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Sun, Jian; Ren, Jiafei; Ma, Haobo; Han, Xia; Liu, Juan
Carbon (New York), 02/2024, Volume: 220Journal Article
Biomass-derived carbon is regarded as a potential replacement for commercial graphite carbon for the anode of powerful lithium-ion batteries (LIBs), because of its abundance and ecological advantage. In this research, biomass-derived carbon is prepared from natural Carex meyeriana Kunth, and the biomass-derived carbon electrode with coordinatively unsaturated Znx+(0 < x < 2) sites is synthesized by solar irradiation. The Znx+(0 < x < 2) electrode is used as the LIBs anode. It provides a highly specific capacity of 638.6 mAh g−1 at 200 mA g−1 after 900 cycles and an outstanding cycling capacity of 614.9 mAh g−1 at 1000 mA g−1 after 1000 cycles. The capacity of the electrode exceeds the majority of reported carbonaceous anodes. This study presents a practical strategy to prepare novel and low-cost carbonaceous anode. The resulting anode has promising potential for use in advanced LIBs and other energy storage devices due to its excellent Li+ storage capability. Display omitted •Biomass-derived carbon with coordinatively unsaturated Znx + anode was prepared by solar irradiation.•The Li + diffusion coefficients and electrical conductivity of the biomass-derived carbon anode are enhanced by Znx+.•The biomass-derived carbon with Znx+ has a significant discharge capacity of 614.9 mAh g−1 over 1000 cycles at 1000 mA g−1.•Outstanding charge transfer kinetics and cyclic stability are demonstrated for the biomass-derived carbon with Znx + anode.
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