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Interacting Carbon Nitride and Titanium Carbide Nanosheets for High‐Performance Oxygen Evolution
Author(s) -
Ma Tian Yi,
Cao Jian Liang,
Jaroniec Mietek,
Qiao Shi Zhang
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201509758
Subject(s) - oxygen evolution , materials science , graphitic carbon nitride , nitride , carbide , electrochemistry , titanium carbide , carbon nitride , electrocatalyst , chemical engineering , catalysis , carbon fibers , nanotechnology , transition metal , photocatalysis , chemistry , electrode , metallurgy , composite material , organic chemistry , layer (electronics) , composite number , engineering
Free‐standing flexible films, constructed from two‐dimensional graphitic carbon nitride and titanium carbide (with MXene phase) nanosheets, display outstanding activity and stability in catalyzing the oxygen‐evolution reaction in alkaline aqueous system, which originates from the Ti–N x motifs acting as electroactive sites, and the hierarchically porous structure with highly hydrophilic surface. With this excellent electrocatalytic ability, comparable to that of the state‐of‐the‐art precious‐/transition‐metal catalysts and superior to that of most free‐standing films reported to date, they are directly used as efficient cathodes in rechargeable zinc–air batteries. Our findings reveal that the rational interaction between different two‐dimensional materials can remarkably promote the oxygen electrochemistry, thus boosting the entire clean energy system.