Atomically Dispersed Metal‐Based Catalysts for Zn–CO₂Batteries

Small Structures, Journal Year: 2022, Volume and Issue: 3(12)

Published: Aug. 19, 2022

Rechargeable aqueous Zn–CO 2 batteries show great promise in meeting severe environmental problems and energy crises due to their combination of CO utilization output, as well advantages high theoretical density, abundant raw materials, safety. Developing high‐efficiency stable reduction reaction (CO RR) electrocatalysts is critical importance for the promotion this technology. Atomically dispersed metal‐based catalysts (ADMCs), with extremely atom‐utilization efficiency, tunable coordination environments, superior intrinsic catalytic activity, are emerging promising candidates batteries. Herein, some recent developments atomically summarized, including transition metal non‐transition sites. Moreover, various synthetic strategies, characterization methods, relationship between active site structures RR activity/Zn–CO battery performance introduced. Finally, challenges perspectives also proposed future development ADMCs

Language: Английский

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NiFe layered double hydroxide nanosheet array for high-efficiency electrocatalytic reduction of nitric oxide to ammonia

Chemical Communications, Journal Year: 2022, Volume and Issue: 58(58), P. 8097 - 8100

Published: Jan. 1, 2022

Here, we demonstrate that under ambient conditions, a nickel-iron layered double hydroxide nanosheet array can exhibit promising NORR performance, delivering maximal faradaic efficiency of 82% and corresponding yield rate 112 μmol h-1 cm-2, along with high stability for over 30 h. This superior performance is further confirmed as proof-of-concept Zn-NO battery, in which peak power density 1.8 mW cm-2 large NH3 32 are observed. Theoretical analyses indicate NiFe-LDH exhibits effective NO activation capacity slow hydrogen evolution kinetics.

Language: Английский

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Active-site and interface engineering of cathode materials for aqueous Zn—gas batteries

Nano Research, Journal Year: 2022, Volume and Issue: 16(2), P. 2325 - 2346

Published: Sept. 27, 2022

Language: Английский

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Volcano-type relationship between oxidation states and catalytic activity of single-atom catalysts towards hydrogen evolution

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Oct. 4, 2022

To date, the effect of oxidation state on activity remains controversial in whether higher or lower states benefit enhancement catalytic activity. Herein, we discover a volcanic relationship between and hydrogen evolution reaction based Os single-atom catalysts. Firstly, series SACs with ranging from + 0.9 to 2.9 are synthesized via modifying coordination environments, including Os-N3S1, Os-N4, Os-S6, Os-C3, Os-C4S2. A volcano-type relation emerge summit at moderate experimental 1.3 (Os-N3S1). Mechanism studies illustrate that increasing states, adsorption H atoms is strengthened due increased energy level decreased occupancy anti-bonding Os-H bond until become empty. Further weakens because bonding states. In this work, emphasize essential role manipulating activity, which offers insightful guidance for rational design

Language: Английский

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Recent advances in non-noble metal-based bifunctional electrocatalysts for overall seawater splitting

Journal of Alloys and Compounds, Journal Year: 2022, Volume and Issue: 922, P. 166113 - 166113

Published: July 6, 2022

Since seawater is one of the most abundant resources on earth, electrolysis becoming increasingly attractive for clean energy/hydrogen production. Although significant progress has been made recently, it still challenging to obtain bifunctional electrocatalysts with high catalytic activity and durability suitable because scarcity precious metals inadequate state-of-the-art materials overall reaction. The development high-performance crucial commercialization in this review, mechanism challenges are introduced. Optimization strategies different types non-noble-metal-based including structural regulation, interface doping situ assembly, alloying, amorphization summarized elucidate relationship among composition, structure, properties. Finally, challenge prospective future catalysts discussed. This paper aims at providing guidance insights into rational design highly efficient practical splitting.

Language: Английский

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Highly dispersed Bi clusters for efficient rechargeable Zn−CO2 batteries

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 307, P. 121145 - 121145

Published: Jan. 25, 2022

Language: Английский

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Recent Progress on Fe‐Based Single/Dual‐Atom Catalysts for Zn–Air Batteries

Small, Journal Year: 2022, Volume and Issue: 18(43)

Published: Feb. 25, 2022

Abstract As one of the most competitive candidates for large‐scale energy storage, zinc–air batteries (ZABs) have attracted great attention due to their high theoretical specific density, low toxicity, abundance, and safety. It is highly desirable but still remains a huge challenge, however, achieve cheap efficient electrocatalysts promote commercialization. Recently, Fe‐based single‐atom dual‐atom catalysts (SACs DACs, respectively) emerged as powerful ZABs derived from maximum utilization atoms, excellent catalytic performance, price. In this review, some fundamental concepts in field are presented recent progress on reported SACs DACs summarized, mainly focusing relationship between structure performance at atomic level, with aim providing helpful guidelines future rational designs atomically dispersed active sites. Finally, advantages challenges also discussed.

Language: Английский

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MoC nanocrystals confined in N-doped carbon nanosheets toward highly selective electrocatalytic nitric oxide reduction to ammonia

Nano Research, Journal Year: 2022, Volume and Issue: 15(10), P. 8890 - 8896

Published: Aug. 18, 2022

Language: Английский

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Atomically dispersed metal-nitrogen-carbon electrocatalysts for oxygen reduction reaction: from synthesis strategies to activity engineering

Materials Today Energy, Journal Year: 2022, Volume and Issue: 26, P. 101017 - 101017

Published: April 16, 2022

Language: Английский

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Synergistic cooperation between atomically dispersed Zn and Fe on porous nitrogen-doped carbon for boosting oxygen reduction reaction

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 335, P. 122875 - 122875

Published: May 13, 2023

Language: Английский

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