Role of Nickel Nanoparticles in High‐Performance TiO2/Ni/Carbon Nanohybrid Lithium/Sodium‐Ion Battery Anodes |
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| Authors: | Xiaoyan Wang Dr. Dong Zhao Dr. Chao Wang Dr. Yonggao Xia Wenshuai Jiang Senlin Xia Shanshan Yin Dr. Xiuxia Zuo Dr. Ezzeldin Metwalli Ying Xiao Prof. Dr. Zaicheng Sun Prof. Dr. Jin Zhu Prof. Dr. Peter Müller‐Buschbaum Prof. Dr. Ya‐Jun Cheng |
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| Affiliation: | 1. Ningbo Institute of Materials Technology&Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Rd, Zhenhai District, Ningbo, Zhejiang Province, 315201 P. R. China;2. University of Chinese Academy of Sciences, 19A Yuquan Rd, Shijingshan District, Beijing, 100049 P. R. China;3. Max-Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany;4. Department of Nuclear Science and Engineering, Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139 USA;5. Beijing Key Laboratory of Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, School of Environmental and Energy, Beijing University of Technology, Beijing, 100124 P. R. China;6. Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universit?t München, James-Franck-Str. 1, 85748 Garching, Germany;7. Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universit?t München, Lichtenbergstr. 1, 85748 Garching, Germany;8. Department of Materials, University of Oxford, Parks Rd, OX1 3PH Oxford, UK |
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| Abstract: | Super‐small sized TiO2 nanoparticles are in situ co‐composited with carbon and nickel nanoparticles in a facile scalable way, using difunctional methacrylate monomers as solvent and carbon source. Good control over crystallinity, morphology, and dispersion of the nanohybrid is achieved because of the thermosetting nature of the resin polymer. The effects of the nickel nanoparticle on the composition, crystallographic phase, structure, morphology, tap density, specific surface area, and electrochemical performance as both lithium‐ion and sodium‐ion battery anodes are systematically investigated. It is found that the incorporation of the in situ formed nickel nanoparticles with certain content effectively enhances the electrochemical performance including reversible capacities, cyclic stability and rate performance as both lithium‐ion and sodium‐ion battery anodes. The experimental I‐V profiles at different temperatures and theoretical calculations reveal that the charge carriers are accumulated in the amorphous carbon regions, which act as scattering centers to the carriers and lower the carrier mobility for the composite. With increasing nickel content, the mobility of the charge carriers is significantly increased, while the number of the charge carriers maintains almost constant. The nickel nanoparticles provide extra pathways for the accumulated charge, leading to reduced scatterings among the charge carriers and enhanced charge‐carrier transportation. |
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| Keywords: | difunctional methacrylate monomer lithium/sodium-ion battery anode mobility photo polymerization titania/nickel/carbon nanohybrid |
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