使用済みリチウムイオン電池の二酸化炭素回収吸着材へのアップサイクル実現可能性
Feasibility of Upcycling Spent Lithium-ion Battery to Carbon Dioxide Capture Adsorbent (原題)
Frank Chimezie Onwudinjo
🤖 gxceed AI 要約
日本語
使用済みリチウムイオン電池（SLIB）を高温CO2吸着材であるオルトケイ酸リチウム（Li4SiO4）へ転換する実現可能性を検討した研究。酸浸出法（シナリオ1）と熱分解ベース法（シナリオ2）の2経路を比較し、材料特性・CO2吸着性能・TEA・LCAを評価した。シナリオ2は吸着容量が高い一方、サイクル安定性はシナリオ1が優れる。TEAでは両経路とも経済的に成立し、シナリオ1がより低コスト・高NPVと示された。
English
This study assesses upcycling spent lithium-ion batteries (SLIB) into lithium orthosilicate (Li4SiO4), a high-temperature CO2 sorbent, via acid-leaching (Scenario 1) and pyrolysis-based (Scenario 2) routes. Scenario 2 showed higher isothermal capacity (0.18–0.33 g CO2/g) but degraded over cycles, while Scenario 1 maintained ~99.5% adsorption potential. Techno-economic analysis found both feasible, with Scenario 1 yielding lower cost (MSP US$3.49/kg) and a ~2.8-year payback.
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
資源循環とCCUSを結びつける研究で、電池リサイクル規制（EU電池規則等）への対応を迫られる日本企業にとって、廃電池の新たな価値化経路として示唆に富む。SSBJ開示における循環経済・スコープ3排出削減の取り組み説明にも援用可能。
In the global GX context
Links battery circularity with CCUS, offering a concrete upcycling pathway relevant to emerging battery-recycling regulation (e.g., EU Battery Regulation) and to corporate circular-economy and Scope 3 disclosures under ISSB/CSRD.
👥 読者別の含意
🔬研究者:廃電池由来Li4SiO4の合成経路とサイクル安定性・TEA/LCAの比較データを、CCUS材料研究のベンチマークとして活用できる。
🏢実務担当者:廃電池のリサイクル・アップサイクル事業化検討や、循環経済・スコープ3削減の開示ストーリー構築に使える。
🏛政策担当者:電池リサイクル政策とCCUS推進策を接続する際の、経済性・環境性の定量的根拠として参照できる。
📄 Abstract（原文）
This study investigates the feasibility of repurposing spent lithium-ion battery (SLIB) to lithium orthosilicate (Li4SiO4), a high temperature carbon dioxide sorbent. Two synthesis pathways including conventional acid-leaching method (Scenario 1) and a pyrolysis-based route (Scenario 2) were explored. Additionally, techno-economic analysis (TEA) and lifecycle assessment (LCA) of the two processes were also performed. Different analytical characterization techniques were performed to understand the material properties of Li4SiO4 including surface area, crystallinity, morphology and thermal stability. CO2 capture performance of the synthesized Li4SiO4 was tested in a thermogravimetric analyzer (TGA) using dynamic, isothermal and cyclic methods. Dynamic test shows the adsorption-desorption peak temperatures of 602oC and 500oC for the leaching-based and pyrolysis-based sorbents respectively. The material produced from Scenario 1 had an isothermal CO2 capture capacity ranging from 0.10 – 0.27 g CO2/ g of sorbent. On the contrary, Scenario 2 had a higher adsorption capacity ranging from 0.18 – 0.33 g CO2/ g of sorbent. Over 10 cycles, cyclic CO2 capture was performed for about 1500 min using the leaching-based and pyrolysis-based sorbents, showing that an adsorption potential of 99.5% was consistently maintained by scenario 1’s sorbent, while scenario 2 experienced a drastic decline in adsorption rate with 88% as its lowest. The TEA shows that Scenario 1 yields a minimum selling price (MSP) of US$ 3.49/kg and a payback period (PBP) of ≈ 2 years and 10 months, while Scenario 2 results in an MSP of US$ 3.65/kg and a PBP of ≈ 3 years. Both pathways are economically feasible. However, Scenario 1 demonstrates a lower production cost and higher net present value under base-case assumptions.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.13140/rg.2.2.22395.27682first seen 2026-10-17 04:46:06
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。