A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se Batteries
Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However,...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/12/5/815 |
| _version_ | 1797474268504653824 |
|---|---|
| author | Yang Xia Zheng Fang Chengwei Lu Zhen Xiao Xinping He Yongping Gan Hui Huang Guoguang Wang Wenkui Zhang |
| author_facet | Yang Xia Zheng Fang Chengwei Lu Zhen Xiao Xinping He Yongping Gan Hui Huang Guoguang Wang Wenkui Zhang |
| author_sort | Yang Xia |
| collection | DOAJ |
| description | Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub>2</sub>Se-LiTiO<sub>2</sub> composite cathode materials. Impressively, the rationally designed Li<sub>2</sub>Se-LiTiO<sub>2</sub> composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub>2</sub>Se-LiTiO<sub>2</sub> cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub>2</sub>Se-LiTiO<sub>2</sub> cathode is two times higher than that of Li<sub>2</sub>Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup>4+</sup> into Ti<sup>3+</sup>, as well as the strong chemisorption of LiTiO<sub>2</sub> particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications. |
| first_indexed | 2024-03-09T20:28:44Z |
| format | Article |
| id | doaj.art-fed48e8a9c384065959c28a3e52903a1 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T20:28:44Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-fed48e8a9c384065959c28a3e52903a12023-11-23T23:30:35ZengMDPI AGNanomaterials2079-49912022-02-0112581510.3390/nano12050815A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se BatteriesYang Xia0Zheng Fang1Chengwei Lu2Zhen Xiao3Xinping He4Yongping Gan5Hui Huang6Guoguang Wang7Wenkui Zhang8College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaInstitute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, ChinaCollege of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaHengdian Group DMEGC Magnetics Co., Ltd., Dongyang 322118, ChinaCollege of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaConventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li<sub>2</sub>Se-LiTiO<sub>2</sub> composite cathode materials. Impressively, the rationally designed Li<sub>2</sub>Se-LiTiO<sub>2</sub> composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li<sub>2</sub>Se-LiTiO<sub>2</sub> cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li<sub>2</sub>Se-LiTiO<sub>2</sub> cathode is two times higher than that of Li<sub>2</sub>Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti<sup>4+</sup> into Ti<sup>3+</sup>, as well as the strong chemisorption of LiTiO<sub>2</sub> particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications.https://www.mdpi.com/2079-4991/12/5/815Li-Se batteriesLi<sub>2</sub>SeLiTiO<sub>2</sub>pre-lithiationpolyselenides |
| spellingShingle | Yang Xia Zheng Fang Chengwei Lu Zhen Xiao Xinping He Yongping Gan Hui Huang Guoguang Wang Wenkui Zhang A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se Batteries Nanomaterials Li-Se batteries Li<sub>2</sub>Se LiTiO<sub>2</sub> pre-lithiation polyselenides |
| title | A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se Batteries |
| title_full | A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se Batteries |
| title_fullStr | A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se Batteries |
| title_full_unstemmed | A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se Batteries |
| title_short | A Facile Pre-Lithiated Strategy towards High-Performance Li<sub>2</sub>Se-LiTiO<sub>2</sub> Composite Cathode for Li-Se Batteries |
| title_sort | facile pre lithiated strategy towards high performance li sub 2 sub se litio sub 2 sub composite cathode for li se batteries |
| topic | Li-Se batteries Li<sub>2</sub>Se LiTiO<sub>2</sub> pre-lithiation polyselenides |
| url | https://www.mdpi.com/2079-4991/12/5/815 |
| work_keys_str_mv | AT yangxia afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT zhengfang afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT chengweilu afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT zhenxiao afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT xinpinghe afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT yongpinggan afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT huihuang afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT guoguangwang afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT wenkuizhang afacileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT yangxia facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT zhengfang facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT chengweilu facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT zhenxiao facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT xinpinghe facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT yongpinggan facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT huihuang facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT guoguangwang facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries AT wenkuizhang facileprelithiatedstrategytowardshighperformancelisub2subselitiosub2subcompositecathodeforlisebatteries |