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Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Multiple Voltage Sources01:25

Multiple Voltage Sources

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Generally, a single battery is not enough to power some devices. In such cases, batteries can be combined in two ways: in series or in parallel.
In series, the positive terminal of one battery is connected to the negative terminal of another battery. Hence, the voltage of each battery is added to give the net voltage, which is increased because each battery boosts the electrons that enter it. The same current flows through each battery because they are connected in series.
Batteries are...
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DC Battery01:21

DC Battery

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A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
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Kirchoff's Rules: Application01:22

Kirchoff's Rules: Application

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Kirchhoff's rules quantify the current flowing through a circuit and the voltage variations around the loop in a circuit. Applying Kirchhoff's rules generates a set of linear equations that allow us to find the unknown values in circuits. These may be currents, voltages, or resistances.
When applying Kirchhoff's first rule, the junction rule, label the current in each branch and decide its direction. If the chosen direction is wrong, it will have the correct magnitude, although the...
2.3K
Design Example: Automobile Ignition System01:14

Design Example: Automobile Ignition System

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The automobile's ignition system plays a vital role by ensuring the timely ignition of the fuel-air mixture in each cylinder. This ignition is facilitated by a spark plug, which is composed of two electrodes separated by an air gap. A spark forms across this air gap when a substantial voltage is generated between the electrodes, leading to the ignition of the fuel.
One can generate a large voltage using a car battery of 12 volts with the help of inductors. Inductors are known for opposing...
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Energy Stored in a Capacitor: Problem Solving01:26

Energy Stored in a Capacitor: Problem Solving

1.9K
In 1749, Benjamin Franklin coined the word battery for a series of capacitors connected to store energy. Capacitors store electric potential energy that can be released over a short time. This property means capacitors have a wide range of applications.
Capacitor-discharge ignition is a type of ignition system commonly found in small engines where the energy released from a capacitor ignites an induction coil that, in turn, fires the spark plug.
To calculate the energy stored in a capacitor of...
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Updated: Mar 25, 2026

Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway
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Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway

Published on: March 7, 2022

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¿Por qué las baterías fallan?

M R Palacín1, A de Guibert2

  • 1ALISTORE-ERI European Research Institute, Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) Campus UAB, E-08193 Bellaterra, Catalonia, Spain. rosa.palacin@icmab.es.

Science (New York, N.Y.)
|February 26, 2016
PubMed
Resumen

Este estudio revisa el envejecimiento de la batería a través de sustancias químicas como los iones de litio, detallando los factores que influyen en la degradación del rendimiento. Abarca los materiales, las condiciones de uso y las estrategias de diagnóstico para varios tipos de baterías.

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Área de la Ciencia:

  • Ciencias de los materiales
  • La electroquímica
  • Sistemas de almacenamiento de energía

Sus antecedentes:

  • El envejecimiento de la batería es un problema complejo influenciado por la química, el diseño, el entorno y las condiciones operativas.
  • El conocimiento existente se deriva de extensos estudios experimentales y de modelado.
  • Comprender la degradación es crucial para el almacenamiento de energía confiable.

Objetivo del estudio:

  • Proporcionar una visión global del estado de la técnica en el envejecimiento de la batería.
  • Analizar los factores que afectan a la degradación del rendimiento en diferentes sustancias químicas de la batería.
  • Discutir estrategias de diagnóstico y desarrollos futuros para aplicaciones de baterías a gran escala.

Principales métodos:

  • Revisión de la literatura sobre los enfoques experimentales y de modelado.
  • Análisis de las propiedades del material y de las condiciones de uso (temperatura, velocidad de carga/descarga).
  • Exploración de las técnicas de diagnóstico y las tendencias futuras.

Principales resultados:

  • Examen detallado de los fenómenos de envejecimiento en las baterías de plomo-ácido, níquel-cadmio, níquel-hidruro metálico y litio-ion.
  • Identificación de los principales parámetros materiales y operativos que influyen en la vida útil de la batería.
  • Visión general de los métodos de diagnóstico actuales y sus limitaciones.

Conclusiones:

  • El envejecimiento de la batería es un proceso multifacético que requiere una comprensión holística.
  • La optimización de los materiales y parámetros operativos puede mitigar la degradación del rendimiento.
  • Las herramientas y estrategias de diagnóstico avanzadas son esenciales para los futuros sistemas de baterías a gran escala.