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(NH 4 ) 2 V 7 O 16 Microbricks as a Novel Anode for Aqueous Lithium‐Ion Battery with Good Cyclability
Author(s) -
Ma Yining,
Wu Mingchen,
Jin Xiaodong,
Shu Rui,
Hu Chenchen,
Xu Tongxiang,
Li Jing,
Meng Xinyu,
Cao Xun
Publication year - 2021
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.202101431
Subject(s) - anode , aqueous solution , lithium (medication) , materials science , vanadium , battery (electricity) , ion , electrochemistry , inorganic chemistry , electrode , chemistry , medicine , power (physics) , physics , organic chemistry , quantum mechanics , endocrinology
Searching for novel anode materials to address the issues of poor cycle stability in the aqueous lithium‐ion battery system is highly desirable. In this work, ammonium vanadium bronze (NH 4 ) 2 V 7 O 16 with brick‐like morphology has been investigated as an anode material for aqueous lithium‐ion batteries and Li + /Na + hybrid ion batteries. The two novel full cell systems (NH 4 ) 2 V 7 O 16 ||Li 2 SO 4 ||LiMn 2 O 4 and (NH 4 ) 2 V 7 O 16 ||Na 2 SO 4 ||LiMn 2 O 4 both demonstrate good rate capability and excellent cycling performance. A capacity retention of 78.61 % after 500 cycles at 300 mA g −1 was demonstrated in the (NH 4 ) 2 V 7 O 16 ||Li 2 SO 4 ||LiMn 2 O 4 system, whereas no capacity attenuation is observed in the (NH 4 ) 2 V 7 O 16 ||Na 2 SO 4 ||LiMn 2 O 4 system. The reaction mechanisms of the (NH 4 ) 2 V 7 O 16 electrode and impedance variation of the two full cells were also researched. The excellent cycling stability suggests that layered (NH 4 ) 2 V 7 O 16 can be a promising anode material for aqueous rechargeable lithium‐ion batteries.