Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion Batteries
Purposes K-ion batteries (KIBs) have attracted considerable attention as a potential alternative to Li-ion batteries because of their low cost and high energy density. However, the development of KIBs has been severely limited by the lack of cathodes with high specific capacity and good cycle perfor...
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| Format: | Article |
| Language: | English |
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Editorial Office of Journal of Taiyuan University of Technology
2023-07-01
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| Series: | Taiyuan Ligong Daxue xuebao |
| Subjects: | |
| Online Access: | https://tyutjournal.tyut.edu.cn/englishpaper/show-2091.html |
| _version_ | 1827283474708430848 |
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| author | Man YU Bo ZHANG Zhonghua LU Liang CHEN Ding ZHANG Shibin LIU Shoudong XU |
| author_facet | Man YU Bo ZHANG Zhonghua LU Liang CHEN Ding ZHANG Shibin LIU Shoudong XU |
| author_sort | Man YU |
| collection | DOAJ |
| description | Purposes K-ion batteries (KIBs) have attracted considerable attention as a potential alternative to Li-ion batteries because of their low cost and high energy density. However, the development of KIBs has been severely limited by the lack of cathodes with high specific capacity and good cycle performance. Methods In this research, P3-type K0.5MnO2 as a new cathode material for KIBs was prepared through hydrothermal method, sol-gel method, and oxalate co-precipitation method, separately. Conclustions It is shown that K0.5MnO2 synthesized through the hydrothermal precursor method (denoted as H-K0.5MnO2) has a rough surface and more internal pores, which are beneficial to electron transfer and can provide more active sites. At a specific current of 20 mA/g, H-K0.5MnO2 electrode can achieve the highest first discharge specific capacity of 85 mAh/g. XRD and EIS results of the H-K0.5MnO2 electrodes after 60 cycles demonstrate that H-K0.5MnO2 still maintains the most stable structure and has the smallest charge transfer resistance, leading to a desirable capacity retention. The potassium-ions storage properties indicate that the pseudo-capacitance accounts for the highest proportion in H-K0.5MnO2 at a high rate, enabling fast reversible charge-discharge. |
| first_indexed | 2024-04-24T09:37:04Z |
| format | Article |
| id | doaj.art-fa9bfb2fabd145fb822540202bf091d4 |
| institution | Directory Open Access Journal |
| issn | 1007-9432 |
| language | English |
| last_indexed | 2024-04-24T09:37:04Z |
| publishDate | 2023-07-01 |
| publisher | Editorial Office of Journal of Taiyuan University of Technology |
| record_format | Article |
| series | Taiyuan Ligong Daxue xuebao |
| spelling | doaj.art-fa9bfb2fabd145fb822540202bf091d42024-04-15T09:16:50ZengEditorial Office of Journal of Taiyuan University of TechnologyTaiyuan Ligong Daxue xuebao1007-94322023-07-0154463764610.16355/j.cnki.issn1007-9432tyut.2023.04.0071007-9432(2023)04-0637-10Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion BatteriesMan YU0Bo ZHANG1Zhonghua LU2Liang CHEN3Ding ZHANG4Shibin LIU5Shoudong XU6College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, ChinaPurposes K-ion batteries (KIBs) have attracted considerable attention as a potential alternative to Li-ion batteries because of their low cost and high energy density. However, the development of KIBs has been severely limited by the lack of cathodes with high specific capacity and good cycle performance. Methods In this research, P3-type K0.5MnO2 as a new cathode material for KIBs was prepared through hydrothermal method, sol-gel method, and oxalate co-precipitation method, separately. Conclustions It is shown that K0.5MnO2 synthesized through the hydrothermal precursor method (denoted as H-K0.5MnO2) has a rough surface and more internal pores, which are beneficial to electron transfer and can provide more active sites. At a specific current of 20 mA/g, H-K0.5MnO2 electrode can achieve the highest first discharge specific capacity of 85 mAh/g. XRD and EIS results of the H-K0.5MnO2 electrodes after 60 cycles demonstrate that H-K0.5MnO2 still maintains the most stable structure and has the smallest charge transfer resistance, leading to a desirable capacity retention. The potassium-ions storage properties indicate that the pseudo-capacitance accounts for the highest proportion in H-K0.5MnO2 at a high rate, enabling fast reversible charge-discharge.https://tyutjournal.tyut.edu.cn/englishpaper/show-2091.htmlpotassium-ion batteriescathode materialhydrothermal precursor methodp3-type k0.5mno2potassium ions storage properties |
| spellingShingle | Man YU Bo ZHANG Zhonghua LU Liang CHEN Ding ZHANG Shibin LIU Shoudong XU Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion Batteries Taiyuan Ligong Daxue xuebao potassium-ion batteries cathode material hydrothermal precursor method p3-type k0.5mno2 potassium ions storage properties |
| title | Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion Batteries |
| title_full | Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion Batteries |
| title_fullStr | Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion Batteries |
| title_full_unstemmed | Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion Batteries |
| title_short | Preparation and Potassium Ions Storage Properties of P3-Type K0.5MnO2 as an Advanced Layered Cathode Material for Potassium-Ion Batteries |
| title_sort | preparation and potassium ions storage properties of p3 type k0 5mno2 as an advanced layered cathode material for potassium ion batteries |
| topic | potassium-ion batteries cathode material hydrothermal precursor method p3-type k0.5mno2 potassium ions storage properties |
| url | https://tyutjournal.tyut.edu.cn/englishpaper/show-2091.html |
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