Ammonia: A Liquid Renewable Energy Carrier with 10x Battery Energy Density

Why It Matters

This insight is crucial for designers and engineers developing energy storage and transportation systems. It highlights a viable alternative to hydrogen's storage challenges, potentially enabling more efficient and widespread adoption of renewable energy sources.

Key Finding

Ammonia is a promising liquid energy carrier that is easier to store and transport than hydrogen, offering higher energy density than batteries and utilizing existing infrastructure, while also aiding in CO2 emission reduction.

Key Findings

• Ammonia can be stored as a liquid at reasonable pressures.
• Ammonia's liquid energy density is approximately half that of gasoline and ten times that of batteries.
• Ammonia can utilize existing storage and distribution networks.
• Ammonia synthesis technologies are advancing.
• Ammonia is a versatile fuel for transport, industry, and power sectors, contributing to CO2 emission reduction.

Research Evidence

Aim: To evaluate the potential of ammonia as a renewable energy carrier, focusing on its synthesis, storage, and application in reducing greenhouse gas emissions.

Method: Literature Review

Procedure: The researchers conducted a comprehensive review of existing studies and current research on ammonia synthesis technologies (photocatalysis, electrocatalysis, plasmacatalysis) and its viability as a fuel in various sectors.

Context: Renewable energy systems and energy storage solutions

Design Principle

Maximize energy density and leverage existing infrastructure for efficient energy carrier systems.

How to Apply

When designing energy storage solutions for applications requiring high energy density and portability, consider ammonia as a primary candidate, especially where existing liquid fuel infrastructure can be adapted.

Limitations

The review focuses on technical advances and does not deeply explore economic viability or safety protocols associated with ammonia handling.

Student Guide (IB Design Technology)

Simple Explanation: Ammonia can be stored as a liquid, making it easier to transport and use than hydrogen. It holds much more energy than batteries and can use the same pipes and trucks we use for gas and oil now, helping us use more clean energy.

Why This Matters: Understanding different energy carriers like ammonia is important for designing innovative solutions that can effectively store and distribute renewable energy, addressing the challenges of intermittency.

Critical Thinking: While ammonia offers advantages, what are the primary safety and environmental concerns associated with its large-scale production and use as a fuel, and how might these be mitigated in a design context?

IA-Ready Paragraph: The research by Hasan et al. (2021) highlights ammonia as a promising liquid renewable energy carrier due to its high energy density (ten times that of batteries) and compatibility with existing storage and distribution networks, offering a practical solution for renewable energy storage and transport.

Project Tips

• When researching energy storage, consider the physical properties of different energy carriers.
• Investigate how existing infrastructure can be adapted for new energy technologies.

How to Use in IA

• Use this research to justify the selection of ammonia as an energy carrier in your design project, citing its advantages in energy density and infrastructure compatibility.

Examiner Tips

• Demonstrate an understanding of the trade-offs between different energy storage solutions, including their physical properties and infrastructure needs.

Independent Variable: ["Type of energy carrier (e.g., Ammonia, Hydrogen, Battery)","Synthesis method for ammonia"]

Dependent Variable: ["Energy density (e.g., MJ/L, MJ/kg)","Storage complexity","Infrastructure compatibility","Greenhouse gas emission reduction potential"]

Controlled Variables: ["Pressure and temperature conditions for storage","Application sector (transport, industry, power)"]

Strengths

• Provides a comprehensive overview of ammonia's potential as an energy carrier.
• Highlights key technical advancements in ammonia synthesis.

Critical Questions

• What are the energy conversion efficiencies when using ammonia as a fuel compared to other sources?
• What are the specific challenges and costs associated with retrofitting existing infrastructure for ammonia transport and storage?

Extended Essay Application

• Investigate the feasibility of designing a localized energy storage system using ammonia for a specific off-grid application, considering its energy density and existing infrastructure.

Source

A Comprehensive Review on the Recent Development of Ammonia as a Renewable Energy Carrier · Energies · 2021 · 10.3390/en14133732