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Article
Chemistry, Multidisciplinary
Daijie Deng et al.
Summary: P-block metals have been used to synthesize non-noble-metal catalysts due to their easily tunable p-orbitals and versatile electronic structures. The single-atom bismuth sites anchored onto nitrogen-doped three-dimensional porous carbon have shown significant electrocatalytic performance in the oxygen reduction reaction.
Article
Chemistry, Applied
Huan Wang et al.
Summary: The study successfully synthesized sulfur-doped FeWO4 catalyst, which exhibited better activity and stability in the oxygen reduction reaction and showed significant performance in zinc-air batteries.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Chuanlai Jiao et al.
Summary: Low-cost single-atom catalysts (SACs) supported on waste biomass carbon have been developed for oxygen reduction/evolution reactions (ORR/OER) to enhance the performance of metal-air batteries. The hierarchical porous structure and hollow tube morphology of Fe single atoms supported on biomass carbon play a critical role in boosting ORR/OER performance. The high-loading content of Fe single atoms and ultra-high N doping compensate for the insufficient OER performance, resulting in a promising zinc-air battery with high peak power density and stable discharge-charge voltage.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Leilei Yin et al.
Summary: This study reports cerium single atoms (Ce SAs) supported on a P, S, and N co-doped hollow carbon substrate (Ce SAs/PSNC) for the oxygen reduction reaction (ORR). The Ce SAs/PSNC exhibits excellent ORR stability and outperforms commercial Pt/C and most recent SACs. Ce SAs/PSNC-based liquid zinc-air batteries (ZABs) show a high and stable open-circuit voltage and a maximum power density. Theoretical calculations reveal that the introduction of S and P sites significantly modulate the electronic properties of Ce SA active sites, promoting the electroactivity of Ce SAs within the Ce SAs/PSNC.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xuerong Zheng et al.
Summary: A breathing air-electrode configuration was designed using P-type Ca3Co4O9 and N-type CaMnO3 as charge and discharge thermoelectrocatalysts to compensate the charge and discharge overpotentials. The optimized electronic structure of metallic sites enhanced their intrinsic catalytic activity. The breathing Zn-air battery displayed a remarkable energy efficiency of 68.1% at a temperature gradient of 200 degrees C.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xiaorong Lin et al.
Summary: Anchoring single metal atom to carbon supports is an effective strategy to enhance catalyst efficiency. Dual-atom catalysts (DACs) have emerged as a promising candidate for atomic catalysts, outperforming single-atom catalysts (SACs). However, understanding the structure and benefits of polynary single-atom catalysts remains a challenge.
Article
Chemistry, Physical
Bin Chi et al.
Summary: This study reports the co-doping of Zr and Fe dual metal sites into a ZIF-8-derived mesoporous carbon for improved durability and activity in the oxygen reduction reaction. The Zr-doped Fe-N-C catalyst showed only 25% voltage loss after 20 hours of continuous operation and retained 40% of its initial performance after 100 hours, outperforming the catalyst without Zr doping. The cathode also exhibited significantly enhanced ORR activity, achieving a maximum power density of 0.72 W cm-2.
Review
Chemistry, Multidisciplinary
Xiao Xiao et al.
Summary: The lack of a suitable flexible energy storage system has become a major challenge in the development of wearable electronic devices. Flexible Zn-based batteries have emerged as promising candidates due to their safety, eco-efficiency, substantial reserve, and low cost. In this review, the current progress in developing flexible Zn-based batteries is comprehensively reviewed, including their electrolytes, cathodes, and anodes, and discussed in terms of their synthesis, characterization, and performance validation. The challenges in flexible Zn-based battery design are clarified, and future development directions are proposed.
Article
Chemistry, Multidisciplinary
Xiongwei Zhong et al.
Summary: A novel hydrogel with high ionic conductivity and water uptake is developed, which improves the performance of flexible Zn-air batteries, resulting in high discharge capacities and cycle lives. The study provides new avenues for the application of flexible Zn-air batteries in wearable electronics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiayue Fan et al.
Summary: Flexible aqueous zinc-air batteries (FAZABs) with quasi-solid-state gel polymer electrolytes (QSGPEs) containing sulfonate functionalized nanocomposites exhibit high ionic conductivity, alkali tolerance, and zinc anode stability. The FAZAB shows a long cycling life of 450 hours, making it suitable for powering wearable electronics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Ying Li et al.
Summary: In this work, bimetallic transition oxides were successfully synthesized into two-dimensional nanosheets, which expose all the catalytic sites on the surface. Cu, N, and P elements were then doped inside the nanosheets to activate the catalytic sites. The resulting composites show improved catalytic performance for OER and ORR, as well as superior performance as a cathodic catalyst for ZAB.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Long-Ji Yuan et al.
Summary: A Cyan-Fe-N-C catalyst was constructed with the help of axial Fe4C atomic clusters, which exhibited high catalytic performance in acid environment. The Fe-pyrrolic N-4 structure was stabilized and optimized for OH* adsorption, resulting in excellent half-wave potential and power density in fuel cells.
ADVANCED MATERIALS
(2023)
Correction
Chemistry, Physical
Zhen Zhang et al.
ADVANCED ENERGY MATERIALS
(2023)
Article
Daijie Deng et al.
Review
Chemistry, Multidisciplinary
Qi Sun et al.
Summary: Oxygen reduction reaction (ORR) is the rate-determining step in fuel cells and metal-air batteries. Pt-based catalysts, especially Pt/C catalysts, are the most promising electrode materials. However, carbon corrosion and Pt deterioration limit their performance. Non-carbon supports can improve stability and catalytic activity by avoiding direct contact between Pt and carbon materials. Metal oxides show excellent stability but lack electrical conductivity, while metal carbides and nitrides possess both stability and conductivity. This review summarizes the applications, mechanisms, and properties of non-carbon supported Pt catalysts in ORR, with emphasis on anchoring and synergetic effects.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tingting Cui et al.
Summary: The novel dual single-atom catalyst FeMn-DSAC exhibits remarkable bifunctional activities for ORR and OER, enabling efficient operation of the ZAB at ultra-low temperature of -40 degrees C with peak power density of 30 mW cm(-2) and up to 86% specific capacity retention compared to room temperature.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Chenhui Zhou et al.
Summary: A Mn-doped RuO2 bimetallic oxide with atomic-scale dispersion of Mn atoms exhibits remarkable activity and super durability for both ORR and OER, providing a new catalyst design strategy for Zn-air batteries.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Xiao Hai et al.
Summary: A general approach combining wet-chemistry impregnation and two-step annealing enables the scalable synthesis of ultra-high-density single-atom catalysts with metal contents up to 23 wt%, showcasing significantly enhanced reactivity. This method allows for the exploration of a vast library of mono- or multimetallic catalysts with tunable metal loadings.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Yuting He et al.
Summary: This study presents atomically dispersed Fe-Co dual metal sites derived from Fe and Co codoped zeolitic imidazolate frameworks, showing excellent bifunctional catalytic activity for ORR and OER in alkaline media. The FeCo-NC catalyst exhibits outstanding stability and is integrated into an air electrode for fabricating rechargeable and flexible Zn-air batteries, achieving a high power density and long-cycle stability. This work offers a method to design and synthesize atomically dispersed multi-metal site catalysts for advanced electrocatalysis.
Article
Chemistry, Multidisciplinary
Subhajit Sarkar et al.
Summary: In this study, a bifunctional electrocatalyst with target-specific Fe-N-4/C and Co-N-4/C isolated active sites was developed, showing a symbiotic effect on overall oxygen electrocatalysis performances. The dualism of N-dopants and binary metals lowered the d-band centers of Fe and Co in the catalyst, improving the overpotential of the catalytic processes. The Fe, Co, N-C catalyst demonstrated a high areal power density in both liquid and solid-state Zn-air batteries, making it a suitable candidate for air cathode material in ZABs.
Article
Chemistry, Multidisciplinary
Daijie Deng et al.
Summary: This study demonstrates a dynamic synthetic strategy for the rational design of dual-atom catalysts with adjacent atomic metal sites. Through non-covalent interaction, these dual-atom catalysts exhibit outstanding performance in the oxygen reduction reaction. Additionally, the study provides insightful understanding of the non-covalent interplay between heteronuclear metal atoms.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yezhou Hu et al.
Summary: This study develops a hollow carbon confined single-atom catalyst with uniform distribution of Rh single atoms and a unique hollow structure, which effectively enhances the activity, stability, and selectivity of the catalyst.
Article
Chemistry, Multidisciplinary
Ji Yang et al.
Summary: This study reveals the restructuring of the as-synthesized Cu-N4 single-atom site to nanoparticles during the electrochemical reduction of nitrate to ammonia. The restructuring and the enhancement of the ammonia production rate occur concurrently with the applied potential switching. The Cu nanoparticles are found to be the genuine active sites for nitrate reduction to ammonia.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Yisi Liu et al.
Summary: Utilizing bifunctional electrocatalysts with excellent activity and stability for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial for the practical application of rechargeable metal-air batteries. This study presents a novel strategy of bimetallic-ion co-exchange and pyrolysis using bioMOF-1 as the self-template to synthesize NiCo nanoalloy-Co-N-4 embedded hierarchical porous carbon (CoNiCoN4-HPC-900) with outstanding electrocatalytic activity for ORR and OER in alkaline solution.
Article
Chemistry, Multidisciplinary
Yuhui Tian et al.
Summary: This study reports an efficient atomic modulation and structure design strategy to promote bifunctional activity and mass transport kinetics of an ORR/OER electrocatalyst. The prepared catalyst, Fe-N@Ni-HCFs, shows enhanced performance with remarkable power density and cycling stability for Zn-air batteries, surpassing the commercial benchmarks. This research provides a new approach for the design and fabrication of electrocatalysts for energy conversion and storage.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kuixing Ding et al.
Summary: In this study, bifunctional Co-CoN4 hybrid active sites embedded in porous N-rich carbon nanolamellas were successfully constructed through a facile coordination bridging strategy. The designed catalyst exhibited excellent activity and stability for both the ORR and OER, making it a promising candidate for rechargeable Zn-air batteries.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xu Hu et al.
Summary: Through simulations, we found that coordinating pyrrolic N contributes to a higher activity than pyridinic N in the oxygen reduction reaction (ORR), and pyrrolic FeN4C exhibits the highest activity in acidic media. Meanwhile, the in situ transformation of active sites also explains the higher activity of Fe-N-C in alkaline media.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Shan Chen et al.
Summary: This study demonstrates the feasibility of using single atoms to manipulate nucleation behaviors in low-temperature metal batteries, achieving high-rate and dendrite-free zinc plating/stripping behavior under low temperatures.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jeongmin Mo et al.
Summary: We have developed high-performance water-splitting electrodes with extremely low overpotentials and high operational stability using a carbonization/interfacial assembly-induced electroplating approach. These electrodes exhibit significantly better performance than conventional non-noble metal-based electrodes in alkaline media.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Wei Sun et al.
Summary: The study presents a zinc-O-2/zinc peroxide chemistry that operates through a 2e(-)/O-2 process in nonalkaline aqueous electrolytes, allowing highly reversible redox reactions in zinc-air batteries. This innovative ZnO2 chemistry, enabled by water-poor and zinc ion (Zn2+)-rich inner Helmholtz layer, shows superior reversibility and stability compared to alkaline zinc-air batteries.
Article
Chemistry, Multidisciplinary
Yan Li et al.
Summary: This study presents a hybrid catalyst with atomic iron sites anchored on a N,O-doped porous carbon matrix, demonstrating enhanced efficiency and yield for nitrogen reduction reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Long Jiao et al.
Summary: Through the direct pyrolysis of MOFs assembled with Fe and Ni-doped ZnO nanoparticles, a novel Fe-1-Ni-1-N-C catalyst with neighboring Fe and Ni single-atom pairs on nitrogen-doped carbon support has been precisely constructed. The synergism of neighboring Fe and Ni single-atom pairs significantly boosts the electrocatalytic reduction of CO2, surpassing catalysts with separate Fe or Ni single atoms. The study reveals the importance of the communicative effect between adjacent single atoms for improved catalysis in single-atom catalysts containing multiple metal species.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Chuhao Liu et al.
Summary: A hydrogen-pyrolysis etching strategy was developed to manipulate the uncoordinated N dopants in Fe-N-C catalyst, resulting in improved CO conversion efficiency and high CO selectivity over a wider potential range. In situ ATR-SEIRAS and first-principle calculations revealed that this strategy can suppress H-2 generation, promote CO2 activation, and protonation at the atomic interface of FeN4/graphitic N.
Article
Chemistry, Multidisciplinary
Chang-Xin Zhao et al.
Summary: This study reveals the potential advantages of zinc-air batteries for low-temperature energy storage and demonstrates improved performance by regulating the electrolyte structure. The stable performance achieved under extreme low temperatures provides inspiration for the development of advanced battery systems for extreme working conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Energy & Fuels
Sambhaji S. Shinde et al.
Summary: Researchers report a cell-level design for all-solid-state zinc-air pouch cells with exceptionally high energy density and cycle lifespan.
Article
Chemistry, Physical
Xiaohang Li et al.
Summary: A nitrogen/sulfur codoped single iron site catalyst (Fe-N/S-C) prepared through chemical vapor deposition (CVD) showed superior catalytic activity for the oxygen reduction reaction (ORR) in alkaline media. The tuning of optimal charge distribution of Fe sites by N and S codoping and the suppression of iron-carbide-containing iron clusters formation contributed to the high performance of the catalyst. Further studies demonstrated its promising performance as a cathode catalyst in direct methanol fuel cells.
Article
Chemistry, Physical
Yiyan Wang et al.
Summary: This study developed a highly efficient strategy for preparing large-area flexible CNF films with excellent bifunctional catalytic performance, achieved optimal electronic properties for ORR and OER through abundant FeN3-CoN3 sites. The resulting ZAB not only has high specific power and cycling stability, but also the excellent mechanical properties of Fe1Co1-CNF make it suitable for manufacturing portable ZAB with deformability and stability.
Article
Chemistry, Physical
Linxin Zhong et al.
Summary: This study achieved in situ formation of single-atom Fe-N-C catalysts on plate wood-based porous carbon through a facile Lewis acid pretreatment and carbonization process, improving the performance and durability of oxygen reduction reaction and oxygen evolution reaction. The Zn-air battery using this catalyst exhibited high power density and long-term stability.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Meiqi Zhao et al.
Summary: The Fe-1/d-CN catalyst demonstrates excellent ORR activity across different pH ranges, surpassing almost all reported non-noble electrocatalysts and commercial Pt/C catalyst. Its exceptional performance can be attributed to the regulation of Fe centers' electronic structure and remarkable electron/proton transport capability derived from defects and porous features. Moreover, the catalyst shows remarkable durability and performs well in quasi-solid-state Zn-air batteries, displaying high OCV and power density.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Simin Li et al.
Summary: The nitrogen-stabilized single-atom catalyst Zn delta+-NC containing low-valence zinc atoms shows excellent catalytic performance in the electrochemical reduction of CO2 to CO. The unsaturated three-coordinate sites on Zn play a key role in reducing the energy barrier and achieving high CO selectivity. This work sheds light on the relationship between coordination number, valence state, and catalytic performance, with potential industrial applications for high current densities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
Lichen Liu et al.
TRENDS IN CHEMISTRY
(2020)
Article
Chemistry, Physical
Yi Jiang et al.
ADVANCED ENERGY MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Huirong Chen et al.
Editorial Material
Chemistry, Multidisciplinary
Baojuan Xi et al.