%0 Journal Article
%A Kim, Nahyeon
%A Park, Hyejeong
%A Yoon, Naeun
%A Lee, Jung Kyoo
%D 2018
%T Zeolite-Templated
Mesoporous Silicon Particles for
Advanced Lithium-Ion Battery Anodes
%U https://acs.figshare.com/articles/journal_contribution/Zeolite-Templated_Mesoporous_Silicon_Particles_for_Advanced_Lithium-Ion_Battery_Anodes/6086888
%R 10.1021/acsnano.8b01129.s001
%2 https://acs.figshare.com/ndownloader/files/10969550
%K silicon anodes
%K lithium-based batteries
%K electrochemical properties
%K rate capabilities
%K volume change
%K Coulombic efficiencies
%K Li-ion battery anodes
%K mesoporous silicon
%K zeolite-templated magnesiothermic reduction synthesis
%K zeolite Y
%K Zeolite-Templated Mesoporous Silicon Particles
%K cycle life
%K silicon nanoparticles
%K cycling stabilities
%K composite
%K Li ion diffusion rate
%K impedance build-up
%K mpSi particle
%K ZSM
%K 500 cycles
%K electrochemical responses
%K Advanced Lithium-Ion Battery Anodes
%K electrode thickness changes
%X For
the practical use of high-capacity silicon anodes in high-energy
lithium-based batteries, key issues arising from the large volume
change of silicon during cycling must be addressed by the facile structural
design of silicon. Herein, we discuss the zeolite-templated magnesiothermic
reduction synthesis of mesoporous silicon (mpSi) (mpSi-Y, -B, and
-Z derived from commercial zeolite Y, Beta, and ZSM-5, respectively)
microparticles having large pore volume (0.4–0.5 cm3/g), wide open pore size (19–31 nm), and small primary silicon
particles (20–35 nm). With these appealing mpSi particle structural
features, a series of mpSi/C composites exhibit outstanding performance
including excellent cycling stabilities for 500 cycles, high specific
and volumetric capacities (1100–1700 mAh g–1 and 640–1000 mAh cm–3 at 100 mA g–1), high Coulombic efficiencies (approximately 100%), and remarkable
rate capabilities, whereas conventional silicon nanoparticles (SiNP)/C
demonstrate limited cycle life. These enhanced electrochemical responses
of mpSi/C composites are further manifested by low impedance build-up,
high Li ion diffusion rate, and small electrode thickness changes
after cycling compared with those of SiNP/C composite. In addition
to the outstanding electrochemical properties, the low-cost materials
and high-yield processing make the mpSi/C composites attractive candidates
for high-performance and high-energy Li-ion battery anodes.
%I ACS Publications