Closed‐Loop Recycling Methods to Treat Spent Cathode: Efficient and Direct Regeneration

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract Direct regeneration of spent lithium batteries (LIBs) cathodes has emerged as a transformative regimen to address the urgent need for sustainable recycling methods and mitigate critical shortage metal resources driven by escalating LIB demand. Unlike conventional focused on extraction separation, direct restores functionality cathode in situ, streamlining process enhancing efficiency. Effective necessitates comprehensive understanding failure mechanisms pretreatment processes. Critical strategies include reducing (Li) migration barrier enable complete reinsertion into structure minimizing Li‐transition anti‐site defects reconstruct lattice. This review summarizes advancements mechanisms, techniques, cathode, emphasizing principles innovations regeneration. By evaluating advantages limitations current approaches, opportunities are identified innovation overcome existing challenges. Future research priorities proposed advance technologies, fostering more efficient systems.

Язык: Английский

---

Multifunctional Spinel Structure for Efficient Direct Recycling of Spent Layered Cathodes into Fast‐Charging Materials

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

Abstract Direct recycling is increasingly recognized as a promising solution to alleviate the burgeoning contradiction between growing demand for lithium‐ion batteries (LIBs) and amidst resource shortages. A critical challenge in this process achieving efficient lithium compensation, which vital replenishing lost elements promoting reconstruction of degraded structures. Herein, inspired by concept “recycle waste with waste,” channel‐assisted regeneration strategy proposed that utilizes spinel materials reconstruct surface spent layered cathode, clearing blocked channels transforming them into 3D structure facilitates rapid transmission. This approach enhances replenishment exogenous salts particle lattice prevents intrinsic thermal decomposition during heat treatment due element deficiencies. The presence ion can also improve fast‐charging performance regenerated cathode material, capacity retention rate 87.9% after 500 cycles at 10 C. Additionally, its overall electrochemical significantly outperforms commercial materials. work addresses challenges direct solid‐phase offers valuable insights optimizing next‐generation LIB technologies.

Язык: Английский

---

Direct Regeneration of High-Performance Cathode Materials from Spent LCO Batteries through In Situ Utilization of Aluminum

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104287 - 104287

Опубликована: Апрель 1, 2025

Язык: Английский

---

Inherent fluorine impurity enhances the regeneration of highly degraded layered cathodes with suppressed lattice oxygen escape

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162855 - 162855

Опубликована: Май 1, 2025

Язык: Английский

---

The Fischer‐lactonization‐driven mechanism for ultra‐efficient recycling of spent lithium‐ion batteries

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Hydrometallurgy remains a major challenge to simplify its complex separation and precipitation processes for spent lithium-ion batteries (LIBs). Herein, we propose Fischer-lactonization-driven mechanism the cascade reaction of leaching chelation LIBs. Citric acid undergoes two-step dissociation carboxylic (-COOH) complexes with leached metal ion, while residual -COOH is attacked by H protons form protonated carboxyl ion (-COO -). Subsequently, lone pair electrons in hydroxyl same molecule attack carbon atom -COO - facilitate ester bonding, leading formation lactonized gel. The rates Li, Ni, Co Mn are 99.3, 99.1, 99.5 99.2 %, respectively. regenerated monocrystalline LiNi

Язык: Английский

---

Engineering a superionic conductor surface enables fast Na+ transport kinetics for high-stable layered oxide cathode

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 678, С. 608 - 618

Опубликована: Сен. 16, 2024

Язык: Английский

---

The Fischer‐lactonization‐driven mechanism for ultra‐efficient recycling of spent lithium‐ion batteries

Angewandte Chemie, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract Hydrometallurgy remains a major challenge to simplify its complex separation and precipitation processes for spent lithium‐ion batteries (LIBs). Herein, we propose Fischer‐lactonization‐driven mechanism the cascade reaction of leaching chelation LIBs. Citric acid undergoes two‐step dissociation carboxylic (−COOH) complexes with leached metal ion, while residual −COOH is attacked by H protons form protonated carboxyl ion (−COO −). Subsequently, lone pair electrons in hydroxyl same molecule attack carbon atom −COO − facilitate ester bonding, leading formation lactonized gel. The rates Li, Ni, Co Mn are 99.3, 99.1, 99.5 99.2 %, respectively. regenerated monocrystalline LiNi 0.5 0.2 0.3 O 2 (NCM523) has uniform particle size distribution complete lamellar structure, capacity retention rate 70.6 % after 250 cycles at C. achieves one‐step reaction, energy consumption emissions only 26 44 respectively, that conventional hydrometallurgical. strategy double breakthrough simplifying process improving environmental friendliness, offering sustainable approach re‐utilization

Язык: Английский

---

Recovery of spent LiFePO4: Unveiling iron migration mechanism towards selective lithium extraction

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 131314 - 131314

Опубликована: Дек. 1, 2024

Язык: Английский

---