Synthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion Batteries
Due to the abundance and low cost of sodium, sodium-ion batteries have received renewed attention in large-scale applications. At present, the primary task is to explore a new generation of cathode materials with excellent performance. Herein, ascorbic acid was used as a carbon source, Na2Fe0.85Mg0....
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| Format: | Article |
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The Electrochemical Society of Japan
2022-11-01
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| Series: | Electrochemistry |
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| Online Access: | https://www.jstage.jst.go.jp/article/electrochemistry/90/11/90_22-00103/_html/-char/en |
| _version_ | 1811215292870688768 |
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| author | Feixiang GUO Sen WANG Gaobin LIU Tao WANG Wencai HU Xueyan HAN Yongheng FAN Qi YUAN |
| author_facet | Feixiang GUO Sen WANG Gaobin LIU Tao WANG Wencai HU Xueyan HAN Yongheng FAN Qi YUAN |
| author_sort | Feixiang GUO |
| collection | DOAJ |
| description | Due to the abundance and low cost of sodium, sodium-ion batteries have received renewed attention in large-scale applications. At present, the primary task is to explore a new generation of cathode materials with excellent performance. Herein, ascorbic acid was used as a carbon source, Na2Fe0.85Mg0.15PO4F/C (NFMPF/C) and Na2Fe0.8Mg0.15Ni0.05PO4F/C (NFMNPF/C) cathode materials were prepared by conventional solid-state reaction method on the basis of Na2FePO4F/C (NFPF/C). The electrochemical performance of the cathode material was improved by doping Mg and Ni on the Fe site, which was confirmed by the volt-ampere characteristic test and charge-discharge test. Compared with NFPF/C, the electrochemical performance of NFMPF/C has been greatly improved. After further doping of Ni, NFMNPF/C shows a stable discharge capacity, which can still maintain 91.3 % of the initial specific capacity after 50 cycles at 0.1 C-rate, while the rate capability shows a great improvement. The optimized NFMNPF/C sample can deliver a specific discharge capacity of 53 mAh/g at 5 C-rate. In general, the simple doping of NFPF/C optimizes the cycle life and rate capability at the same time. As a low-cost cathode material, this study provides more possibilities for the development of sodium-ion batteries. |
| first_indexed | 2024-04-12T06:20:23Z |
| format | Article |
| id | doaj.art-6401e31bb909477fba546f6f52b8aa05 |
| institution | Directory Open Access Journal |
| issn | 2186-2451 |
| language | English |
| last_indexed | 2024-04-12T06:20:23Z |
| publishDate | 2022-11-01 |
| publisher | The Electrochemical Society of Japan |
| record_format | Article |
| series | Electrochemistry |
| spelling | doaj.art-6401e31bb909477fba546f6f52b8aa052022-12-22T03:44:21ZengThe Electrochemical Society of JapanElectrochemistry2186-24512022-11-01901111700311700310.5796/electrochemistry.22-00103electrochemistrySynthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion BatteriesFeixiang GUO0Sen WANG1https://orcid.org/0000-0003-0022-3899Gaobin LIU2Tao WANG3Wencai HU4Xueyan HAN5Yongheng FAN6Qi YUAN7School of Materials and Metallurgy, University of Science and Technology LiaoningSchool of Materials and Metallurgy, University of Science and Technology LiaoningSchool of Materials and Metallurgy, University of Science and Technology LiaoningFujian Huaqing Electronic Material Technology Co., Ltd.Fujian Huaqing Electronic Material Technology Co., Ltd.School of Materials and Metallurgy, University of Science and Technology LiaoningSchool of Materials and Metallurgy, University of Science and Technology LiaoningSchool of Materials and Metallurgy, University of Science and Technology LiaoningDue to the abundance and low cost of sodium, sodium-ion batteries have received renewed attention in large-scale applications. At present, the primary task is to explore a new generation of cathode materials with excellent performance. Herein, ascorbic acid was used as a carbon source, Na2Fe0.85Mg0.15PO4F/C (NFMPF/C) and Na2Fe0.8Mg0.15Ni0.05PO4F/C (NFMNPF/C) cathode materials were prepared by conventional solid-state reaction method on the basis of Na2FePO4F/C (NFPF/C). The electrochemical performance of the cathode material was improved by doping Mg and Ni on the Fe site, which was confirmed by the volt-ampere characteristic test and charge-discharge test. Compared with NFPF/C, the electrochemical performance of NFMPF/C has been greatly improved. After further doping of Ni, NFMNPF/C shows a stable discharge capacity, which can still maintain 91.3 % of the initial specific capacity after 50 cycles at 0.1 C-rate, while the rate capability shows a great improvement. The optimized NFMNPF/C sample can deliver a specific discharge capacity of 53 mAh/g at 5 C-rate. In general, the simple doping of NFPF/C optimizes the cycle life and rate capability at the same time. As a low-cost cathode material, this study provides more possibilities for the development of sodium-ion batteries.https://www.jstage.jst.go.jp/article/electrochemistry/90/11/90_22-00103/_html/-char/encarbon coatingion dopingsodium-ion batteries |
| spellingShingle | Feixiang GUO Sen WANG Gaobin LIU Tao WANG Wencai HU Xueyan HAN Yongheng FAN Qi YUAN Synthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion Batteries Electrochemistry carbon coating ion doping sodium-ion batteries |
| title | Synthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion Batteries |
| title_full | Synthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion Batteries |
| title_fullStr | Synthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion Batteries |
| title_full_unstemmed | Synthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion Batteries |
| title_short | Synthesis and Electrochemical Properties of Na2Fe0.8Mg0.15Ni0.05PO4F/C Composite as Cathode Materials for Sodium-ion Batteries |
| title_sort | synthesis and electrochemical properties of na2fe0 8mg0 15ni0 05po4f c composite as cathode materials for sodium ion batteries |
| topic | carbon coating ion doping sodium-ion batteries |
| url | https://www.jstage.jst.go.jp/article/electrochemistry/90/11/90_22-00103/_html/-char/en |
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