title: Facile and generalized encapsulations of inorganic nanocrystals with nitrogen-doped carbonaceous coating for multifunctionality.
abstract: A simple strategy toward versatile encapsulations of inorganic nanocrystals, through a green hydrothermal treatment of commercial polyurethane sponge, was developed. This approach enables us to realize a general method to form a surface-adherent, N-doped coating with a controllable thickness for well-defined structures. These composites exhibit active properties in optical applications and energy storage. For example, N-doped carbon encapsulated Fe2O3 nanoboxes show a very high discharge capacity and outstanding cyclability, and the capacity still remained at 1086 mA h g(-1) at a current density of 400 mA g(-1) after 200 cycles. Our results described here provide a simple surface coating technique to design various functional nanostructures.
authors.affiliation: Tsinghua University, Beijing, China. wangxun@mail.tsinghua.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Jingchao
authors.initials: J
authors.lastname: Zhang
authors.forename: Shitong
authors.initials: S
authors.lastname: Wang
authors.forename: Xiaobin
authors.initials: X
authors.lastname: Xu
authors.forename: Zhicheng
authors.initials: Z
authors.lastname: Zhang
authors.forename: Pengpeng
authors.initials: P
authors.lastname: Wang
authors.forename: Zilong
authors.initials: Z
authors.lastname: Tang
authors.forename: Xun
authors.initials: X
authors.lastname: Wang