Hierarchically porous Pd/NiO nanomembranes as cathode catalysts in Li-O2 batteries. (December 2016)

• Record Type: Journal Article
• Authors: Lu, Xueyi; Yin, Yin; Zhang, Long; Xi, Lixia; Oswald, Steffen; Deng, Junwen; Schmidt, Oliver G.
• Is Part Of: Nano energy. Volume 30(2016:Dec.)
• Page Start: 69
• Page End: 76
• Publication Date: 2016-12
• Subjects: Membranes -- Pores -- Cathode -- Catalysts -- Batteries; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2016.09.034
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Exploring highly efficient electrocatalysts is crucial for aprotic Li-O2 batteries. Pd/NiO nanomembranes with hierarchical pores are fabricated and employed as cathode catalysts in Li-O2 batteries. By means of standard photolithography, ordered macropores were prepared in the nanomembranes. Moreover, we developed a facile template-free method to create nanopores with sizes ranging from 50 to 200 nm in the composite. The diverse pores of micro- and nanometer sizes and the resulting loose structure supply fast channels for the transportation of reactants, thus efficiently promoting the performance of Li-O2 batteries by lowering the overvoltages and enhancing the rate capability and stability. Highlights: Hierarchically porous Pd/NiO nanomembranes were used as catalysts of Li-O2 batteries. Ordered macropores were prepared in the membranes by means of standard lithography. A facile template-free method was developed to create nanopores in the membranes. The diverse pores and the resulting loose structure contribute to the high performance.