The quantitative analysis of cations (Na+, NH4+, K+, Mg2+, Ca2+) was performed as reported earlier [27 (link)] with HPIC using a ICS-2000 ion chromatography system (Dionex, Idstein, Germany).
Ics 2000 ion chromatography system
Manufactured by Thermo Fisher Scientific
Sourced in Germany
The ICS-2000 ion chromatography system is a laboratory instrument designed for the separation and analysis of ionic compounds. It is capable of performing ion exchange, ion exclusion, and ion pair chromatography. The system features a conductivity detector, an optional suppressor, and a range of compatible sample preparation and handling options.
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Lab products found in correlation
2 protocols using ics 2000 ion chromatography system
1
Quantitative Cation Analysis by HPIC
2
Electrolyte Analysis of Discharged Batteries
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Batteries of varying electrolyte compositions were assembled and discharged to a 2.3 V cutoff.
The cells were taken to the glovebox and disassembled, separating the electrolyte and cathode.
For some cells, the cathode was cleaned using the procedure above and then put into another cell with new lithium anode and electrolyte. These cells with discharged cathodes (containing Li 2 O)
were then charged a fixed amount (2 mAh) and similarly disassembled. All electrolytes of interest were collected and dissolved in mQ water of known volume. Following a dilution procedure, the ion concentration was in the 10-500 μM range which is appropriate for ion exchange chromatography. A Dionex ICS-2000 Ion Chromatography System was used for all experiments, and a calibration procedure for both NO 2 -and NO 3 -was performed before each set of samples. A ratio of NO 3 -to NO 2 -anions was calculated from the measurements (typical data in Supplementary Fig. 8), and using the initial mass of electrolyte in the cell, the number of moles of each could be calculated.
The cells were taken to the glovebox and disassembled, separating the electrolyte and cathode.
For some cells, the cathode was cleaned using the procedure above and then put into another cell with new lithium anode and electrolyte. These cells with discharged cathodes (containing Li 2 O)
were then charged a fixed amount (2 mAh) and similarly disassembled. All electrolytes of interest were collected and dissolved in mQ water of known volume. Following a dilution procedure, the ion concentration was in the 10-500 μM range which is appropriate for ion exchange chromatography. A Dionex ICS-2000 Ion Chromatography System was used for all experiments, and a calibration procedure for both NO 2 -and NO 3 -was performed before each set of samples. A ratio of NO 3 -to NO 2 -anions was calculated from the measurements (typical data in Supplementary Fig. 8), and using the initial mass of electrolyte in the cell, the number of moles of each could be calculated.
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