Energy Storage Technologies Overview

<p>Electrolyte (C)</p> Signup and view all the answers

<p>Pumped hydroelectric systems (B)</p> Signup and view all the answers

<p>Thermodynamic storage (B)</p> Signup and view all the answers

<p>They convert chemical energy directly into electrical energy. (B)</p> Signup and view all the answers

<p>They flow from the cathode to the anode. (C)</p> Signup and view all the answers

<p>Higher current discharge decreases available charge due to internal resistance. (D)</p> Signup and view all the answers

<p>Energy capacity is expressed as the product of voltage and charge capacity. (C)</p> Signup and view all the answers

<p>Voltage declines due to internal resistance. (A)</p> Signup and view all the answers

<p>Lower temperatures can prolong battery life by reducing self-discharge. (A)</p> Signup and view all the answers

<p>Energy derived from hydrogen fuel. (C)</p> Signup and view all the answers

<p>Current output (B)</p> Signup and view all the answers

<p>Internal resistance increases due to electrode degradation. (D)</p> Signup and view all the answers

<p>Power loss in a battery is calculated as current output squared times internal resistance. (C)</p> Signup and view all the answers

<p>The reaction occurs spontaneously with high voltage. (B)</p> Signup and view all the answers

<p>The voltage of the reaction at the anode is expressed as -0.35 V. (C)</p> Signup and view all the answers

<p>Summing the positive SRP at the cathode and the negative at the anode. (D)</p> Signup and view all the answers

<p>The voltage across each battery remains the same while current capacity increases. (C)</p> Signup and view all the answers

<p>The battery arrangement effectively combines their voltages. (A)</p> Signup and view all the answers

<p>Reduction occurs, leading to a positive SRP. (C)</p> Signup and view all the answers

<p>The SRP reflects the relative ease of electrode reduction. (D)</p> Signup and view all the answers

<p>It contributes positively to the total voltage in the context of reduction. (C)</p> Signup and view all the answers

Methods for storing excess electricity for later use, categorized by different storage durations and energy source types.

Energy stored by chemical reactions, including batteries and hydrogen fuel cells.

A battery consists of a negative anode, a positive cathode, and an electrolyte that separates the two electrodes.

During battery discharge, electrons flow from the anode to the cathode through a conductor, and ions move between electrodes through the electrolyte.

When a battery charges, electrons flow from the cathode to the anode through a conductor, and ions move back to their respective electrodes.

Battery efficiency is typically around 80-85% due to internal resistance and heat loss.

A chemical reaction involving both oxidation (loss of electrons) at the anode and reduction (gain of electrons) at the cathode.

Batteries gradually lose their charge over time due to ongoing internal chemical and physical processes.

A measure, in volts, of how easily an electrode is reduced. A higher SRP means more spontaneous reduction.

The electrode where reduction occurs in a redox reaction.

The electrode where oxidation occurs in a redox reaction.

Loss of electrons, opposite of reduction.

Gain of electrons, opposite of oxidation.

Connecting battery anodes and cathodes in a chain. Voltages add.

Connecting battery anodes together, and cathodes together. Current increases.

When batteries are connected in parallel, the voltage remains the same as a single battery, but the total current output increases.

A measure of a battery's total charge expressed in Amp-hours (Ah). It's the product of current (in Amps) and time (in hours).

The power lost due to a battery's internal resistance, calculated as (current output)^2 multiplied by the internal resistance.

The total energy a battery can store, calculated as Voltage multiplied by Amp-hour capacity.

Batteries need to be charged at a higher voltage than their rated voltage to ensure the electrochemical reaction completes.

Battery discharge rate decreases with decreasing temperature due to slower electrochemical reactions.

The amount of available charge declines as the discharge current (I) increases. This is due to internal resistance.

A fuel cell that uses hydrogen as fuel to produce energy; energy isn’t stored in the cell, but provided by the fuel.