Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion Batteries
NASICON-type Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub> (NMCP) wrapped with reduced graphene oxide (rGO) was synthesized via a simple sol-gel method as composite cathode material Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/19/4046 |
| _version_ | 1797477292984762368 |
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| author | Bing-Hsuan Hsu Wei-Ren Liu |
| author_facet | Bing-Hsuan Hsu Wei-Ren Liu |
| author_sort | Bing-Hsuan Hsu |
| collection | DOAJ |
| description | NASICON-type Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub> (NMCP) wrapped with reduced graphene oxide (rGO) was synthesized via a simple sol-gel method as composite cathode material Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO (NMCP/rGO) for Na ion batteries. The surface morphology, crystal structure and pore size distribution of pristine NMCP and as-synthesized NMCP/rGO composite cathode are identified by X-ray diffraction (XRD), field emission-scanning electron microscopy (SEM), transmission electron microscope (TEM), the Brunauer–Emmett–Teller (BET) method and X-ray photoelectron spectroscopy (XPS). The electrochemical performance of composition-optimized NMCP/rGO composite cathode presents stable capacity retention and rate capability. The capacity retention of as-synthesized NMCP/rGO composite is 63.8%, and average coulombic efficiency maintains over 98.7% for 200 cycles. The reversible capacity of as-synthesized NMCP/rGO composite cathode still retained 45 mAh/g and 38 mAh/g under a current density of 0.5 A/g and 1.0 A/g, respectively, which was better than that of pristine NMCP, with only 6 mAh/g and 4 mAh/g. The redox reactions of pristine NMCP and as-synthesized NMCP/rGO composite are studied via cyclic voltammetry. The improved electronic conductivity and structure stability of bare NMCP is attributed to the contribution of the rGO coating. |
| first_indexed | 2024-03-09T21:15:32Z |
| format | Article |
| id | doaj.art-015254af585b4ba1b042c606df01014b |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T21:15:32Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-015254af585b4ba1b042c606df01014b2023-11-23T21:33:23ZengMDPI AGPolymers2073-43602022-09-011419404610.3390/polym14194046Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion BatteriesBing-Hsuan Hsu0Wei-Ren Liu1Department of Chemical Engineering, R&D Center for Membrane Technology, Center for Circular Economy, Chung Yuan Christian University, 200 Chung Pei Road, Chungli District, Taoyuan City 320, TaiwanDepartment of Chemical Engineering, R&D Center for Membrane Technology, Center for Circular Economy, Chung Yuan Christian University, 200 Chung Pei Road, Chungli District, Taoyuan City 320, TaiwanNASICON-type Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub> (NMCP) wrapped with reduced graphene oxide (rGO) was synthesized via a simple sol-gel method as composite cathode material Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO (NMCP/rGO) for Na ion batteries. The surface morphology, crystal structure and pore size distribution of pristine NMCP and as-synthesized NMCP/rGO composite cathode are identified by X-ray diffraction (XRD), field emission-scanning electron microscopy (SEM), transmission electron microscope (TEM), the Brunauer–Emmett–Teller (BET) method and X-ray photoelectron spectroscopy (XPS). The electrochemical performance of composition-optimized NMCP/rGO composite cathode presents stable capacity retention and rate capability. The capacity retention of as-synthesized NMCP/rGO composite is 63.8%, and average coulombic efficiency maintains over 98.7% for 200 cycles. The reversible capacity of as-synthesized NMCP/rGO composite cathode still retained 45 mAh/g and 38 mAh/g under a current density of 0.5 A/g and 1.0 A/g, respectively, which was better than that of pristine NMCP, with only 6 mAh/g and 4 mAh/g. The redox reactions of pristine NMCP and as-synthesized NMCP/rGO composite are studied via cyclic voltammetry. The improved electronic conductivity and structure stability of bare NMCP is attributed to the contribution of the rGO coating.https://www.mdpi.com/2073-4360/14/19/4046NASICONreduced graphene oxidesodium ion batteryNa<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>cathode |
| spellingShingle | Bing-Hsuan Hsu Wei-Ren Liu Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion Batteries Polymers NASICON reduced graphene oxide sodium ion battery Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub> cathode |
| title | Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion Batteries |
| title_full | Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion Batteries |
| title_fullStr | Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion Batteries |
| title_full_unstemmed | Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion Batteries |
| title_short | Synthesis and Characterizations of Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub>/rGO as NASICON-Type Cathode Materials for Sodium-ion Batteries |
| title_sort | synthesis and characterizations of na sub 4 sub mncr po sub 4 sub sub 3 sub rgo as nasicon type cathode materials for sodium ion batteries |
| topic | NASICON reduced graphene oxide sodium ion battery Na<sub>4</sub>MnCr(PO<sub>4</sub>)<sub>3</sub> cathode |
| url | https://www.mdpi.com/2073-4360/14/19/4046 |
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