Results 231 to 240 of about 68,370 (266)

Li ion diffusion dynamics on Li oxides and peroxides surfaces

Materials Letters, 2017
Abstract Li ion diffusion in the discharge products of the Li-O2 batteries is relevant to the performance of the battery. In this paper, Li ad-atom and Li-vacancy diffusion at the Li2O and Li2O2 surfaces are studied from first principles calculations. Li diffusion are considered on the energetically most favorable surfaces Li2O-(111) and Li2O2 (11
H.W. Wang, Z.F. Tian, C.Y. Ouyang
openaire   +1 more source

NMR study on the Li+ ion diffusion in LiCuO2 with layered structure

Solid State Ionics, 2005
Abstract The temperature dependence of the 7 Li–NMR line width of LiCuO 2 was measured. The line widths were constant at low temperature, while a narrowing in the line widths was observed above 370 K. The results are explained by a model of thermally activated diffusion of Li + ions.
Koichi Nakamura, Toshihiro Moriga, Akiyoshi Sumi, Yoshihiro Kashu, Yoshitaka Michihiro, Ichiro Nakabayashi, Tatsuo Kanashiro   +6 more
openaire   +1 more source

Diffusion of Li-ions in rutile. An ab initio study

Solid State Ionics, 2003
Ab initio calculations of lithium diffusion into titanium dioxide in the form of rutile are presented. An analysis of the site preference for intercalation and diffusion pathways of Li-ions is performed. The expansion of the host structure on Li-insertion is found to contribute to the enhanced diffusion of Li-ions along the tetragonal c direction.
openaire   +1 more source

Lithium Diffusion Mapping in Cathode Materials for Li-Ion Batteries

ECS Meeting Abstracts, 2010
Abstract not Available.
Nina Balke, Stephen Jesse, Anna Morozovska, Eugene Eliseev, Ding-Wen Chung, Yoongu Kim, Leslie Adamczyk, Edwin Garcia, Nancy J. Dudney, Sergei Kalinin   +9 more
openaire   +1 more source

Efforts on enhancing the Li-ion diffusion coefficient and electronic conductivity of titanate-based anode materials for advanced Li-ion batteries

Energy Storage Materials, 2020
Abstract Titanate-based compounds have been considered as a hopeful family of anode materials for high-performance lithium-ion batteries due to the “zero-strain” characteristics, low cost, excellent safety and high potential plateau, and free generation of metallic Li and solid electrolyte interphase film. Nonetheless, the large-scale applications of
Ting-Feng Yi, Ting-Ting Wei, Ying Li, Yan-Bing He, Zhen-Bo Wang   +4 more
openaire   +1 more source

Simulating the Reactivity, Structure, and Li-Ion Diffusivity at the Electrode Electrolyte Interfaces Generated in Li-Ion Batteries

ECS Meeting Abstracts
Conventional organic electrolytes in Li-ion batteries have an electrochemical window that is too narrow, leading to a decomposition at the cathode and anode surfaces, especially at high voltages. The breakdown of the electrolyte leads to the formation of cathode-electrolyte interphase (CEI) and solid-electrolyte interface (SEI) at ...
Nicole Adelstein, Wonseok Jeong, Stephen Eric Weitzner, Steven Jay Jue, Spencer Kirkman, Liwen Wan   +5 more
openaire   +1 more source

High Li-ion diffusion coefficient in LiMn1.5Ni0.5O4 thin films for all-solid Li-ion battery applications

Applied Physics Letters
Among various choices of high-performance cathode materials, Ni substituted LiMn2O4 spinel LiMn1.5Ni0.5O4 (LMNO) has proved to be one of the solutions to yield a high-performance and high-energy density material, which can operate at a higher potential window.
Sruthy Subash, Kumaresan Lakshmanan, Kumaran Vediappan, K. Kamala Bharathi   +3 more
openaire   +1 more source

Online Estimation of Diffusion-Induced Stress in Cathode Particles of Li-Ion Batteries

2019 IEEE 28th International Symposium on Industrial Electronics (ISIE), 2019
Lithium-ion batteries play an important role in the transportation system, portable devices, and renewable energy systems. There are still many issues facing lithium ion batteries. Experimental results show that cathode particle fracture is one of the most severe degradation mechanisms and could lead to significant capacity fade. To protect the battery,
Xianke Lin, Bingxian Mu
openaire   +2 more sources

Accelerating Li‐Ion Diffusion in LiFePO₄ by Polyanion Lattice Engineering

Advanced Materials
AbstractDespite the widespread commercialization of LiFePO4 as cathodes in lithium‐ion batteries, the rigid 1D Li‐ion diffusion channel along the [010] direction strongly limits its fast charge and discharge performance. Herein, lattice engineering is developed by the planar triangle BO33− substitution on tetrahedron PO43− to induce flexibility in the ...
Xinxin Wang, Anyang Yu, Tian Jiang, Shijun Yuan, Qi Fan, Qingyu Xu   +5 more
openaire   +2 more sources

Roadblocks in Cation Diffusion Pathways: Implications of Phase Boundaries for Li-Ion Diffusivity in an Intercalation Cathode Material

ACS Applied Materials & Interfaces, 2018
Increasing intercalation of Li-ions brings about distortive structural transformations in several canonical intercalation hosts. Such phase transformations require the energy dissipative creation and motion of dislocations at the interface between the parent lattice and the nucleated Li-rich phase.
Yuting Luo, Luis R. De Jesus, Justin L. Andrews, Abhishek Parija, Nathan Fleer, Daniel Juarez Robles, Partha P. Mukherjee, Sarbajit Banerjee   +7 more
openaire   +2 more sources