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Proton-assisted calcium-ion storage in aromatic organic molecular crystal with coplanar stacked structure
Rechargeable calcium-ion batteries are intriguing alternatives for use as post-lithium-ion batteries. However, the high charge density of divalent Ca2+ establishes a strong electrostatic interaction with the hosting lattice, which results in low-capacity Ca-ion storage. The ionic radius of Ca2+ further leads to sluggish ionic diffusion, hindering high-rate capability performances. Here, we report 5,7,12,14-pentacenetetrone (PT) as an organic crystal electrode active material for aqueous Ca-iondoi:10.1038/s41467-021-22698-9 pmid:33893314 fatcat:zbtykcwyefgevo4lppd6qdlupm