title: Three-Dimensional Ordered Macroporous FePO4as High-Efficiency Catalyst for Rechargeable Li-O2Batteries.
abstract: The Li-O2battery is receiving much recent attention because of its superhigh theoretical energy density. However, its performance is limited by the irreversible formation/decomposition of Li2O2on the cathode and the undesired electrolyte decomposition. In this work, low-cost three-dimensional ordered macroporous (3DOM) FePO4is synthesized by using polystyrene (PS) spheres template in a facile experimental condition and applied as a high-efficiency catalyst for rechargeable Li-O2batteries, including good rate performance, high specific capacity, and perfect cycling stability. The superior performances can be attributed to the unique structure of 3DOM FePO4cathodes, which can provide an efficient buffer space for O2/Li2O2conversion. In addition, it is demonstrated that the Li+intercalation/deintercalation behavior of 3DOM FePO4in ether-based electrolyte can contribute to capacity for Li-O2batteries over cycling. As a result, when there is no O2in the environment, the Li-O2cell can also be operated as a rechargeable Li-FePO4cell with a perfect cycle capability.
authors: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University , Shanghai 200433, China.
authors: Chao
authors: C
authors: Li
authors: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University , Shanghai 200433, China.
authors: Ziyang
authors: Z
authors: Guo
authors: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University , Shanghai 200433, China.
authors: Ying
authors: Y
authors: Pang
authors: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University , Shanghai 200433, China.
authors: Yunhe
authors: Y
authors: Sun
authors: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University , Shanghai 200433, China.
authors: Xiuli
authors: X
authors: Su
authors: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University , Shanghai 200433, China.
authors: Yonggang
authors: Y
authors: Wang
authors: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University , Shanghai 200433, China.
authors: Yongyao
authors: Y
authors: Xia
keywords: FePO4; Li-FePO4 battery; Li−O2 battery; high cycling stability; three-dimensional ordered macroporous