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

Highly exposed PtPdTe alloy planting with oxyphilic Cu single sites boosting durable multiple alcohol oxidation electrocatalysis DOI
Qin Rong, Chao Ma,

Junyao Wu

et al.

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

1
Facet Engineering of Weyl Semimetals for Efficient Hydrogen Evolution Reaction DOI Creative Commons
Ting Wai Lau, Qiong Lei, Jun Yin

et al.

Materials Today Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 100091 - 100091

Published: Feb. 1, 2025

Language: Английский

Citations

1
Achieving Near Infrared Photodegradation by the Synergistic Effect of Z‐Scheme Heterojunction and Antenna of Rare Earth Single Atoms DOI Open Access

Jianzhe Sun,

Guofeng Wang

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

Published: Jan. 26, 2025

Abstract Near‐infrared light response catalysts have received great attention in renewable solar energy conversion, production, and environmental purification. Here, near‐infrared photodegradation is successfully achieved rare earth single atom anchored NaYF 4 @g‐C 3 N heterojunctions by the synergistic effect of Z‐scheme heterojunction antenna atoms. The UV–vis emitted Tm 3+ can not only be directly absorbed g‐C to generate electron–hole pairs, realizing efficient transfer, but also substrate, generating photo‐generated electrons at its impurity level, transferring active charge valence band , forming a further improving photocatalytic efficiency. Importantly, atoms has multiple functions such as acting transfer channels facilitate regulating critical distance prolonging pair lifetime. Under NIR light, it exhibited remarkable performance degrading antibiotics (the removal rate TC reached 91% for 6 h) while maintaining excellent stability. LC‐MS/MS technology used reveal reaction intermediates, species, pathways, complex mechanism proposed. This study provides experimental theoretical support designing synthesizing with characteristics.

Language: Английский

Citations

0
Pd1Ni2 Trimer Sites Drive Efficient and Durable Hydrogen Oxidation in Alkaline Media DOI
Shuqi Wang, Ze‐Cheng Yao,

Zhuo‐Qi Shi

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: 147(6), P. 5398 - 5407

Published: Jan. 31, 2025

Anion-exchange membrane fuel cell (AEMFC) is a cost-effective hydrogen-to-electricity conversion technology under zero-emission scenario. However, the sluggish kinetics of anodic hydrogen oxidation reaction (HOR) impedes commercial implementation AEMFCs. Here, we develop Pd single-atom-embedded Ni3N catalyst (Pd1/Ni3N) with unconventional Pd1Ni2 trimer sites to drive efficient and durable HOR in alkaline media. Integrating theoretical experimental analyses, demonstrate that dual achieve "*H on Pd1Ni2-HV + *OH Pd1Ni2-HN" adsorption mode, effectively weakening overstrong *H adsorptions pristine Ni3N. Owing unique coordination mode atomically dispersed catalytic sites, resulting Pd1/Ni3N delivers high intrinsic mass activity together excellent antioxidation capability CO tolerance. Specifically, reaches 7.54 A mgPd-1 at overpotential 50 mV. The AEMFC employing as anode displays power density 31.7 W an ultralow precious metal loading only 0.023 mgPd cm-2. This study provides guidance for design high-performance atomic level.

Language: Английский

Citations

0
Constructing N- and F-Dual-Doped Pt-Based Heterojunction Catalysts via Synergistic Electronic Modulation for Enhanced Hydrogen Evolution Reaction Activity and CO Tolerance DOI

Yu Hao,

Dongfang Chen,

Dongyi Pu

et al.

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

The development of efficient and durable hydrogen evolution reaction (HER) electrocatalysts is critical for sustainable energy conversion. Although platinum (Pt) serves as a benchmark HER catalyst, its practical application hindered by the high cost, limited durability, susceptibility to CO poisoning. In this work, we report heterojunction Pt-based Pt@NCL-MXene, synthesized LiF etching MXene subsequent NH3 calcination. This process introduces dual nitrogen (N) fluorine (F) doping yields nitrogen-doped carbon layer (NCL) coating on Pt nanoparticles with an average size only 3.4 nm. Compared conventional Pt–C catalysts, Pt@NCL-MXene exhibits larger specific surface area, enhanced electron transfer efficiency, optimized d-band center, thereby facilitating both H* adsorption desorption. As result, achieves significantly lower overpotential 73 mV at current density 100 mA cm–2, alongside improved kinetics stability under operational conditions. Furthermore, 9 wt % F-rich support effectively suppresses Pt, reducing uptake 0.224 mmol g–1, which purportedly than that (0.264 g–1), mitigating poisoning prolonging catalyst's service life. These findings offer insights into rational design advanced CO-resistant electrocatalysts.

Language: Английский

Citations

0
MoN Supported Pt Nanocluster Catalysts with Regulated Interfacial Water Structures for Boosting Alkaline Hydrogen Oxidation Reaction DOI Open Access

Yiming Jin,

Zixuan Han, Wei Luo

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Abstract The development of nanocluster electrocatalysts is a promising way to simultaneously improve atomic utilization and catalytic reactivity noble metals. Although precisely controlled nanocatalysts with exact composition well‐defined structures have been widely investigated for various electrocatalytic reactions, the origin their excellent performance has mainly focused on thermodynamic energetics key intermediates. relationship between structure nanoclusters electric‐double‐layer (EDL) environment formed at interface electrode electrolyte largely overlooked. Herein, MoN‐supported Pt catalysts are synthesized remarkable intrinsic activity 1.927 mA cm −2 toward alkaline hydrogen oxidation reaction (HOR). Electrochemical experiments, in situ surface‐enhanced infrared absorption spectroscopy, theoretical calculations verify coordination environment, charge redistribution, band conducive providing optimized adsorption energy vital hydroxyl Furthermore, it found that adsorbed species can promote proportion water molecules gap region mitigate discontinuity hydrogen‐bond network EDL, thereby more transfer channels accelerate overall kinetics. This work uncovers optimization interfacial microenvironment induced by metal nanoclusters, shedding light rational design highly effective HOR catalysts.

Language: Английский

Citations

0
Atomically Dispersed Tungsten Enhances CO Tolerance in Electrocatalytic Hydrogen Oxidation by Regulating the 5d-Orbital Electrons of Platinum DOI Creative Commons
Xu Zhang, Peng Yu, Di Shen

et al.

Advanced Powder Materials, Journal Year: 2025, Volume and Issue: unknown, P. 100288 - 100288

Published: March 1, 2025

Language: Английский

Citations

0
Enhancing CO tolerance via molecular trapping effect: Single-atom Pt anchored on Mo2C for efficient alkaline hydrogen oxidation reaction DOI
Xiaokun Yang,

Wenjie Yu,

Yanfeng Zhang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137489 - 137489

Published: March 1, 2025

Language: Английский

Citations

0
Reactive species spillover effect for boosting electrocatalytic reaction DOI
Chang‐Hyeon Ji, Yun Jiang, Lei Guo

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162560 - 162560

Published: April 1, 2025

Language: Английский

Citations

0
Single-atom S-Dy-N charge-transfer bridge in Z-scheme SnS2/g-C3N4 heterojunctions for enhanced CO2 photoreduction DOI

Jianzhe Sun,

Yang Qu, Guofeng Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163147 - 163147

Published: April 1, 2025

Language: Английский

Citations

0