Interface cation migration kinetics induced oxygen release heterogeneity in layered lithium cathodes

2021 ◽  
Vol 36 ◽  
pp. 115-122
Author(s):  
Chao-Fan Li ◽  
Kangning Zhao ◽  
Xiaobin Liao ◽  
Zhi-Yi Hu ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Oxygen Release ◽  
Cation Migration

scholarly journals Addressing voltage decay in Li-rich cathodes by broadening the gap between metallic and anionic bands

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jicheng Zhang ◽  
Qinghua Zhang ◽  
Deniz Wong ◽  
Nian Zhang ◽  
Guoxi Ren ◽  
...  
Keyword(s):  
Low Voltage ◽  
Lattice Oxygen ◽  
Oxygen Release ◽  
Voltage Decay ◽  
Redox Active ◽  
Cation Migration ◽  
Voltage Fade ◽  
Oxygen Escape ◽  
Oxygen Bond ◽  
Oxygen Band

AbstractOxygen release and irreversible cation migration are the main causes of voltage fade in Li-rich transition metal oxide cathode. But their correlation is not very clear and voltage decay is still a bottleneck. Herein, we modulate the oxygen anionic redox chemistry by constructing Li2ZrO3 slabs into Li2MnO3 domain in Li1.21Ni0.28Mn0.51O2, which induces the lattice strain, tunes the chemical environment for redox-active oxygen and enlarges the gap between metallic and anionic bands. This modulation expands the region in which lattice oxygen contributes capacity by oxidation to oxygen holes and relieves the charge transfer from anionic band to antibonding metal–oxygen band under a deep delithiation. This restrains cation reduction, metal–oxygen bond fracture, and the formation of localized O2 molecule, which fundamentally inhibits lattice oxygen escape and cation migration. The modulated cathode demonstrates a low voltage decay rate (0.45 millivolt per cycle) and a long cyclic stability.

Alzheimer’s Disease: Erythrocyte 2,3-diphosphoglycerate Content and Circulating Erythropoietin

2019 ◽  
Vol 16 (9) ◽  
pp. 834-835
Author(s):  
Petter Järemo ◽  
Alenka Jejcic ◽  
Vesna Jelic ◽  
Tasmin Shahnaz ◽  
Homira Behbahani ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Cell Damage ◽  
Control Group ◽  
Red Cell ◽  
Oxygen Release ◽  
Regulatory Pathways ◽  
Β Amyloid ◽  
2,3 Dpg

Background: Alzheimer’s Disease (AD) features the accumulation of β-amyloid in erythrocytes. The subsequent red cell damage may well affect their oxygen-carrying capabilities. 2,3- diphosphoglycerate (2,3-DPG) binds to the hemoglobin thereby promoting oxygen release. It is theorized that 2,3-DPG is reduced in AD and that the resulting hypoxia triggers erythropoietin (EPO) release. Methods & Objective: To explore this theory, we analyzed red cell 2,3-DPG content and EPO in AD, mild cognitive impairment, and the control group, subjective cognitive impairment. Results: We studied (i) 2,3-DPG in red cells, and (ii) circulating EPO in AD, and both markers were unaffected by dementia. Disturbances of these oxygen-regulatory pathways do not appear to participate in brain hypoxia in AD.

scholarly journals Understanding Oxygen Release from Nanoporous Perovskite Oxides and Its Effect on the Catalytic Oxidation of CH4 and CO

2021 ◽  
Author(s):  
Elisa Poffe ◽  
Helena Kaper ◽  
Benedikt Ehrhardt ◽  
Lara Gigli ◽  
Daniel Aubert ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Perovskite Oxides ◽  
Oxygen Release

Regulating Anion Redox and Cation Migration to Enhance the Structural Stability of Li-Rich Layered Oxides

2021 ◽  
Author(s):  
Tianshuo Wang ◽  
Chunxiao Zhang ◽  
Shuwei Li ◽  
Xi Shen ◽  
Liangjun Zhou ◽  
...  
Keyword(s):  
Structural Stability ◽  
Layered Oxides ◽  
Cation Migration

Electrostatic Guidance of Glycosyl Cation Migration along the Reaction Coordinate of Uracil DNA Glycosylase†,‡

Biochemistry ◽  
2003 ◽  
Vol 42 (43) ◽  
pp. 12455-12460 ◽  
Author(s):  
Mario A. Bianchet ◽  
Lauren A. Seiple ◽  
Yu Lin Jiang ◽  
Yoshitaka Ichikawa ◽  
L. Mario Amzel ◽  
...  
Keyword(s):  
Reaction Coordinate ◽  
Dna Glycosylase ◽  
Uracil Dna Glycosylase ◽  
Cation Migration

Li+−Diglyme Complexes:  Barriers to Lithium Cation Migration

1998 ◽  
Vol 102 (6) ◽  
pp. 968-974 ◽  
Author(s):  
Amin Sutjianto ◽  
Larry A. Curtiss
Keyword(s):  
Lithium Cation ◽  
Cation Migration
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