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• W4283585891 abstract "Abstract Laser scribing technology is a straightforward technique to fabricate porous graphene, yet only conducted with polymeric precursors. Compared to polymers, molecular engineering of small organic molecules is much easier, which can be used to modify the graphene with tailored performance. Here we report the first employment of a laser to respectively transform small organic molecules, pentacene quinone and tetraazapentacene quinone (TAPQ), into graphene (P‐LIG and N‐LIG) as high‐performance lithium‐ion battery anodes. The TAPQ, as the N‐fused molecular precursor, produces nitrogen‐doped graphene. Both N‐LIG and P‐LIG exhibit significant self‐enhancement of capacity upon cycling; the N‐LIG anode delivers reversible capacities of 5863 mAh g ‐1 at 0.2 A g ‐1 and retains 1970 mAh g ‐1 at 2 A g ‐1 after another 500 cycles, which is the best performance for the graphene‐type anode. Kinetics studies and structural characterizations verify that the surface‐ and diffusion‐controlled processes are both progressively optimized, providing extra lithium storage upon cycling. It is also supported by small‐angle X‐ray scattering that the disordering level of micropores is increased upon cycling for N‐LIG, corresponding to the enhancement of microporous level. Our work successfully develops a novel facile approach to fabricating heteroatom‐doped microporous graphene exhibiting high performance and provides new insight into the lithium storage mechanism." @default.
• W4283585891 created "2022-06-28" @default.
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• W4283585891 date "2022-06-26" @default.
• W4283585891 modified "2023-10-10" @default.
• W4283585891 title "Anomalous Self‐Optimizing Microporous Graphene‐Based Lithium‐ion Battery Anode from Laser Activation of Small Organic Molecules" @default.
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• W4283585891 doi "https://doi.org/10.1002/smtd.202200280" @default.
• W4283585891 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35754163" @default.
• W4283585891 hasPublicationYear "2022" @default.
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