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Search Publications by: Saya Takeuchi (Assoc)

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Displaying 1 - 12 of 12

High Sulfur Loading and Capacity Retention in Bilayer Garnet Sulfurized-Polyacrylonitrile/Lithium-Metal Batteries with Gel Polymer Electrolytes

September 24, 2023
Author(s)
Changmin Shi, Saya Takeuchi, George Alexander, Tanner Hamann, Jonathan O'Neill, Joseph A. Dura, Eric Wachsman
Abstract The cubic‐garnet (Li 7La 3Zr 2O 12, LLZO) lithium–sulfur battery shows great promise in the pursuit of achieving high energy densities. The sulfur used in the cathodes is abundant, inexpensive, and possesses high specific capacity. In addition

3D Asymmetric Bilayer Garnet-Hybridized High-Energy-Density Lithium-Sulfur Batteries

January 11, 2023
Author(s)
Changmin Shi, Tanner Hamann, Saya Takeuchi, George Alexander, Adelaide M. Nolan, Matthew Limpert, Zhezhen Fu, Jonathan O'Neill, Griffin Godbey, Joseph A. Dura, Eric Wachsman
Lithium garnet Li 7La 3Zr 2O 12 (LLZO) with high ionic conductivity and chemical stability against a Li metal anode is considered one of the most promising solid electrolytes for lithium-sulfur batteries. However, an infinite charge time resulting in low

Engineered Sulfur-MoS2-Graphene Heterostructure Cathodes for Diagnostics of Nanoscale Electrochemical Processes in High Energy Density Li-S Batteries

August 5, 2019
Author(s)
Vladimir P. Oleshko, William R. McGehee, Saya Takeuchi, Siyuan Zhang, Andrei A. Kolmakov, Jabez J. McClelland, Christopher L. Soles
Lithium-sulfur (Li-S) batteries have recently attracted enormous attention because of high theoretical specific energy (2600 Wh kg-1) and high specific capacity (1672 mAhg-1), as well as the low cost, natural abundance, and nontoxicity of elemental sulfur

Effect of oxygen pressure on structure and ionic conductivity of epitaxial Li0.33La0.55TiO3 solid electrolyte thin films produced by pulsed laser deposition

December 16, 2016
Author(s)
Leonid A. Bendersky, Bharathi Kamala, Haiyan Tan, Saya Takeuchi, Haoting Shen, Jongmoon Shin, I. Takeuchi
We report on the ionic conductivity and the effect of oxygen partial pressure during the growth of Li0.33La0.55TiO3 (LLTO) epitaxial films grown on SrTiO3 (STO) (100) and (111) substrates and explore some distinct conductivity behavior. The films are

Communication-Comparison of Nanoscale Focused Ion Beam and Electrochemical Lithiation in beta-Sn Microspheres

December 5, 2016
Author(s)
Saya Takeuchi, William R. McGehee, Jennifer L. Schaefer, Truman M. Wilson, Kevin A. Twedt, Christopher L. Soles, Vladimir P. Oleshko, Eddie H. Chang, Jabez J. McClelland
The development of Li focused ion beams (Li-FIB) enables controlled Li ion insertion into materials with nanoscale resolution. We take the first step toward establishing the relevance of the Li-FIB for studies of ion dynamics in electrochemically active

Structural study of epitaxial LiCoO2 films grown by PLD on single crystal SrTiO3 substrates

May 24, 2016
Author(s)
Leonid A. Bendersky, Zhipeng Li, S. Yasui, Saya Takeuchi, Adam A. Creuziger, S. Maruyama, Andrew A. Herzing, I Takeuchi
Epitaxial LiCoO2 (LCO) thin films of different orientations were
 fabricated by pulsed laser deposition (PLD) in order to model single-crystal
 behavior of intercalation cathodes during electrochemical reactions. This paper demonstrates that
(1) epitaxial