Bimetallic NiCo Metal–Organic Frameworks with High Stability and Performance Toward Electrocatalytic Oxidation of Urea in Seawater

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(34), P. 15813 - 15820

Published: Aug. 14, 2024

The urea oxidation reaction (UOR) is an alternative anodic for hydrogen generation via water splitting. significance of UOR lies in both H2 production and the decontamination urea-containing wastewater. Commercial electrocatalysts this field are generally based on noble metals show several limitations. Bimetal–organic frameworks (BMOFs) can be excellent candidates replacement noble-metal-based catalysts beacuse their promising features, such as a tunable structure, high surface area, abundant sites electrocatalysis. In study, series nickel–cobalt BMOFs (Nix-Coy-BMOFs: x y refer to molar fraction Ni Co) were synthesized applied UOR. particular, Ni0.15Co0.85-MOF material with structure similar that its parent Co-MOF, revealed exceptional electrocatalytic performance, evidenced by low values overpotential (1.33 V vs RHE at 10 mA cm–2), TOF (0.47 s–1), Tafel slope (125 mV dec–1). At 40 cm–2 current density, also showed stability during 72 h tests. This performance NiCo-BMOF assigned synergistic effect between Co Ni, active sites, porosity, all which result increased rate due acceleration charge mass transfers. Thus, present work introduces efficient noble-metal-free energy from urea-based

Language: Английский

---

MOF‐derived Carbon‐Based Materials for Energy‐Related Applications

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

Published: Jan. 10, 2025

Abstract New carbon‐based materials (CMs) are recommended as attractively active due to their diverse nanostructures and unique electron transport pathways, demonstrating great potential for highly efficient energy storage applications, electrocatalysis, beyond. Among these newly reported CMs, metal–organic framework (MOF)‐derived CMs have achieved impressive development momentum based on high specific surface areas, tunable porosity, flexible structural‐functional integration. However, obstacles regarding the integrity of porous structures, complexity preparation processes, precise control components hinder regulation interface engineering in CMs. In this context, review systematically summarizes latest advances tailored types, processing strategies, energy‐related applications MOF‐derived focuses structure‐activity relationship metal‐free carbon, metal‐doped metallide‐doped carbon. Particularly, intrinsic correlation evolutionary behavior between synergistic interaction micro/nanostructures species with electrochemical performances emphasized. Finally, insights perspectives relevant research presented, future prospects challenges discussed, providing valuable guidance boost high‐performance electrodes a broader range application fields.

Language: Английский

---

MOF‐Derived Transition Metal Phosphides for Supercapacitors

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

Published: Feb. 25, 2025

Abstract Transition metal phosphides (TMPs) in supercapacitors (SCs) applications are increasingly attracting attention because of their exceptional electrochemical performance. MOF‐derived TMPs, possess high specific surface areas, rich pore structure, and controllable chemical compositions, offering promising opportunities for supercapacitor applications. There is a wide variety they exhibit different properties SCs. This work mainly categorizes TMPs (Fe x P, Co Ni y Cu P), then outlines the latest research advancements regarding use as electrode materials SCs, including results synthesis methods structural modulation. Subsequently, SCs discussed. At end, perspectives future developments key challenges highlighted, with aim providing guidance research.

Language: Английский

---

A Review of the Application of Metal-Based Heterostructures in Lithium–Sulfur Batteries

Catalysts, Journal Year: 2025, Volume and Issue: 15(2), P. 106 - 106

Published: Jan. 22, 2025

Lithium–sulfur (Li-S) batteries are recognized as a promising alternative in the energy storage domain due to their high theoretical density, environmental friendliness, and cost-effectiveness. However, challenges such polysulfide dissolution, low conductivity of sulfur, limited cycling stability hinder widespread application. To address these issues, incorporation heterostructured metallic substrates into Li-S has emerged pivotal strategy, enhancing electrochemical performance by facilitating better adsorption catalysis. This review delineates modifications made cathode separator through heterostructures. We categorize heterostructures three classifications: single metals metal compounds, MXene materials paired with formed entirely compounds. Each category is systematically examined for its contributions behavior efficiency batteries. The evaluated both contexts, revealing significant improvements lithium-ion retention. Our findings suggest that strategic design can not only mitigate inherent limitations but also pave way development high-performance systems.

Language: Английский

---

MOF-derived rose-like carbon-coated Ni-Co phosphide with phosphorus vacancies to enhance hydroxide-ion storage in hybrid supercapacitors

Energy Materials, Journal Year: 2025, Volume and Issue: 5(5)

Published: Feb. 21, 2025

The low structural stability and sluggish charge-transfer kinetics of transition metal phosphides (TMPs) hinder their application in hybrid supercapacitors. realization advanced OH- storage critically depends on the delicate TMP designs, particularly chemical composition structure. Herein, a synergistic engineering approach based metal-organic framework (MOF)-derived C-coated bimetallic P vacancies (Pv) was proposed. Using Ni-Co-based MOF, one-step high-temperature carbonization phosphidation method employed as precursor to prepare rose-like Ni1-xCoxP composite (Ni1-xCoₓP@NC), comprising N-doped carbon (NC) coating Pv. Physical characterization theoretical calculations indicated that open structure with porous Ni1-xCoxP@NC nanosheets originating from pyrolysis MOF provides abundant redox-active sites, NC layer offers excellent mechanical support for persistent electron/OH- transfer. phosphides, surface Pv, synergistically enhance electrical conductivity TMPs, reduce energy barriers adsorption, accelerate kinetics. prepared @NC electrode possessing an architecture exhibits high specific capacitance (2,108 F g-1 at 1 A g-1) rate capability (1,710 10 g-1). Furthermore, assembled active carbon//Ni1-xCoxP P@NC supercapacitor demonstrates density 37.7 Wh kg-1 power 750 W kg-1. Our study presents promising strategy modifying electrodes realize efficient stable

Language: Английский

---

Theory-guided optimization of central metal for efficient MOFs bidirectional catalysis in lithium-sulfur batteries

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 689, P. 137219 - 137219

Published: March 3, 2025

Language: Английский

---

P doping adjusts the coordination structure of single atoms to accelerate the catalytic bidirectional redox reaction in Li–S batteries

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Language: Английский

---

Bimetallic selenides heterostructure embedded in urchin-like core/shell conductive rhombic dodecahedron as sulfur host for high-energy-density lithium-sulfur battery

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137779 - 137779

Published: May 1, 2025

Language: Английский

---