%0 Journal Article
%A Liu, Haidong
%A Hu, Huating
%A Wang, Jun
%A Niehoff, Philip
%A He, Xin
%A Paillard, Elie-Elisée
%A Eder, Dominik
%A Winter, Martin
%A Li, Jie
%T Hierarchical Ternary MoO2/MoS2/Heteroatom-Doped Carbon Hybrid Materials for High-Performance Lithium-Ion Storage
%J ChemElectroChem
%V 3
%N 6
%@ 2196-0216
%C Weinheim
%I Wiley-VCH
%M FZJ-2017-07604
%P 922 - 932
%D 2016
%X The synthesis and electrochemical lithium-ion storage behavior of hierarchical MoO2/MoS2/heteroatom-doped carbon (MoO2/MoS2/HD-C) ternary hybrid have been studied. This ternary hybrid is composed of ultrafine MoO2 nanowires and single/few-layer MoS2 encapsulated by heteroatom-doped carbon, constituting secondary cauliflower-like microspheres. The synthesis is achieved through the synergistic interplay of a polymer and an ionic liquid as structure-directing agents and carbon sources, using a solvothermal reaction followed by a simple thermal treatment. In this unique architecture, each component synergistically acts with a specific purpose. The HD-C matrix with abundant defects and vacancies provides fast electronic conduction as well as interfacial storage, and buffers the volume changes during charging/discharging processes. The ultrasmall dimensions of both MoO2 nanowires and single/few-layered MoS2 components enable rapid Li+ transport in all directions, which is of great benefit to the reversibility of “conversion” reactions. The hierarchical secondary structures assure the robust stability upon long-term cycling. The ternary hybrid material exhibits enhanced Li+-storage performance as well as reversible capacity, rate capability, and cycling stability. A high reversible specific capacity of 1147 mA h g−1 is delivered at 50 mA g−1 together with excellent cycling stability, and 841 mA h g−1 can be retained after 1000 cycles at 500 mA g−1.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000380045400013
%R 10.1002/celc.201600062
%U https://juser.fz-juelich.de/record/840038