Perovskite-Type LaSrMnO Electrocatalyst with Uniform Porous Structure   for an Efficient Li-O-2 Battery Cathode

doi:10.1021/acsnano.5b06592

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	Perovskite-Type LaSrMnO Electrocatalyst with Uniform Porous Structure for an Efficient Li-O-2 Battery Cathode
	Yang, Yanbing ; Yin, Wei ; Wu, Shiting ; Yang, Xiangdong ; Xia, Wei ; Shen, Yue ; Huang, Yunhui ; Cao, Anyuan ; Yuan, Quan
刊名	ACS NANO
	2016
关键词	perovskite mesoporous LaSrMnO graphene LiO2 cell LITHIUM-OXYGEN BATTERIES LI-AIR BATTERIES CARBON CATALYSTS PERFORMANCE REDUCTION EVOLUTION ELECTRODE GRAPHENE RECHARGEABILITY
DOI	10.1021/acsnano.5b06592
英文摘要	Perovskite is an excellent candidate as low cost catalyst for Li-O-2 cells. However, the limited porosity, which impedes molecular transport, and the inherent low electronic conductivity are the main barriers toward production of high-performance electrodes. Here, we designed a hierarchical porous flexible architecture by coating thin mesoporous yet crystalline LaSrMnO layers throughout a graphene foam to form graphene/meso-LaSrMnO sandwich-like nanosheets. In this well-designed system, the macropore between nanosheets facilitates O-2 and Li+ diffusion, the mesopore provides large surface area for electrolyte immersion and discharge products deposition, the perovskite phase catalyst decreases reactive overpotential, and the graphene serves as conductive network for electrons transport. When used as a freestanding electrode of Li-O-2 cell, it shows high specific capacity, superior rate capability, and cyclic stability. Combination of mesoporous perovskites with conductive graphene networks represents an effective strategy for developing efficient electrodes in various energy storage systems.; National Basic Research Program of China [2014CB931700]; National Natural Science Foundation of China [51325202, 21201133, 51272186, 21422105, 61222403]; SCI(E); EI; PubMed; ARTICLE; anyuan@pku.edu.cn; yuanquan@whu.edu.cn; 1; 1240-1248; 10
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/435809]
专题	工学院
推荐引用方式 GB/T 7714	Yang, Yanbing,Yin, Wei,Wu, Shiting,et al. Perovskite-Type LaSrMnO Electrocatalyst with Uniform Porous Structure for an Efficient Li-O-2 Battery Cathode[J]. ACS NANO,2016.
APA	Yang, Yanbing.,Yin, Wei.,Wu, Shiting.,Yang, Xiangdong.,Xia, Wei.,...&Yuan, Quan.(2016).Perovskite-Type LaSrMnO Electrocatalyst with Uniform Porous Structure for an Efficient Li-O-2 Battery Cathode.ACS NANO.
MLA	Yang, Yanbing,et al."Perovskite-Type LaSrMnO Electrocatalyst with Uniform Porous Structure for an Efficient Li-O-2 Battery Cathode".ACS NANO (2016).