Structural Effects of Solvents on Li-Ion-Hopping Conduction in Highly Concentrated LiBF4/Sulfone Solutions

2021 ◽  
Author(s):  
Yosuke Ugata ◽  
Shohei Sasagawa ◽  
Ryoichi Tatara ◽  
Kazuhide Ueno ◽  
Masayoshi Watanabe ◽  
...  
Keyword(s):  
Hopping Conduction ◽  
Structural Effects ◽  
Li Ion

scholarly journals Ionic transport in highly concentrated lithium bis(fluorosulfonyl)amide electrolytes with keto ester solvents: structural implications for ion hopping conduction in liquid electrolytes

2019 ◽  
Vol 21 (9) ◽  
pp. 5097-5105 ◽  
Author(s):  
Shinji Kondou ◽  
Morgan L. Thomas ◽  
Toshihiko Mandai ◽  
Kazuhide Ueno ◽  
Kaoru Dokko ◽  
...  
Keyword(s):  
Ion Transport ◽  
Ion Pairs ◽  
Ionic Transport ◽  
Hopping Conduction ◽  
Keto Ester ◽  
Liquid Electrolytes ◽  
Li Ion

The hopping/exchange-dominated Li ion transport is attributed to liquid electrolytes with solvent-bridged, chain-like Li ion coordination and aggregated ion pairs.

scholarly journals Structural Effects of Anomalous Current Densities on Manganese Hexacyanoferrate for Li-Ion Batteries

2020 ◽  
Vol 10 (21) ◽  
pp. 7573
Author(s):  
Angelo Mullaliu ◽  
Stéphanie Belin ◽  
Lorenzo Stievano ◽  
Marco Giorgetti ◽  
Stefano Passerini
Keyword(s):  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Electrochemical Process ◽  
Remaining Useful Life ◽  
Multivariate Curve Resolution ◽  
Battery Management System ◽  
Battery Management ◽  
Structural Effects ◽  
Current Densities ◽  
Li Ion

A battery management system (BMS) plays a pivotal role in providing optimal performance of lithium-ion batteries (LIBs). However, the eventual malfunction of the BMS may lead to safety hazards or reduce the remaining useful life of LIBs. Manganese hexacyanoferrate (MnHCF) was employed as the positive electrode material in a Li-ion half-cell and subjected to five cycles at high current densities (10 A gMnHCF−1) and to discharge at 0.1 A gMnHCF−1, instead of classical charge/discharge cycling with initial positive polarization at 0.01 A gMnHCF−1, to simulate a current sensor malfunctioning and to evaluate the electrochemical and structural effects on MnHCF. The operando set of spectra at the Mn and Fe K-edges was further analyzed through multivariate curve resolution analysis with an alternating least squares algorithm (MCR–ALS) and extended X-ray absorption fine structure (EXAFS) spectroscopy to investigate the structural modifications arising during cycling after the applied electrochemical protocol. The coulombic efficiency in the first cycle was dramatically affected; however, the local structural environment around each photo absorber recovered during charging. The identification of an additional spectral contribution in the electrochemical process was achieved through MCR-ALS analysis, and the Mn-local asymmetry was thoroughly explored via EXAFS analysis.

Li-ion hopping conduction in highly concentrated lithium bis(fluorosulfonyl)amide/dinitrile liquid electrolytes

2019 ◽  
Vol 21 (19) ◽  
pp. 9759-9768 ◽  
Author(s):  
Yosuke Ugata ◽  
Morgan L. Thomas ◽  
Toshihiko Mandai ◽  
Kazuhide Ueno ◽  
Kaoru Dokko ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Hopping Conduction ◽  
Liquid Electrolytes ◽  
Li Ion

Li+ ion hopping conduction through ligand (solvent and anion) exchange emerges in solvent-deficient liquid electrolytes of [Li salt]/[dinitrile] > 1.

Electrochemical and Structural Effects of In Situ Li2O Extraction from Li2MnO3 for Li-Ion Batteries

2015 ◽  
Vol 7 (4) ◽  
pp. 2433-2438 ◽  
Author(s):  
Clement Jacob ◽  
Jie Jian ◽  
Qing Su ◽  
Stanislav Verkhoturov ◽  
Renald Guillemette ◽  
...  
Keyword(s):  
Li Ion Batteries ◽  
Structural Effects ◽  
Li Ion

scholarly journals Direct Evidence for Li Ion Hopping Conduction in Highly Concentrated Sulfolane-Based Liquid Electrolytes

2018 ◽  
Vol 122 (47) ◽  
pp. 10736-10745 ◽  
Author(s):  
Kaoru Dokko ◽  
Daiki Watanabe ◽  
Yosuke Ugata ◽  
Morgan L. Thomas ◽  
Seiji Tsuzuki ◽  
...  
Keyword(s):  
Direct Evidence ◽  
Hopping Conduction ◽  
Liquid Electrolytes ◽  
Li Ion

the effects of resonance with Jupiter in the system of short-period comets

1974 ◽  
Vol 22 ◽  
pp. 193-203
Author(s):  
L̆ubor Kresák
Keyword(s):  
Structural Effects ◽  
Order Resonance ◽  
Mean Motion ◽  
Short Period ◽  
The Mean ◽  
Compound Effect ◽  
Low Order

AbstractStructural effects of the resonance with the mean motion of Jupiter on the system of short-period comets are discussed. The distribution of mean motions, determined from sets of consecutive perihelion passages of all known periodic comets, reveals a number of gaps associated with low-order resonance; most pronounced are those corresponding to the simplest commensurabilities of 5/2, 2/1, 5/3, 3/2, 1/1 and 1/2. The formation of the gaps is explained by a compound effect of five possible types of behaviour of the comets set into an approximate resonance, ranging from quick passages through the gap to temporary librations avoiding closer approaches to Jupiter. In addition to the comets of almost asteroidal appearance, librating with small amplitudes around the lower resonance ratios (Marsden, 1970b), there is an interesting group of faint diffuse comets librating in characteristic periods of about 200 years, with large amplitudes of about±8% in μ and almost±180° in σ, around the 2/1 resonance gap. This transient type of motion appears to be nearly as frequent as a circulating motion with period of revolution of less than one half that of Jupiter. The temporary members of this group are characteristic not only by their appearance but also by rather peculiar discovery conditions.

Microstructural Analysis of Si-Ti-Fe Alloy Anode Materials for Li-ion Secondary Batteries

2013 ◽  
Vol 51 (6) ◽  
pp. 429-436 ◽  
Author(s):  
Jeong Eun Chae ◽  
Jun-Mo Yang ◽  
Kyung Jin Park ◽  
Jung Ho Yoo ◽  
Yun Chang Park ◽  
...  
Keyword(s):  
Anode Materials ◽  
Microstructural Analysis ◽  
Alloy Anode ◽  
Li Ion
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