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Article

Enhanced Electrochemical Performance of LiFePO4 Originating from the Synergistic Effect of ZnO and C Co-Modification

by 1,*, 2 and 2,*
1
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
2
Shaanxi Key Laboratory of Nanomaterials and Nanotechnology, School of Mechanical & Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2021, 11(1), 12; https://doi.org/10.3390/nano11010012
Received: 17 November 2020 / Revised: 17 December 2020 / Accepted: 18 December 2020 / Published: 23 December 2020
Olivine-structure LiFePO4 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 LiFePO4 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. View Full-Text
Keywords: lithium-ion batteries; LiFePO4; co-modification; nanomaterials; electron conductivity lithium-ion batteries; LiFePO4; co-modification; nanomaterials; electron conductivity
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MDPI and ACS Style

Chen, X.; Li, Y.; Wang, J. Enhanced Electrochemical Performance of LiFePO4 Originating from the Synergistic Effect of ZnO and C Co-Modification. Nanomaterials 2021, 11, 12. https://doi.org/10.3390/nano11010012

AMA Style

Chen X, Li Y, Wang J. Enhanced Electrochemical Performance of LiFePO4 Originating from the Synergistic Effect of ZnO and C Co-Modification. Nanomaterials. 2021; 11(1):12. https://doi.org/10.3390/nano11010012

Chicago/Turabian Style

Chen, Xiaohua, Yong Li, and Juan Wang. 2021. "Enhanced Electrochemical Performance of LiFePO4 Originating from the Synergistic Effect of ZnO and C Co-Modification" Nanomaterials 11, no. 1: 12. https://doi.org/10.3390/nano11010012

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