Thickness-tunable polyimide nanoencapsulating layers and their influence on cell performance/thermal stability of high-voltage LiCoO2 cathode materials for lithium-ion batteries
We have previously demonstrated polyimide (PI) gel polymer electrolyte (GPE)-based nanoencapsulation as a new surface modification strategy for high-voltage cathode materials. In this study, in an endeavor to attain a more comprehensive understanding of the PI GPE-based surface modification, effects...
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| Veröffentlicht in: | Journal of power sources 2013-12, Vol.244, p.442-449 |
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| creator | Park, Jang-Hoon Cho, Ju-Hyun Lee, Eun-Ho Kim, Ju-Myung Lee, Sang-Young |
| description | We have previously demonstrated polyimide (PI) gel polymer electrolyte (GPE)-based nanoencapsulation as a new surface modification strategy for high-voltage cathode materials. In this study, in an endeavor to attain a more comprehensive understanding of the PI GPE-based surface modification, effects of structural variation of PI encapsulating layers (specifically, focusing on PI coating thickness) on cell performance and thermal stability of high-voltage (4.4 V) LiCoO2 are investigated. Herein, PI coating thickness is tuned between approximately 10 and 40 nm by varying polyamic acid (synthesized from pyromellitic dianhydride/oxydianiline) concentration of coating solutions. As PI coating thickness is increased, discharge C-rate capability of cells is deteriorated due to undesired rise of ionic and electronic resistance of thick PI coating layers. On the other hand, thick PI encapsulating layers are effective in mitigating interfacial exothermic reaction between delithiated LiCoO2 and liquid electrolyte. Notably, among the various PI coating thicknesses, average thickness of 10 nm imparts well-balanced enhancement in cell performance and thermal stability. These results demonstrate that structural fine-tuning (particularly, coating thickness) of PI encapsulating layers, acting as ion-conductive protective conformal thin films, plays a significant role in optimizing their beneficial coating effects on high voltage LiCoO2.
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► Thickness-tunable polyimide nanoencapsulating layer is introduced on LiCoO2 surface. ► Effect of PI coating thickness on high-voltage cell performance is explored. ► PI encapsulating layer is featured with nanometer-thick, large surface coverage. ► PI coating thickness of 10 nm imparts well-balanced coating effects on 4.4 V LiCoO2. ► Beneficial coating effects can be optimized by tuning PI coating thickness. |
| doi_str_mv | 10.1016/j.jpowsour.2012.11.111 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1513476436</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S037877531201796X</els_id><sourcerecordid>1513476436</sourcerecordid><originalsourceid>FETCH-LOGICAL-c412t-843e044461154141d0414780fd66e69c3e8e1311eb724c9ea9572131ade65a2a3</originalsourceid><addsrcrecordid>eNqFkc-K2zAQxk1poem2r1B0KfTirMaWLefWEvoPAnvZnsVEHsdKZcmV5C15rL5hZbLd68IgidHvm2HmK4r3wLfAob09b8-z_xP9ErYVh2oLkANeFBvoZF1WsmleFhtey66UsqlfF29iPHPOASTfFH_vR6N_OYqxTIvDoyU2e3sxk-mJOXSenMY5LhaTcSdm8UIhMnQ9SyOZwIwb7JIZYt4xTdaymcLgw4Q5d5uZ_LIsJjwaa9KF-YGN5jSWD94mPBE7mL2_q5jGNPrcccJEwaCNLNdgWTGaZSpNrn3EtH5RfFu8GjJA7x7vm-Ln1y_3--_l4e7bj_3nQ6kFVKnsRE1cCNECNAIE9DyfsuND37bU7nRNHUENQEdZCb0j3DWyygnsqW2wwvqm-HitOwf_e6GY1GTiOiE68ktU0EAtZCvqNqPtFdXBxxhoUHMwE4aLAq5Wj9RZ_fdIrR4pgByQhR8ee2DUaIeQt2bik7qSUjRSrtynK0d54AdDQUVt1q33JpBOqvfmuVb_ACfBr7o</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1513476436</pqid></control><display><type>article</type><title>Thickness-tunable polyimide nanoencapsulating layers and their influence on cell performance/thermal stability of high-voltage LiCoO2 cathode materials for lithium-ion batteries</title><source>Elsevier ScienceDirect Journals</source><creator>Park, Jang-Hoon ; Cho, Ju-Hyun ; Lee, Eun-Ho ; Kim, Ju-Myung ; Lee, Sang-Young</creator><creatorcontrib>Park, Jang-Hoon ; Cho, Ju-Hyun ; Lee, Eun-Ho ; Kim, Ju-Myung ; Lee, Sang-Young</creatorcontrib><description>We have previously demonstrated polyimide (PI) gel polymer electrolyte (GPE)-based nanoencapsulation as a new surface modification strategy for high-voltage cathode materials. In this study, in an endeavor to attain a more comprehensive understanding of the PI GPE-based surface modification, effects of structural variation of PI encapsulating layers (specifically, focusing on PI coating thickness) on cell performance and thermal stability of high-voltage (4.4 V) LiCoO2 are investigated. Herein, PI coating thickness is tuned between approximately 10 and 40 nm by varying polyamic acid (synthesized from pyromellitic dianhydride/oxydianiline) concentration of coating solutions. As PI coating thickness is increased, discharge C-rate capability of cells is deteriorated due to undesired rise of ionic and electronic resistance of thick PI coating layers. On the other hand, thick PI encapsulating layers are effective in mitigating interfacial exothermic reaction between delithiated LiCoO2 and liquid electrolyte. Notably, among the various PI coating thicknesses, average thickness of 10 nm imparts well-balanced enhancement in cell performance and thermal stability. These results demonstrate that structural fine-tuning (particularly, coating thickness) of PI encapsulating layers, acting as ion-conductive protective conformal thin films, plays a significant role in optimizing their beneficial coating effects on high voltage LiCoO2.
[Display omitted]
► Thickness-tunable polyimide nanoencapsulating layer is introduced on LiCoO2 surface. ► Effect of PI coating thickness on high-voltage cell performance is explored. ► PI encapsulating layer is featured with nanometer-thick, large surface coverage. ► PI coating thickness of 10 nm imparts well-balanced coating effects on 4.4 V LiCoO2. ► Beneficial coating effects can be optimized by tuning PI coating thickness.</description><identifier>ISSN: 0378-7753</identifier><identifier>EISSN: 1873-2755</identifier><identifier>DOI: 10.1016/j.jpowsour.2012.11.111</identifier><identifier>CODEN: JPSODZ</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Cathodes ; Coating ; Coating thickness ; Direct energy conversion and energy accumulation ; Electrical engineering. Electrical power engineering ; Electrical power engineering ; Electrochemical conversion: primary and secondary batteries, fuel cells ; Electrolytes ; Electrolytic cells ; Encapsulating ; Encapsulating layers ; Exact sciences and technology ; High-voltage cathode materials ; Lithium-ion batteries ; Materials ; Nanostructure ; Polyimide ; Polyimide resins ; Surface modification ; Thermal stability</subject><ispartof>Journal of power sources, 2013-12, Vol.244, p.442-449</ispartof><rights>2012 Elsevier B.V.</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c412t-843e044461154141d0414780fd66e69c3e8e1311eb724c9ea9572131ade65a2a3</citedby><cites>FETCH-LOGICAL-c412t-843e044461154141d0414780fd66e69c3e8e1311eb724c9ea9572131ade65a2a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S037877531201796X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>309,310,314,776,780,785,786,3537,23909,23910,25118,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27745771$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Park, Jang-Hoon</creatorcontrib><creatorcontrib>Cho, Ju-Hyun</creatorcontrib><creatorcontrib>Lee, Eun-Ho</creatorcontrib><creatorcontrib>Kim, Ju-Myung</creatorcontrib><creatorcontrib>Lee, Sang-Young</creatorcontrib><title>Thickness-tunable polyimide nanoencapsulating layers and their influence on cell performance/thermal stability of high-voltage LiCoO2 cathode materials for lithium-ion batteries</title><title>Journal of power sources</title><description>We have previously demonstrated polyimide (PI) gel polymer electrolyte (GPE)-based nanoencapsulation as a new surface modification strategy for high-voltage cathode materials. In this study, in an endeavor to attain a more comprehensive understanding of the PI GPE-based surface modification, effects of structural variation of PI encapsulating layers (specifically, focusing on PI coating thickness) on cell performance and thermal stability of high-voltage (4.4 V) LiCoO2 are investigated. Herein, PI coating thickness is tuned between approximately 10 and 40 nm by varying polyamic acid (synthesized from pyromellitic dianhydride/oxydianiline) concentration of coating solutions. As PI coating thickness is increased, discharge C-rate capability of cells is deteriorated due to undesired rise of ionic and electronic resistance of thick PI coating layers. On the other hand, thick PI encapsulating layers are effective in mitigating interfacial exothermic reaction between delithiated LiCoO2 and liquid electrolyte. Notably, among the various PI coating thicknesses, average thickness of 10 nm imparts well-balanced enhancement in cell performance and thermal stability. These results demonstrate that structural fine-tuning (particularly, coating thickness) of PI encapsulating layers, acting as ion-conductive protective conformal thin films, plays a significant role in optimizing their beneficial coating effects on high voltage LiCoO2.
[Display omitted]
► Thickness-tunable polyimide nanoencapsulating layer is introduced on LiCoO2 surface. ► Effect of PI coating thickness on high-voltage cell performance is explored. ► PI encapsulating layer is featured with nanometer-thick, large surface coverage. ► PI coating thickness of 10 nm imparts well-balanced coating effects on 4.4 V LiCoO2. ► Beneficial coating effects can be optimized by tuning PI coating thickness.</description><subject>Applied sciences</subject><subject>Cathodes</subject><subject>Coating</subject><subject>Coating thickness</subject><subject>Direct energy conversion and energy accumulation</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical power engineering</subject><subject>Electrochemical conversion: primary and secondary batteries, fuel cells</subject><subject>Electrolytes</subject><subject>Electrolytic cells</subject><subject>Encapsulating</subject><subject>Encapsulating layers</subject><subject>Exact sciences and technology</subject><subject>High-voltage cathode materials</subject><subject>Lithium-ion batteries</subject><subject>Materials</subject><subject>Nanostructure</subject><subject>Polyimide</subject><subject>Polyimide resins</subject><subject>Surface modification</subject><subject>Thermal stability</subject><issn>0378-7753</issn><issn>1873-2755</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkc-K2zAQxk1poem2r1B0KfTirMaWLefWEvoPAnvZnsVEHsdKZcmV5C15rL5hZbLd68IgidHvm2HmK4r3wLfAob09b8-z_xP9ErYVh2oLkANeFBvoZF1WsmleFhtey66UsqlfF29iPHPOASTfFH_vR6N_OYqxTIvDoyU2e3sxk-mJOXSenMY5LhaTcSdm8UIhMnQ9SyOZwIwb7JIZYt4xTdaymcLgw4Q5d5uZ_LIsJjwaa9KF-YGN5jSWD94mPBE7mL2_q5jGNPrcccJEwaCNLNdgWTGaZSpNrn3EtH5RfFu8GjJA7x7vm-Ln1y_3--_l4e7bj_3nQ6kFVKnsRE1cCNECNAIE9DyfsuND37bU7nRNHUENQEdZCb0j3DWyygnsqW2wwvqm-HitOwf_e6GY1GTiOiE68ktU0EAtZCvqNqPtFdXBxxhoUHMwE4aLAq5Wj9RZ_fdIrR4pgByQhR8ee2DUaIeQt2bik7qSUjRSrtynK0d54AdDQUVt1q33JpBOqvfmuVb_ACfBr7o</recordid><startdate>20131215</startdate><enddate>20131215</enddate><creator>Park, Jang-Hoon</creator><creator>Cho, Ju-Hyun</creator><creator>Lee, Eun-Ho</creator><creator>Kim, Ju-Myung</creator><creator>Lee, Sang-Young</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7SR</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20131215</creationdate><title>Thickness-tunable polyimide nanoencapsulating layers and their influence on cell performance/thermal stability of high-voltage LiCoO2 cathode materials for lithium-ion batteries</title><author>Park, Jang-Hoon ; Cho, Ju-Hyun ; Lee, Eun-Ho ; Kim, Ju-Myung ; Lee, Sang-Young</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c412t-843e044461154141d0414780fd66e69c3e8e1311eb724c9ea9572131ade65a2a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Applied sciences</topic><topic>Cathodes</topic><topic>Coating</topic><topic>Coating thickness</topic><topic>Direct energy conversion and energy accumulation</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electrical power engineering</topic><topic>Electrochemical conversion: primary and secondary batteries, fuel cells</topic><topic>Electrolytes</topic><topic>Electrolytic cells</topic><topic>Encapsulating</topic><topic>Encapsulating layers</topic><topic>Exact sciences and technology</topic><topic>High-voltage cathode materials</topic><topic>Lithium-ion batteries</topic><topic>Materials</topic><topic>Nanostructure</topic><topic>Polyimide</topic><topic>Polyimide resins</topic><topic>Surface modification</topic><topic>Thermal stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Park, Jang-Hoon</creatorcontrib><creatorcontrib>Cho, Ju-Hyun</creatorcontrib><creatorcontrib>Lee, Eun-Ho</creatorcontrib><creatorcontrib>Kim, Ju-Myung</creatorcontrib><creatorcontrib>Lee, Sang-Young</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of power sources</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Park, Jang-Hoon</au><au>Cho, Ju-Hyun</au><au>Lee, Eun-Ho</au><au>Kim, Ju-Myung</au><au>Lee, Sang-Young</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thickness-tunable polyimide nanoencapsulating layers and their influence on cell performance/thermal stability of high-voltage LiCoO2 cathode materials for lithium-ion batteries</atitle><jtitle>Journal of power sources</jtitle><date>2013-12-15</date><risdate>2013</risdate><volume>244</volume><spage>442</spage><epage>449</epage><pages>442-449</pages><issn>0378-7753</issn><eissn>1873-2755</eissn><coden>JPSODZ</coden><abstract>We have previously demonstrated polyimide (PI) gel polymer electrolyte (GPE)-based nanoencapsulation as a new surface modification strategy for high-voltage cathode materials. In this study, in an endeavor to attain a more comprehensive understanding of the PI GPE-based surface modification, effects of structural variation of PI encapsulating layers (specifically, focusing on PI coating thickness) on cell performance and thermal stability of high-voltage (4.4 V) LiCoO2 are investigated. Herein, PI coating thickness is tuned between approximately 10 and 40 nm by varying polyamic acid (synthesized from pyromellitic dianhydride/oxydianiline) concentration of coating solutions. As PI coating thickness is increased, discharge C-rate capability of cells is deteriorated due to undesired rise of ionic and electronic resistance of thick PI coating layers. On the other hand, thick PI encapsulating layers are effective in mitigating interfacial exothermic reaction between delithiated LiCoO2 and liquid electrolyte. Notably, among the various PI coating thicknesses, average thickness of 10 nm imparts well-balanced enhancement in cell performance and thermal stability. These results demonstrate that structural fine-tuning (particularly, coating thickness) of PI encapsulating layers, acting as ion-conductive protective conformal thin films, plays a significant role in optimizing their beneficial coating effects on high voltage LiCoO2.
[Display omitted]
► Thickness-tunable polyimide nanoencapsulating layer is introduced on LiCoO2 surface. ► Effect of PI coating thickness on high-voltage cell performance is explored. ► PI encapsulating layer is featured with nanometer-thick, large surface coverage. ► PI coating thickness of 10 nm imparts well-balanced coating effects on 4.4 V LiCoO2. ► Beneficial coating effects can be optimized by tuning PI coating thickness.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jpowsour.2012.11.111</doi><tpages>8</tpages></addata></record> |
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| ispartof | Journal of power sources, 2013-12, Vol.244, p.442-449 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Cathodes Coating Coating thickness Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Electrolytes Electrolytic cells Encapsulating Encapsulating layers Exact sciences and technology High-voltage cathode materials Lithium-ion batteries Materials Nanostructure Polyimide Polyimide resins Surface modification Thermal stability |
| title | Thickness-tunable polyimide nanoencapsulating layers and their influence on cell performance/thermal stability of high-voltage LiCoO2 cathode materials for lithium-ion batteries |
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