A5087673602- Advanced Battery Technologies Research
- Advancements in Battery Materials
- Fuel Cells and Related Materials
- Electrochemical Analysis and Applications
- Sensor Technology and Measurement Systems
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Advanced battery technologies research
- Advanced Battery Materials and Technologies
- Electrocatalysts for Energy Conversion
- Fault Detection and Control Systems
- Analog and Mixed-Signal Circuit Design
- Ultrasonics and Acoustic Wave Propagation
- Chemical Synthesis and Characterization
- Electronic and Structural Properties of Oxides
- Asymmetric Hydrogenation and Catalysis
- Transition Metal Oxide Nanomaterials
- Carbon Nanotubes in Composites
- Non-Destructive Testing Techniques
- Material Properties and Failure Mechanisms
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Force Microscopy Techniques and Applications
- Image and Signal Denoising Methods
- Radioactive element chemistry and processing
Institute of Problems of Chemical Physics
2015-2023
Russian Academy of Sciences
2009
Moscow State University
2004
Lomonosov Moscow State University
2001-2002
The electrochemical noise of a hydrogen-air fuel cell was measured at different current loads. Frequency dependencies power spectral densities the were calculated for all load currents. For first time, phenomenological model describing behavior proposed cell. is based on two sources noise. One them associated with Faradic resistance cathodic reaction oxygen electroreduction shunted by parallel double layer capacitance. values impedance elements are obtained each from data method. Proposed...
Instrumentation for the electrochemical noise measurement of chemical power sources is considered in this work. A high resolution NM-5 instrument based on a 32 bit "analog to digital" converter tested with different objects-a passive resistor and RC-circuits as well several systems-lithium batteries hydrogen-air fuel cells. The possibility low thermal down level 1 Ω by application shown.
The electrochemical noise of a primary lithium battery was measured at an open circuit by two experimental approaches: with filtering capacitor and the same to eliminate voltage system under test. Both methodologies give results if they are applied correctly but can sometimes cause problems. Two experiments were carried out discharge resistive load. It shown that it is very difficult provide conditions for properly operation method avoid saturation measurement device when amplifier uses high...
This paper investigates some aspects and features of electrochemical noise measurement instrumentation. A comparison the resolutions different analog-to-digital converters demonstrates that possessing a resolution at least 24 bits are preferable due to significant voltage drift systems. Operational amplifiers having various input types considered. It is shown low-noise with bipolar stages capable working low-impedance objects only, such as power sources, FET stage must be applied when...
Abstract Electrochemical noise (ECN) of operating polymer membrane hydrogen‐air fuel cell was measured in a wide frequency band. Spectral power densities the were calculated to consider its characteristics. Air flow speed on cathode side sinusoidal modulated investigate response external conditions changing. It shown that properly operated does not possess self‐resonance or peaks electrochemical dependence.
The electrochemical noise of rechargeable lithium iron(II) phosphate (LiFePO4) battery was measured for the first time during discharge using a constant value resistor. A continuous data registration technique applied to collect measurement data. standard deviation values were calculated different state charge values. Power spectral density frequency dependencies obtained as well. results showed that and spectrum slope absolute increased at end process may be used indicators over-discharge....