Recent advances in rare-earth-based materials for electrocatalysis

Chem Catalysis, Год журнала: 2022, Номер 2(5), С. 967 - 1008

Опубликована: Март 3, 2022

Язык: Английский

---

Terbium-induced cobalt valence-band narrowing boosts electrocatalytic oxygen reduction

Energy & Environmental Science, Год журнала: 2023, Номер 16(11), С. 5500 - 5512

Опубликована: Янв. 1, 2023

Tb 2 O 3 endows Co 3d with a narrow band and appropriate location via 3d–O 2p–Tb 4f gradient orbital coupling to efficiently enhance the oxygen reduction reaction.

Язык: Английский

---

Perspectives of High‐Performance Li–S Battery Electrolytes

Advanced Functional Materials, Год журнала: 2023, Номер 34(4)

Опубликована: Окт. 22, 2023

Abstract Lithium–sulfur batteries with high energy density are considered to be one of the most promising candidates for next‐generation storage devices. Electrolyte as medium Li + transportation between electrodes, also plays a crucial role in inhibiting dissolution and diffusion lithium polysulfides Li–S batteries. The working mechanism different electrolytes is classified into “solid‐liquid‐solid” “solid‐solid” conversions. Under conversion, would inevitably face challenges such “shuttle effect” that lead poor cycle performance, under they interface mismatch limits utilization sulfur low density, while both conversion mechanisms cause uncontrollable dendrites on anode. According mechanism, can divided ether‐based, ionic liquid‐based, gel polymer electrolytes, polymer‐based solid‐state well carbonate‐based oxide/sulfide‐based conversion. Based active materials current status strategies from multiple perspectives summarized improve electrochemical hope provide comprehensive guideline toward development suitable

Язык: Английский

---

Renovating phase constitution and construction of Pt nanocubes for electrocatalysis of methanol oxidation via a solvothermal-induced strong metal-support interaction

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 325, С. 122383 - 122383

Опубликована: Янв. 5, 2023

Язык: Английский

---

A sol–gel derived LaCoO₃ perovskite as an electrocatalyst for Al–air batteries

Dalton Transactions, Год журнала: 2024, Номер 53(8), С. 3713 - 3721

Опубликована: Янв. 1, 2024

In this work, we report the performance of LaCoO 3 perovskite oxide as a cathode catalyst for an Al–air battery.

Язык: Английский

---

Surface‐Enriched Single‐Bi‐Atoms Tailoring of Pt Nanorings for Direct Methanol Fuel Cells with Ultralow‐Pt‐Loading

Advanced Materials, Год журнала: 2024, Номер 36(21)

Опубликована: Фев. 14, 2024

Abstract Single‐atom decorating of Pt emerges as a highly effective strategy to boost catalytic properties, which can trigger the most active sites while blocking smallest number atoms. However, rational design and creation high‐density single‐atoms on surface remain huge challenge. Herein, customized synthesis surface‐enriched single‐Bi‐atoms tailored nanorings ( SE‐Bi 1 /Pt NRs ) toward methanol oxidation is reported, guided by density functional theory (DFT) calculations suggesting that relatively higher Bi species ensure CO‐free pathway accelerate kinetics *HCOOH formation. Decorating with dense achieved starting from PtBi intermetallic nanoplates (NPs) intrinsically isolated atoms subsequent etching annealing treatments. The exhibit mass activity 23.77 A mg −1 in alkaline electrolyte, 2.2 12.8 times than those Pt‐Bi Pt/C, respectively. This excellent endows high likelihood be used practical anodic electrocatalyst for direct fuel cells （DMFCs） power 85.3 mW cm −2 ultralow loading 0.39 .

Язык: Английский

---

Highly selective photocatalytic reduction of CO2 to ethane over Au-O-Ce sites at micro-interface

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 321, С. 122020 - 122020

Опубликована: Окт. 4, 2022

Язык: Английский

---

Anti‐CO Poisoning FePtRh Nanoflowers with Rh‐Rich Core and Fe‐Rich Shell Boost Methanol Oxidation Electrocatalysis

Advanced Functional Materials, Год журнала: 2022, Номер 33(7)

Опубликована: Дек. 8, 2022

Abstract Introducing oxophilic metals into Pt‐based alloy catalysts can effectively alleviate the poisoning by CO intermediates (CO*) during methanol oxidation reactions (MOR). However, excessive on surface of tend to form thermodynamically stable carbonyl compound‐like structures, occupying electrocatalytically active sites, which is not conducive enhancement catalytic activity. Herein, a kind segregated FePtRh nanoflowers for eliminating CO* MOR electrocatalysis presented. The are constituted Rh‐rich core and Fe‐rich shell. optimized Fe 21 Pt 66 Rh 13 /C shows high mass activity 3.90 A mg −1 specific 4.85 mA cm −2 . It confirmed that electron transfer from or atoms beneficial higher anti‐CO ability, mainly originate alloying surface‐segregated structures. Density functional theory calculations reveal decreased electrons adsorbed both Pt–Pt bridge sites top weakens strong adsorption energy between intermediates. optimal also show excellent performance toward ethanol reaction (EOR) with 2.76 enhanced as well improved stability.

Язык: Английский

---

Activating C–H Bonds by Tuning Fe Sites and an Interfacial Effect for Enhanced Methanol Oxidation

Advanced Materials, Год журнала: 2022, Номер 34(50)

Опубликована: Окт. 11, 2022

The interaction mechanism between the reacting species and active site of α-Fe2 O3 -based photoanodes in photoelectrochemical methanol conversion reaction is still ambiguous. Herein, a simple two-step strategy demonstrated to fabricate porous /CoFe2 O4 heterojunction for reaction. influence electronic structure interfacial effect on are investigated by constructing two different FeO6 octahedral configurations heterogeneous structures. optimal sample ZnFeCo-2 affords high photocurrent density 1.17 mA cm-2 at 0.5 V vs Ag/AgCl, which 3.2 times than that ZnFe (0.37 ). Meanwhile, also exhibits 97.8% Faraday efficiency CH3 OH HCHO, long-term stability over 40 h. Furthermore, functional theory calculations reveal heterostructured with favorable electron transfer effectively lowers adsorption, C-H bond activation, HCHO desorption energy relative pristine , resulting excellent efficiency.

Язык: Английский

---

Identifying the Role of Hydroxyl Binding Energy in a Non‐Monotonous Behavior of Pd‐Pd₄S for Hydrogen Oxidation Reaction

Advanced Functional Materials, Год журнала: 2022, Номер 32(27)

Опубликована: Март 31, 2022

Abstract The kinetics of hydrogen oxidation reaction (HOR) under alkaline electrolyte, even for Pt, is orders magnitude slower than that in acid; however, the origin dominates pH dependent HOR has not been unequivocally identified. Herein, Pd‐Pd 4 S/C heterostructure synthesized, and its performance whole region investigated. Unexpectedly, a non‐monotonous variation between current densities observed, whereas an inflection point occurring at around 7 obtained. Moreover, counterparts with almost identical binding energies show activity trends accordance their hydroxyl (OHBEs), highlighting critical role OHBE enhancing performance. combination experimental results density functional theory calculations reveal electron transfer interface promotes thereby accelerates HOR.

Язык: Английский

---