Hierarchically Engineered Transition Metal Electrode for Direct Lithium Extraction From Brine
ハイアラーキカルに設計された遷移金属電極による塩水からの直接リチウム抽出 (AI 翻訳)
Ankit Kumar Tripathi, Lixue Jiang, Thành Trần-Phú, D. Gunawan, Yihao Shan, Adhi Satriyatama, Liming Dai, Rose Amal, Rahman Daiyan
🤖 gxceed AI 要約
日本語
本研究は、火炎噴霧熱分解法で合成した三酸化タングステン（WO3）ナノ粒子に還元グラフェン酸化物由来の炭素を表面修飾した新規材料を用いて、合成塩水からリチウムを抽出する手法を提案。インターカレーション容量は3 mmol Li g-1 h-1、回収効率は43%を示した。X線光電子分光法およびX線吸収分光法により、リチウムインターカレーション時のW6+の還元と脱インターカレーション時の再酸化を確認。本材料が塩水からのリチウム抽出に有効であることを実証した。
English
This study proposes a novel material—tungsten trioxide (WO3) nanoparticles synthesized via flame spray pyrolysis and surface-modified with reduced graphene oxide-derived carbon—for lithium extraction from synthetic brine. It achieves an intercalation capacity of 3 mmol Li g⁻¹ h⁻¹ and a recovery efficiency of 43%. XPS and XAS analyses confirm W6+ reduction during intercalation and reoxidation upon deintercalation. The work establishes carbon-modified WO3 as an efficient material for lithium extraction from aqueous brines, elucidating the intercalation/deintercalation mechanism.
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
本研究成果は、リチウムイオン電池の主要原料であるリチウムの新たな供給源確保に寄与する。日本はリチウムの多くを輸入に依存しており、国内での効率的な抽出技術の開発は資源安全保障の観点から重要。また、EV化や蓄電システムの普及に伴い、安定したリチウム供給がGX実現の鍵となる。
In the global GX context
This paper addresses the critical need for sustainable lithium sourcing, a key enabler for EV batteries and energy storage in the global energy transition. The novel electrode material offers a potential pathway to extract lithium from brine resources, reducing reliance on traditional hard-rock mining and improving supply chain resilience. For global GX, this contributes to securing materials for clean energy technologies.
👥 読者別の含意
🔬研究者:Reveals a new electrode material (carbon-modified WO3) with promising lithium extraction performance and provides mechanistic insights through in-situ XAS analysis.
🏢実務担当者:Offers a potential technology for direct lithium extraction from brine, which could be applied by mining and battery material companies to produce lithium more efficiently.
🏛政策担当者:Highlights the importance of investing in innovative extraction technologies to secure critical mineral supply chains for the energy transition.
📄 Abstract（原文）
The global transition to net‐zero has positioned lithium (Li) as a critical mineral for electrification and energy storage. While the electrochemical intercalation/deintercalation (EID) approach from unconventional brine sources offers a promising Li extraction pathway, it is typically challenged by electrode materials that rely on critical minerals such as Mn, Co, and Li, which present stability issues and require prior electrode delithiation. This study investigates the potential of tungsten trioxide (WO 3 ) nanoparticles synthesized via flame spray pyrolysis (FSP) and further surface modified with reduced graphene oxide (rGO) derived carbon as a novel material for lithium extraction from synthetic brine (Li~1057 ppm), exhibiting intercalation capacity of 3 mmol Li g −1 h −1 with recovery efficiency of 43% in simulated Hombre Muerto brine. X‐ray photoelectron spectroscopy (XPS) analysis confirmed W 6+ reduction and Li 1s peaks upon intercalation into WO 3 . Through a suite of in‐situ and ex‐situ X‐ray absorption spectroscopy (XAS) measurements, we demonstrate reduction of W 6 ⁺ during Li intercalation, followed by reoxidation upon deintercalation. This work establishes carbon modified WO 3 as an efficient material for lithium extraction from aqueous brines while elucidating the underlying intercalation/deintercalation mechanism.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/cey2.70270first seen 2026-06-05 05:26:00
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