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Questions related from Anafi Nuraini
Hello, I would like to know how to calculate ECA (Electrochemical activity) of the catalyst on RDE for Oxygen Evolution Reaction (OER). Does anyone know the formula to calculate ECA for OER? Is...
26 July 2021 2,785 8 View
Hello everyone, Recently I am working on formation of nanowires on HOPG by electrodeposition. I started with Pd by using PdCl2 in HCl, and it worked. Pd NWs are formed on HOPG. However, my goal is...
13 December 2020 6,097 2 View
Hello everyone, Currently, I use Ni foam as working electrode. To connect with potentiostat, I connect the Ni foam with copper wire and soldering in the joint. To prevent any contact between...
10 August 2020 9,445 2 View
We know that perovskite can detect various kinds of gas, polar, and non polar VOC. Lets say we have mixed gas in the air. So how can perovskite differentiate the specific gas? How we can say that...
03 April 2019 8,681 0 View
Dear researchers, Currently I am studying the electrical response of thin film to the gas. I am using chronoamperometry to get the response in terms of current-time graph. However, I am not sure...
29 November 2018 9,410 3 View
Dear professors and researchers, I make three cell in every sample of perovskite solar cell, lets say A,B, and C cell. When I check the performance, every cell has different perfomance. For...
21 May 2018 2,891 6 View
If we do the observation of student's attitude or skills, we can not deny that there's subjectivity from the observer. So, how do we minimize the subjectivity and make sure the validity of the result?
15 December 2016 9,685 32 View
Hello, I have made a test for student to scale their scientific attitude. I used 12 question or items. Maximum point for every question is 4 and minimum score is 1. But, I still hesitate about...
10 December 2016 1,773 6 View
Now I want to investigate student's scientific attitude. Most of journals used the questionnaire. It's difficult to find the article that used essay question-answer as instruments to...
31 July 2016 9,706 4 View
I've tried to design the environment monitoring system (light intensity, temperature, and humidity) using LabVIEW interface for arduino (LIFA). I use two input, BH1750 sensor module for light...
03 April 2016 2,474 2 View
Hi everyone, Currently, I am doing the cyclic voltammetry measurement using 1 M KOH as the electrolyte. Since this electrolyte has high pH (~14), which reference electrode that most suitable for...
01 January 1970 287 12 View
Hello everyone, I would like to hear some advice for practices and testing protocols of OER activities using RDE. Currently, I am testing the OER activity of an electrocatalyst material using...
01 January 1970 8,630 10 View
Hello everyone, How do magnetic field increase the electrocatalytic activity? How do magnetic field affect the reaction process? Some of the papers mention that magnetic field generate...
01 January 1970 4,190 1 View
