Ferrocene
as a Novel Additive to Enhance the Lithium-Ion Storage Capability
of SnO2/Graphene Composite
Posted on 2019-08-23 - 17:50
Improving the reversibility
of conversion reaction is a promising way to enhance the lithium-ion
storage capability of SnO2-based anodes. Herein, we report
ferrocene as a novel additive to improve the Li-ion storage performance
of the SnO2/graphene (SnO2/G) composite. Through
a simple mixing method, ferrocene can be uniformly dispersed into
the SnO2/G electrode. It is found that the ferrocene additive
can effectively suppress the agglomeration of Sn/SnO2 and
retain the nanoscale Sn/Li2O interface. Furthermore, metallic
Fe is formed from ferrocene in the discharge process and acts as a
catalyst to promote the reversible conversion between Sn/Li2O and SnO2. As a result, the SnO2/G electrode
with the addition of 10 wt % ferrocene (10ü-SnO2/G) exhibits
a superior Li-ion storage performance. It displays a reversible capacity
of up to 1084.5 mAh g–1 at 0.1 A g–1 after 150 cycles with a good rate capability (752 mAh g–1 at 1 A g–1). In addition, the 10ü-SnO2/G electrode can retain a capacity of 787.2 mAh g–1 at 0.5 A g–1 after 220 cycles. This work demonstrates
the promising additive of ferrocene in enhancing the reversible capacity
of SnO2-based anodes for lithium-ion batteries.
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Zhang, Siyu; Liang, Beirong; Fan, Yu; Wang, Junjie; Liang, Xianqing; Huang, Haifu; et al. (2019). Ferrocene
as a Novel Additive to Enhance the Lithium-Ion Storage Capability
of SnO2/Graphene Composite. ACS Publications. Collection. https://doi.org/10.1021/acsami.9b09363
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AUTHORS (9)
SZ
Siyu Zhang
BL
Beirong Liang
YF
Yu Fan
JW
Junjie Wang
XL
Xianqing Liang
HH
Haifu Huang
DH
Dan Huang
WZ
Wenzheng Zhou
JG
Jin Guo