TY - JOUR
T1 - Investigating the electrode kinetics of the Li/Li+ Couple in a wide range of room temperature ionic liquids at 298 K
AU - Wibowo, Rahmat
AU - Jones, Sarah E.Ward
AU - Compton, Richard G.
PY - 2010/3/11
Y1 - 2010/3/11
N2 - Cyclic voltammetry experiments are carried out using a 0.1 M Li+ solution in 12 different room temperature ionic liquids (RTILs), [C 4mpyrr][NTf2], [C4dmim][NTf2], [N2,1,1,3][NTf2], [N6,2,2,2][NTf2], [C4mim][OTf], [C4mpyrr][N(CN)2], [C 2mim][NTf2], [P14,6,6,6][FAP], [C 4py][NTf2], [C4mim][PF6], [C 4mim][NTf2], and [N1,8,8,8][OTf], on a Ni microelectrode to investigate the deposition and stripping of lithium from the electrode surface. [C4mpyrr][N(CN)2], [C 2mim][NTf2], [P14,6,6,6][FAP], [C 4py][NTf2], [C4mim][PF6], [C 4mim][NTf2], and [N1,8,8,8][OTf] did not have a wide enough potential window to observe the deposition and stripping of bulk lithium. In the experimental data recorded for [C4mpyrr][NTf 2], [C4dmim][NTf2], [N2,1,1,3] [NTf2], [N6,2,2,2][NTf2], and [C 4mim][OTf], a single stripping peak for bulk lithium is seen, and kinetic data for the Li/Li+ couple are extracted by comparison with computational simulations. The electrochemical rate constant, k0, is found to have values ranging from (1.3 · 10-6 to 1.2 · 10-5) cm· s-1. Diffusion coefficients for the Li+ ion in these five RTILs are also reported.
AB - Cyclic voltammetry experiments are carried out using a 0.1 M Li+ solution in 12 different room temperature ionic liquids (RTILs), [C 4mpyrr][NTf2], [C4dmim][NTf2], [N2,1,1,3][NTf2], [N6,2,2,2][NTf2], [C4mim][OTf], [C4mpyrr][N(CN)2], [C 2mim][NTf2], [P14,6,6,6][FAP], [C 4py][NTf2], [C4mim][PF6], [C 4mim][NTf2], and [N1,8,8,8][OTf], on a Ni microelectrode to investigate the deposition and stripping of lithium from the electrode surface. [C4mpyrr][N(CN)2], [C 2mim][NTf2], [P14,6,6,6][FAP], [C 4py][NTf2], [C4mim][PF6], [C 4mim][NTf2], and [N1,8,8,8][OTf] did not have a wide enough potential window to observe the deposition and stripping of bulk lithium. In the experimental data recorded for [C4mpyrr][NTf 2], [C4dmim][NTf2], [N2,1,1,3] [NTf2], [N6,2,2,2][NTf2], and [C 4mim][OTf], a single stripping peak for bulk lithium is seen, and kinetic data for the Li/Li+ couple are extracted by comparison with computational simulations. The electrochemical rate constant, k0, is found to have values ranging from (1.3 · 10-6 to 1.2 · 10-5) cm· s-1. Diffusion coefficients for the Li+ ion in these five RTILs are also reported.
UR - http://www.scopus.com/inward/record.url?scp=77949465805&partnerID=8YFLogxK
U2 - 10.1021/je9005568
DO - 10.1021/je9005568
M3 - Article
AN - SCOPUS:77949465805
SN - 0021-9568
VL - 55
SP - 1374
EP - 1376
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 3
ER -