TY - JOUR
T1 - Li-O 2 battery with a dimethylformamide electrolyte
AU - Chen, Yuhui
AU - Freunberger, Stefan A.
AU - Peng, Zhangquan
AU - Bardé, Fanny
AU - Bruce, Peter G.
PY - 2012/5/9
Y1 - 2012/5/9
N2 - Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O 2 battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although reactions at the O 2 cathode on the first discharge-charge cycle are dominated by reversible Li 2O 2 formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li 2O 2, Li 2CO 3, HCO 2Li, CH 3CO 2Li, NO, H 2O, and CO 2. Li 2CO 3 accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O 2 battery.
AB - Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O 2 battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although reactions at the O 2 cathode on the first discharge-charge cycle are dominated by reversible Li 2O 2 formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li 2O 2, Li 2CO 3, HCO 2Li, CH 3CO 2Li, NO, H 2O, and CO 2. Li 2CO 3 accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O 2 battery.
UR - http://www.scopus.com/inward/record.url?scp=84860873910&partnerID=8YFLogxK
U2 - 10.1021/ja302178w
DO - 10.1021/ja302178w
M3 - 文章
AN - SCOPUS:84860873910
SN - 0002-7863
VL - 134
SP - 7952
EP - 7957
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 18
ER -