Online Continuous Flow Differential Electrochemical
Mass Spectrometry with a Realistic Battery Setup for High-Precision,
Long-Term Cycling Tests
Posted on 2015-06-16 - 00:00
We describe the benefits of an online continuous
flow differential electrochemical mass spectrometry (DEMS) method
that allows for realistic battery cycling conditions. We provide a
detailed description on the buildup and the role of the different
components in the system. Special emphasis is given on the cell design.
The retention time and response characteristics of the system are
tested with the electrolysis of Li2O2. Finally,
we show a practical application in which a Li-ion battery is examined.
The value of long-term DEMS measurements for the proper evaluation
of electrolyte decomposition is demonstrated by an experiment where
a Li1+xNi0.5Mn0.3Co0.2O2 (NMC 532)/graphite cell is cycled over
20 charge/discharge cycles.
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Berkes, Balázs B.; Jozwiuk, Anna; Vračar, Miloš; Sommer, Heino; Brezesinski, Torsten; Janek, Jürgen (2016). Online Continuous Flow Differential Electrochemical
Mass Spectrometry with a Realistic Battery Setup for High-Precision,
Long-Term Cycling Tests. ACS Publications. Collection. https://doi.org/10.1021/acs.analchem.5b01237
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AUTHORS (6)
BB
Balázs B. Berkes
AJ
Anna Jozwiuk
MV
Miloš Vračar
HS
Heino Sommer
TB
Torsten Brezesinski
JJ
Jürgen Janek
KEYWORDS
CyclingchargeOnlinebuildupcomponentelectrochemical mass spectrometrygraphitecell designapplicationexperimentroleElectrochemical Mass Spectrometryretention timeevaluationmethodTestsWeRealistic Battery Setupbattery cycling conditionsFlowDEMS measurementsresponse characteristicselectrolyte decompositionelectrolysisSpecial emphasisflowbenefitNMCLi 2O