Upcycling Spent Cathodes from Li–Ion Batteries into a High-Entropy Alloy Catalyst with Reverse Electron Transfer for Li–O2 Batteries DOI
Peng Wang, Shan Guo, Yongbin Xu

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Traditional recovery of valuable metals from spent ternary lithium-ion batteries concentrates on complicated pyrometallurgy and hydrometallurgy routes. Direct reutilization these used to catalyze Li-O2 is highly appealing yet remains a significant challenge. Here, we report general synthesis ultrafine αNiCoMn (α = Pt, Ir, Ru) high-entropy alloy (HEA) nanoparticles anchored nitrogen-doped carbon (N-C) support through facile one-step Joule heating, which serves as high-efficiency catalyst for batteries. Solution alloying recycled NiCoMn with Pt group facilitates catalytic efficiency 3d-5d electronic interactions the assembly effect. Both experimental calculation results reveal that, driven by rapid, nonequilibrium thermal shock, electron transfer defies conventional expectations, where electrons are inclined higher electronegative surrounding atoms. This interesting reverse local charge redistribution orbital hybridization endow an elevated d-band center optimized structure. The induced coordination effects further generate active catalysis surfaces, favoring adsorption LiO2 intermediates facilitating rapid decomposition kinetics nanoscale Li2O2 products. These advantages HEA@N-C superior bifunctional activity, achieving ultralow polarization 0.27 V significantly enhanced cycling life 240 cycles. We anticipate that this work will provide insights into upcycling constructing efficient HEA electrocatalysts.

Language: Английский

Unveiling the potential of high-entropy materials toward high-energy metal batteries based on conversion reactions: synthesis, structure, properties, and beyond DOI
Ma Lian,

Weiqian Gong,

Shaofei Guo

et al.

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104054 - 104054

Published: Jan. 1, 2025

Language: Английский

Citations

0
High Entropy Oxide-Polyoxometalate Sub-1 nm Hetero-Nanowires as Cathode Catalysts in Li–O2 Batteries DOI

Huaiyun Ge,

Wenxiong Shi, Junli Liu

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

It is desirable for lithium-oxygen batteries (LOBs) to fabricate the cathode catalysts with high catalytic activity and stability. High entropy oxide (HEO) sub-1 nm nanowires (SNWs) nearly 100% active site exposure intrinsic stability are doubtless one of best candidates. Herein, under a mild solvothermal condition, by incorporating phosphomolybdic acid (PMA) into multimetal reaction system, series HEO-PMA SNWs successfully prepared, where variety metal oxides adjustable from mono component six components. When these as applied LOBs, capacity cycling LOBs steadily improved species increasing stepwise, indicating that modulation effect plays an important role in enhancing battery performance. Additionally, considering difference various oxides, performance further optimized keeping number elements constant just adjusting kind oxide. Particularly, BiCuFeCeWPtOx-PMA based delivers (11206 mA h g-1) excellent 213 cycles, making it promising electrocatalyst candidate LOBs.

Language: Английский

Citations

0
Unlocking the potential of high entropy alloys in Electrocatalytic reactions: A review DOI
Qiang Xiang, Dongming Qi, Jiawei Feng

et al.

Journal of Electroanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 119083 - 119083

Published: March 1, 2025

Language: Английский

Citations

0
High-entropy alloy nanoparticles functionalized with reduced graphene oxide as a high-performance cathode for lithium–oxygen batteries DOI
Runsheng Wu, Qichen Zhang,

Qingchao Yang

et al.

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The rGO and HEA NPs synergistically optimized the reversible generation/decomposition kinetics of discharge product Li 2 O , resulting in excellent electrochemical performance lithium–oxygen battery based on PtFeCoNiCu@rGO.

Language: Английский

Citations

0
Upcycling Spent Cathodes from Li–Ion Batteries into a High-Entropy Alloy Catalyst with Reverse Electron Transfer for Li–O2 Batteries DOI
Peng Wang, Shan Guo, Yongbin Xu

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Traditional recovery of valuable metals from spent ternary lithium-ion batteries concentrates on complicated pyrometallurgy and hydrometallurgy routes. Direct reutilization these used to catalyze Li-O2 is highly appealing yet remains a significant challenge. Here, we report general synthesis ultrafine αNiCoMn (α = Pt, Ir, Ru) high-entropy alloy (HEA) nanoparticles anchored nitrogen-doped carbon (N-C) support through facile one-step Joule heating, which serves as high-efficiency catalyst for batteries. Solution alloying recycled NiCoMn with Pt group facilitates catalytic efficiency 3d-5d electronic interactions the assembly effect. Both experimental calculation results reveal that, driven by rapid, nonequilibrium thermal shock, electron transfer defies conventional expectations, where electrons are inclined higher electronegative surrounding atoms. This interesting reverse local charge redistribution orbital hybridization endow an elevated d-band center optimized structure. The induced coordination effects further generate active catalysis surfaces, favoring adsorption LiO2 intermediates facilitating rapid decomposition kinetics nanoscale Li2O2 products. These advantages HEA@N-C superior bifunctional activity, achieving ultralow polarization 0.27 V significantly enhanced cycling life 240 cycles. We anticipate that this work will provide insights into upcycling constructing efficient HEA electrocatalysts.

Language: Английский

Citations

0