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One‐Nanometer‐Precision Control of Al 2 O 3 Nanoshells through a Solution‐Based Synthesis Route
Author(s) -
Zhang Wei,
Chi ZiXiang,
Mao WenXin,
Lv RongWen,
Cao AnMin,
Wan LiJun
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201406856
Subject(s) - nanoshell , nanometre , materials science , nanomaterials , nanotechnology , coating , oxide , surface modification , metal , core (optical fiber) , thin film , atomic layer deposition , layer (electronics) , chemical engineering , nanoparticle , composite material , metallurgy , engineering
Abstract Forming uniform metal oxide nanocoatings is a well‐known challenge in the construction of core–shell type nanomaterials. Herein, by using buffer solution as a specific reaction medium, we demonstrate the possibility to grow thin nanoshells of metal oxides, typically Al 2 O 3 , on different kinds of core materials, forming a uniform surface‐coating layer with thicknesses achieving one nanometer precision. The application of this methodology for the surface modification of LiCoO 2 shows that a thin nanoshell of Al 2 O 3 can be readily tuned on the surface for an optimized battery performance.