FeNi‐LDH COATED WITH ORANGE‐PEEL CARBON AEROGEL FOR OXYGEN EVOLUTION REACTION DOI

Hai Lang Jia,

Peng-Cheng Ji,

Yang Teng

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: July 26, 2024

In this work, the waste orange-peel was used as carbon source, and derived material can be obtained through simple pyrolysis. Then, we designed structure of aerogel grown on iron-nickel layered double hydroxides in situ to achieve effect coating (FeNi-LDH/CA). The oxygen evolution reaction catalytic performance FeNi-LDH/CA is excellent, far exceeding that commercial RuO2. 1 M KOH, overpotential only 250 mV (10 mA cm-2), obviously better than RuO2 (295 mV). shows good cycling stability, after long-term i-t testing, decays by 3% running at 100 cm-2 for h. When an anode, voltage water-splitting 1.48 V 10 cm-2. rechargeable liquid zinc-air battery based Pt/C-FeNi-LDH/CA catalyst has higher open-circuit (1.543 V) galvanostatic discharge capacity 1.23 (830 min, cm-2). Moreover, a small charge-discharge gap (0.65 cm-2, 200 consecutive cycles (66 h), increased about 30 mV, indicating stability.

Language: Английский

Interface Engineering of Crystalline Cu-Amorphous Pt Heterophase for Enhanced Zno Hydrogen Sensitivity Performance DOI
Na Luo, Jiayuan Wang, Jia Ren

et al.

Published: Jan. 1, 2025

The construction of crystalline-amorphous heterogeneous phase interfaces is an effective strategy to enhance their surface active sites. We successfully synthesised amorphous Pt-crystalline Cu (aPtcCu) nanospheres for ultrasensitive H2 detection. Cu2+ first reduced in the oleylamine−ascorbic acid (OAm-AA) solvent system due inhibition Pt reduction. Next Pt2+ by electrocoupling substitution already and amorphisation achieved strong OAm adsorption. gas sensing test results show that aPtcCu/ZnO sensor has higher response lower working temperature (160 oC) than Pt/ZnO (180 ZnO (240 oC). Moreover, can detect as low 2 ppm response/recovery time only s/6 s. significantly sensitization characteristic aPtcCu be attributed following: 1) more site on Pt; 2) crystalline/amorphous heterophase interface separates electrons holes, which further catalytic activity aPtcCu; 3) Pt4+ ↔ accelerates reaction surface. prepared expected a candidate monitoring hydrogen leakage, provides new direction application amorphous/crystalline sensitizers sensors.

Language: Английский

Citations

0
Intrinsic activation regulation of ZIF-67 derived Co3O4/NF with multi-level multidimensional nanostructure for oxygen evolution reaction DOI
Li Fu,

Rongzi Xv,

Myung Chang Kang

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 637, P. 236509 - 236509

Published: Feb. 24, 2025

Language: Английский

Citations

0
FeNi‐LDH COATED WITH ORANGE‐PEEL CARBON AEROGEL FOR OXYGEN EVOLUTION REACTION DOI

Hai Lang Jia,

Peng-Cheng Ji,

Yang Teng

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: July 26, 2024

In this work, the waste orange-peel was used as carbon source, and derived material can be obtained through simple pyrolysis. Then, we designed structure of aerogel grown on iron-nickel layered double hydroxides in situ to achieve effect coating (FeNi-LDH/CA). The oxygen evolution reaction catalytic performance FeNi-LDH/CA is excellent, far exceeding that commercial RuO2. 1 M KOH, overpotential only 250 mV (10 mA cm-2), obviously better than RuO2 (295 mV). shows good cycling stability, after long-term i-t testing, decays by 3% running at 100 cm-2 for h. When an anode, voltage water-splitting 1.48 V 10 cm-2. rechargeable liquid zinc-air battery based Pt/C-FeNi-LDH/CA catalyst has higher open-circuit (1.543 V) galvanostatic discharge capacity 1.23 (830 min, cm-2). Moreover, a small charge-discharge gap (0.65 cm-2, 200 consecutive cycles (66 h), increased about 30 mV, indicating stability.

Language: Английский

Citations

1