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Dive into the research topics where Constanza Hwang is active.

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Featured researches published by Constanza Hwang.


220th ECS Meeting | 2012

Solid State Multinuclear Magnetic Resonance Investigation of Electrolyte Decomposition Products on Lithium Ion Electrodes

J.H.S.R. DeSilva; Victor Udinwe; Paul J. Sideris; Marshall C. Smart; Frederick C. Krause; Constanza Hwang; Kiah Smith; Steve Greenbaum

Solid electrolyte interphase (SEI) formation in lithium ion cells prepared with advanced electrolytes is investigated by solid state multinuclear (7Li, 19F, 31P) magnetic resonance (NMR) measurements of electrode materials harvested from cycled cells subjected to an accelerated aging protocol. The electrolyte composition is varied to include the addition of fluorinated carbonates and triphenyl phosphate (TPP, a flame retardant). In addition to species associated with LiPF6 decomposition, cathode NMR spectra are characterized by the presence of compounds originating from the TPP additive. Substantial amounts of LiF are observed in the anodes as well as compounds originating from the fluorinated carbonates.


Journal of The Electrochemical Society | 2012

Electrochemical Analysis of Li-Ion Cells Containing Triphenyl Phosphate

Ronald P. Dunn; Janak Kafle; Frederick C. Krause; Constanza Hwang; B. V. Ratnakumar; Marshall C. Smart; Brett L. Lucht


Meeting Abstracts | 2013

Wide Operating Temperature Range Electrolytes for High Voltage and High Specific Energy Li-Ion Cells

Marshall C. Smart; Constanza Hwang; Frederick C. Krause; Jess Soler; William West; B. V. Ratnakumar; Khalil Amine


227th ECS Meeting (May 24-28, 2015) | 2015

The Impact of Additives upon the Propensity of Lithium Plating at Low Temperatures in Mcmb-LiNiCoAlO2-Based Li-Ion Cells with Methyl Propionate-Based Electrolytes

Marshall C. Smart; Frederick C. Krause; John-Paul Jones; Constanza Hwang; Larry Whitcanack; B. V. Ratnakumar; Michael Tomcsi; Vincent Visco


225th ECS Meeting (May 11-15, 2014) | 2014

The Development of Electrolytes with Flame Retardant Additives for Multiple Lithium-Ion Chemistries

Frederick C. Krause; John-Paul Jones; Jessica Soler; Constanza Hwang; Ratnakumar V. Bugga; G. K. Surya Prakash; Marshall C. Smart


224th ECS Meeting (October 27 – November 1, 2013) | 2014

The Use of Methyl Butyrate-Based Electrolytes with Additives to Enable the Operation of Li-Ion Cells with High Voltage Cathodes over a Wide Temperature Range

Frederick C. Krause; Constanza Hwang; B. V. Ratnakumar; Marshall C. Smart; Dennis W. McOwen; Wesley A. Henderson


Meeting Abstracts | 2013

Effect of Low Cell Voltages on the Performance of MCMB anode and LiNi0.8Co0.2O2 cathode

Ratnakumar V. Bugga; Marshall C. Smart; Frederick C. Krause; Constanza Hwang; Patrick Degrosse; Stu Santee; Frank Puglia


Archive | 2012

Advanced Lithium-ion Batteries with High Specific Energy and Improved Safety for Nasa's Missions

William West; Marshall C. Smart; Jess Soler; Charlie Krause; Constanza Hwang; Ratnakumar V. Bugga


Archive | 2012

Performance Testing of Yardney MCMB-LiNiCoAlO2 Lithium-ion Cells Possessing Electrolytes with Improved Safety Characteristics

Marshall C. Smart; Larry Whitcanack; Frederick C. Krause; Constanza Hwang; Ratnakumar V. Bugga; Stuart Santee; Frank Puglia; Rob Gitzendanner


Meeting Abstracts | 2012

Improved Wide Operating Temperature Range of LiNiCoAiO2-based Li-ion Cells with Methyl Propionate-based Electrolytes

Marshall C. Smart; Michael Tomcsi; Constanza Hwang; Larry Whitcanack; Ratnakumar V. Bugga; Mikito Nagata; Vince Visco; Hisashi Tsukamoto

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Marshall C. Smart

California Institute of Technology

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Frederick C. Krause

University of Southern California

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Ratnakumar V. Bugga

California Institute of Technology

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B. V. Ratnakumar

California Institute of Technology

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Larry Whitcanack

California Institute of Technology

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Jess Soler

California Institute of Technology

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John-Paul Jones

California Institute of Technology

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Kiah Smith

University of Southern California

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Steve Greenbaum

City University of New York

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William West

California Institute of Technology

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