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Int J Miner Metall Mater, 2019, 26(12): 1512 [47] Ma Z, Zhuang Y C, Deng Y M, et al. From spent graphite to amorphous sp2+sp3 carbon-coated sp2 graphite for highperformance lithium ion batteries. J Power Sources, 2018, 376: 91 [48] · 1760 · 工程科学学报,第 43 卷,第 12 期