Fig. 3: Biomimetic Na+ channels. | Nature Communications

Fig. 3: Biomimetic Na+ channels.

From: Bioinspired design of Na-ion conduction channels in covalent organic frameworks for quasi-solid-state sodium batteries

Fig. 3

a Zeta potential values of various COFs. b Electrostatic potential mappings of TPBD, TPDBD, and TPDBD-COO− (the white, blue, gray, and red spheres denote hydrogen, nitrogen, carbon, and oxygen, respectively). c Optimized coordination structures between NaTFSI and TPDBD and TPDBD-COO− (the white, blue, purple, gray, and red spheres denote hydrogen, nitrogen, sodium, carbon, and oxygen, respectively). d Bond lengths between NaTFSI and TPBD, TPDBD and TPDBD-COO−. e Schematic illustration of the bionic channel in TPDBD-CNa (the red spheres denote oxygen, and cyan sticks denote the covalent organic framework).

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