updateTime=1793345931656, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322951981580562527, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942849381183980, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322951981584756832, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942849381183980, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=2144, endPage=2153, ext={EN=ArticleExt(id=1322943542586385351, articleId=1322943542343115718, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Electrochemical Performance of Li1.2Mn0.54Co0.13Ni0.13O2 Cathode Materials Modified by NaH2PO2, columnId=null, journalTitle=Journal of the Chinese Ceramic Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Different amounts of NaH2PO2 were used to treat lithium-rich cathode materials. The results show that the material treated by 4% (in mass fraction) NaH2PO2 exhibits an excellent cycle stability with 85.3% of capacity retention after 150 cycles at 0.5 C and a high Coulombic efficiency. The enhanced electrochemical performance is attributed to the two following aspects. One aspect is that NaH2PO2 pyrolysis produces reducing PH3 gas, which reacts with the active oxygen in the surface layer of the lithium-rich cathode materials to yield oxygen vacancy, thus effectively reducing the irreversible capacity loss in the first charge process. Another is that NaH2PO2 pyrolysis treatment induces Na+ doping, which can effectively stabilize the lattice structure and inhibit phase transition, and accelerate Li+ diffusion and reduce the electrochemical impedance. In addition, the formed Na4P2O7 coating can protect the electrode material and reduce the dissolution of the transition metal, thereby improving the cycle stability.

, authors=Jun CAO, Yifan QU, Zeheng YANG, Zhangxian CHEN, Weixin ZHANG, authorsList=Jun CAO, Yifan QU, Zeheng YANG, Zhangxian CHEN, Weixin ZHANG, authorCompany=null, correspAuthors=Zeheng YANG, authorNote=

CAO Jun (1996-), male, Master candidate. E-mail:

, correspAuthorsNote=
YANG Zeheng (1961-), male, Ph.D., Professor. E-mail:
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采用不同物质的量的次亚磷酸钠对富锂正极材料进行改性处理,结果表明:采用4%(质量分数)的次亚磷酸钠改性处理的富锂正极材料表现出优异的循环稳定性,在0.5 C经过150圈循环后仍有85.3%的容量保持率,以及较高的首次Coulombic效率。材料优异的电化学性能一方面归因于次亚磷酸钠热解产生的还原性磷化氢气体与富锂正极材料表面活性氧反应产生氧空位,能够有效降低材料在首次充电过程中的不可逆容量损失;另一方面这一改性措施可以同时实现Na+掺杂,起到稳定晶格结构,抑制相转变的作用,并且能够增大晶胞间距,加快锂离子扩散,降低电化学阻抗。此外,次亚磷酸钠热解所形成的焦磷酸钠包覆层可以保护正极材料,减少过渡金属溶解,从而改善材料循环性能。

, authors=曹骏, 瞿翊帆, 杨则恒, 陈章贤, 张卫新, authorsList=曹骏, 瞿翊帆, 杨则恒, 陈章贤, 张卫新, authorCompany=null, correspAuthors=杨则恒, authorNote=

曹骏(1996—),男,硕士研究生。

, correspAuthorsNote=
杨则恒(1961—),男,博士,教授。
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NaH2PO2改性Li1.2Ni0.13Co0.13Mn0.54O2富锂正极材料的电化学性能
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曹骏 , 瞿翊帆 , 杨则恒 , 陈章贤 , 张卫新
硅酸盐学报 | 2021,49(10): 2144-2153
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硅酸盐学报 | 2021 , 49 (10) : 2144 -2153
NaH2PO2改性Li1.2Ni0.13Co0.13Mn0.54O2富锂正极材料的电化学性能
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曹骏 , 瞿翊帆, 杨则恒 , 陈章贤, 张卫新
作者信息
  • 合肥工业大学化学与化工学院,可控化学与材料化工安徽省重点实验室,合肥 230009
通讯作者:
杨则恒(1961—),男,博士,教授。
作者简介:

曹骏(1996—),男,硕士研究生。

Electrochemical Performance of Li1.2Mn0.54Co0.13Ni0.13O2 Cathode Materials Modified by NaH2PO2
Jun CAO , Yifan QU, Zeheng YANG , Zhangxian CHEN, Weixin ZHANG
Affiliations
  • School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory Controllable Chemistry Reaction Material Chemical Engineering, Hefei 230009, China
  • Corresponding Author:
    YANG Zeheng (1961-), male, Ph.D., Professor. E-mail:

    CAO Jun (1996-), male, Master candidate. E-mail:

出版时间: 2021-10-20 doi: 10.14062/j.issn.0454-5648.20210119
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采用不同物质的量的次亚磷酸钠对富锂正极材料进行改性处理,结果表明:采用4%(质量分数)的次亚磷酸钠改性处理的富锂正极材料表现出优异的循环稳定性,在0.5 C经过150圈循环后仍有85.3%的容量保持率,以及较高的首次Coulombic效率。材料优异的电化学性能一方面归因于次亚磷酸钠热解产生的还原性磷化氢气体与富锂正极材料表面活性氧反应产生氧空位,能够有效降低材料在首次充电过程中的不可逆容量损失;另一方面这一改性措施可以同时实现Na+掺杂,起到稳定晶格结构,抑制相转变的作用,并且能够增大晶胞间距,加快锂离子扩散,降低电化学阻抗。此外,次亚磷酸钠热解所形成的焦磷酸钠包覆层可以保护正极材料,减少过渡金属溶解,从而改善材料循环性能。

锂离子电池  /  富锂正极材料  /  次亚磷酸钠

Different amounts of NaH2PO2 were used to treat lithium-rich cathode materials. The results show that the material treated by 4% (in mass fraction) NaH2PO2 exhibits an excellent cycle stability with 85.3% of capacity retention after 150 cycles at 0.5 C and a high Coulombic efficiency. The enhanced electrochemical performance is attributed to the two following aspects. One aspect is that NaH2PO2 pyrolysis produces reducing PH3 gas, which reacts with the active oxygen in the surface layer of the lithium-rich cathode materials to yield oxygen vacancy, thus effectively reducing the irreversible capacity loss in the first charge process. Another is that NaH2PO2 pyrolysis treatment induces Na+ doping, which can effectively stabilize the lattice structure and inhibit phase transition, and accelerate Li+ diffusion and reduce the electrochemical impedance. In addition, the formed Na4P2O7 coating can protect the electrode material and reduce the dissolution of the transition metal, thereby improving the cycle stability.

lithium-ion battery  /  lithium-rich cathode material  /  sodium hypophosphite
曹骏, 瞿翊帆, 杨则恒, 陈章贤, 张卫新. NaH2PO2改性Li1.2Ni0.13Co0.13Mn0.54O2富锂正极材料的电化学性能. 硅酸盐学报, 2021 , 49 (10) : 2144 -2153 . DOI: 10.14062/j.issn.0454-5648.20210119
Jun CAO, Yifan QU, Zeheng YANG, Zhangxian CHEN, Weixin ZHANG. Electrochemical Performance of Li1.2Mn0.54Co0.13Ni0.13O2 Cathode Materials Modified by NaH2PO2[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (10) : 2144 -2153 . DOI: 10.14062/j.issn.0454-5648.20210119
  • 国家自然科学基金(91834301)
  • 安徽省科技重大专项(201903a05020021; 202003a05020046)
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2021年第49卷第10期
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doi: 10.14062/j.issn.0454-5648.20210119
  • 接收时间:2021-02-22
  • 首发时间:2026-10-30
  • 出版时间:2021-10-20
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  • 收稿日期:2021-02-22
  • 修回日期:2021-03-21
基金
国家自然科学基金(91834301)
安徽省科技重大专项(201903a05020021; 202003a05020046)
作者信息
    合肥工业大学化学与化工学院,可控化学与材料化工安徽省重点实验室,合肥 230009

通讯作者:

杨则恒(1961—),男,博士,教授。
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2种不同金属材料的力学参数
科
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属数
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genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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