Related Experiment Video
Updated: Aug 31, 2025
05:29
Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site
Published on: July 24, 2018
7.7K
Engineering Self-Powered Electrochemical Sensors Using Analyzed Liquid Sample as the Sole Energy Source.
Sunil Kumar Sailapu1, Carlo Menon1
1Biomedical and Mobile Health Technology (BMHT) lab, Department of Health Sciences and Technology, ETH Zürich, Zürich, 8008, Switzerland.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 18, 2022
Summary
Self-powered electrochemical sensors (SPES) harness energy from analyzed fluids like blood or river water. This review explores engineering and sensing strategies for these low-power, fluid-fueled devices.
Area of Science:
- Electrochemistry
- Sensor Technology
- Environmental Science
Background:
- Electrochemical sensors are vital for healthcare and environmental monitoring.
- Miniaturization of sensors, especially for point-of-care and wearable devices, reduces energy requirements.
- Emerging sensors can operate using power harvested directly from the analyzed fluid sample.
Purpose of the Study:
- To review sensing and engineering approaches for self-powered electrochemical sensors (SPES).
- To categorize SPES systems based on their power generation mechanisms.
- To discuss the advantages, disadvantages, prospects, and challenges of different SPES categories.
Main Methods:
- Review of literature on self-powered electrochemical sensing technologies.
- Categorization of SPES based on enzyme-based, battery-based, and ion-selective electrode systems.
- Analysis of engineering strategies including reaction selection, cell design, and sensing techniques.
Main Results:
- SPES can be engineered to operate using chemical species present in the analyzed liquid.
- Different SPES categories (enzyme-based, battery-based, ion-selective electrode-based) offer unique benefits and drawbacks.
- Successful SPES design requires careful integration of reactions, cell architecture, and sensing methods.
Conclusions:
- SPES offer a promising low-power sensing solution by utilizing energy from the sample matrix.
- Further research is needed to overcome challenges and realize the full potential of SPES in various applications.
- The review provides a comprehensive overview of current SPES technologies and future directions.
Keywords:
batteriesbiofuel cellselectrochemical systemsenzymesion-selective electrodesionsself-powered sensorsMore Related Videos
Related Concept Videos
01:15Potentiometry: Membrane Electrodes
756
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
756
01:17Controlled-Potential Coulometry: Electrolytic Methods
260
Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential...
The chosen potential...
260
01:10Amperometry: Overview
715
Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...
715
01:17Electrodes: Overview
1.8K
Electrochemical measurements are conducted in an electrochemical cell composed of various components that control and measure the current and potential. One fundamental component is electrodes, conductive materials that enable electron transfer reactions at their surfaces.
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in...
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in...
1.8K
01:06Interfacial Electrochemical Methods: Overview
364
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
364
01:19Potentiometry: Types of Electrodes
892
Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
892