Open AccessHierarchical porous ZnMn 2 O 4 derived from cotton substance as high‐performance lithium ion battery anode
Author(s) -
Zhao Chenhao,
Shen Ye,
Qiu Sheng'en,
Hu Zhibiao,
Liu Kaiyu
Publication year - 2016
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0086
Subject(s) - calcination , anode , materials science , porosity , electrochemistry , chemical engineering , nanoparticle , lithium (medication) , ion , specific surface area , adsorption , nanotechnology , composite material , chemistry , catalysis , organic chemistry , electrode , medicine , endocrinology , engineering
Hierarchical porous ZnMn 2 O 4 has been prepared by an initial cotton template and subsequent calcination route. The as‐prepared hierarchical porous ZnMn 2 O 4 composed of numerous nanoparticles well inherit the fibre‐like structure of cotton, and these nanoparticles have a size of ∼20–50 nm. The N 2 adsorption–desorption test indicates this ZnMn 2 O 4 has a Brunauer–Emmett–Teller surface area of ∼16.7084 m 2 g −1 and average pore size of ∼27.0 nm. As lithium ion battery anodes, the ZnMn 2 O 4 can deliver a discharge capacity of 674.9 mAh g −1 after 200 cycles at current density of 200 mA g −1 . Even at 1000 mA g −1 , this ZnMn 2 O 4 still shows a stable discharge capacity of 541.5 mAh g −1 . These promising electrochemical performances may be attributed to its unique hierarchical porous structure which helps to accelerate the ions transportation and elevate the structure stability.