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Crystalline high‐entropy ceramics (CHC), a new class of solids that contain five or more elemental species, have attracted increasing interest because of their unique structure and potential applications. Up to now, only a couple of CHCs (e.g., high‐entropy metal oxides and diborides) have been successfully synthesized. Here, a new strategy for preparing high‐entropy metal nitride (HEMN‐1) is proposed...
An in situ coupling approach is developed to create a new highly efficient and durable cobalt‐based electrocatalyst for the oxygen evolution reaction (OER). Using a novel cyclotetramerization, a task‐specific bimetallic phthalocyanine‐based nanoporous organic framework is successfully built as a precursor for the carbonization synthesis of a nonprecious OER electrocatalyst. The resultant material...
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