Premium
Smartly Designed Hierarchical MnO 2 @Fe 3 O 4 /CNT Hybrid Films as Binder‐free Anodes for Superior Lithium Storage
Author(s) -
Yan DuJuan,
Zhu XiaoDong,
Gao XiaoTian,
Gu LiangLiang,
Feng YuJie,
Sun KeNing
Publication year - 2018
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201800922
Subject(s) - anode , materials science , lithium (medication) , nanoparticle , electrochemistry , nanotechnology , chemical engineering , diffusion , electrode , chemistry , medicine , engineering , endocrinology , physics , thermodynamics
Nowadays, the development of advanced anode materials is highly desirable for the increasing demand for high‐performance lithium‐ion batteries (LIBs). Nanostructured MnO 2 has received utmost attention due to high theoretical capacity (1230 mA h g −1 ), abundant resources, environmental benignity, and shortened electron and ion diffusion paths. Unfortunately, poor electronic conductivity and strong aggregation inclination of MnO 2 nanostructures result in disappointing electrochemical performances, which restrict their practical application as sole institute. Here, we propose smartly designed MnO 2 @Fe 3 O 4 /CNT hybrid films, in which MnO 2 nanosheets, Fe 3 O 4 nanoparticles and CNTs are hierarchically assembled in a unique stage of nanosheets–nanoparticles–nanotubes. The resulting MnO 2 @Fe 3 O 4 /CNT hybrid films can be directly used as anodes without any polymer binders, and exhibit significant synergistic interactions among three components, achieving excellent reversible capacity and rate performance.