scholarly journals A new approach to improve the electrochemical performance of ZnMn2O4 through a charge compensation mechanism using the substitution of Al3+ for Zn2+

RSC Advances ◽  
2018 ◽  
Vol 8 (14) ◽  
pp. 7361-7368
Author(s):  
Xianyu Zhu ◽  
Jingbin Quan ◽  
Jichun Huang ◽  
Zheng Ma ◽  
Yixin Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Charge Compensation ◽  
Compensation Mechanism ◽  
New Approach ◽  
A Charge

This work reports the nonequivalent substitution of ZnMn2O4. This is a new approach to improve the electrochemical performance of ZnMn2O4 through a charge compensation mechanism using the substitution of Al3+ for Zn2+.

scholarly journals Covalency does not suppress O2 formation in 4d and 5d Li-rich O-redox cathodes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Robert A. House ◽  
John-Joseph Marie ◽  
Joohyuk Park ◽  
Gregory J. Rees ◽  
Stefano Agrestini ◽  
...  
Keyword(s):  
High Resolution ◽  
Transition Metal ◽  
Metal Oxides ◽  
Oxidation State ◽  
Transition Metal Oxides ◽  
Charge Compensation ◽  
Compensation Mechanism ◽  
A Charge

AbstractLayered Li-rich transition metal oxides undergo O-redox, involving the oxidation of the O2− ions charge compensated by extraction of Li+ ions. Recent results have shown that for 3d transition metal oxides the oxidized O2− forms molecular O2 trapped in the bulk particles. Other forms of oxidised O2− such as O22− or (O–O)n− with long bonds have been proposed, based especially on work on 4 and 5d transition metal oxides, where TM–O bonding is more covalent. Here, we show, using high resolution RIXS that molecular O2 is formed in the bulk particles on O2‒ oxidation in the archetypal Li-rich ruthenates and iridate compounds, Li2RuO3, Li2Ru0.5Sn0.5O3 and Li2Ir0.5Sn0.5O3. The results indicate that O-redox occurs across 3, 4, and 5d transition metal oxides, forming O2, i.e. the greater covalency of the 4d and 5d compounds still favours O2. RIXS and XAS data for Li2IrO3 are consistent with a charge compensation mechanism associated primarily with Ir redox up to and beyond the 5+ oxidation state, with no evidence of O–O dimerization.

scholarly journals Carbon decorated Li3V2(PO4)3 for high-rate lithium-ion batteries: Electrochemical performance and charge compensation mechanism

2021 ◽  
Vol 53 ◽  
pp. 124-131 ◽  
Author(s):  
Manling Ding ◽  
Chen Cheng ◽  
Qiulong Wei ◽  
Yue Hu ◽  
Yingying Yan ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Charge Compensation ◽  
High Rate ◽  
Compensation Mechanism

The interfacial electrostatic potential modulates the insertion of cell-penetrating peptides into lipid bilayers

2018 ◽  
Vol 20 (7) ◽  
pp. 5180-5189 ◽  
Author(s):  
Matías A. Via ◽  
Joaquín Klug ◽  
Natalia Wilke ◽  
Luis S. Mayorga ◽  
M. G. Del Pópolo
Keyword(s):  
Lipid Bilayers ◽  
Charge Compensation ◽  
Cell Penetrating Peptides ◽  
Cell Penetrating Peptide ◽  
Compensation Mechanism ◽  
Counter Ions ◽  
Cell Penetrating ◽  
A Cell ◽  
A Charge ◽  
Peptide Insertion

A charge compensation mechanism, arising from the segregation of counter-ions while a cell-penetrating-peptide traverses a membrane, determines the shape and symmetry of the peptide insertion free-energy profile.

Dependence of the Refractive Indices in LiNbO3:Cr Crystals Doped with HfO2

2005 ◽  
Vol 480-481 ◽  
pp. 423-428 ◽  
Author(s):  
E. Cantelar ◽  
G.A. Torchia ◽  
Veronica Bermúdez ◽  
D. Jaque ◽  
J.A. Sanz-Gracía ◽  
...  
Keyword(s):  
Absorption Edge ◽  
Charge Compensation ◽  
Optical Probe ◽  
Experimental Result ◽  
Refractive Indices ◽  
Compensation Mechanism ◽  
Linbo3 Crystal ◽  
Dopant Level ◽  
A Charge

The dependence of the refractive indices, absorption edge and optical damage in congruent HfO2-doped LiNbO3 crystal are reported. A small amount of Cr3+ ions (0.1 mol%) was introduced in the doped crystals as optical probe. The experimental data indicates that the extraordinary and ordinary indices depend on the Hf4+ ions concentration showing a singularly for a dopant level of ~ 2.7 mol%. The dependence of the absorption edge also shows a transition region at this Hf4+concentration. The distortion of the transmitted light through samples doped with different concentrations of Hf4+ ions indicates that an inhibition of optical damages is achieved at above 3 mol% of dopant. A charge compensation mechanism is proposed to explain the role of the Hf4+ ions for the observed experimental result.

Surface and Interface Analysis of LiCoO2 and LiPON Thin Films by Photoemission: Implications for Li-Ion Batteries

2015 ◽  
Vol 229 (9) ◽  
Author(s):  
René Hausbrand ◽  
André Schwöbel ◽  
Wolfram Jaegermann ◽  
Markus Motzko ◽  
David Ensling
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Charge Compensation ◽  
Compensation Mechanism ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Interface Formation ◽  
Interface Analysis ◽  
Surface And Interface ◽  
Li Ion

AbstractThin film technology is applied in different fields of Li-ion battery research and development, such as the fabrication of thin film cells and model electrodes. Data obtained by surface and interface analysis of thin films provides important insights into fundamental processes such as charge compensation mechanism or interface formation. In this overview, we present the analysis of LiCoO

A-site-cation deficiency in the SrCe0.9Yb0.1O3−δ perovskite: effects of charge-compensation mechanism on structure and proton conductivity

2011 ◽  
Vol 21 (15) ◽  
pp. 5764 ◽  
Author(s):  
Glenn C. Mather ◽  
Susana García-Martín ◽  
Darja Benne ◽  
Clemens Ritter ◽  
Ulises Amador
Keyword(s):  
Proton Conductivity ◽  
Charge Compensation ◽  
Compensation Mechanism ◽  
Cation Deficiency ◽  
A Site

scholarly journals Charge Compensation Mechanism of a Na+-coupled, Secondary Active Glutamate Transporter

2012 ◽  
Vol 287 (32) ◽  
pp. 26921-26931 ◽  
Author(s):  
Christof Grewer ◽  
Zhou Zhang ◽  
Juddy Mwaura ◽  
Thomas Albers ◽  
Alexander Schwartz ◽  
...  
Keyword(s):  
Glutamate Transporter ◽  
Charge Compensation ◽  
Compensation Mechanism
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