Characterization and electrochemical investigation of boron-doped mesocarbon microbead anode materials for lithium ion batteries |
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Authors: | Mao-Hui Chen Guo-Tao Wu Guang-Ming Zhu Jin-Kua You Zu-Geng Lin |
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Affiliation: | (1) State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen, Fujian 361005, P.R. China, |
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Abstract: | The structure and anodic performance of boron-doped and undoped mesocarbon microbeads (MCMBs) have been comparatively studied and the results obtained by XPS, XRD, SEM, Raman spectroscopy and electrochemical measurements are discussed. It is found that boron doping introduces a depressed d 002 spacing and the larger amount of "unorganized carbon", which induces vacancy formation in the graphite planes and leads to a quite different morphology from that of the undoped material. Electrochemical charge/discharge cycle tests indicated that after boron doping the lithium intercalation was carried through at a somewhat higher potential, being attended by greater irreversible capacity loss. Electronic Publication |
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Keywords: | Mesocarbon microbeads Boron doping Electrochemical properties |
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