Titanium-based nanorods/ketjen black modified separator as polysulfides barrier for lithium sulfur cell
The practical application of lithium sulfur (Li/S) cells is mainly hindered by the shuttle effect. Herein, the titanium-based nanorods/ketjen black (KB) composite prepared by a facile hydrothermal reaction is deposited on polypropylene to fabricate a bi-functional separator (KTO-2/PP) for Li/S cell....
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| Veröffentlicht in: | Journal of alloys and compounds 2020-11, Vol.842, p.155830, Article 155830 |
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| container_title | Journal of alloys and compounds |
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| creator | Wan, Yonghua Ma, Xinxin Hao, Junwei Min, Huihua You, Hairui Liu, Xiaomin Yang, Hui |
| description | The practical application of lithium sulfur (Li/S) cells is mainly hindered by the shuttle effect. Herein, the titanium-based nanorods/ketjen black (KB) composite prepared by a facile hydrothermal reaction is deposited on polypropylene to fabricate a bi-functional separator (KTO-2/PP) for Li/S cell. Using bare sublimed sulfur cathode, the cell based on KTO-2/PP separator exhibits excellent rate capability, delivering 1122, 856, and 566 mAh g−1 at 0.2, 1 and 2C, respectively. Moreover, the reversible capacity of the KTO-2/PP based cell can reach 754 mAh g−1 (1C) in the 200th cycle. Such performance boost is primarily ascribed to the KTO-2/PP separator, that Li+ is allowed to pass through but lithium polysulfides (LiPS) is shielded against shuttle. The conductive KB facilitates electron transport and adsorbs LiPS physically. The titanium-based nanorods adsorbs LiPS chemically by forming Ti–S bond which is confirmed by XPS analysis. Regarding the aged Li/S cell using KTO-2/PP, the smooth surface of PP (facing lithium anode) and the less sediment and negligible corrosion on anode indicate that the KTO-2/PP separator acts as an efficient barrier to inhibit the LiPS migration and enhances the electrochemical performance.
[Display omitted]
•KTO-2/PP prepared via a hydrothermal method is employed as bi-functional separator.•The strong chemical adsorption of KTO-2 to LiPS is proved by XPS analysis.•KTO-2/PP based cell presents 1122 and 856 mAh g−1 at 0.2 and 1C, respectively.•KTO-2/PP based cell remains 754 mAh g−1 after 200 cycles at 1C.•Little sediments are found on the lithium anode for aged KTO-2/PP based cell. |
| doi_str_mv | 10.1016/j.jallcom.2020.155830 |
| format | Article |
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[Display omitted]
•KTO-2/PP prepared via a hydrothermal method is employed as bi-functional separator.•The strong chemical adsorption of KTO-2 to LiPS is proved by XPS analysis.•KTO-2/PP based cell presents 1122 and 856 mAh g−1 at 0.2 and 1C, respectively.•KTO-2/PP based cell remains 754 mAh g−1 after 200 cycles at 1C.•Little sediments are found on the lithium anode for aged KTO-2/PP based cell.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2020.155830</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Anodes ; Bi-functional separator ; Electrochemical analysis ; Electron transport ; Hydrothermal method ; Hydrothermal reactions ; Ketjen black ; Li/S cell ; Lithium sulfur batteries ; Nanorods ; Polysulfides ; Separators ; Titanium ; Titanium-based nanorods ; X ray photoelectron spectroscopy</subject><ispartof>Journal of alloys and compounds, 2020-11, Vol.842, p.155830, Article 155830</ispartof><rights>2020 Elsevier B.V.</rights><rights>Copyright Elsevier BV Nov 25, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-b205a86e5d8f4a45a7d2ecc2491458789ae96adebf9d98947f503bc64eb6de563</citedby><cites>FETCH-LOGICAL-c337t-b205a86e5d8f4a45a7d2ecc2491458789ae96adebf9d98947f503bc64eb6de563</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0925838820321940$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27903,27904,65308</link.rule.ids></links><search><creatorcontrib>Wan, Yonghua</creatorcontrib><creatorcontrib>Ma, Xinxin</creatorcontrib><creatorcontrib>Hao, Junwei</creatorcontrib><creatorcontrib>Min, Huihua</creatorcontrib><creatorcontrib>You, Hairui</creatorcontrib><creatorcontrib>Liu, Xiaomin</creatorcontrib><creatorcontrib>Yang, Hui</creatorcontrib><title>Titanium-based nanorods/ketjen black modified separator as polysulfides barrier for lithium sulfur cell</title><title>Journal of alloys and compounds</title><description>The practical application of lithium sulfur (Li/S) cells is mainly hindered by the shuttle effect. Herein, the titanium-based nanorods/ketjen black (KB) composite prepared by a facile hydrothermal reaction is deposited on polypropylene to fabricate a bi-functional separator (KTO-2/PP) for Li/S cell. Using bare sublimed sulfur cathode, the cell based on KTO-2/PP separator exhibits excellent rate capability, delivering 1122, 856, and 566 mAh g−1 at 0.2, 1 and 2C, respectively. Moreover, the reversible capacity of the KTO-2/PP based cell can reach 754 mAh g−1 (1C) in the 200th cycle. Such performance boost is primarily ascribed to the KTO-2/PP separator, that Li+ is allowed to pass through but lithium polysulfides (LiPS) is shielded against shuttle. The conductive KB facilitates electron transport and adsorbs LiPS physically. The titanium-based nanorods adsorbs LiPS chemically by forming Ti–S bond which is confirmed by XPS analysis. Regarding the aged Li/S cell using KTO-2/PP, the smooth surface of PP (facing lithium anode) and the less sediment and negligible corrosion on anode indicate that the KTO-2/PP separator acts as an efficient barrier to inhibit the LiPS migration and enhances the electrochemical performance.
[Display omitted]
•KTO-2/PP prepared via a hydrothermal method is employed as bi-functional separator.•The strong chemical adsorption of KTO-2 to LiPS is proved by XPS analysis.•KTO-2/PP based cell presents 1122 and 856 mAh g−1 at 0.2 and 1C, respectively.•KTO-2/PP based cell remains 754 mAh g−1 after 200 cycles at 1C.•Little sediments are found on the lithium anode for aged KTO-2/PP based cell.</description><subject>Anodes</subject><subject>Bi-functional separator</subject><subject>Electrochemical analysis</subject><subject>Electron transport</subject><subject>Hydrothermal method</subject><subject>Hydrothermal reactions</subject><subject>Ketjen black</subject><subject>Li/S cell</subject><subject>Lithium sulfur batteries</subject><subject>Nanorods</subject><subject>Polysulfides</subject><subject>Separators</subject><subject>Titanium</subject><subject>Titanium-based nanorods</subject><subject>X ray photoelectron spectroscopy</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkE9LAzEQxYMoWKsfQQh43ja7SXaTk0jxHxS81HPIJrOabbqpya7Qb29Ke_c0MG_eG94PofuSLEpS1st-0WvvTdgtKlLlHeeCkgs0K0VDC1bX8hLNiKx4IagQ1-gmpZ4QUkpaztDXxo16cNOuaHUCiwc9hBhsWm5h7GHArddmi3fBus5lOcFeRz2GiHXC--APafKds5Bwq2N0EHGXNe_G7xyJj-IUsQHvb9FVp32Cu_Oco8-X583qrVh_vL6vntaFobQZi7YiXIsauBUd04zrxlZgTMVkybhohNQga22h7aSVQrKm44S2pmbQ1hZ4Tefo4ZS7j-FngjSqPkxxyC9VxZhgVIrsmCN-ujIxpBShU_vodjoeVEnUkanq1ZmpOjJVJ6bZ93jyQa7wm-uqZBwMBqyLYEZlg_sn4Q-JC4Se</recordid><startdate>20201125</startdate><enddate>20201125</enddate><creator>Wan, Yonghua</creator><creator>Ma, Xinxin</creator><creator>Hao, Junwei</creator><creator>Min, Huihua</creator><creator>You, Hairui</creator><creator>Liu, Xiaomin</creator><creator>Yang, Hui</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20201125</creationdate><title>Titanium-based nanorods/ketjen black modified separator as polysulfides barrier for lithium sulfur cell</title><author>Wan, Yonghua ; Ma, Xinxin ; Hao, Junwei ; Min, Huihua ; You, Hairui ; Liu, Xiaomin ; Yang, Hui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-b205a86e5d8f4a45a7d2ecc2491458789ae96adebf9d98947f503bc64eb6de563</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Anodes</topic><topic>Bi-functional separator</topic><topic>Electrochemical analysis</topic><topic>Electron transport</topic><topic>Hydrothermal method</topic><topic>Hydrothermal reactions</topic><topic>Ketjen black</topic><topic>Li/S cell</topic><topic>Lithium sulfur batteries</topic><topic>Nanorods</topic><topic>Polysulfides</topic><topic>Separators</topic><topic>Titanium</topic><topic>Titanium-based nanorods</topic><topic>X ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wan, Yonghua</creatorcontrib><creatorcontrib>Ma, Xinxin</creatorcontrib><creatorcontrib>Hao, Junwei</creatorcontrib><creatorcontrib>Min, Huihua</creatorcontrib><creatorcontrib>You, Hairui</creatorcontrib><creatorcontrib>Liu, Xiaomin</creatorcontrib><creatorcontrib>Yang, Hui</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wan, Yonghua</au><au>Ma, Xinxin</au><au>Hao, Junwei</au><au>Min, Huihua</au><au>You, Hairui</au><au>Liu, Xiaomin</au><au>Yang, Hui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Titanium-based nanorods/ketjen black modified separator as polysulfides barrier for lithium sulfur cell</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2020-11-25</date><risdate>2020</risdate><volume>842</volume><spage>155830</spage><pages>155830-</pages><artnum>155830</artnum><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>The practical application of lithium sulfur (Li/S) cells is mainly hindered by the shuttle effect. Herein, the titanium-based nanorods/ketjen black (KB) composite prepared by a facile hydrothermal reaction is deposited on polypropylene to fabricate a bi-functional separator (KTO-2/PP) for Li/S cell. Using bare sublimed sulfur cathode, the cell based on KTO-2/PP separator exhibits excellent rate capability, delivering 1122, 856, and 566 mAh g−1 at 0.2, 1 and 2C, respectively. Moreover, the reversible capacity of the KTO-2/PP based cell can reach 754 mAh g−1 (1C) in the 200th cycle. Such performance boost is primarily ascribed to the KTO-2/PP separator, that Li+ is allowed to pass through but lithium polysulfides (LiPS) is shielded against shuttle. The conductive KB facilitates electron transport and adsorbs LiPS physically. The titanium-based nanorods adsorbs LiPS chemically by forming Ti–S bond which is confirmed by XPS analysis. Regarding the aged Li/S cell using KTO-2/PP, the smooth surface of PP (facing lithium anode) and the less sediment and negligible corrosion on anode indicate that the KTO-2/PP separator acts as an efficient barrier to inhibit the LiPS migration and enhances the electrochemical performance.
[Display omitted]
•KTO-2/PP prepared via a hydrothermal method is employed as bi-functional separator.•The strong chemical adsorption of KTO-2 to LiPS is proved by XPS analysis.•KTO-2/PP based cell presents 1122 and 856 mAh g−1 at 0.2 and 1C, respectively.•KTO-2/PP based cell remains 754 mAh g−1 after 200 cycles at 1C.•Little sediments are found on the lithium anode for aged KTO-2/PP based cell.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2020.155830</doi></addata></record> |
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| subjects | Anodes Bi-functional separator Electrochemical analysis Electron transport Hydrothermal method Hydrothermal reactions Ketjen black Li/S cell Lithium sulfur batteries Nanorods Polysulfides Separators Titanium Titanium-based nanorods X ray photoelectron spectroscopy |
| title | Titanium-based nanorods/ketjen black modified separator as polysulfides barrier for lithium sulfur cell |
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