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Microwave‐Assisted Preparation and Characterization of a Polyoxometalate‐Based Inorganic 2D Framework Anode for Enhancing Lithium‐Ion Battery Performance
Author(s) -
Nie YanMei,
Liang Shuang,
Yu WeiDong,
Yuan Hao,
Yan Jun
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.201800070
Subject(s) - anode , polyoxometalate , electrochemistry , lithium (medication) , materials science , redox , inorganic chemistry , ion , battery (electricity) , lithium ion battery , nanocomposite , chemical engineering , chemistry , electrode , nanotechnology , catalysis , organic chemistry , power (physics) , physics , quantum mechanics , engineering , endocrinology , medicine
Abstract A pure inorganic 2D network molybdophosphate, [Mn 3 Mo 12 O 24 (OH) 6 (HPO 3 ) 8 (H 2 O) 6 ] 4− ( 1 a ), synthesized through microwave irradiation with the existence of Mn 2+ and organic cations and isolated as [(CH 3 ) 2 NH 2 ] 3 Na[Mn 3 Mo 12 O 24 (OH) 6 (HPO 3 ) 8 (H 2 O) 6 ] ⋅ 12 H 2 O ( 1 ), is found to possess highly enhanced performance in lithium‐ion batteries’ anode materials. The molecule shows multielectron redox properties suitable for producing anode materials with a specific capacity of 602 mA h g −1 at 100 mA g −1 after 50 cycles in lithium‐ion batteries, although its specific capacity is the highest among all the reported pure inorganic 2D polyoxometalates to date, the cyclic stability is not that satisfactory. A hybrid nanocomposite of this 2D network and polypyrrole cations effectively reduces the capacity fading in initial cycles, and increases the stability and improves the electrochemical performance of lithium‐ion batteries as well.