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- W4220921693 abstract "Potassium-ion batteries (PIBs) have attracted tremendous attention for large-scale energy storage fields based on abundant potassium resources. Graphite is a promising anode material for PIBs due to its low potassium ion intercalation voltage and mature industrialized preparation technology. However, the inability of graphitic structures to endure large volume change during charge/discharge cycles is a major limitation in their advancement for practical PIBs. Herein, a soft carbon-coated bulk graphite composite is synthesized using PTCDA as a carbon precursor. The PTCDA-derived soft carbon coating layer with large interlayer distance facilities fast potassium ion intercalation/extraction in the [email protected] composite and buffers severe volume change during the charge/discharge cycles. When tested as anode for PIBs, the composite realizes enhanced rate capability (131.3 mAh/g at 2 C, 1 C = 279 mA/g) and cycling performance (capacity retention of 76.1% after 150 cycles at 0.5 C). In general, the surface modification route to engineer graphite anode could inherently improve the electrochemical performance without any structural alteration." @default.
- W4220921693 created "2022-04-03" @default.
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- W4220921693 date "2023-03-01" @default.
- W4220921693 modified "2023-10-16" @default.
- W4220921693 title "Soft carbon-coated bulk graphite for improved potassium ion storage" @default.
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- W4220921693 doi "https://doi.org/10.1016/j.cclet.2022.03.035" @default.
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