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Electrochemistry
Measurement Of True Surface Area Of Powder Electrodes By The Constant Potential Square Wave Method
In the chemical power supply, rarely used by a single material manufactured plate electrode (or called the whole electrode), and most of the powder porous electrode.
Anti-corrosion Treatment of Steel and Its Corrosion Resistance Test (1)
Corrosion of steel is strongly influenced by the environment, and corrosion under moist atmospheres and other humid gases is the most common corrosion phenomenon. In addition, since steel is the most commonly used metal in the manufacture of industrial equipment, the corrosive environment of industrial electrolytes and gases is even more hostile.
Anti-corrosion Treatment of Steel and Its Corrosion Resistance Test (2)
The experiment was divided into four parts: pretreatment of the specimens, electrodeposition of Zn-Ni alloy coating, corrosion of the specimens observed by metallurgical microscope, and Tafel curve test of the specimens in NaCl.
Measurement And Analysis Of Hydrogen Precipitation From Aqueous Solutions
The precipitation of hydrogen is the most common reaction in the aqueous solution system, is the basic reaction of electrolysis of water, but also the secondary battery charging process, electroplating process is often accompanied by side reactions, therefore, is a common and important reaction in the electrochemical system.
Cyclic Voltammetry To Test Lithium Storage Behaviour Of Electrode Materials With Pseudocapacitor
Cyclic voltammetry has been widely used in electrochemical research due to its features of simple experiment, abundant information and theoretical analysis. For example, it can be used to quantitatively analyse the peak current, qualitatively analyse the peak potential difference, determine the reversibility of electrode processes, explore the electrochemical behaviour of unknown electrochemical systems, and apply it in various fields of applied electrochemistry.
Analysis Of Electrochemical Reactions In Lithium-Ion Batteries By The AC Impedance Method
The AC impedance method is also known as electrochemicalim pedance spectroscopy (EIS) when applied to electrochemical systems. The method involves controlling the current (or potential) through an electrode to vary sinusoidally with time under small amplitude conditions, and simultaneously measuring the pattern of variation of the electrode potential (or current) with time as its response, or directly measuring the AC impedance (or conductance) of the electrode.
Cyclic Voltammetry to Test Electrochemical Reactions of Metals in Solution
Cyclic voltammetry refers to controlling the potential under study to scan from the initial potential to the reverse potential at a constant speed, changing the scanning direction, scanning back to the initial potential at the same speed, and continuing to reverse the potential, repeatedly scanning, and recording the current-potential The curves are called cyclic voltammetry lines.
Application in the Determination of Chemical Resistance
To measure the chemical impedance at complex frequencies, a frequency response analyzer, known as the digital version of the lock-in amplifier, is used to make the frequency sweep easier to use.
Constant Current Charge/Discharge Method Test
Constant current charging and discharging method, also known as timing potential method. Its basic working principle is to charge and discharge the tested electrode under constant current conditions, record the change rule of its potential with time, and then study the electrode's charging and discharging performance and calculate its actual specific capacity.
Sensing Measurements
OE1022D Applied to Fiber Optic Quantum Probe Applications
Recently, Prof. Luo Yunhan and Prof. Chen Yaofei from School of Science and Technology, Jinan University published a paper titled "Nanodiamond-Based Optical-Fiber Quantum Probe for Magnetic Field and Biological Sensing" in ACS Sensors, an authoritative international chemistry journal.
OE1022 in The Study of Quantum Temperature Sensors for Nitrogen Vacancy (NV) in Diamond
In 2021, academician Guo Guangcan's team at the University of Science and Technology of China & Key Laboratory of Quantum Information, Chinese Academy of Sciences (KLQIS) published an article in Review of scientific instruments titled "A robust fiber-based quantum thermometer coupled with nitrogen-vacancy centers", reporting a quantum temperature sensor based on nitrogen-vacancy (NV) centers in diamond.
Electron Paramagnetic Resonance Measurement
Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) is one of the most informative techniques for the electronic structure of paramagnetic materials.EPR spectroscopy is particularly useful for studying chemical systems with strong local spin densities and their interactions with the environment.
Hall Effect Measurement
The Hall effect is a kind of electromagnetic effect. When the current passes through the semiconductor perpendicular to the external magnetic field, the carriers are deflected, and an additional electric field is generated perpendicular to the direction of the current and the magnetic field, thereby generating a potential difference between the two ends of the semiconductor. The phenomenon is the Hall effect. The Hall effect is widely used in material characterization and magnetic field sensing.