Facile Synthesis of Free-Standing Silicon Membranes
with Three-Dimensional Nanoarchitecture for Anodes of Lithium Ion
Batteries
Fan Xia
Seong
Been Kim
Huanyu Cheng
Jung Min Lee
Taeseup Song
Yonggang Huang
John A. Rogers
Ungyu Paik
Won Il Park
10.1021/nl401629q.s001
https://acs.figshare.com/articles/journal_contribution/Facile_Synthesis_of_Free_Standing_Silicon_Membranes_with_Three_Dimensional_Nanoarchitecture_for_Anodes_of_Lithium_Ion_Batteries/2397490
We propose a facile method for synthesizing
a novel Si membrane
structure with good mechanical strength and three-dimensional (3D)
configuration that is capable of accommodating the large volume changes
associated with lithiation in lithium ion battery applications. The
membrane electrodes demonstrated a reversible charge capacity as high
as 2414 mAh/g after 100 cycles at current density of 0.1 C, maintaining
82.3% of the initial charge capacity. Moreover, the membrane electrodes
showed superiority in function at high current density, indicating
a charge capacity >1220 mAh/g even at 8 C. The high performance
of
the Si membrane anode is assigned to their characteristic 3D features,
which is further supported by mechanical simulation that revealed
the evolution of strain distribution in the membrane during lithiation
reaction. This study could provide a model system for rational and
precise design of the structure and dimensions of Si membrane structures
for use in high-performance lithium ion batteries.
2013-07-10 00:00:00
membrane electrodes
novel Si membrane structure
Si membrane structures
lithium ion batteries
Lithium Ion BatteriesWe
Si membrane anode
charge capacity
3 D features
lithium ion battery applications