Surface reinforcement doping to suppress oxygen release of Li-rich layered oxides

2021 ◽  
Vol 503 ◽  
pp. 230048
Author(s):  
Chong Yin ◽  
Xiaohui Wen ◽  
Liyang Wan ◽  
Zhepu Shi ◽  
Zhining Wei ◽  
...  
Keyword(s):  
Oxygen Release ◽  
Layered Oxides ◽  
Surface Reinforcement

scholarly journals Inhibition of oxygen dimerization by local symmetry tuning in Li-rich layered oxides for improved stability

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Fanghua Ning ◽  
Biao Li ◽  
Jin Song ◽  
Yuxuan Zuo ◽  
Huaifang Shang ◽  
...  
Keyword(s):  
Redox Reaction ◽  
High Capacity ◽  
Structural Response ◽  
Lithium Ion ◽  
Local Symmetry ◽  
Oxygen Release ◽  
Response Mechanism ◽  
Layered Oxides ◽  
Improved Stability ◽  
Further Development

Abstract Li-rich layered oxide cathode materials show high capacities in lithium-ion batteries owing to the contribution of the oxygen redox reaction. However, structural accommodation of this reaction usually results in O–O dimerization, leading to oxygen release and poor electrochemical performance. In this study, we propose a new structural response mechanism inhibiting O–O dimerization for the oxygen redox reaction by tuning the local symmetry around the oxygen ions. Compared with regular Li2RuO3, the structural response of the as-prepared local-symmetry-tuned Li2RuO3 to the oxygen redox reaction involves the telescopic O–Ru–O configuration rather than O–O dimerization, which inhibits oxygen release, enabling significantly enhanced cycling stability and negligible voltage decay. This discovery of the new structural response mechanism for the oxygen redox reaction will provide a new scope for the strategy of enhancing the anionic redox stability, paving unexplored pathways toward further development of high capacity Li-rich layered oxides.

Inhibiting Oxygen Release from Li‐rich, Mn‐rich Layered Oxides at the Surface with a Solution Processable Oxygen Scavenger Polymer

2021 ◽  
pp. 2100552
Author(s):  
Se Young Kim ◽  
Chan Sun Park ◽  
Shahrzad Hosseini ◽  
Jordan Lampert ◽  
Young Jin Kim ◽  
...  
Keyword(s):  
Oxygen Release ◽  
Layered Oxides ◽  
Oxygen Scavenger ◽  
Solution Processable

scholarly journals The Role of Oxygen Release from Li- and Mn-Rich Layered Oxides during the First Cycles Investigated by On-Line Electrochemical Mass Spectrometry

2017 ◽  
Vol 164 (2) ◽  
pp. A400-A406 ◽  
Author(s):  
Benjamin Strehle ◽  
Karin Kleiner ◽  
Roland Jung ◽  
Frederick Chesneau ◽  
Manuel Mendez ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Oxygen Release ◽  
Layered Oxides ◽  
On Line

scholarly journals Rotating Ring Disk Electrode for Monitoring the Oxygen Release at High Potentials in Li-Rich Layered Oxides

2018 ◽  
Vol 165 (14) ◽  
pp. A3326-A3333 ◽  
Author(s):  
Wei Yin ◽  
Sathiya Mariyappan ◽  
Alexis Grimaud ◽  
J. M. Tarascon
Keyword(s):  
Oxygen Release ◽  
Disk Electrode ◽  
Layered Oxides ◽  
Rotating Ring Disk Electrode ◽  
High Potentials

scholarly journals Oxygen Release and Surface Degradation of Li- and Mn-Rich Layered Oxides in Variation of the Li2MnO3Content

2018 ◽  
Vol 165 (11) ◽  
pp. A2718-A2731 ◽  
Author(s):  
Tobias Teufl ◽  
Benjamin Strehle ◽  
Philipp Müller ◽  
Hubert A. Gasteiger ◽  
Manuel A. Mendez
Keyword(s):  
Oxygen Release ◽  
Layered Oxides ◽  
Surface Degradation

A new lithium diffusion model in layered oxides based on asymmetric but reversible transition metal migration

2020 ◽  
Vol 13 (4) ◽  
pp. 1269-1278 ◽  
Author(s):  
Kyojin Ku ◽  
Byunghoon Kim ◽  
Sung-Kyun Jung ◽  
Yue Gong ◽  
Donggun Eum ◽  
...  
Keyword(s):  
Transition Metal ◽  
Diffusion Model ◽  
Layered Oxides ◽  
Layered Oxide ◽  
Reversible Transition ◽  
Lithium Diffusion ◽  
Metal Migration

We propose a new lithium diffusion model involving coupled lithium and transition metal migration, peculiarly occurring in a lithium-rich layered oxide.

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.

Li+/Na+ Ion Exchange in Layered Na2/3(Ni0.25Mn0.75)O2: A Simple and Fast Way to Synthesize O3/O2-Type Layered Oxides

2021 ◽  
Author(s):  
Weibo Hua ◽  
Suning Wang ◽  
Kai Wang ◽  
Alexander Missyul ◽  
Qiang Fu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Layered Oxides
Sign in / Sign up

Export Citation Format

Share Document