Using g-C3N4 nanorings as self-sacrificial template and nitrogen source, polydopamine as carbon source, novel nitrogen-doped carbon nanorings (N-CNRs) with hollow structure and biconcave morphology are created by confined pyrolysis strategy, which performs an enhanced potassium storage property.
X. Pan, H. Bi, X. Wang, Z. Zhao, L. Ai and J. Qiu, Chem. Commun., 2025, Accepted Manuscript , DOI: 10.1039/D5CC03398E
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