A swelling-suppressed Si/SiOx nanosphere lithium storage material fabricated by graphene envelopment.
A swelling-suppressed, Si nanocrystals-embedded SiOx nanospheres lithium storage material was prepared by graphene envelopment. The free void spaces formed between the graphene envelope and Si/SiOx nanospheres effectively accommodated the volume changes of Si/SiOx nanospheres during cycling, which significantly suppresses the swelling behavior and improves the capacity retention up to 200 cycles.
Department of Energy Engineering, Hanyang University, Seoul, 133-791, Republic of Korea. khansu@hanyang.ac.kr.
Hyundong
H
Yoo
Eunjun
E
Park
Hyekyoung
H
Kim
Juhye
J
Bae
Hankwon
H
Chang
Hee Dong
HD
Jang
Hansu
H
Kim