Energy Storage Systems - Hydrogen

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

<p>10% – 15% (C)</p> Signup and view all the answers

<p>It relies on fossil fuel-based sources. (D)</p> Signup and view all the answers

<p>Liquid phase (A)</p> Signup and view all the answers

<p>3 times (D)</p> Signup and view all the answers

<p>Metal hydrides (D)</p> Signup and view all the answers

<p>Green (D)</p> Signup and view all the answers

<p>Reforming of natural gas (C)</p> Signup and view all the answers

<p>It is more expensive than other methods. (A)</p> Signup and view all the answers

<p>Water electrolyzer and storage reservoir (A)</p> Signup and view all the answers

<p>High temperature and high pressure (D)</p> Signup and view all the answers

<p>Hydrogen produced with carbon capture and storage (A)</p> Signup and view all the answers

<p>Photovoltaic panel (D)</p> Signup and view all the answers

<p>To chemically decompose water using electric current (B)</p> Signup and view all the answers

<p>70-80% (C)</p> Signup and view all the answers

<p>30-80 °C (B)</p> Signup and view all the answers

<p>Proton exchange membrane (C)</p> Signup and view all the answers

<p>4.0-7.0 kWh/m3 (A)</p> Signup and view all the answers

<p>Solid oxide electrolysis (D)</p> Signup and view all the answers

<p>500-850 °C (C)</p> Signup and view all the answers

<p>Proton exchange membrane (PEM) electrolysis (C)</p> Signup and view all the answers

Hydrogen is a clean fuel that produces zero emissions during use (except for water vapor) when generated by renewable energy sources.

The energy content of hydrogen is significantly higher than diesel fuel and natural gas, making it a promising candidate for long-term energy storage.

Hydrogen can be produced from electricity using electrolysis, and the reverse process, converting hydrogen back to electricity, is achieved through fuel cells.

Hydrogen's low weight density presents a storage challenge, requiring large volumes to store even small masses.

High-pressure compression (350-700 bar) is a common method for storing hydrogen, but it requires an energy investment.

Storing hydrogen as a liquid at extremely low temperatures (-253°C) is another technique, but it demands considerable energy for cooling.

Metallic hydrides and chemical methods offer alternative means of storing hydrogen using metals like magnesium or aluminum.

Producing hydrogen from renewable energy sources, such as solar or wind, is a cleaner and more sustainable approach than traditional methods using fossil fuels.

Hydrogen storage method where hydrogen is chemically bonded within a metal, creating a solid compound. Example: MgH2 (Magnesium Hydride).

A process that converts electrical energy into chemical energy by splitting water into hydrogen and oxygen using electrolysis.

The conversion of natural gas or other fossil fuels into hydrogen. This process releases carbon dioxide, contributing to climate change.

A type of hydrogen production where renewable energy sources are used to power the electrolysis process, resulting in low-emission hydrogen.

Hydrogen produced from fossil fuels with carbon capture and storage technology to reduce greenhouse gas emissions.

The process of removing carbon dioxide from the atmosphere and storing it, often underground.

A system that stores energy as hydrogen. Water is first electrolyzed into hydrogen and oxygen, then the hydrogen is stored and later used in a fuel cell to generate electricity.

A device that converts hydrogen and oxygen into electricity through a chemical reaction.

Electrolysis of water is a process used to produce high-purity hydrogen.

An electrolyzer is a device that uses electricity to break down water into hydrogen and oxygen.

An electrolyzer has two electrodes (anode and cathode) separated by an electrolyte, which conducts electricity through ions.

Alkaline electrolysis (AE) is a mature technology that uses an alkaline solution as the electrolyte to produce hydrogen and oxygen.

Proton Exchange Membrane (PEM) electrolysis uses a membrane that allows only protons (H+) to pass through, leading to highly pure hydrogen production.

Solid Oxide Electrolysis (SOE) is a high-temperature process that uses a solid oxide membrane to produce hydrogen, often from steam.

AE, PEM, and SOE are different types of water electrolyzers with varying operating temperatures, efficiencies, and hydrogen purity levels.