Crystalline/Amorphous Interface Engineering and d–sp Orbital Hybridization Synergistically Boosting the Electrocatalytic Performance of PdCu Bimetallene toward Formic Acid-Assisted Overall Water Splitting DOI

Shuai Zeng,

Dianyi Qu,

Hong Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(47), P. 64797 - 64806

Published: Nov. 15, 2024

Advanced electrocatalysts capable of bifunctional catalysis for formic acid oxidation (FAOR) and hydrogen evolution reaction (HER) have garnered significant attention due to their exceptional energy efficiency. In this research, we meticulously designed a PdCu bimetallene characterized by numerous crystalline/amorphous (c/a) interfaces robust d–sp orbital hybridization, achieved integrating the p-block metalloid boron within matrix (B-PdCu-c/a). The B-PdCu-c/a revealed multitude surface atoms unsaturated defect sites, offering abundant catalytic active sites an optimized electronic structure. B2-PdCu-c/a exhibited best performance in FAOR HER, achieving mass activity 1106 mA mgcat–1 overpotential 52 mV, respectively. Significantly, two-electrode configuration B2-PdCu-c/a∥B2-PdCu-c/a attained low cell voltage 0.19 V at 10 cm–2 during acid-assisted overall water splitting. Density functional theory (DFT) calculations indicated that c/a interface engineering hybridization synergistically pristine bimetallene. This led elevation d-band center accumulation charge interface, which enhanced adsorption intermediates, facilitated C–H bond cleavage, balanced adsorption–desorption hydrogen, thereby improving electrocatalytic activities study not only presents viable strategy effectively tuning but also offers valuable insights into development electrocatalysts.

Language: Английский

Cobalt-Doped MnFe2O4 Spinel Coupled with Nitrogen-Doped Reduced Graphene Oxide: Enhanced Oxygen Electrocatalytic Activity for Zinc-Air Batteries DOI

Wolong Li,

Yong Wang, Yongcun Li

et al.

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

Published: March 2, 2025

MFCO spinel anchored on N-rGO is synthesized by a two-step hydrothermal method as bifunctional electrocatalyst. Its physicochemical properties have been characterized and tested, it applied to zinc-air batteries. The experimental theoretical calculations show that the uniformly distributed surface of N-rGO. When conducting N-rGO, synergistic effect occurs between Co-N bonds, which changes arrangement C-N bonds from sp2 orientation sp3 form. ORR catalytic pathway MFCO/N-rGO electrocatalyst dominated 4-electron transfer, with half-wave potential 0.8003 V, an overpotential value 352 mV, small difference (ΔE = 0.78 V). With charge/discharge voltage about 0.88 gap remains almost unchanged for long period after 650 h, showing excellent stability. improved performance attributed Co acting active site, doping induces Jahn-Teller effect, alters electronic structure spinel, shifts d-band center upward, enhances adsorption oxygen intermediates, promotes electrocatalytic reaction. This study provides low-cost promising

Language: Английский

Citations

1
Cyano-Bridged Bimetallic Polymer Network-Derived Pd3Fe Intermetallic for Aqueous Rechargeable Zinc-Air Batteries DOI

Santanu Ghora,

Biswarup Satpati, Bikash Kumar Jena

et al.

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

Published: Jan. 2, 2025

The rational design and synthesis of bifunctionally active durable oxygen electrocatalysts have garnered significant attention for electrochemical energy conversion storage. Intermetallic nanostructures are particularly promising these applications due to their unique catalytic properties exceptional durability. In this study, we present a fascinating synthetic approach the direct bifunctional electrocatalyst based on nitrogen-doped carbon-encapsulated ordered Pd

Language: Английский

Citations

0
Amorphous-Crystalline Heterostructure in Electrocatalytic 2D Platinum Group Metals DOI
Soumen Dutta

Current Opinion in Electrochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 101653 - 101653

Published: Jan. 1, 2025

Language: Английский

Citations

0
Amorphous/Crystalline Heterostructured Nanomaterials: An Emerging Platform for Electrochemical Energy Storage DOI Creative Commons
Yan Zhou, Ying Liang, Zhen Wu

et al.

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

Published: Feb. 28, 2025

Abstract With the expanding adoption of large‐scale energy storage systems and electrical devices, batteries supercapacitors are encountering growing demands challenges related to their capability. Amorphous/crystalline heterostructured nanomaterials (AC‐HNMs) have emerged as promising electrode materials address these needs. AC‐HNMs leverage synergistic interactions between amorphous crystalline phases, along with abundant interface effects, which enhance capacity output accelerate mass charge transfer dynamics in electrochemical (EES) devices. Motivated by elements, this review provides a comprehensive overview synthesis strategies advanced EES applications explored current research on AC‐HNMs. It begins summary various Diverse devices AC‐HNMs, such metal‐ion batteries, metal–air lithium–sulfur supercapacitors, thoroughly elucidated, particular focus underlying structure–activity relationship among amorphous/crystalline heterostructure, performance, mechanism. Finally, perspectives for proposed offer insights that may guide continued development optimization.

Language: Английский

Citations

0
Crystalline/Amorphous Interface Engineering and d–sp Orbital Hybridization Synergistically Boosting the Electrocatalytic Performance of PdCu Bimetallene toward Formic Acid-Assisted Overall Water Splitting DOI

Shuai Zeng,

Dianyi Qu,

Hong Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(47), P. 64797 - 64806

Published: Nov. 15, 2024

Advanced electrocatalysts capable of bifunctional catalysis for formic acid oxidation (FAOR) and hydrogen evolution reaction (HER) have garnered significant attention due to their exceptional energy efficiency. In this research, we meticulously designed a PdCu bimetallene characterized by numerous crystalline/amorphous (c/a) interfaces robust d–sp orbital hybridization, achieved integrating the p-block metalloid boron within matrix (B-PdCu-c/a). The B-PdCu-c/a revealed multitude surface atoms unsaturated defect sites, offering abundant catalytic active sites an optimized electronic structure. B2-PdCu-c/a exhibited best performance in FAOR HER, achieving mass activity 1106 mA mgcat–1 overpotential 52 mV, respectively. Significantly, two-electrode configuration B2-PdCu-c/a∥B2-PdCu-c/a attained low cell voltage 0.19 V at 10 cm–2 during acid-assisted overall water splitting. Density functional theory (DFT) calculations indicated that c/a interface engineering hybridization synergistically pristine bimetallene. This led elevation d-band center accumulation charge interface, which enhanced adsorption intermediates, facilitated C–H bond cleavage, balanced adsorption–desorption hydrogen, thereby improving electrocatalytic activities study not only presents viable strategy effectively tuning but also offers valuable insights into development electrocatalysts.

Language: Английский

Citations

1