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Li + /Mg 2+ Hybrid‐Ion Batteries with Long Cycle Life and High Rate Capability Employing MoS 2 Nano Flowers as the Cathode Material
Author(s) -
Ju Yanming,
Meng Yuan,
Wei Yingjin,
Bian Xiaofei,
Pang Qiang,
Gao Yu,
Du Fei,
Liu Bingbing,
Chen Gang
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201604175
Subject(s) - cathode , anode , electrochemistry , materials science , battery (electricity) , intercalation (chemistry) , stripping (fiber) , chemical engineering , plating (geology) , ion , nanotechnology , inorganic chemistry , chemistry , composite material , electrode , organic chemistry , quantum mechanics , geophysics , engineering , geology , power (physics) , physics
The demand for large‐scale and safe energy storage is increasing rapidly due to the strong push for smartphones and electric vehicles. As a result, Li + /Mg 2+ hybrid‐ion batteries (LMIBs) combining a dendrite‐free deposition of Mg anode and Li + intercalation cathode have attracted considerable attention. Here, a LMIB with hydrothermal‐prepared MoS 2 nano flowers as cathode material was prepared. The battery showed remarkable electrochemical properties with a large discharge capacity (243 mAh g −1 at the 0.1 C rate), excellent rate capability (108 mAh g −1 at the 5 C rate), and long cycle life (87.2 % capacity retention after 2300 cycles). Electrochemical analysis showed that the reactions occurring in the battery cell involved Mg stripping/plating at the anode side and Li + intercalation at the cathode side with a small contribution from Mg 2+ adsorption. The excellent electrochemical performance and extremely safe cell system show promise for its use in practical applications.