Effects of titanium incorporation on phase and electrochemical performance in LiFePO4 cathode material
► Nominal LiFe1−xTixPO4 cathode materials were synthesized via solid-state reaction. ► A clear feature of Ti-doped LiFePO4 has been clarified. ► The formation of impurity phases strongly depends on Ti doping level. ► Appropriate amount of Ti in LiFePO4 can enhance the electrochemical performance. Ti...
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| Veröffentlicht in: | Electrochimica acta 2012-09, Vol.78, p.576-584 |
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| creator | Wang, Zhao-Hui Pang, Quan-Quan Deng, Ke-Jian Yuan, Li-Xia Huang, Fei Peng, Yun-Long Huang, Yun-Hui |
| description | ► Nominal LiFe1−xTixPO4 cathode materials were synthesized via solid-state reaction. ► A clear feature of Ti-doped LiFePO4 has been clarified. ► The formation of impurity phases strongly depends on Ti doping level. ► Appropriate amount of Ti in LiFePO4 can enhance the electrochemical performance.
Ti-incorporated LiFe1−xTixPO4 (0≤x≤0.2) samples have been prepared via a two-step solid-state reaction route. The samples have systematically been investigated with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, scanning electron microscope (SEM), transmission electron microscope (TEM), cyclic voltammetry (CV) and charge/discharge measurements. The incorporation of Ti in LiFePO4 significantly enhances the electrochemical performance; the carbon-coated LiFe0.9Ti0.1PO4 sample shows the best performance. It is confirmed that LiFe1−xTixPO4 with x≤0.05 are of single phase while those with 0.07≤x≤0.2 contain impurity phases: LiTi2(PO4)3 and TiP2O7. The impurities influence not only the electronic conductivity, but also the total specific capacity. Appropriate amount of titanium incorporation is favorable for the improvement in electrochemical performance. |
| doi_str_mv | 10.1016/j.electacta.2012.06.067 |
| format | Article |
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Ti-incorporated LiFe1−xTixPO4 (0≤x≤0.2) samples have been prepared via a two-step solid-state reaction route. The samples have systematically been investigated with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, scanning electron microscope (SEM), transmission electron microscope (TEM), cyclic voltammetry (CV) and charge/discharge measurements. The incorporation of Ti in LiFePO4 significantly enhances the electrochemical performance; the carbon-coated LiFe0.9Ti0.1PO4 sample shows the best performance. It is confirmed that LiFe1−xTixPO4 with x≤0.05 are of single phase while those with 0.07≤x≤0.2 contain impurity phases: LiTi2(PO4)3 and TiP2O7. The impurities influence not only the electronic conductivity, but also the total specific capacity. Appropriate amount of titanium incorporation is favorable for the improvement in electrochemical performance.</description><identifier>ISSN: 0013-4686</identifier><identifier>EISSN: 1873-3859</identifier><identifier>DOI: 10.1016/j.electacta.2012.06.067</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Cathode ; Diffraction ; Electrochemical performance ; Impurities ; Lithium iron phosphate ; Lithium-ion batteries ; Performance enhancement ; Phase (cyclic) ; Scanning electron microscopy ; Titanium ; Titanium incorporation ; X-ray photoelectron spectroscopy ; X-rays</subject><ispartof>Electrochimica acta, 2012-09, Vol.78, p.576-584</ispartof><rights>2012 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c278t-4c7ef2015f044adee7924fb8a25c2cc6c1332b98deedd0e2665be3f9c59caae33</citedby><cites>FETCH-LOGICAL-c278t-4c7ef2015f044adee7924fb8a25c2cc6c1332b98deedd0e2665be3f9c59caae33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.electacta.2012.06.067$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,782,786,3552,27931,27932,46002</link.rule.ids></links><search><creatorcontrib>Wang, Zhao-Hui</creatorcontrib><creatorcontrib>Pang, Quan-Quan</creatorcontrib><creatorcontrib>Deng, Ke-Jian</creatorcontrib><creatorcontrib>Yuan, Li-Xia</creatorcontrib><creatorcontrib>Huang, Fei</creatorcontrib><creatorcontrib>Peng, Yun-Long</creatorcontrib><creatorcontrib>Huang, Yun-Hui</creatorcontrib><title>Effects of titanium incorporation on phase and electrochemical performance in LiFePO4 cathode material</title><title>Electrochimica acta</title><description>► Nominal LiFe1−xTixPO4 cathode materials were synthesized via solid-state reaction. ► A clear feature of Ti-doped LiFePO4 has been clarified. ► The formation of impurity phases strongly depends on Ti doping level. ► Appropriate amount of Ti in LiFePO4 can enhance the electrochemical performance.
Ti-incorporated LiFe1−xTixPO4 (0≤x≤0.2) samples have been prepared via a two-step solid-state reaction route. The samples have systematically been investigated with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, scanning electron microscope (SEM), transmission electron microscope (TEM), cyclic voltammetry (CV) and charge/discharge measurements. The incorporation of Ti in LiFePO4 significantly enhances the electrochemical performance; the carbon-coated LiFe0.9Ti0.1PO4 sample shows the best performance. It is confirmed that LiFe1−xTixPO4 with x≤0.05 are of single phase while those with 0.07≤x≤0.2 contain impurity phases: LiTi2(PO4)3 and TiP2O7. The impurities influence not only the electronic conductivity, but also the total specific capacity. Appropriate amount of titanium incorporation is favorable for the improvement in electrochemical performance.</description><subject>Cathode</subject><subject>Diffraction</subject><subject>Electrochemical performance</subject><subject>Impurities</subject><subject>Lithium iron phosphate</subject><subject>Lithium-ion batteries</subject><subject>Performance enhancement</subject><subject>Phase (cyclic)</subject><subject>Scanning electron microscopy</subject><subject>Titanium</subject><subject>Titanium incorporation</subject><subject>X-ray photoelectron spectroscopy</subject><subject>X-rays</subject><issn>0013-4686</issn><issn>1873-3859</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFkE9r3DAQxUVJoZukn6E65mJXf2zJPoaQbQsL20NzFrPjEavFtlzJW-i3jzYbei38YA7z3gzvMfZFiloKab6eahoJVyjUSkhVC1OwH9hGdlZXumv7G7YRQuqqMZ35xG5zPgkhrLFiw_yz98WdefR8DSvM4TzxMGNMS0ywhjjzwnKETBzmgb_9ShGPNAWEkS-UfEwTzEjFxndhSz_3DUdYj3EgPsFKKcB4zz56GDN9fp937GX7_Ovpe7Xbf_vx9LirUNlurRq05EuI1oumgYHI9qrxhw5UiwrRoNRaHfqubIZBkDKmPZD2PbY9ApDWd-zhendJ8feZ8uqmkJHGEWaK5-yk6JSS2uquSO1ViinmnMi7JYUJ0t8icpdm3cn9a9ZdmnXCFGxxPl6dVJL8CZRcxkClgSGkondDDP-98Qqd4IiI</recordid><startdate>20120901</startdate><enddate>20120901</enddate><creator>Wang, Zhao-Hui</creator><creator>Pang, Quan-Quan</creator><creator>Deng, Ke-Jian</creator><creator>Yuan, Li-Xia</creator><creator>Huang, Fei</creator><creator>Peng, Yun-Long</creator><creator>Huang, Yun-Hui</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20120901</creationdate><title>Effects of titanium incorporation on phase and electrochemical performance in LiFePO4 cathode material</title><author>Wang, Zhao-Hui ; Pang, Quan-Quan ; Deng, Ke-Jian ; Yuan, Li-Xia ; Huang, Fei ; Peng, Yun-Long ; Huang, Yun-Hui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c278t-4c7ef2015f044adee7924fb8a25c2cc6c1332b98deedd0e2665be3f9c59caae33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Cathode</topic><topic>Diffraction</topic><topic>Electrochemical performance</topic><topic>Impurities</topic><topic>Lithium iron phosphate</topic><topic>Lithium-ion batteries</topic><topic>Performance enhancement</topic><topic>Phase (cyclic)</topic><topic>Scanning electron microscopy</topic><topic>Titanium</topic><topic>Titanium incorporation</topic><topic>X-ray photoelectron spectroscopy</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Zhao-Hui</creatorcontrib><creatorcontrib>Pang, Quan-Quan</creatorcontrib><creatorcontrib>Deng, Ke-Jian</creatorcontrib><creatorcontrib>Yuan, Li-Xia</creatorcontrib><creatorcontrib>Huang, Fei</creatorcontrib><creatorcontrib>Peng, Yun-Long</creatorcontrib><creatorcontrib>Huang, Yun-Hui</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Electrochimica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Zhao-Hui</au><au>Pang, Quan-Quan</au><au>Deng, Ke-Jian</au><au>Yuan, Li-Xia</au><au>Huang, Fei</au><au>Peng, Yun-Long</au><au>Huang, Yun-Hui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of titanium incorporation on phase and electrochemical performance in LiFePO4 cathode material</atitle><jtitle>Electrochimica acta</jtitle><date>2012-09-01</date><risdate>2012</risdate><volume>78</volume><spage>576</spage><epage>584</epage><pages>576-584</pages><issn>0013-4686</issn><eissn>1873-3859</eissn><abstract>► Nominal LiFe1−xTixPO4 cathode materials were synthesized via solid-state reaction. ► A clear feature of Ti-doped LiFePO4 has been clarified. ► The formation of impurity phases strongly depends on Ti doping level. ► Appropriate amount of Ti in LiFePO4 can enhance the electrochemical performance.
Ti-incorporated LiFe1−xTixPO4 (0≤x≤0.2) samples have been prepared via a two-step solid-state reaction route. The samples have systematically been investigated with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, scanning electron microscope (SEM), transmission electron microscope (TEM), cyclic voltammetry (CV) and charge/discharge measurements. The incorporation of Ti in LiFePO4 significantly enhances the electrochemical performance; the carbon-coated LiFe0.9Ti0.1PO4 sample shows the best performance. It is confirmed that LiFe1−xTixPO4 with x≤0.05 are of single phase while those with 0.07≤x≤0.2 contain impurity phases: LiTi2(PO4)3 and TiP2O7. The impurities influence not only the electronic conductivity, but also the total specific capacity. Appropriate amount of titanium incorporation is favorable for the improvement in electrochemical performance.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.electacta.2012.06.067</doi><tpages>9</tpages></addata></record> |
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| subjects | Cathode Diffraction Electrochemical performance Impurities Lithium iron phosphate Lithium-ion batteries Performance enhancement Phase (cyclic) Scanning electron microscopy Titanium Titanium incorporation X-ray photoelectron spectroscopy X-rays |
| title | Effects of titanium incorporation on phase and electrochemical performance in LiFePO4 cathode material |
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