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Home Science Self-repairing interphase reconstructed in each cycle for highly reversible aqueous zinc batteries – Nature Communications
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Self-repairing interphase reconstructed in each cycle for highly reversible aqueous zinc batteries – Nature Communications

The functional electrolyte is achieved by dispersing a certain amount of CNQDs in 2 M ZnSO aqueous electrolyte. A typical CNQD structure was presented in Supplementary Fig. 1, which is composed of the condensed tri-s-triazine (tri-ring of CN) subunits connected through planar tertiary amino groups, possessing periodic pores of ~0.68 nm in the lattice. As characterized by TEM and AFM, the as-synthesized CNQD have a typical nanoplate morphology with an average lateral size of ~10 nm and a thickness of 1.5 nm (Supplementary Figs. 1 and 2). It is known that the CNQDs are colloidally well dispersed as a result of charging oxygen and nitrogen groups on the edge (Supplementary Fig. 3). Our study reveals that the CNQDs remain excellent dispersibility and stability in ZnSO aqueous electrolyte, no observable precipitation can be detected, at least over 8 months when the CNQDs content is below 1 mg mL (Supplementary Fig. 4). This might originate from the recharging of CNQDs by adsorbed Zn ions, screening interactions, and providing such high dispersibility even in high salt aqueous solutions.

 

The functional electrolyte is achieved by dispersing a certain amount…

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