In-Situ Growth of CeO2 Nanoparticles on N-doped Reduced Graphene Oxide for Anchoring Li2O2 Formation in Lithium-Oxygen Batteries

被引：42

作者：

Jiang, Yuexing ^{[1
]}

Cheng, Junfang ^{[1
]}

Zou, Lu ^{[1
]}

Li, Xinyu ^{[1
]}

Gong, Yingpeng ^{[1
]}

Chi, Bo ^{[1
]}

Pu, Jian ^{[1
]}

Li, Jian ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & & Mould Technol, Ctr Fuel Cell Innovat, Wuhan 430074, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2016年 / 210卷

关键词：

Lithium-oxygen batteries; Oxygen reduction reaction; Ceria; Lithium peroxide anchoring; CATHODE ELECTROCATALYST; LI-O-2; BATTERY; AIR BATTERIES; REDUCTION; CATALYSTS; ELECTROCHEMISTRY; NANOCOMPOSITES; NANOCRYSTALS; GRAPHITE; KINETICS;

D O I：

10.1016/j.electacta.2016.05.199

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The large overpotentials during oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are still big challenges for the non-aqueous lithium-oxygen batteries. In this paper, CeO2 nanoparticles on N-doped reduced graphene oxide (CeO2@N-RGO) are in-situ synthesized through a one-step hydrothermal process as binder-free cathode catalyst. The battery with CeO2@N-RGO cathode delivers a capacity of 11,900 mAh g(-1) at current density of 400 mA g(-1), and can cycle up to 40 times without obvious degradation at the capacity limitation of 1000 mAh g(-1). The performance enhancement of the battery can be attributed to the synergetic effect of N-RGO and CeO2 nanoparyicles anchoring the formation of Li2O2. The study confirms that CeO2@N-RGO can be a potential excellent cathode catalyst for ORR and OER for rechargeable lithium-oxygen batteries. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：712 / 719

页数：8

共 43 条

[21] Probing the Reaction Kinetics of the Charge Reactions of Nonaqueous Li-O2 Batteries [J].