High-performance K-ion half/full batteries with superb rate capability and cycle stability.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35658081.
- Also identified by DOI 10.1073/pnas.2122252119 and PMC identifier 9191680.
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Abstract
SignificanceThe present work might be significant for exploring advanced K-ion batteries with superb rate capability and cycle stability toward practical applications. The as-assembled K-ion half cell exhibits an excellent rate capability of 428 mA h g<sup>-1</sup> at 100 mA g<sup>-1</sup> and a high reversible specific capacity of 330 mA h g<sup>-1</sup> with 120% specific capacity retention after 2,000 cycles at 2,000 mA g<sup>-1</sup>, which is the best among those based on carbon materials. The as-constructed full cell delivers 98% specific capacity retention over 750 cycles at 500 mA g<sup>-1</sup>, superior to most of those based on carbon materials that have been reported thus far.