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DOI	10.1039/c7ee03457a
	Precision and correctness in the evaluation of electrocatalytic water splitting: Revisiting activity parameters with a critical assessment
	Anantharaj S.; Ede S.R.; Karthick K.; Sam Sankar S.; Sangeetha K.; Karthik P.E.; Kundu S.
发表日期	2018
ISSN	17545692
起始页码	744
结束页码	771
卷号	11 期号:4
英文摘要	The number of research reports published in recent years on electrochemical water splitting for hydrogen generation is higher than for many other fields of energy research. In fact, electrochemical water splitting, which is conventionally known as water electrolysis, has the potential to meet primary energy requirements in the near future when coal and hydrocarbons are completely consumed. Due to the sudden and exponentially increasing attention on this field, many researchers across the world, including our group, have been exerting immense efforts to improve the electrocatalytic properties of the materials that catalyze the oxygen evolution reaction (OER) at the anode and the hydrogen evolution reaction (HER) at the cathode, aided by the recent revolutionary discovery of nanomaterials. However, the pressure on the researchers to publish their findings rapidly has caused them to make many unnoticed and unintentional errors, which is mainly due to lack of clear insight on the activity parameters. In this perspective, we have discussed the use and validity of ten important parameters, namely overpotential at a defined current density, iR-corrected overpotential at a defined current density, Tafel slope, exchange current density (j0), mass activity, specific activity, faradaic efficiency (FE), turnover frequency (TOF), electrochemically active surface area (ECSA) and measurement of double layer capacitance (Cdl) for different electrocatalytic materials that are frequently employed in both OER and HER. Experimental results have also been provided in support of our discussions wherever required. Using our critical assessments of the activity parameters of water splitting electrocatalysis, researchers can ensure precision and correctness when presenting their data regarding the activity of an electrocatalyst. © 2018 The Royal Society of Chemistry.
英文关键词	Current density; Electrocatalysis; Electrocatalysts; Electrochemical electrodes; Hydrogen production; Double-layer capacitance; Electrocatalytic materials; Electrocatalytic properties; Electrochemically active surface areas; Exchange current densities; Faradaic efficiencies; Hydrogen evolution reactions; Oxygen evolution reaction; Parameter estimation; catalysis; electrochemistry; error analysis; experimental study; hydrocarbon; hydrogen; parameterization; power generation; precision
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190275
作者单位	Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Electrochemical Research Institute (CECRI), Campus, New Delhi, India; Electrochemical Materials Science (ECMS) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630006, India; Department of Chemistry, Indian Institute of Science Education and Research (IISER), Mohali Punjab, India
推荐引用方式 GB/T 7714	Anantharaj S.,Ede S.R.,Karthick K.,et al. Precision and correctness in the evaluation of electrocatalytic water splitting: Revisiting activity parameters with a critical assessment[J],2018,11(4).
APA	Anantharaj S..,Ede S.R..,Karthick K..,Sam Sankar S..,Sangeetha K..,...&Kundu S..(2018).Precision and correctness in the evaluation of electrocatalytic water splitting: Revisiting activity parameters with a critical assessment.Energy & Environmental Science,11(4).
MLA	Anantharaj S.,et al."Precision and correctness in the evaluation of electrocatalytic water splitting: Revisiting activity parameters with a critical assessment".Energy & Environmental Science 11.4(2018).