TY - JOUR
T1 - Achieving low overpotential lithium-oxygen batteries by exploiting a new electrolyte based on N, N′-dimethylpropyleneurea
AU - Liu, Ruliang
AU - Lei, Yu
AU - Yu, Wei
AU - Wang, Haifan
AU - Qin, Lei
AU - Han, Da
AU - Yang, Wei
AU - Zhou, Dong
AU - He, Yanbing
AU - Zhai, Dengyun
AU - Li, Baohua
AU - Kang, Feiyu
N1 - Funding Information:
This work was supported by the Shenzhen Engineering Laboratory for the Next Generation Power and Energy Storage Batteries, the China Postdoctoral Science Foundation (No. 2015M580092), and the Shenzhen Technical Plan Project (JCYJ20130402145002382, ZDSYS20140509172959981, and JCYJ20140417115840246).
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/2/10
Y1 - 2017/2/10
N2 - Recently, the lithium-oxygen (Li-O2) battery has attracted much interest due to its ultrahigh theoretical energy density. However, its potential application is limited by an unstable electrolyte system, low round-trip efficiency, and poor cyclic performance. In this study, we present a new electrolyte based on N, N′- dimethylpropyleneurea (DMPU) applied for the Li-O2 battery. This electrolyte possesses high ionic conductivity and achieves a low discharge/charge voltage gap of 0.6 V, which is mainly due to the possible one-electron charge transfer mechanism. The introduction of the antioxidant butylatedhydroxytoluene (BHT) as an additive stabilizes the superoxide radical by chemical adsorption and improves the cyclic performance remarkably. Thus, this new electrolyte system may be one of the candidates for Li-O2 batteries.
AB - Recently, the lithium-oxygen (Li-O2) battery has attracted much interest due to its ultrahigh theoretical energy density. However, its potential application is limited by an unstable electrolyte system, low round-trip efficiency, and poor cyclic performance. In this study, we present a new electrolyte based on N, N′- dimethylpropyleneurea (DMPU) applied for the Li-O2 battery. This electrolyte possesses high ionic conductivity and achieves a low discharge/charge voltage gap of 0.6 V, which is mainly due to the possible one-electron charge transfer mechanism. The introduction of the antioxidant butylatedhydroxytoluene (BHT) as an additive stabilizes the superoxide radical by chemical adsorption and improves the cyclic performance remarkably. Thus, this new electrolyte system may be one of the candidates for Li-O2 batteries.
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U2 - 10.1021/acsenergylett.6b00581
DO - 10.1021/acsenergylett.6b00581
M3 - Article
AN - SCOPUS:85023764489
SN - 2380-8195
VL - 2
SP - 313
EP - 318
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 2
ER -
