Ravi Kumar
Brown University
16 Papers
49 Citations
Ravi Kumar is an academic researcher from Brown University. The author has contributed to research in topics: Silicon & Sialon. The author has an hindex of 9, co-authored 16 publications. Previous affiliations of Ravi Kumar include Indian Institute of Technology Kanpur & Indian Institutes of Technology.
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Papers
In Situ and Operando Investigations of Failure Mechanisms of the Solid Electrolyte Interphase on Silicon Electrodes
Ravi Kumar,Anton Tokranov,Brian W. Sheldon,Xingcheng Xiao,Zhuangqun Huang,Chunzeng Li,Thomas Mueller +6 more
TL;DR: In this paper, the authors demonstrate a new approach for applying controlled strains to SEI films with patterned Si electrodes, in conjunction with direct observations of mechanical degradation using in operando atomic force microscopy.
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Failure progression in the solid electrolyte interphase (SEI) on silicon electrodes
TL;DR: In this paper, a novel approach is utilized to apply controlled strains to SEI films on patterned Si electrodes, and the experimental and modeling results indicate that the inner SEI layer is sufficient for passivation of the Si surface.
100
Control and Optimization of the Electrochemical and Mechanical Properties of the Solid Electrolyte Interphase on Silicon Electrodes in Lithium Ion Batteries
TL;DR: In this article, the formation of the solid electrolyte interphase (SEI) on Si is examined in detail using several in situ techniques, and the results show that employing different conditions during the first lithiation cycle produces SEI films with substantially different properties.
99
Strain-Induced Lithium Losses in the Solid Electrolyte Interphase on Silicon Electrodes
TL;DR: In-plane strains in the SEI layer lead to substantial increases in the amount of inorganic phase formation, without significantly affecting the overall SEI thickness, according to the experimental results.
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Internal Microstructural Changes and Stress Evolution in Silicon Nanoparticle Based Composite Electrodes
TL;DR: In this paper, the authors compared two different binders (sodium alginate and carboxymethyl cellulose) and found that the stiffer Na-Alginate binder leads to higher stresses than the CMC, in electrodes with otherwise similar compositions.
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