Controlled Aggregation of Cobalt and Platinum Atoms via Plasma Treatment for Exceptional Hydrogen Evolution Reaction Activity DOI Open Access
Guoqing Zhang, Jiankun Li, Yixing Wang

et al.

Coatings, Journal Year: 2024, Volume and Issue: 14(12), P. 1569 - 1569

Published: Dec. 15, 2024

Designing and developing highly active, stable, cost-effective hydrogen evolution reaction (HER) catalysts is crucial in the field of water electrolysis. In this study, we utilize N-doped porous carbon (CoNC) derived from zeolite imidazole metal–organic frameworks (ZIF-67) as support prepare CoNC-Pt-IM-P via chemical impregnation (CoNC-Pt-IM) plasma treatment. Systematic analyses reveal that calcined CoNC with pyridinic nitrogen could serve a robust to strongly anchor PtCo nanoclusters, while argon treatment lead noticeable aggregation Co Pt atoms so alter electronic environment enhance intrinsic HER catalytic activity. exhibit outstanding activity toward HER, achieving an exceptionally low overpotential 31 mV at current density −10 mA cm−2 Tafel slope 36 dec−1. At 50 mV, its mass reaches 4.90 A mgPt−1, representing enhancements 1.5 times compared CoNC-Pt-IM 12.3 commercial 20 wt% Pt/C. Furthermore, it operate stably for over 110 h cm−2, demonstrating exceptional durability. This work uses achieve controllable their activity, which has advantage avoiding excessive particle commonly used method high-temperature calcination.

Language: Английский

Electronic Structure Regulation of MnCo2O4 via Surface‐Phosphorization Coupling to Monolithic Carbon for Oxygen Electrocatalysis in Zn–Air Batteries DOI
Yanyan Liu, Shuling Liu, Pengxiang Zhang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

Abstract An urgent challenge to the development of rechargeable Zn–air batteries (RZABs) is highly active, durable, and low‐cost catalysts for oxygen reduction reaction evolution (ORR OER). Herein, a carbon‐based monolithic catalyst designed via anchoring P‐modified MnCo 2 O 4 inverse spinel nanoparticles on biomass‐derived carbon (P‐MnCo @PWC). The introduction surface P atoms regulates electronic structures valences metal by adjusting coordination fields (P‐O) δ– Metal‐P. optimization adsorption behavior key intermediates facilitates activation conversion species. structure beneficial construction three‐phase interface efficient mass transfer high electrical conductivity. P‐MnCo @PWC displays outstanding bifunctional catalytic properties with thin Δ E (the difference between OER potential at 10 mA cm – ORR halfwave potential) 0.66 V. RZAB as cathode delivers an exceptional peak power density (160 mW ) remarkable cycle life (over 1200 cycles), overcoming those noble counterparts. This research provides promising general surface‐phosphorization way design electrocatalysts high‐value utilization biomass.

Language: Английский

Citations

18
Efficient trifunctional electrocatalysts with iron single atoms electronically coupled with adjacent ruthenium nanoclusters for zinc-air battery-powered water splitting DOI
Xinjie Zhang, Yang Liu, Hongjie Dai

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: 368, P. 125127 - 125127

Published: Feb. 4, 2025

Language: Английский

Citations

2
Biphase Alloy Nanoheterojunction Encapsulated within N‐Doped Carbon Nanotubes as Bifunctional Oxygen Electrocatalyst for High‐Performance Zn‐Air and Mg‐Air Batteries DOI Open Access
Min Wang, Jing Xie,

Zhenjiang Lu

et al.

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

Published: Jan. 10, 2025

Abstract N‐doped carbon confined alloy catalysts possess considerable potential in facilitating oxygen electrocatalytic reaction and consequent applications metal air batteries, but the sluggish catalytic kinetics high barrier of reduction (ORR) remain bottleneck restricting its further development. Here, a novel CoFe‐NiFe biphase nanoheterojunction encapsulated within nanotubes (CoFe‐NiFe@NCNT) is fabricated via hydrothermal carbothermic approach. Owing to plentiful active sites electrical conductance, difference between OER ORR amounts merely 0.68 V. Simultaneously, performance Zn‐air Mg‐air batteries assembled by CoFe‐NiFe@NCNT serving as air‐cathode are superior that commercial Pt/C + RuO 2 . The DFT outcomes reveal transformation *OOH *O rate‐determining step (RDS) ORR/OER. Also, synergy heterojunction conducive reduce energy barrier. This study offers profound understanding toward structural design electrocatalysts utilization metal‐air for portable wearable electronic apparatuses.

Language: Английский

Citations

1
Rational design of hollow cubic MnCoFe PBA-P for electrocatalytic oxygen evolution reaction DOI

Tao Pan,

Songtao Zhang, Ying Wei

et al.

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 44, P. 102530 - 102530

Published: Jan. 18, 2025

Language: Английский

Citations

0
Porous carbon nanosheets integrated with graphene-wrapped CoO and CoNx as efficient bifunctional oxygen electrocatalysts for rechargeable zinc-air batteries DOI
Chang Ma,

Binji Zhu,

Yue Wang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 793 - 803

Published: Jan. 21, 2025

Language: Английский

Citations

0
Prokaryote‐Inspired and Derived Oxygen Reduction Electrocatalysts for Ultra‐Long‐Life Zn–Air Batteries DOI Open Access
Wenbo Zhao, Jipeng Chen, Ximeng Liu

et al.

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

Published: Feb. 10, 2025

Abstract The design of efficient oxygen reductionreaction (ORR) catalyst with fast kinetics is crucial for high‐performance Zn–air batteries but remains a challenge. Herein, inspired by the oxidative respiratory chain prokaryotes, an ORR electrocatalyst reported mimicking microstructure Staphylococcus aureus and simitaneously utilizing this low‐cost cell as precursor. consists MnO 2 /Co P nanocomposites support on aureus‐derived hollow spherical carbon, which not only accelerates electron transfer improved intrinsic reaction kinetics, also creates OH − concentration gradient enhanced mass efficiency. Such bio‐inspired derived enables rechargeable ultra‐long cycling stability more than 2800 h at high capacity 810.3 mAh g −1 , superior among bio‐derived catalysts. A flexible battery based assembled, it well integrates wireless electronic skin.

Language: Английский

Citations

0
Cobalt phosphide@S-doped carbon nanobelt arrays derived from metal-organic framework as an efficient bifunctional electrocatalyst for water splitting DOI
Guifu Zuo, Hong Wang, Hong Yan

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137357 - 137357

Published: March 1, 2025

Language: Английский

Citations

0
V-doped Co2P Anchored on the N–P-Doped Three-Dimensional Covalently Cross-Linked Graphene As a Hydrogen Evolution Reaction Catalyst for Alkaline Water/Seawater Splitting DOI
Shaopei Jia, Yanfeng Gao, Xiaofei Ma

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Designing and synthesizing highly efficient stable electrocatalysts of seawater electrolysis for the hydrogen evolution reaction is important realizing green production. Herein, a heterostructured V-doped Co2P anchored on N-P-doped three-dimensional covalently cross-linked graphene (V-Co2P@NPPC/3DG) was synthesized with help ZIF-67 as an intermediate controlled phosphidation process. The as-prepared V-Co2P@NPPC/3DG-1:5 had low overpotentials 98.3 88.3 mV (at 10 mA cm-2) in alkaline water artificial seawater, respectively, corresponding Tafel slopes were 56.4 51.0 dec-1. electrolyzer flowing assembled from commercial RuO2 catalyst exhibited cell voltage 1.54 V at cm-2, which close to that Pt/C||RuO2 (1.52 V). Notably, V-Co2P@NPPC/3DG-1:5||RuO2 lower than high current density (>58 cm-2), superior stability. doping effectively enhanced intrinsic activity Co2P, complexation NPPC/3DG achieved full exposure active sites while enhancing charge transfer rate during HER. This work will attract attention role metal compound-carbon support interactions activity, conductivity, stability electrocatalysts.

Language: Английский

Citations

0
Fe-Nx sites coupled with Co2P nanoparticles to boost the ORR/OER bifunctional catalytic performance DOI

Wenru Liang,

Junwei Shi, Zhenhua Qin

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180455 - 180455

Published: April 1, 2025

Language: Английский

Citations

0
A facile approach for synthesizing nitrogen-doped carbon supported circular trough-shaped FeCo alloy for the oxygen reduction reaction DOI
Kun Yang, Jing Liu, Bin Li

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A nitrogen-doped carbon-supported circular trough-shaped FeCo alloy-based electrocatalyst (FeCo/NC) was synthesized by a simple-to-accomplish method. The unique alloy structure and rich Fe/Co-Nx-based active sites constructed during the pyrolysis process endowed FeCo/NC with comparable electrocatalytic ORR activity in both three-electrode system Zn-air batteries to that of previously reported catalysts.

Language: Английский

Citations

0