Exporting Used EVs Halves Lithium-ion Battery Recovery Potential

Why It Matters

Understanding material flows within product lifecycles is crucial for developing effective resource management strategies. This insight highlights how international trade and disposal practices can directly impact the availability of valuable materials for recycling, influencing supply chain sustainability and the feasibility of circular economy models.

Key Finding

The majority of used electric vehicles are exported, meaning their valuable lithium-ion batteries are not available for domestic recycling. This, combined with the uneconomical recovery of certain materials like manganese and losses during processing, severely limits the overall material recovery potential.

Key Findings

• Approximately 76.5% of used electric vehicles were exported, significantly limiting the domestic availability of lithium-ion batteries for recycling.
• Recovery rates for key battery materials varied widely, with manganese showing a near-zero recovery rate due to economic impracticality.
• Losses of valuable materials occurred through incineration and wastewater discharge.

Research Evidence

Aim: What is the material flow of electric vehicle lithium-ion batteries within a national context, and how do current disposal and export practices affect the potential for material recovery and recycling?

Method: Material Flow Analysis (MFA) and Substance Flow Analysis (SFA)

Procedure: The study conducted a mass-based Material Flow Analysis and a Substance Flow Analysis for electric vehicle lithium-ion batteries. It mapped 33 systems and 170 flows across manufacturing, consumption, discharge/collection, and treatment stages, utilizing national statistics and data from commercial facilities. Specific attention was paid to the recovery rates of key elements like nickel, cobalt, manganese, and lithium.

Context: Electric Vehicle (EV) Lithium-ion Battery (LIB) lifecycle management in the Republic of Korea.

Design Principle

Design for circularity must consider geopolitical and economic factors that influence material recovery pathways.

How to Apply

When designing products with valuable or critical materials, investigate the typical end-of-life pathways in your target markets, including export potential, and assess how these pathways impact the feasibility of material recovery and circularity.

Limitations

The analysis is specific to the Republic of Korea and may not be generalizable to other regions with different export/import policies and recycling infrastructures. Economic viability of recovery is a major constraint.

Student Guide (IB Design Technology)

Simple Explanation: When electric cars are sold as used in other countries, their batteries can't be recycled at home, meaning we lose out on valuable materials.

Why This Matters: This research shows that even if a product is designed for recycling, external factors like international trade can prevent those materials from being recovered, impacting the sustainability of your design project.

Critical Thinking: If a product is designed for maximum recyclability, but the majority of used products are exported, does the initial design for recyclability still hold significant value in its original market?

IA-Ready Paragraph: The material flow analysis of electric vehicle lithium-ion batteries reveals that a significant portion of these valuable components are lost to domestic recycling streams due to the export of used vehicles (approximately 76.5% in the Republic of Korea). This highlights a critical challenge in achieving circularity, as international trade practices can severely limit the availability of materials for recovery, underscoring the need for design strategies that account for global end-of-life pathways and economic recovery constraints.

Project Tips

• Consider the global supply chain and disposal routes for your product.
• Investigate the economic feasibility of recovering different materials from your product's components.
• Research policies related to product end-of-life management in your target market.

How to Use in IA

• Use this study to justify the importance of considering global material flows and export markets in your design project's lifecycle assessment.
• Reference the findings on material recovery rates to highlight potential challenges and opportunities for your chosen materials.

Examiner Tips

• Demonstrate an understanding of how global trade can impact the circularity of products.
• Discuss the economic factors that influence the viability of material recovery.

Independent Variable: ["Export rate of used electric vehicles","Economic viability of material recovery"]

Dependent Variable: ["Domestic lithium-ion battery recovery rate","Material recovery rates (Ni, Co, Mn, Li)"]

Controlled Variables: ["National statistics on EV sales and battery replacements","Data from commercial facilities","Material composition of LIBs"]

Strengths

• Comprehensive material flow analysis covering multiple stages of the battery lifecycle.
• Inclusion of both mass-based and substance-based analysis for detailed insights.

Critical Questions

• How can policy incentivize domestic recycling over export of used products?
• What technological advancements could make the recovery of lower-value materials like manganese economically feasible?

Extended Essay Application

• Investigate the material flows of a specific electronic component in your region, considering export and import data.
• Analyze the economic feasibility of recovering different materials from a chosen product and propose design modifications to improve recovery.

Source

A Material Flow Analysis of Electric Vehicle Lithium-ion Batteries: Sustainable Supply Chain Management Strategies · Sustainability · 2025 · 10.3390/su17104560