4.7 Article

Starch-based porous carbon microsphere composited NiCo2O4 nanoflower as bifunctional electrocatalyst for zinc-air battery

Related references

Note: Only part of the references are listed.
Article Biochemistry & Molecular Biology

Polysaccharide of agar based ultra-high specific surface area porous carbon for superior supercapacitor

Qian Liu et al.

Summary: In this study, cross-linked hierarchical porous carbon material with ultra-high specific surface area was prepared via sol-gel freezing-drying and activation process. It exhibited superior specific capacitance and cycle life, making it suitable for high-performance supercapacitors.

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES (2023)

Article Chemistry, Analytical

Tuning NiCo2O4 bifunctionality with nitrogen-doped graphene nanoribbons in oxygen electrocatalysis for zinc-air battery application

Leticia S. Bezerra et al.

Summary: A highly durable bifunctional catalyst for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) on the air electrode of zinc-air batteries (ZAB) was proposed, which consisted of NiCo2O4 blended with nitrogen-doped graphene nanoribbons (GNRN). The catalysts with different ratios of NiCo2O4 and GNRN were evaluated for their activity and electrochemical stability. The results showed that the NiCo2O4(80):GNRN(20) and NiCo2O4(90):GNRN(10) catalysts exhibited high efficiency for both ORR and OER. The NiCo2O4/GNRN-based ZABs showed comparable power densities and specific capacities to the commercial Pt-Ru/C catalyst.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2023)

Article Chemistry, Physical

The catalytic performance enhanced via 7C-electron cloud interaction of polymerized cobalt phthalocyanine/3D-graphene as bifunctional oxygen catalysts for Zn-air battery

Shuaifeng Wang et al.

Summary: In this study, a bifunctional oxygen catalyst, PPcCo/3D-G, was synthesized by combining two-dimensional polymerized cobalt phthalocyanine (PPcCo) with three-dimensional graphene (3D-G) through 7C-7C interaction. The PPcCo/3D-G catalyst exhibited excellent performance in terms of electrochemical activity, electron conduction, and mass transfer. It also showed promising applications in the zinc-air battery (ZAB) and flexible all-solid-state ZAB (FZAB), with high power density, specific capacity, and long-term stability.

JOURNAL OF POWER SOURCES (2023)

Article Engineering, Environmental

Rapid preparation of porous carbon by flame burning carbonization method for supercapacitor

Bolang Chen et al.

Summary: In this study, the feasibility of fabricating porous biocarbon materials through a simple and quick flame burning carbonization synthetic strategy was investigated. Cotton, dandelion, and catkin, which are fluffy and contain lots of air between the tissues, were easily carbonized. K2CO3-KCl acted as an activator, template agent, and surface cover to isolate air with biocarbon and prevent biomass burn out. The prepared carbon exhibited a hierarchical porous structure, large specific surface area, and abundant heteroatoms doping, showing a high specific capacitance of 367 F g-1 in 6 M KOH. Moreover, a large voltage window of K2CO3-glycol-arginine electrolyte was prepared, and the assembled symmetric supercapacitor exhibited an energy density of 30.7 Wh kg-1 and a wide operating temperature range from -25 to 100 degrees C. The practicability of the flame burning rapid carbonization strategy, recycling of K salt, and large-scale production were verified.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Engineering, Environmental

Chitosan derived porous carbon prepared by amino acid proton salt for high-performance quasi-state-solid supercapacitor

Tao Wang et al.

Summary: The electrode material and electrolyte are the key factors affecting supercapacitor performance and current research hotspots. Here, three chitosan-based gel electrolytes were prepared by mixing chitosan with amino acids of different acidity levels. The gel film made from chitosan/aspartate nitrate proton salt demonstrated superior mechanical properties and can be used as a gel electrolyte and separator in supercapacitors. Additionally, the gel film can be used as a carbon precursor to prepare N-doped porous carbon with high energy density.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Energy & Fuels

Oxygen Defect-Enriched Hierarchical NiCo2O4 Hollow Rectangular Nanobars with Enhanced Bifunctional Oxygen Electrocatalysis for Efficient Rechargeable Zinc-Air Batteries

Kai -Lin Bao et al.

Summary: Hierarchical NiCo2O4 hollow rectangular nanobars (NiCo2O4 HRNBs) with ultrathin nanosheets were synthesized via template-directed methodology, exhibiting advanced features of hierarchical hollow nanoarchitecture and high surface area with abundant oxygen vacancies that accelerate oxygen reduction/evolution reaction kinetics. These NiCo2O4 HRNBs demonstrate outstanding bifunctional electrocatalytic performance and show potential for enhancing the performance of zinc-air batteries under alkaline electrolyte conditions.

ENERGY & FUELS (2022)

Article Chemistry, Physical

Large-scale defect-rich iron/nitrogen co-doped graphene-based materials as the excellent bifunctional electrocatalyst for liquid and flexible all-solid-state zinc-air batteries

Yuepeng Liu et al.

Summary: Defect-engineering plays a crucial role in improving the performance of transition-metal-doped carbon-based catalysts for ORR and OER. A novel strategy involving ball-milling induced defect assisted with ZnCl2 has been developed to fabricate defect-rich iron/nitrogen co-doped graphene-based materials (Fe-N-G), showing excellent electrocatalytic performance. Density Functional Theory calculations reveal that the impressive OER performance of Fe-N-G is attributed to the introduction of abundant defects.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

Article Chemistry, Physical

K2CO3-KCl acts as a molten salt flame retardant to prepare N and O doped honeycomb-like carbon in air for supercapacitors

Pengxu Ren et al.

Summary: This paper presents a method to prepare N, O doped honeycomb-like carbon using coal tar pitch as carbon precursors, K2CO3-KCl as activator, and molten salt flame retardant. The as-prepared carbon electrode exhibits high specific capacitance and carbon yield. Additionally, a new type of K2CO3-ethylene glycol deep eutectic solvent (DES) electrolyte is prepared, and the composed symmetrical supercapacitor shows superior energy density in this DES electrolyte.

JOURNAL OF POWER SOURCES (2022)

Article Chemistry, Applied

Fluorinated bimetallic nanoparticles decorated carbon nanofibers as highly active and durable oxygen electrocatalyst for fuel cells

Yiming Leng et al.

Summary: In this study, fluorinated iron and cobalt bimetallic nanoparticles were successfully prepared on nitrogen-doped carbon nanofibers, leading to improved activity and stability of non-precious metal electrocatalyst. The fluorination increased the charge density of the bimetallic catalyst and showed remarkable catalytic performance under acidic conditions.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Physical

Electrodeposition of small-sized NiM2O4 spinels (M: Co, Mn) as bifunctional nanomaterials for rechargeable zinc-air batteries

Jose Bejar et al.

Summary: In this study, NiCo2O4 and NiMn2O4 materials with nanosheet structures were successfully synthesized by electrodeposition. These materials exhibited excellent electrochemical performance in oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), indicating their potential application in Zn-Air batteries.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Article Energy & Fuels

Durability improvement mechanism of proton exchange membrane fuel cell by microporous layer

Ling Zuo et al.

Summary: The presence of microporous layer (MPL) in proton exchange membrane fuel cells (PEMFC) has been found to significantly improve durability by mitigating degradation, protecting the catalyst layer, and alleviating mass transport loss. This study demonstrates the sustained water management capability of MPL even after harsh aging tests, reducing mass transfer resistance.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2022)

Article Materials Science, Multidisciplinary

Preparation of ultrahigh surface area carbon microspheres under solvent-free hypersaline environment for zinc-air batteries with high power density

Xiaofeng Han et al.

Summary: This study develops a starch-based carbon microspheres (CMS) electrocatalyst with ultrahigh specific surface area (SSA) through a solvent-free method under a hypersaline environment. The hypersaline environment promotes the formation of carbon defects and enhances oxygen adsorption and desorption, resulting in improved performance of zinc-air batteries.

MATERIALS CHEMISTRY AND PHYSICS (2022)

Article Chemistry, Physical

Zinc-iron bimetallic-nitrogen doped porous carbon microspheres as efficient oxygen reduction electrocatalyst for zinc-air batteries

Shiliu Yang et al.

Summary: In this study, a zinc-iron-nitrogen doped porous carbon (FeZnNC) was prepared, with zinc acting as both a porogen and dopant, as well as a structural regulator. Electrochemical measurements demonstrated that FeZnNC exhibited higher limiting current density, positive onset potential, and half-wave potential compared to monometallic-nitrogen doped carbons (mono-MNC), as well as superior electrocatalytic stability. Furthermore, FeZnNC + RuO2 powered rechargeable zinc-air batteries showed longer cycling life than those powered by mono-MNC.

APPLIED SURFACE SCIENCE (2021)

Article Chemistry, Analytical

N-doped hollow carbon tubes derived N-HCTs@NiCo2O4 as bifunctional oxygen electrocatalysts for rechargeable Zinc-air batteries

Dongju Fu et al.

Summary: The N-HCTs@NiCo2O4 composite catalyst, with abundant active sites and efficient coupling between N-HCTs and NiCo2O4, shows high catalytic activity for oxygen reduction and oxygen evolution reactions. It demonstrates superior catalytic performance and excellent stability, indicating great potential for practical applications in Zinc-air batteries.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2021)

Article Engineering, Environmental

Interfacing spinel NiCo2O4 and NiCo alloy derived N-doped carbon nanotubes for enhanced oxygen electrocatalysis

Cheng Chen et al.

Summary: By constructing multiphase interfaces, the number of active species on oxygen electrocatalysts was increased, improving catalytic activity for oxygen reduction and oxygen evolution reactions. The resulting catalyst showed superior performance in Zn-air battery, highlighting the synergistic effect between multiphase interfaces in transition metal composite catalysts. This work provides a promising strategy for preparing efficient and stable transition metal electrocatalysts.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

Catalytically Influential Features in Transition Metal Oxides

Yuanmiao Sun et al.

Summary: Efficient catalyst development is crucial for advancing electrocatalysis techniques. Intrinsic features and properties from transition metal oxides (TMOs) have an impact on reaction activity and mechanism, offering opportunities for further advances in catalytic design. Understanding and utilizing these inherent features in TMOs can lead to better strategies for designing TMO-based electrocatalysts.

ACS CATALYSIS (2021)

Article Energy & Fuels

Synthesis of Ultrasmall NiCo2O4 Nanoparticle-Decorated N-Doped Graphene Nanosheets as an Effective Catalyst for Zn-Air Batteries

Yanyi Ma et al.

Summary: In this study, a NiCo2O4 nanoparticle-decorated nitrogen-doped graphene nanosheet (NiCo2O4/N-G) bifunctional electrocatalyst was synthesized, showing excellent ORR and OER activity with superior stability through stable charge-discharge cycling.

ENERGY & FUELS (2021)

Article Energy & Fuels

Constructive designing of ternary metal oxide as an anode material for high performance lithium-ion batteries

Harsharaj S. Jadhav et al.

Summary: The rational design and synthesis of ternary transition metal oxides, such as urchin-like Mn substituted NiCo2O4, grown on a conducting substrate have shown promising electrochemical performance for energy storage applications, with high reversible capacity and excellent stability attributed to their unique 3D structure and abundant mesopores.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH (2021)

Review Chemistry, Multidisciplinary

Advanced Transition Metal-Based OER Electrocatalysts: Current Status, Opportunities, and Challenges

Kexin Zhang et al.

Summary: Oxygen evolution reaction (OER) is crucial in electrochemical applications like water splitting and rechargeable metal-air batteries, but its slow kinetics presents a performance bottleneck. Therefore, rational design of OER electrocatalysts based on understanding mechanisms and structure-activity relationship is essential. Study of reaction pathways, intermediates, and descriptors can lead to more efficient design of transition metal-based OER electrocatalysts.

SMALL (2021)

Article Chemistry, Multidisciplinary

Understanding Single-Atom Catalysis in View of Theory

Wenhua Zhang et al.

Summary: The past decade has seen successful dispersion of isolated single atoms on various substrates for potential applications, intensively investigated in different reactions. While the main research focus in single-atom catalysis is synthesizing stable SACs with clear configurations and impressive catalytic performance, theoretical investigations have also played crucial roles in identifying active sites, revealing catalytic mechanisms, and establishing structure-activity relationships. Special attention should be paid in theoretical works to the particularity of SACs. This Perspective summarizes the theoretical progress made on understanding the rich phenomena in single-atom catalysis.

JACS AU (2021)

Article Chemistry, Physical

Plasma-assisted defect engineering of N-doped NiCo2O4 for efficient oxygen reduction

Jingxuan Zheng et al.

Summary: Defect control using cold plasma to enhance electrocatalytic performance of metal oxides has been proven successful. Introducing oxygen vacancies through plasma treatment with different plasma-forming gases can improve charge transfer and electrocatalytic performance. Plasma-induced N-doping in NiCo2O4 shows enhanced electrocatalytic performance for oxygen reduction reaction, with improvements in current density and onset potential.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2021)

Article Nanoscience & Nanotechnology

Into the carbon: A matter of core and shell in advanced electrocatalysis

Michele Melchionna et al.

APL MATERIALS (2020)

Review Engineering, Environmental

Recent research of core?shell structured composites with NiCo 2 O 4 as scaffolds for electrochemical capacitors

J. P. Cheng et al.

CHEMICAL ENGINEERING JOURNAL (2020)

Article Chemistry, Multidisciplinary

Controlled Synthesis of Bifunctional NiCo2O4@FeNi LDH Core-Shell Nanoarray Air Electrodes for Rechargeable Zinc-Air Batteries

Lei Wan et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2020)

Article Chemistry, Physical

Spinel NiCo2O4 3-D nanoflowers supported on graphene nanosheets as efficient electrocatalyst for oxygen evolution reaction

Zesheng Li et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

Article Engineering, Environmental

The Mn-promoted double-shelled CaCO3 hollow microspheres as high efficient CO2 adsorbents

Shan Li et al.

CHEMICAL ENGINEERING JOURNAL (2019)

Article Nanoscience & Nanotechnology

Multifunctional Electrocatalysis on a Porous N-Doped NiCo2O4@C Nanonetwork

Yuan Ha et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

Review Chemistry, Applied

Bifunctional electrocatalysts for rechargeable Zn-air batteries

Yibo Guo et al.

CHINESE JOURNAL OF CATALYSIS (2019)

Article Electrochemistry

Manganese oxide with hollow rambutan-like morphology as highly efficient electrocatalyst for oxygen evolution reaction

Ping-Ping Liu et al.

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2018)

Article Nanoscience & Nanotechnology

Morphology Control of Carbon-Free Spinel NiCo2O4 Catalysts for Enhanced Bifunctional Oxygen Reduction and Evolution in Alkaline Media

Surya V. Devaguptapu et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

Article Chemistry, Multidisciplinary

Cations in Octahedral Sites: A Descriptor for Oxygen Electrocatalysis on Transition-Metal Spinels

Chao Wei et al.

ADVANCED MATERIALS (2017)

Review Chemistry, Multidisciplinary

Recent advancements in Pt and Pt-free catalysts for oxygen reduction reaction

Yao Nie et al.

CHEMICAL SOCIETY REVIEWS (2015)

Editorial Material Chemistry, Multidisciplinary

Sustainable transportation based on electric vehicle concepts: a brief overview

Ulrich Eberle et al.

ENERGY & ENVIRONMENTAL SCIENCE (2010)