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Carbon‐Incorporated Nickel–Cobalt Mixed Metal Phosphide Nanoboxes with Enhanced Electrocatalytic Activity for Oxygen Evolution

Hollow nanostructures have attracted increasing research interest in electrochemical energy storage and conversion owing to their unique structural features. However, the synthesis of hollow nanostructured metal phosphides, especially nonspherical hollow nanostructures, is rarely reported. Herein, w...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-03, Vol.56 (14), p.3897-3900
Main Authors: He, Peilei, Yu, Xin‐Yao, Lou, Xiong Wen (David)
Format: Article
Language:English
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Summary:Hollow nanostructures have attracted increasing research interest in electrochemical energy storage and conversion owing to their unique structural features. However, the synthesis of hollow nanostructured metal phosphides, especially nonspherical hollow nanostructures, is rarely reported. Herein, we develop a metal–organic framework (MOF)‐based strategy to synthesize carbon incorporated Ni–Co mixed metal phosphide nanoboxes (denoted as NiCoP/C). The oxygen evolution reaction (OER) is selected as a demonstration to investigate the electrochemical performance of the NiCoP/C nanoboxes. For comparison, Ni–Co layered double hydroxide (Ni–Co LDH) and Ni–Co mixed metal phosphide (denoted as NiCoP) nanoboxes have also been synthesized. Benefiting from their structural and compositional merits, the as‐synthesized NiCoP/C nanoboxes exhibit excellent electrocatalytic activity and long‐term stability for OER. Box clever: ZIF‐67@layered double hydroxide (LDH) nanoboxes are synthesized from highly uniform ZIF‐67 nanocubes through reaction with Ni(NO3)2 at room temperature. After phosphidation with NaH2PO2, the ZIF‐67@LDH nanoboxes are transformed into NiCoP/C nanoboxes, which have enhanced performance as an electrocatalyst for the oxygen evolution reaction (OER).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201612635