TY - JOUR
T1 - Gadolinium doped ceria on graphene cathode with enhanced cycle stability for non-aqueous lithium-oxygen batteries
AU - Jiang, Yuexing
AU - Zou, Lu
AU - Cheng, Junfang
AU - Huang, Yizhen
AU - Wang, Ziling
AU - Chi, Bo
AU - Pu, Jian
AU - Li, Jian
N1 - Funding Information:
This work is financially supported by National Key Research & Development Project-International Cooperation Program, China ( 2016YFE0126900 ) and Hubei Province Scientific Project, China ( 2018AAA057 ). The authors would like to thank the Analytical and Testing Center of Huazhong University of Science and Technology for samples characterization assistance.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Cycle stability is crucial for non-aqueous lithium-oxygen batteries, which is dependent with the cathode performance. In this work, gadolinium doped CeO2 nanoparticles are prepared through one-pot hydrothermal process on reduced graphene oxide, and applied as cathode catalyst for non-aqueous lithium-oxygen batteries. With the catalytic effect of Ce0.8Gd0.2O2-δ nanoparticles on Li2O2 formation and decomposition, the battery delivers both low discharge and charge overpotential about 0.18 V and 0.69 V at the current density of 400 mA g−1. Moreover, cycle stability is enhanced for over 100 times at the capacity limitation of 600 mAh·g−1. The superiority may attribute to the enhanced stabilization of Ce0.8Gd0.2O2-δ nanoparticles through doping process, which can preserve the nanoparticles from migration and aggregation during cycle process.
AB - Cycle stability is crucial for non-aqueous lithium-oxygen batteries, which is dependent with the cathode performance. In this work, gadolinium doped CeO2 nanoparticles are prepared through one-pot hydrothermal process on reduced graphene oxide, and applied as cathode catalyst for non-aqueous lithium-oxygen batteries. With the catalytic effect of Ce0.8Gd0.2O2-δ nanoparticles on Li2O2 formation and decomposition, the battery delivers both low discharge and charge overpotential about 0.18 V and 0.69 V at the current density of 400 mA g−1. Moreover, cycle stability is enhanced for over 100 times at the capacity limitation of 600 mAh·g−1. The superiority may attribute to the enhanced stabilization of Ce0.8Gd0.2O2-δ nanoparticles through doping process, which can preserve the nanoparticles from migration and aggregation during cycle process.
KW - Ceria
KW - Cycle stability
KW - Gadolinium doping
KW - Graphene oxide
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U2 - 10.1016/j.jpowsour.2018.07.117
DO - 10.1016/j.jpowsour.2018.07.117
M3 - Article
AN - SCOPUS:85051035520
VL - 400
SP - 1
EP - 8
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -
