Spontaneous Atomic Ruthenium Doping in Mo2CTX MXene Defects Enhances Electrocatalytic Activity for the Nitrogen Reduction Reaction DOI
Wei Peng, Mingsheng Luo, Xiandong Xu

et al.

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(25)

Published: May 19, 2020

Abstract The electrochemical nitrogen reduction reaction (NRR) process usually suffers extremely low Faradaic efficiency and ammonia yields due to sluggish NN dissociation. Herein, single‐atomic ruthenium modified Mo 2 CT X MXene nanosheets as an efficient electrocatalyst for fixation at ambient conditions are reported. catalyst achieves a of 25.77% yield rate 40.57 µg h −1 mg ‐0.3 V versus the reversible hydrogen electrode in 0.5 m K SO 4 solution. Operando X‐ray absorption spectroscopy studies density functional theory calculations reveal that Ru anchored on act important electron back‐donation centers N activation, which can not only promote adsorption activation behavior catalyst, but also lower thermodynamic energy barrier first hydrogenation step. This work opens up promising avenue manipulate catalytic performance electrocatalysts utilizing atomic‐level engineering strategy.

Language: Английский

Recent Progress of Vacancy Engineering for Electrochemical Energy Conversion Related Applications DOI
Zexing Wu, Ying Zhao, Wei Jin

et al.

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 31(9)

Published: Dec. 6, 2020

Abstract Efficient electrocatalysts are key requirements for the development of ecofriendly electrochemical energy‐related technologies and devices. It is widely recognized that introduction vacancies becoming an important valid strategy to promote electrocatalytic performances designed nanomaterials. In this review, significance (i.e., cationic vacancies, anionic mixed vacancies) on improvement via three main functionalities, including tuning electronic structure, regulating active sites, improving electrical conductivity, systematically discussed. Recent achievements in vacancy engineering various hotspot processes comprehensively summarized, with focus oxygen reduction reaction (ORR), evolution (OER), hydrogen (HER), nitrogen (NRR), CO 2 (CO RR), their further applications overall water‐splitting zinc–air battery The recent other also summarized. Finally, challenges prospects regulate different reactions

Language: Английский

Citations

293
Accelerated Dinitrogen Electroreduction to Ammonia via Interfacial Polarization Triggered by Single-Atom Protrusions DOI Creative Commons
Jie Li, Chen Shang, Fengjiao Quan

et al.

Chem, Journal Year: 2020, Volume and Issue: 6(4), P. 885 - 901

Published: Feb. 13, 2020

Language: Английский

Citations

273
Recent progress in electrochemical synthesis of ammonia from nitrogen: strategies to improve the catalytic activity and selectivity DOI
Yang Bing, Wei‐Lu Ding,

Honghua Zhang

et al.

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 14(2), P. 672 - 687

Published: Dec. 9, 2020

A systematic summary of strategies to improve the performance electrochemical NRR catalysts and catalytic systems.

Language: Английский

Citations

273
Emerging Materials and Methods toward Ammonia‐Based Energy Storage and Conversion DOI
Fei Chang, Wenbo Gao, Jianping Guo

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(50)

Published: April 8, 2021

Abstract Efficient storage and conversion of renewable energies is critical importance to the sustainable growth human society. With its distinguishing features high hydrogen content, energy density, facile storage/transportation, zero‐carbon emission, ammonia has been recently considered as a promising carrier for long‐term large‐scale storage. Under this scenario, synthesis, storage, utilization are key components implementation ammonia‐mediated system. Being different from fossil fuels, normally have intermittent variable nature, thus pose demands on improvement existing technologies simultaneously development alternative methods materials synthesis The release in an efficient manner, other hand, vital achieve supply complete nitrogen circle. Herein, recent advances thermal‐, electro‐, plasma‐, photocatalytic or separation, thermal/electrochemical decomposition summarized with emphasis latest developments new (catalysts, electrodes, sorbents) these processes. challenges potential solutions discussed.

Language: Английский

Citations

273
Anion Vacancies Regulating Endows MoSSe with Fast and Stable Potassium Ion Storage DOI
Hanna He, Dan Huang,

Qingmeng Gan

et al.

ACS Nano, Journal Year: 2019, Volume and Issue: 13(10), P. 11843 - 11852

Published: Sept. 23, 2019

Vacancy engineering is a promising approach for optimizing the energy storage performance of transition metal dichalcogenides (TMDs) due to unique properties vacancies in manipulating electronic structure and active sites. Nevertheless, achieving effective introduction anion with adjustable vacancy concentration on large scale still big challenge. Herein, MoS

Language: Английский

Citations

268
Rare Earth Single-Atom Catalysts for Nitrogen and Carbon Dioxide Reduction DOI
Jieyuan Liu,

Xue Jun Kong,

Lirong Zheng

et al.

ACS Nano, Journal Year: 2020, Volume and Issue: 14(1), P. 1093 - 1101

Published: Jan. 14, 2020

Single-atom catalysts (SACs) have attracted much attention owning to their high catalytic properties. Herein, yttrium and scandium rare earth SACs are successfully synthesized on a carbon support (Y1/NC Sc1/NC). Different from the well-known M-N4 structure of M-N-C (M = Fe, Co) catalysts, Sc Y atoms with large atomic radius tend be anchored large-sized defects through six coordination bonds nitrogen carbon. Although Y- Sc-based nanomaterials generally inactive room-temperature electrochemical reactions, Y1/NC Sc1/NC exhibit activities reduction reaction dioxide due modulation local electronic Y/Sc single by N C coordination. The functions not only demonstrate magical effect but also promote application in reactions.

Language: Английский

Citations

259
Aqueous electrocatalytic N2 reduction for ambient NH3 synthesis: recent advances in catalyst development and performance improvement DOI
Xiaojuan Zhu, Shiyong Mou, Qiling Peng

et al.

Journal of Materials Chemistry A, Journal Year: 2019, Volume and Issue: 8(4), P. 1545 - 1556

Published: Dec. 16, 2019

In this review, we summarize recent advances in the design and development of electrocatalysts for N2 reduction reaction. We also discuss strategies to boost catalytic performances, methods reliable NRR experiments, perspectives further research directions.

Language: Английский

Citations

256
Multi-functional Mo-doping in MnO2 nanoflowers toward efficient and robust electrocatalytic nitrogen fixation DOI
Ke Chu, Yaping Liu, Yubiao Li

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2019, Volume and Issue: 264, P. 118525 - 118525

Published: Dec. 16, 2019

Language: Английский

Citations

254
Ag nanosheets for efficient electrocatalytic N2 fixation to NH3 under ambient conditions DOI

Hehan Huang,

Xia Li,

Xifeng Shi

et al.

Chemical Communications, Journal Year: 2018, Volume and Issue: 54(81), P. 11427 - 11430

Published: Jan. 1, 2018

An Ag nanosheet acts as a highly active electrocatalyst for N2-to-NH3 fixation. In 0.1 M HCl, this catalyst attains high Faradaic efficiency of 4.8% and NH3 yield rate 4.62 × 10−11 mol s−1 cm−2 at −0.60 V vs. RHE.

Language: Английский

Citations

247
Efficient Ammonia Electrosynthesis and Energy Conversion through a Zn‐Nitrate Battery by Iron Doping Engineered Nickel Phosphide Catalyst DOI
Rong Zhang, Ying Guo, Shaoce Zhang

et al.

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(13)

Published: Feb. 9, 2022

Abstract The electrocatalytic nitrate reduction reaction (NO 3 ‐RR) to ammonia (NH ) offers a promising alternative approach for NH production and nitrate‐based voltaic cells which can deliver both electricity as products, are also highly attractive. However, nitrate‐to‐NH conversion involves proton‐assisted multiple‐electron transfer process with considerable kinetic barrier, underlying the need efficient catalysts NO – RR. A Zn‐nitrate battery is reported enable “killing three birds one stone” strategy energy supply, removal of pollutants iron doped nickel phosphide (Fe/Ni 2 P) RR catalyst electrode. Iron doping induces downshift d‐band center Ni atoms Fermi level, allowing optimization Gibbs free energies intermediates. Fe/Ni P exhibits 94.3% Faradaic efficiency (FE) nearly 100% at –0.4 V vs. reversible hydrogen electrode (RHE). Further applying this electrocatalyst cathode material, novel power density 3.25 mW cm –2 FE 85.0% production. This work enriches application Zn‐based batteries in field electrocatalysis highlights promise bimetal

Language: Английский

Citations

247