Abstract
The stress inevitably imposed during electrochemical reactions is expected to fundamentally affect the electrochemistry, phase behavior and morphology of electrodes in service. Here, we show a strong stress-composition coupling in lithium binary alloys during the lithiation of tin-tin oxide core-shell nanoparticles. Using in situ graphene liquid cell electron microscopy imaging, we visualise the generation of a non-uniform composition field in the nanoparticles during lithiation. Stress models based on density functional theory calculations show that the composition gradient is proportional to the applied stress. Based on this coupling, we demonstrate that we can directionally control the lithium distribution by applying different stresses to lithium alloy materials. Our results provide insights into stress-lithium electrochemistry coupling at the nanoscale and suggest potential applications of lithium alloy nanoparticles.
| Original language | English |
|---|---|
| Number of pages | 1 |
| Journal | Nature communications |
| Volume | 10 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2019 Jul 31 |
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ASJC Scopus subject areas
- Chemistry(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Physics and Astronomy(all)
Cite this
Strong stress-composition coupling in lithium alloy nanoparticles. / Seo, Hyeon Kook; Park, Jae Yeol; Chang, Joon Ha; Dae, Kyun Sung; Noh, Myoung Sub; Kim, Sung Soo; Kang, Chong-Yun; Zhao, Kejie; Kim, Sangtae; Yuk, Jong Min.
In: Nature communications, Vol. 10, No. 1, 31.07.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Strong stress-composition coupling in lithium alloy nanoparticles
AU - Seo, Hyeon Kook
AU - Park, Jae Yeol
AU - Chang, Joon Ha
AU - Dae, Kyun Sung
AU - Noh, Myoung Sub
AU - Kim, Sung Soo
AU - Kang, Chong-Yun
AU - Zhao, Kejie
AU - Kim, Sangtae
AU - Yuk, Jong Min
PY - 2019/7/31
Y1 - 2019/7/31
N2 - The stress inevitably imposed during electrochemical reactions is expected to fundamentally affect the electrochemistry, phase behavior and morphology of electrodes in service. Here, we show a strong stress-composition coupling in lithium binary alloys during the lithiation of tin-tin oxide core-shell nanoparticles. Using in situ graphene liquid cell electron microscopy imaging, we visualise the generation of a non-uniform composition field in the nanoparticles during lithiation. Stress models based on density functional theory calculations show that the composition gradient is proportional to the applied stress. Based on this coupling, we demonstrate that we can directionally control the lithium distribution by applying different stresses to lithium alloy materials. Our results provide insights into stress-lithium electrochemistry coupling at the nanoscale and suggest potential applications of lithium alloy nanoparticles.
AB - The stress inevitably imposed during electrochemical reactions is expected to fundamentally affect the electrochemistry, phase behavior and morphology of electrodes in service. Here, we show a strong stress-composition coupling in lithium binary alloys during the lithiation of tin-tin oxide core-shell nanoparticles. Using in situ graphene liquid cell electron microscopy imaging, we visualise the generation of a non-uniform composition field in the nanoparticles during lithiation. Stress models based on density functional theory calculations show that the composition gradient is proportional to the applied stress. Based on this coupling, we demonstrate that we can directionally control the lithium distribution by applying different stresses to lithium alloy materials. Our results provide insights into stress-lithium electrochemistry coupling at the nanoscale and suggest potential applications of lithium alloy nanoparticles.
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U2 - 10.1038/s41467-019-11361-z
DO - 10.1038/s41467-019-11361-z
M3 - Article
VL - 10
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
ER -