Kwak, Won-Jin Chen, Zonghai Yoon, Chong Seung Lee, Joong-Kee Amine, Khalil Sun, Yang-Kook 2024-01-20T07:33:07Z 2024-01-20T07:33:07Z 2021-09-05 2015-03 2211-2855 https://pubs.kist.re.kr/handle/201004/125709 To alleviate the high polarization and short cycle lifetime of rechargeable Na-air batteries, ordered mesoporous carbon (OMC) was synthesized and evaluated as a nanostructured conductive matrix to host low-conductivity products generated during the discharge of Na-air batteries. The OMC had high specific surface area (1544 m(2)/g) and a narrow pore size (2.7 nm), with the voltage polarization of 1.5 V, lower than that of the commonly used Super P carbon black (-1.8 V). Although the carbonate-based electrolyte was decomposed to produce Na2CO3, the OMC cathode allowed reversible formation and decomposition of Na2CO3 and exhibited stable cycling behavior with low polarization for 20 cycles with a delivered capacity of 500 mAh/g at the current density of 100 mA/g. (C) 2015 Elsevier Ltd. All rights reserved. English ELSEVIER SCIENCE BV NONAQUEOUS LI-O-2 BATTERIES SUPEROXIDE NAO2 BATTERY NA-O-2 BATTERIES LITHIUM ELECTROLYTE NANOCOMPOSITES PERFORMANCE CARBONATE CAPACITY CHARGE Nanoconfinement of low-conductivity products in rechargeable sodium-air batteries Article 10.1016/j.nanoen.2014.11.057 1 NANO ENERGY, v.12, pp.123 - 130 NANO ENERGY 12 123 130 scie scopus 000354767500015 2-s2.0-84920720070 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article NONAQUEOUS LI-O-2 BATTERIES SUPEROXIDE NAO2 BATTERY NA-O-2 BATTERIES LITHIUM ELECTROLYTE NANOCOMPOSITES PERFORMANCE CARBONATE CAPACITY CHARGE Na-air battery Porous carbon material Discharge product morphology Size-confinement Carbonate-based electrolyte