Effect of Interlayer Spacing on the Activity of Layered Manganese Oxide Bilayer Catalysts for the Oxygen Evolution Reaction

标题

Effect of Interlayer Spacing on the Activity of Layered Manganese Oxide Bilayer Catalysts for the Oxygen Evolution Reaction

作者

作者:Kang, Q (Kang, Qing)^[1,2,4 ]; Vernisse, L (Vernisse, Loranne)^[1,2,5 ]; Remsing, RC (Remsing, Richard C.)^[1,2,3 ]; Thenuwara, AC (Thenuwara, Akila C.)^[1,2 ]; Shumlas, SL (Shumlas, Samantha L.)^[1,2 ]; McKendry, IG (McKendry, Ian G.)^[1,2 ]; Klein, ML (Klein, Michael L.)^[1,2,3 ]; Borguet, E (Borguet, Eric)^[1,2 ]; Zdilla, MJ (Zdilla, Michael J.)^[1,2 ]; Strongin, DR (Strongin, Daniel R.)^[1,2 ]

期刊信息

摘要

We investigated the dependence of the electrocatalytic activity for the oxygen evolution reaction (OER) on the interlayer distance of five compositionally distinct layered manganese oxide nanostructures. Each individual electrocatalyst was assembled with a different alkali metal intercalated between two nanosheets (NS) of manganese oxide to form a bilayer structure. Manganese oxide NS were synthesized via the exfoliation of a layered material, birnessite. Atomic force microscopy was used to determine the heights of the bilayer catalysts. The interlayer spacing of the supported bilayers positively correlates with the size of the alkali cation: NS/Cs+/NS > NS/Rb+/NS > NS/K+/NS > NS/Na+/NS > NS/Li+ / NS. The thermodynamic origins of these bilayer heights were investigated using molecular dynamics simulations. The overpotential (eta) for the OER correlates with the interlayer spacing; NS/Cs+ /NS has the lowest eta (0.45 V), while NS/Li+/NS exhibits the highest eta (0.68 V) for OER at a current density of 1 mA/cm(2). Kinetic parameters (eta and Tafel slope) associated with NS/Cs+ /NS for the OER were superior to that of the bulk birnessite phase, highlighting the structural uniqueness of these nanoscale assemblies.

关键词

KeyWords Plus:WATER OXIDATION; MOLECULAR-MODELS; HIGHLY EFFICIENT; MNO2 NANOSHEETS; BIRNESSITE; ELECTROCATALYSTS; STABILITY; REGION

作者信息

作者信息

通讯作者地址:Strongin, DR (通讯作者)

Temple Univ, Dept Chem, Beury Hall,1901 North 13th St, Philadelphia, PA 19122 USA.   增强组织信息的名称     Temple University     Pennsylvania Commonwealth System of Higher Education (PCSHE)

通讯作者地址:Strongin, DR (通讯作者)

Temple Univ, Ctr Computat Design Funct Layered Mat CCDM, Philadelphia, PA 19122 USA.   增强组织信息的名称     Temple University     Pennsylvania Commonwealth System of Higher Education (PCSHE)

地址:

	[ 1 ] Temple Univ, Dept Chem, Beury Hall,1901 North 13th St, Philadelphia, PA 19122 USA   增强组织信息的名称     Temple University     Pennsylvania Commonwealth System of Higher Education (PCSHE)
	[ 2 ] Temple Univ, Ctr Computat Design Funct Layered Mat CCDM, Philadelphia, PA 19122 USA   增强组织信息的名称     Pennsylvania Commonwealth System of Higher Education (PCSHE)     Temple University
	[ 3 ] Temple Univ, SERC, Inst Computat Mol Sci, 1925 North 12th St, Philadelphia, PA 19122 USA   增强组织信息的名称     Temple University     Pennsylvania Commonwealth System of Higher Education (PCSHE)
	[ 4 ] South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 5 ] Univ Poitiers, ENSMA, SP2MI, Inst P, Teleport 2, F-86962 Futuroscope, France   增强组织信息的名称     Ecole Nationale Superieure de Mecanique et d'Aerotechnique     University of Poitiers

电子邮件地址:dstrongi@temple.edu

出版商

AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA

类别分类