TY - JOUR
T1 - Operando and three-dimensional visualization of anion depletion and lithium growth by stimulated Raman scattering microscopy
AU - Cheng, Qian
AU - Wei, Lu
AU - Liu, Zhe
AU - Ni, Nan
AU - Sang, Zhe
AU - Zhu, Bin
AU - Xu, Weiheng
AU - Chen, Meijie
AU - Miao, Yupeng
AU - Chen, Long Qing
AU - Min, Wei
AU - Yang, Yuan
N1 - Funding Information:
We acknowledge seed funding support from Columbia University’s Research Initiatives in Science & Engineering competition, started in 2004 to trigger high-risk, high-reward, and innovative collaborations in the basic sciences, engineering, and medicine. Y.Y. acknowledges support from startup funding by Columbia University. W.M. acknowledges support from the US Army Research Office (W911NF-12-1-0594), NIH Director’s New Innovator Award (1DP2EB016573) and R01 (EB020892), and the Camille and Henry Dreyfus Foundation. Z.L and L.-Q.C. acknowledge the support from the Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE), under the Award (DE-EE0007803). Y.Y and Q.C. also want to thank Prof. Alan West at Columbia University for his kind help.
Publisher Copyright:
© 2018, The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Visualization of ion transport in electrolytes provides fundamental understandings of electrolyte dynamics and electrolyte-electrode interactions. However, this is challenging because existing techniques are hard to capture low ionic concentrations and fast electrolyte dynamics. Here we show that stimulated Raman scattering microscopy offers required resolutions to address a long-lasting question: how does the lithium-ion concentration correlate to uneven lithium deposition? In this study, anions are used to represent lithium ions since their concentrations should not deviate for more than 0.1 mM, even near nanoelectrodes. A three-stage lithium deposition process is uncovered, corresponding to no depletion, partial depletion, and full depletion of lithium ions. Further analysis reveals a feedback mechanism between the lithium dendrite growth and heterogeneity of local ionic concentration, which can be suppressed by artificial solid electrolyte interphase. This study shows that stimulated Raman scattering microscopy is a powerful tool for the materials and energy field.
AB - Visualization of ion transport in electrolytes provides fundamental understandings of electrolyte dynamics and electrolyte-electrode interactions. However, this is challenging because existing techniques are hard to capture low ionic concentrations and fast electrolyte dynamics. Here we show that stimulated Raman scattering microscopy offers required resolutions to address a long-lasting question: how does the lithium-ion concentration correlate to uneven lithium deposition? In this study, anions are used to represent lithium ions since their concentrations should not deviate for more than 0.1 mM, even near nanoelectrodes. A three-stage lithium deposition process is uncovered, corresponding to no depletion, partial depletion, and full depletion of lithium ions. Further analysis reveals a feedback mechanism between the lithium dendrite growth and heterogeneity of local ionic concentration, which can be suppressed by artificial solid electrolyte interphase. This study shows that stimulated Raman scattering microscopy is a powerful tool for the materials and energy field.
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U2 - 10.1038/s41467-018-05289-z
DO - 10.1038/s41467-018-05289-z
M3 - Article
C2 - 30061610
AN - SCOPUS:85050821226
SN - 2041-1723
VL - 9
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 2942
ER -