V3+ Incorporated β-Co(OH)2: A Robust and Efficient Electrocatalyst for Water Oxidation

被引：21
作者：
Anantharaj, Sengeni [1 ,2 ,3 ]
Karthick, Kannimuthu [1 ,2 ]
Murugan, Palanichamy [1 ,2 ]
Kundu, Subrata [1 ,2 ]
机构：
[1] Acad Sci & Innovat Res AcSIR, CSIR Cent Electrochem Res Inst CSIR CECRI Campus, New Delhi, India
[2] Cent Electrochem Res Inst, CSIR, Mat Electrochem Div Med, Karaikkudi 630006, Tamil Nadu, India
[3] Waseda Univ, Sch Adv Sci & Engn, Dept Appl Chem, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan
来源：
INORGANIC CHEMISTRY | 2020年 / 59卷 / 01期
关键词：
OXYGEN EVOLUTION REACTION; LAYERED DOUBLE HYDROXIDE; HYDROGEN EVOLUTION; ENHANCED ACTIVITY; COBALT; NANOSHEETS; CATALYSTS; OXIDE; IRO2; NANOPARTICLES;
D O I：
10.1021/acs.inorgchem.9b02977
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Catalyzing oxygen evolution reaction (OER) with the lowest possible overpotential is a key to ensure energy efficiency in the production of hydrogen from water electrochemically. In this report, we show the results that astonished us. Co hydroxide containing trivalent V was prepared chemically and screened for electrochemical water oxidation in rigorously Fe free 1 M KOH (pH 13.8). Overpotential of 198 mV at 10 mA cm(-2) was observed for the synthesized Co-V hydroxide with the optimal Tafel slope of 60 mV dec(-1). This is the lowest overpotential at this current density ever reported for OER in alkaline conditions while utilizing Co based electrocatalysts. Density function theory (DFT) calculations showed that the third elementary step (oxyhydroxide formation and delivery of O-2) was spontaneous on V site that is bridging two adjacent Co sites which was attributed to the observed enhancement.
引用
收藏
页码：730 / 740
页数：11
相关论文
共 69 条
[1]   In-Situ Growth of Ultrathin Films of NiFe-LDHs: Towards a Hierarchical Synthesis of Bamboo-Like Carbon Nanotubes [J].
Abellan, Gonzalo ;
Carrasco, Jose A. ;
Coronado, Eugenio ;
Prieto-Ruiz, Juan P. ;
Prima-Garcia, Helena .
ADVANCED MATERIALS INTERFACES, 2014, 1 (06)
[2]   Alkoxide-intercalated CoFe-layered double hydroxides as precursors of colloidal nanosheet suspensions: structural, magnetic and electrochemical properties [J].
Abellan, Gonzalo ;
Carrasco, Jose A. ;
Coronado, Eugenio ;
Romero, Jorge ;
Varela, Maria .
JOURNAL OF MATERIALS CHEMISTRY C, 2014, 2 (19) :3723-3731
[3]   Surface Interrogation Scanning Electrochemical Microscopy of Ni1-xFexOOH (0 < x < 0.27) Oxygen Evolving Catalyst: Kinetics of the "fast" Iron Sites [J].
Ahn, Hyun S. ;
Bard, Allen J. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (01) :313-318
[4]   Precision and correctness in the evaluation of electrocatalytic water splitting: revisiting activity parameters with a critical assessment [J].
Anantharaj, S. ;
Ede, S. R. ;
Karthick, K. ;
Sankar, S. Sam ;
Sangeetha, K. ;
Karthik, P. E. ;
Kundu, Subrata .
ENERGY & ENVIRONMENTAL SCIENCE, 2018, 11 (04) :744-771
[5]   Petal-like hierarchical array of ultrathin Ni(OH)2 nanosheets decorated with Ni(OH)2 nanoburls: a highly efficient OER electrocatalyst [J].
Anantharaj, S. ;
Karthik, P. E. ;
Kundu, Subrata .
CATALYSIS SCIENCE & TECHNOLOGY, 2017, 7 (04) :882-893
[6]   Self-assembled IrO2 nanoparticles on a DNA scaffold with enhanced catalytic and oxygen evolution reaction (OER) activities [J].
Anantharaj, S. ;
Karthik, P. E. ;
Kundu, Subrata .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (48) :24463-24478
[7]   Spinel Cobalt Titanium Binary Oxide as an All-Non-Precious Water Oxidation Electrocatalyst in Acid [J].
Anantharaj, Sengeni ;
Karthick, Kannimuthu ;
Kundu, Subrata .
INORGANIC CHEMISTRY, 2019, 58 (13) :8570-8576
[8]   Membrane free water electrolysis under 1.23 V with Ni3Se4/Ni anode in alkali and Pt cathode in acid [J].
Anantharaj, Sengeni ;
Karthik, Kannimuthu ;
Amarnath, Thangavel S. ;
Chatterjee, Shubham ;
Subhashini, Elangovan ;
Swaathini, Karukkampalyam C. ;
Karthick, Pitchiah E. ;
Kundu, Subrata .
APPLIED SURFACE SCIENCE, 2019, 478 :784-792
[9]   NiTe2 Nanowire Outperforms Pt/C in High-Rate Hydrogen Evolution at Extreme pH Conditions [J].
Anantharaj, Sengeni ;
Karthick, Kannimuthu ;
Kundu, Subrata .
INORGANIC CHEMISTRY, 2018, 57 (06) :3082-3096
[10]   Evolution of layered double hydroxides (LDH) as high performance water oxidation electrocatalysts: A review with insights on structure, activity and mechanism [J].
Anantharaj, Sengeni ;
Karthick, Kannimuthu ;
Kundu, Subrata .
MATERIALS TODAY ENERGY, 2017, 6 :1-26
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