Beyond carbon: resource-based insights from the life cycle assessment of lithium-ion battery recycling and reuse
カーボンを超えて：リチウムイオン電池のリサイクル・再利用のライフサイクルアセスメントからの資源ベースの知見 (AI 翻訳)
Tetsuro Kobayashi, Hiroki Tanikawa, Eiji Yamasue
🤖 gxceed AI 要約
日本語
本研究はリチウムイオン電池の製造とリサイクルにおけるCO2排出と資源消費（TMR指標）を評価。NMC532とLFPセルで製造時それぞれ1396、931 kg TMR/kWh-cellを排出し、カソードと銅の直接リサイクルでTMRを削減可能。TMR削減とCO2削減が相反する場合があることを示し、CNとCEを両立するLCA枠組みを提案。
English
This study assesses CO2 emissions and resource consumption (using TMR) in lithium-ion battery manufacturing and recycling. For NMC532 and LFP cells, manufacturing generates 1396 and 931 kg TMR/kWh-cell; direct recycling of cathode and copper can reduce TMR by 599 and 313 kg TMR/kWh-cell. A potential trade-off between TMR and CO2 reduction is revealed, offering an LCA framework for a circular battery economy balancing carbon neutrality and circularity.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は自動車・バッテリー製造大国であり、本LCAフレームワークはSSBJや資源安全保障上の政策立案・技術開発に直接活用可能。特に資源輸入依存度の高い日本にとって、CO2と資源消費のトレードオフは重要な示唆を与える。
In the global GX context
Globally, the paper advances battery LCA by incorporating resource consumption (TMR) alongside carbon metrics, informing ISSB/CSRD lifecycle disclosures and transition finance criteria for battery circularity projects. The trade-off highlights the need for multi-indicator frameworks in sustainability assessment.
👥 読者別の含意
🔬研究者:Provides a novel LCA method integrating TMR and CO2, useful for trade-off analysis and methodological development in battery recycling studies.
🏢実務担当者:Offers a framework to evaluate recycling strategies for reducing both resource consumption and carbon footprint, supporting sustainable supply chain decisions.
🏛政策担当者:Informs regulations and incentives for battery circularity, emphasizing the need to balance carbon neutrality and resource circularity.
📄 Abstract（原文）
The push toward carbon neutrality (CN) is driving the electrification of automobiles and adoption of renewable energy facilities, thereby increasing the demand for lithium-ion batteries. However, battery manufacturing involves CO 2 emissions and consumes scarce resources such as Li, Ni, and Co. Recycling and reusing spent batteries are crucial for reducing associated environmental impacts. In this study, we focused on CO 2 emissions and resource consumption, which affects the circular economy (CE). Using the total material requirement (TMR)—the total amount of substances involved, representing the environmental impact per resource type—as an indicator of resource consumption, we found that during manufacturing, the NMC532 and LFP cells generate 1396 and 931 kg TMR/kWh-cell, respectively, and that direct recycling of the cathode active material and copper after use of these cells can reduce TMR by 599 and 313 kg TMR/kWh-cell, respectively. We also found that reducing TMR can sometimes lead to an increase in CO 2 emissions, which indicates that these two factors can be conflicting in life cycle assessment (LCA). The LCA framework proposed here can serve as a practical guide, providing direction for technological development toward a circular battery economy that achieves both CN and CE.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.jpowsour.2026.240603first seen 2026-06-27 04:41:06
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