Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-Modification
Olivine-structure LiFePO<sub>4</sub> is considered as promising cathode materials for lithium-ion batteries. However, the material always sustains poor electron conductivity, severely hindering its further commercial application. In this work, zinc oxide and carbon co-modified LiFePO<...
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MDPI AG
2020-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/1/12 |
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| author | Xiaohua Chen Yong Li Juan Wang |
| author_facet | Xiaohua Chen Yong Li Juan Wang |
| author_sort | Xiaohua Chen |
| collection | DOAJ |
| description | Olivine-structure LiFePO<sub>4</sub> is considered as promising cathode materials for lithium-ion batteries. However, the material always sustains poor electron conductivity, severely hindering its further commercial application. In this work, zinc oxide and carbon co-modified LiFePO<sub>4</sub> nanomaterials (LFP/C-ZnO) were prepared by an inorganic-based hydrothermal route, which vastly boosts its performance. The sample of LFP/C-xZnO (x = 3 wt%) exhibited well-dispersed spherical particles and remarkable cycling stability (initial discharge capacities of 138.7 mAh/g at 0.1 C, maintained 94.8% of the initial capacity after 50 cycles at 0.1 C). In addition, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) disclose the reduced charge transfer resistance from 296 to 102 Ω. These suggest that zinc oxide and carbon modification could effectively minimize charge transfer resistance, improve contact area, and buffer the diffusion barrier, including electron conductivity and the electrochemical property. Our study provides a simple and efficient strategy to design and optimize promising olivine-structural cathodes for lithium-ion batteries. |
| first_indexed | 2024-03-10T13:50:00Z |
| format | Article |
| id | doaj.art-0dd22cba61bb4ca4a26ff1a67223228b |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T13:50:00Z |
| publishDate | 2020-12-01 |
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| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0dd22cba61bb4ca4a26ff1a67223228b2023-11-21T02:13:07ZengMDPI AGNanomaterials2079-49912020-12-011111210.3390/nano11010012Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-ModificationXiaohua Chen0Yong Li1Juan Wang2State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaShaanxi Key Laboratory of Nanomaterials and Nanotechnology, School of Mechanical & Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaShaanxi Key Laboratory of Nanomaterials and Nanotechnology, School of Mechanical & Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaOlivine-structure LiFePO<sub>4</sub> is considered as promising cathode materials for lithium-ion batteries. However, the material always sustains poor electron conductivity, severely hindering its further commercial application. In this work, zinc oxide and carbon co-modified LiFePO<sub>4</sub> nanomaterials (LFP/C-ZnO) were prepared by an inorganic-based hydrothermal route, which vastly boosts its performance. The sample of LFP/C-xZnO (x = 3 wt%) exhibited well-dispersed spherical particles and remarkable cycling stability (initial discharge capacities of 138.7 mAh/g at 0.1 C, maintained 94.8% of the initial capacity after 50 cycles at 0.1 C). In addition, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) disclose the reduced charge transfer resistance from 296 to 102 Ω. These suggest that zinc oxide and carbon modification could effectively minimize charge transfer resistance, improve contact area, and buffer the diffusion barrier, including electron conductivity and the electrochemical property. Our study provides a simple and efficient strategy to design and optimize promising olivine-structural cathodes for lithium-ion batteries.https://www.mdpi.com/2079-4991/11/1/12lithium-ion batteriesLiFePO<sub>4</sub>co-modificationnanomaterialselectron conductivity |
| spellingShingle | Xiaohua Chen Yong Li Juan Wang Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-Modification Nanomaterials lithium-ion batteries LiFePO<sub>4</sub> co-modification nanomaterials electron conductivity |
| title | Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-Modification |
| title_full | Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-Modification |
| title_fullStr | Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-Modification |
| title_full_unstemmed | Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-Modification |
| title_short | Enhanced Electrochemical Performance of LiFePO<sub>4</sub> Originating from the Synergistic Effect of ZnO and C Co-Modification |
| title_sort | enhanced electrochemical performance of lifepo sub 4 sub originating from the synergistic effect of zno and c co modification |
| topic | lithium-ion batteries LiFePO<sub>4</sub> co-modification nanomaterials electron conductivity |
| url | https://www.mdpi.com/2079-4991/11/1/12 |
| work_keys_str_mv | AT xiaohuachen enhancedelectrochemicalperformanceoflifeposub4suboriginatingfromthesynergisticeffectofznoandccomodification AT yongli enhancedelectrochemicalperformanceoflifeposub4suboriginatingfromthesynergisticeffectofznoandccomodification AT juanwang enhancedelectrochemicalperformanceoflifeposub4suboriginatingfromthesynergisticeffectofznoandccomodification |