First-principles calculations insight into non-noble-metal bifunctional electrocatalysts for zinc–air batteries

Applied Energy, Journal Year: 2025, Volume and Issue: 391, P. 125925 - 125925

Published: April 13, 2025

Language: Английский

---

Boosting Anionic-Cationic Redox Chemistry in Anion-Rich CuSe2 Cathode toward High-Energy Magnesium Batteries

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104304 - 104304

Published: May 1, 2025

Language: Английский

---

Charge regulation through rare earth metal oxides for single-atomic/cluster Co-based electrocatalysts towards boosting oxygen reduction reaction

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125493 - 125493

Published: May 1, 2025

Language: Английский

---

Fully Exposed Copper Single-Atom Sites on Mesoporous N/S-Codoped Graphene for Efficient Zinc-Air Battery

Published: Jan. 1, 2024

Transition metal single-atom catalysts are recently emerging as the most potential candidates for oxygen reduction reaction due to their remarkable activity and durability, yet subjected limited availability proportion of active sites reactant in practice lack favorable morphology. Herein, ultrathin mesoporous N/S-codoped graphene is fabricated by a potassium thiocyanate (KSCN) assisted pyrolysis metal-organic framework (ZIF-8) robust substrate anchoring copper sites. The KSCN-assisted can not only create N S coordination atoms but also regulate fully exposed g-Cu-SACs show excellent catalytic alkaline with half-wave 0.920 VRHE good cycling stability. Furthermore, zinc-air battery assembled exhibits high specific capacity lifetime. This work provides novel strategy construct highly energy-related applications.

Language: Английский

---

Waste tobacco-derived N, P dual-doped porous carbon loaded with heterostructured CoFe/CoFe2O4 nanoparticles for efficient oxygen electrocatalysis and Zn-air batteries

Materials Research Bulletin, Journal Year: 2024, Volume and Issue: 179, P. 112945 - 112945

Published: June 10, 2024

Language: Английский

---

Ultrafast Conversion of Water and Oxygen Molecules With Dissociation of Hydrogen Bonding Effect to Achieve Extra‐High Energy Efficiency of Secondary Metal‐Air Batteries

Small, Journal Year: 2024, Volume and Issue: 20(46)

Published: Aug. 8, 2024

Abstract Metal‐air secondary batteries with ultrahigh specific energies have received vast attention and are considered new promising energy storage. The slow redox reactions between oxygen‐water molecules lead to low efficiency (55–71%) limited applications. Herein, it is proposed that the MIL‐68(In)‐derived porous carbon nanotube supports CoNiFeP heteroconjugated alloy catalyst an overboiling point electrolyte achieve oxidation rate of water molecules. Structural characterization density functional theory calculations reveal greatly reduces free process, further accelerates dissociation O─H hydrogen bonds, release O 2 molecules, achieving extra‐low overpotential 110 mV@10 mA cm −2 far lower than commercial Ir/C catalysts 192 mV at 125 °C state‐of‐the‐art. Furthermore, assembled rechargeable zinc‐air begins break through 85 °C, jumps 100 reaches 88.1% ultralow decay 0.0068% after 150 cycles superior those reported metal‐air batteries. This work provides a joint‐design strategy reexamines battery operating temperature construct higher for fuel cells.

Language: Английский

---

Synergistic dual sites of Zn–Mg on hierarchical porous carbon as an advanced oxygen reduction electrocatalyst for Zn–air batteries

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(21), P. 8940 - 8947

Published: Jan. 1, 2024

Hierarchical porous carbon with dual sites of Zn–Mg exhibits excellent ORR activity and outstanding Zn–air battery performance.

Language: Английский

---

Structure adjustment on Fe-based electrocatalyst to regulate oxygen reduction reaction selectivity for Zn-air battery and H2O2 production

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 168, P. 112914 - 112914

Published: July 27, 2024

Language: Английский

---

Microenvironment Tailoring of NiCo Alloys Coupled with FePc as Efficient Bifunctional Catalysts for High-Rate Zn-Air Batteries

Langmuir, Journal Year: 2024, Volume and Issue: 40(32), P. 17038 - 17048

Published: Aug. 3, 2024

The practical application of Zn-air batteries require exploring cost-effective and durable bifunctional electrocatalysts. However, the simultaneous preparation catalysts with activities for oxygen reduction reaction (ORR) precipitation (OER) remains challenging. Herein, we synthesized a novel hybrid catalyst (FePc/NiCo/CNT), which couples NiCo alloy FePc through electrostatic interaction. interaction between can enhance intrinsic catalytic activity active site Fe-N

Language: Английский

---

Computational screening of transition metal atom doped ZnS and ZnSe nanostructures as promising bifunctional oxygen electrocatalysts

RSC Advances, Journal Year: 2024, Volume and Issue: 14(40), P. 28998 - 29005

Published: Jan. 1, 2024

The design of bifunctional oxygen electrocatalysts showing high catalytic performance for the evolution reaction (OER) and reduction (ORR) is great significance developing new renewable energy storage conversion technologies. Herein, based on first principles calculations, we systematically explored electrocatalytic activity a series transition metal atom (Fe, Co, Ni, Cu, Pd Pt)-doped ZnS ZnSe nanostructures OER ORR. calculated results revealed that Ni- Pt-doped exhibit promising both ORR in comparison to pristine nanostructures. Especially, OER/ORR overpotentials Ni-doped are estimated be 0.28/0.30 0.31/0.31 V, respectively, disclosing their potential as electrocatalysts. Moreover, it found top volcano plots, evincing performance. Our provide theoretical insights into feasible strategy synthesize highly efficient ZnS- ZnSe-based future.

Language: Английский

---