203 citations · 733 across the 8 of their papers we have counts for
9 papers
Measurement of Volume Changes and Associated Stresses in Ge Electrodes Due to Na/Na Redox Reactions
Subhajit Rakshit, Akshay S. Pakhare, Olivia Ruiz +5
In situ electrochemical cells were assembled with an amorphous germanium (a-Ge) film as working electrode and sodium foil as reference and counter electrode. The stresses generated…
Effect of Decreasing Cobalt Content on the Electrochemical Properties and Structural Stability of Li_(1-x)Ni_(y)Co_(z)Al_(0.05)O_(2) Type Cathode Materials
Kamalika Ghatak, Hemant Kumar, Siva Nadimpalli +1
In Lithium ion batteries (LIBs), proper design of cathode materials influences its intercalation behavior, overall cost, structural stability, and its impact on environment. At pre…
Investigation of Initial Lithiation of Silicon (100) Using Solid-State 7Li NMR
Myeonghun Song, Siva P. V. Nadimpalli, Vijay A. Sethuraman +3
Structural changes in amorphous LixSi during the initial lithiation of single crystal Si to amorphous LixSi were investigated as a function of Li flux and total charge using solid-…
Stress Evolution in Lithium-ion Composite Electrodes during Electrochemical Cycling and Resulting Internal Pressures on the Cell Casing
Siva P. V. Nadimpalli, Vijay A. Sethuraman, Daniel P. Abraham +2
Composite cathode coatings made of a high energy density layered oxide (Li1.2Ni0.15Mn0.55Co0.1O2, theoretical capacity ~377 mAh/g), polyvinylidene fluoride (PVdF) binder, and elect…
Real-time Stress Measurements in Germanium Thin Film Electrodes during Electrochemical Lithiation/delithiation Cycling
Siva P. V. Nadimpalli, Rajasekhar Tripuraneni, Vijay A. Sethuraman
An in situ study of stress evolution and mechanical behavior of germanium as a lithium-ion battery electrode material is presented. Thin films of germanium are cycled in a half-cel…
Measurement and modeling of the mechanical and electrochemical response of amorphous Si thin film electrodes during cyclic lithiation
Giovanna Bucci, Siva P. V. Nadimpalli, Vijay A. Sethuraman +2
A combination of experimental measurements and numerical simulations are used to characterize the mechanical and electrochemical response of thin film amorphous Si electrodes durin…
On plastic deformation and fracture in Si films during electrochemical lithiation/delithiation cycling
Siva P. V. Nadimpalli, Vijay A. Sethuraman, Giovanna Bucci +3
An in situ study of deformation, fracture, and fatigue behavior of silicon as a lithium-ion battery electrode material is presented. Thin films (100-200 nm) of silicon are cycled i…
Stress Evolution in Composite Silicon Electrodes during Lithiation/Delithiation
Vijay A. Sethuraman, Annam Nguyen, Michael J. Chon +6
We report real-time average stress measurements on composite silicon electrodes made with two different binders [Carboxymethyl cellulose (CMC), and polyvinylidene fluoride (PVDF)]…
Quantifying Capacity Loss due to Solid-Electrolyte-Interphase Layer Formation on Silicon Negative Electrodes in Lithium-ion Batteries
Siva P. V. Nadimpalli, Vijay A. Sethuraman, Swapnil Dalavi +4
Charge lost per unit surface area of a silicon electrode due to the formation of solid-electrolyte-interphase (SEI) layer during initial lithiation was quantified, and the species…