Premium
General Self‐Template Synthesis of Transition‐Metal Oxide and Chalcogenide Mesoporous Nanotubes with Enhanced Electrochemical Performances
Author(s) -
Wang Huan,
Zhuo Sifei,
Liang Yu,
Han Xiling,
Zhang Bin
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201603197
Subject(s) - kirkendall effect , mesoporous material , materials science , chalcogenide , oxide , transition metal , oxygen evolution , template method pattern , nanotechnology , chemical engineering , non blocking i/o , electrochemistry , nanotube , cobalt oxide , cobalt , electrocatalyst , catalysis , chemistry , carbon nanotube , electrode , organic chemistry , engineering , metallurgy
The development of a general strategy for synthesizing hierarchical porous transition‐metal oxide and chalcogenide mesoporous nanotubes, is still highly challenging. Herein we present a facile self‐template strategy to synthesize Co 3 O 4 mesoporous nanotubes with outstanding performances in both the electrocatalytic oxygen‐evolution reaction (OER) and Li‐ion battery via the thermal‐oxidation‐induced transformation of cheap and easily‐prepared Co‐Asp(cobalt–aspartic acid) nanowires. The initially formed thin layers on the precursor surfaces, oxygen‐induced outward diffusion of interior precursors, the gas release of organic oxidation, and subsequent Kirkendall effect are important for the appearance of the mesoporous nanotubes. This self‐template strategy of low‐cost precursors is found to be a versatile method to prepare other functional mesoporous nanotubes of transition‐metal oxides and chalcogenides, such as NiO, NiCo 2 O 4 , Mn 5 O 8 , CoS 2 and CoSe 2 .