4.8 Article

Creation of densely exposed and cavity-edged single Fe active sites for enhanced oxygen electroreduction

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Green & Sustainable Science & Technology

Rechargeable Zn-air batteries: Recent trends and future perspectives

Kee Wah Leong et al.

Summary: Rechargeable zinc-air batteries have great potential for energy storage and electronics industry, but are hindered by challenges like parasitic reactions and slow oxygen redox kinetics. Through material redesign and new technologies, researchers have made progress in improving the performance and lifespan of these batteries.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

Article Chemistry, Physical

Triple-phase oxygen electrocatalysis of hollow spherical structures for rechargeable Zn-Air batteries

Chen-Chen Weng et al.

Summary: The study focuses on the regulation of the reaction interface microenvironment by structural engineering of a hollow spherical bimetallic electrocatalyst. The well-constructed triple-phase contact points enhance the catalytic efficiency and introduce sulfur dopant to improve catalytic activity. The CoFe-SNC with such a designed microenvironment shows outstanding performance in oxygen reduction reaction and rechargeable Zn-air batteries.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Physical

Ni single atoms anchored on N-doped carbon nanosheets as bifunctional electrocatalysts for Urea-assisted rechargeable Zn-air batteries

Hao Jiang et al.

Summary: In this study, a bifunctional electrocatalyst composed of individually dispersed Ni single atoms on N-doped carbon nanosheets (Ni SAs-NC) was synthesized and demonstrated to exhibit outstanding performance for both oxygen reduction reaction (ORR) and urea oxidation reaction (UOR). By coupling ORR with UOR of low thermodynamic potential, a urea-assisted rechargeable Zn-air battery (ZAB) with significantly decreased charging voltage and high urea elimination rate was achieved. The high bifunctional electrocatalytic activities of Ni SAs-NC resulted in a dramatically increased energy conversion efficiency of 71.8%, improving conventional ZABs by 17.1%. This successful implementation of Ni SAs-based urea-assisted ZABs with improved energy conversion efficiency may advance practical applications of ZAB technology.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Multidisciplinary

Dynamic Behavior of Single-Atom Catalysts in Electrocatalysis: Identification of Cu-N-3 as an Active Site for the Oxygen Reduction Reaction

Ji Yang et al.

Summary: Atomically dispersed Cu-N-C single-atom catalysts with Cu2+-N-4 structure exhibit comparable activity and superior durability to Pt/C in the electrochemical reduction of oxygen. The dynamic evolution of Cu-N-4 to Cu-N-3 and further to HO-Cu-N-2 under ORR conditions is identified, with the low-coordinated Cu+-N-3 being determined as the real active site. The findings may guide the design of more efficient low-cost catalysts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Multidisciplinary Sciences

Subsize Pt-based intermetallic compound enables long-term cyclic mass activity for fuel-cell reduction

Han Cheng et al.

Summary: By breaking the size limitation in Pt alloy systems, subsize Pt-based intermetallic compounds can simultaneously optimize MA and durability. Furthermore, the subsize scale was found to enhance the stability of membrane electrodes, preventing catalyst poisoning by ionomers in humid fuel-cell conditions.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

Article Chemistry, Multidisciplinary

Sulfate Ions Induced Concave Porous S-N Co-Doped Carbon Confined FeCx Nanoclusters with Fe-N4 Sites for Efficient Oxygen Reduction in Alkaline and Acid Media

Huihui Jin et al.

Summary: In this work, an efficient oxygen reduction electrocatalyst is designed with high exposure of active sites in a carbon matrix, accelerating mass transfer and showing impressive activity and stability. The catalyst exhibits higher ORR activity compared to commercial platinum carbon in different media, highlighting its great potential for application.
Article Chemistry, Multidisciplinary

Dynamic Evolution of Solid-Liquid Electrochemical Interfaces over Single-Atom Active Sites

Hui Su et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Article Chemistry, Multidisciplinary

Promoted oxygen reduction kinetics on nitrogen-doped hierarchically porous carbon by engineering proton-feeding centers

Guangbo Chen et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

Article Chemistry, Multidisciplinary

Versatile Strategy for Tuning ORR Activity of a Single Fe-N4 Site by Controlling Electron-Withdrawing/Donating Properties of a Carbon Plane

Yeongdong Mun et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Review Chemistry, Multidisciplinary

Nonprecious Metal Catalysts for Oxygen Reduction in Heterogeneous Aqueous Systems

Andrew A. Gewirth et al.

CHEMICAL REVIEWS (2018)

Article Chemistry, Multidisciplinary

Edge-Site Engineering of Atomically Dispersed Fe-N4 by Selective C-N Bond Cleavage for Enhanced Oxygen Reduction Reaction Activities

Rui Jiang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

Article Chemistry, Multidisciplinary

Single Atomic Iron Catalysts for Oxygen Reduction in Acidic Media: Particle Size Control and Thermal Activation

Hanguang Zhang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Review Chemistry, Multidisciplinary

Recent Advances in Electrocatalysts for Oxygen Reduction Reaction

Minhua Shao et al.

CHEMICAL REVIEWS (2016)

Article Multidisciplinary Sciences

In situ electrochemical quantification of active sites in Fe-N/C non-precious metal catalysts

Daniel Malko et al.

NATURE COMMUNICATIONS (2016)

Review Chemistry, Physical

Hollow Nanocrystals through the Nanoscale Kirkendall Effect

Wenshou Wang et al.

CHEMISTRY OF MATERIALS (2013)

Review Chemistry, Multidisciplinary

Metal Azolate Frameworks: From Crystal Engineering to Functional Materials

Jie-Peng Zhang et al.

CHEMICAL REVIEWS (2012)

Article Chemistry, Physical

Analysis of XPS spectra of Fe2+ and Fe3+ ions in oxide materials

Toru Yamashita et al.

APPLIED SURFACE SCIENCE (2008)

Article Chemistry, Multidisciplinary

Raman spectra of graphite oxide and functionalized graphene sheets

Konstantin N. Kudin et al.

NANO LETTERS (2008)

Article Chemistry, Physical

Monocrystalline spinel nanotube fabrication based on the Kirkendall effect

Hong Jin Fan et al.

NATURE MATERIALS (2006)

Article Multidisciplinary Sciences

Formation of hollow nanocrystals through the nanoscale Kirkendall Effect

YD Yin et al.

SCIENCE (2004)