Electrochemical Behavior of High-Voltage LiNi0.5Mn1.5O4-xFx Electrodes at Elevated Storage Temperature

AbstractThe formation of aqueous bridges containing phenol and ethylene glycol as well as bisphenol-A, hydrochinone and p-cresol under the application of high voltage DC (“liquid bridges”) is reported. Detailed studies were made for phenol and glycol with concentrations from 0.005 to 0.531 mol L−1. Conductivity as well as substance and mass transfers through these aqueous bridges are discussed and compared with pure water bridges. Previously suggested bidirectional mass transport is confirmed for the substances tested. Anodic oxidation happens more efficiently when phenol or glycol are transported from the cathode to the anode since in this case the formation of a passivation layer or electrode poisoning are retarded by the electrohydrodynamic (EHD) flow. The conductivity in the cathode beaker decreases in all experiments due to electrophoretic transport of naturally dissolved carbonate and bicarbonate to the anode. The observed electrochemical behavior is shortly discussed and compared to known mechanisms.

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Understanding the impact of calcination time of high-voltage spinel Li1+Ni0.5Mn1.5O4 on structure and electrochemical behavior

Electrochimica Acta ◽

10.1016/j.electacta.2019.134901 ◽

2019 ◽

Vol 325 ◽

pp. 134901 ◽

Cited By ~ 3

Author(s):

Johannes Betz ◽

Laura Nowak ◽

Jan-Paul Brinkmann ◽

Peer Bärmann ◽

Marcel Diehl ◽

...

Keyword(s):

High Voltage ◽

Electrochemical Behavior ◽

Calcination Time ◽

The Impact

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Study of the Electrochemical Behavior of High Voltage Vanadium-Metal Hydride Hybrid Semi-Flow Battery

ECS Meeting Abstracts ◽

10.1149/ma2013-01/9/481 ◽

2013 ◽

Keyword(s):

High Voltage ◽

Metal Hydride ◽

Electrochemical Behavior ◽

Flow Battery ◽

Vanadium Metal

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Synthesis and electrochemical behavior of nanosized LiNi1−xCaxO2 cathode materials for high voltage secondary lithium-ion cells

Materials Research Bulletin ◽

10.1016/j.materresbull.2006.11.003 ◽

2007 ◽

Vol 42 (8) ◽

pp. 1507-1517 ◽

Cited By ~ 2

Author(s):

R. Sathiyamoorthi ◽

T. Vasudevan

Keyword(s):

High Voltage ◽

Electrochemical Behavior ◽

Cathode Materials ◽

Lithium Ion ◽

Lithium Ion Cells

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Electrochemical behavior and surface structural change of LiMn2O4charged to 5.1 V

Journal of Materials Chemistry A ◽

10.1039/c4ta02109f ◽

2014 ◽

Vol 2 (35) ◽

pp. 14519-14527 ◽

Cited By ~ 31

Author(s):

Daichun Tang ◽

Liubin Ben ◽

Yang Sun ◽

Bin Chen ◽

Zhenzhong Yang ◽

...

Keyword(s):

Structural Change ◽

Cathode Material ◽

Solid Electrolyte ◽

High Voltage ◽

Electrochemical Behavior ◽

Solid Electrolyte Interface ◽

Lithium Ions ◽

Full Cell ◽

Electrolyte Interface

Charging a spinel LiMn2O4cathode material to high voltage (>4.3 V) is a convenient way to obtain more lithium ions for formation of an anodic solid-electrolyte-interface in a full cell.

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