4.7 Article

The effect of N precursors in Fe-N/C type catalysts based on activated silicon carbide derived carbon for oxygen reduction activity at various pH values

Journal

JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 823, Issue -, Pages 593-600

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2018.06.040

Keywords

Fe-N/C catalysts; Oxygen reduction reaction; Durability; Alkaline media; Acidic media; 1,3-di(1H-imidazol-1-yl)-2-propanol

Funding

  1. EU through the European Regional Development Fund under project TK141 Advanced materials and high-technology devices for energy recuperation systems [2014-2020.4.01.15-0011]
  2. EU through the European Regional Development Fund under project NAMUR Nanomaterials - research and applications [3.2.0304.12-0397]
  3. Estonian institutional research grant [IUT20-13]

Ask authors/readers for more resources

Simple and modified synthesis route for preparation of Fe-N/C type oxygen reduction reaction (ORR) catalysts has been worked out and discussed. The significant effect of the N precursor chemical composition on the ORR activity in 0.1 M KOH and 0.1 M HClO4 electrolyte solutions has been demonstrated. The half-wave potential values increased in the following order: C(SiC) < Fe + Urea/C < Fe + EDTA/C < Fe + DIPO/ C <= Fe + Phen/C <= Fe + Bipyr/C in both electrolyte solutions studied. Molar ratio of Fe:N precursor and Fe content change in the Fe + Bipyr/C catalyst was found to be negligible. Noticeable change in ORR activity has been observed after acid treatment step of Fe + Bipyr/C. The 150-h durability tests demonstrated that in terms of the activity/stability ratio the Fe + Phen/C is the best ORR catalyst.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Nanoscience & Nanotechnology

The deconvolution of FTIR-ATR spectra to five Gaussians for detection of small changes in plant-water clusters

Peeter Laurson, Piret Raudsepp, Hedi Kaldmae, Ave Kikas, Uno Maeorg

AIP ADVANCES (2020)

Article Chemistry, Physical

Study of the structural curvature in Mo2C derived carbons with contrast matched small-angle neutron scattering

Rasmus Palm, Riinu Harmas, Eneli Hark, Ben Kent, Heisi Kurig, Miriam Koppel, Margarita Russina, Indrek Tallo, Tavo Romann, Jitendra Mata, Kenneth Tuul, Enn Lust

Summary: The study explored the impact of synthesis conditions on the formation of porous and graphitic structures of carbon materials, showing that lower synthesis temperatures result in predominantly nano-scale cylindrical geometries, while higher temperatures promote the formation of slit-like structures.

CARBON (2021)

Article Chemistry, Multidisciplinary

Efficient Sulfur Host Based on Yolk-Shell Iron Oxide/Sulfide-Carbon Nanospindles for Lithium-Sulfur Batteries

Dongjiu Xie, Shilin Mei, Yaolin Xu, Ting Quan, Eneli Haerk, Zdravko Kochovski, Yan Lu

Summary: This study introduced a simple route to synthesize a series of sulfur host materials with the same yolk-shell nanospindle morphology but tunable compositions for investigating the specific effect of chemical composition on the electrochemical performances of Li-S batteries. The S/FeS2-C electrode exhibited the best performance with an initial capacity of 877.6 mAh/g at 0.5 C and a retention ratio of 86.7% after 350 cycles, showing the potential for optimizing materials for other functionalities and applications.

CHEMSUSCHEM (2021)

Article Chemistry, Multidisciplinary

The Nanostructure of Water-in-Salt Electrolytes Revisited: Effect of the Anion Size

Gabriela Horwitz, Eneli Haerk, Paula Y. Steinberg, Leide P. Cavalcanti, Sebastian Risse, Horacio R. Corti

Summary: This study evaluates the structural nano-heterogeneity of lithium WiS electrolytes using small-angle neutron scattering (SANS) patterns, indicating that the salt volume fraction is the determining factor for forming the nanostructure. These findings may represent a paradigm shift for designing WiS electrolytes.

ACS NANO (2021)

Article Chemistry, Physical

Synthesis and Characterization of Cobalt and Nitrogen Co-Doped Peat-Derived Carbon Catalysts for Oxygen Reduction in Acidic Media

Rutha Jager, Patrick Teppor, Maarja Paalo, Meelis Harmas, Anu Adamson, Olga Volobujeva, Eneli Hark, Zdravko Kochovski, Tavo Romann, Riinu Harmas, Jaan Aruvali, Arvo Kikas, Enn Lust

Summary: Peat-derived carbons synthesized using various carbonization protocols were used as carbon supports for non-platinum group metal type catalysts. Higher nitrogen content, surface oxide defects, and specific surface area contribute to the enhanced ORR activity of the Co-N/PDC catalysts in acidic solution, with Co-N/C-2(ZnCl2) showing the highest performance.

CATALYSTS (2021)

Article Chemistry, Physical

Preparation of hard carbon/carbon nitride nanocomposites by chemical vapor deposition to reveal the impact of open and closed porosity on sodium storage

Konstantin Schutjajew, Paolo Giusto, Eneli Haerk, Martin Oschatz

Summary: The sodium-ion battery shows promise as a successor to the lithium-ion battery, but its energy density is limited by the anode. Understanding the relationship between material properties and sodium storage lags behind materials development. There is debate over the role of closed pores in carbons in sodium storage.

CARBON (2021)

Article Chemistry, Physical

Role of the Alkali Metal Cation in the Early Stages of Crystallization of Halide Perovskites

Marion A. Flatken, Eros Radicchi, Robert Wendt, Ana Guilherme Buzanich, Eneli Haerk, Jorge Pascual, Florian Mathies, Oleksandra Shargaieva, Albert Prause, Andre Dallmann, Filippo De Angelis, Armin Hoell, Antonio Abate

Summary: ABX(3) metal halide perovskites have revolutionized the development of new optoelectronics, and controlling the chemistry of precursor solutions is crucial for managing the film morphology and colloidal stability.

CHEMISTRY OF MATERIALS (2022)

Article Chemistry, Multidisciplinary

Poly(ionic liquid) Nanovesicle-Templated Carbon Nanocapsules Functionalized with Uniform Iron Nitride Nanoparticles as Catalytic Sulfur Host for Li-S Batteries

Dongjiu Xie, Yaolin Xu, Yonglei Wang, Xuefeng Pan, Eneli Hark, Zdravko Kochovski, Alberto Eljarrat, Johannes Muller, Christoph T. Koch, Jiayin Yuan, Yan Lu

Summary: This article introduces a method for synthesizing heteroatom-doped carbon materials using poly(ionic liquid) as precursors. Polydopamine coating and ion exchange were used to successfully apply imidazolium-based poly(ionic liquid) nanovesicles in morphology-maintaining carbonization, preparing carbon composite nanocapsules. The strategy was further extended to synthesize carbon composite nanocapsules functionalized with iron nitride nanoparticles. This well-crafted composite nanostructure effectively mitigated the shuttle effect of lithium polysulfides in Li-S batteries, showing excellent electrochemical performance.

ACS NANO (2022)

Review Electrochemistry

The review of advances in interfacial electrochemistry in Estonia: electrochemical double layer and adsorption studies for the development of electrochemical devices

Piret Pikma, Heigo Ers, Liis Siinor, Jinfeng Zhao, Ove Oll, Tavo Romann, Vitali Grozovski, Carolin Siimenson, Mart Vaartnou, Maarja Paalo, Riinu Harmas, Karmen Lust, Thomas Thomberg, Alar Janes, Jaak Nerut, Rutha Jager, Peeter Valk, Indrek Kivi, Martin Maide, Priit Moller, Rait Kanarbik, Gunnar Nurk, Enn Lust

Summary: Nowadays, electrochemistry has various faces and challenges. Although applied electrochemistry has become the main focus, it is important to acknowledge that a comprehensive understanding of the electrochemical processes at the electrode and electrolyte interface is essential for developing novel green energy transition devices. This review provides an overview of the systematic research in the field of electrochemistry in Estonia, highlighting the collaboration between fundamental and applied electrochemistry.

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2023)

Meeting Abstract Chemistry, Multidisciplinary

Powerful SAS techniques for operando analysis of battery materials

E. Haerk, B. Kent, S. Risse, R. Mueller, M. Ballauff, Y. Lu

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES (2021)

Article Chemistry, Physical

Small-angle scattering to reveal the colloidal nature of halide perovskite precursor solutions

Marion A. Flatken, Armin Hoell, Robert Wendt, Eneli Haerk, Andre Dallmann, Albert Prause, Jorge Pascual, Eva Unger, Antonio Abate

Summary: Halide perovskites are crystalline semiconductors that are gaining attention as low-cost, high-performance materials in optoelectronics. Understanding the coordination chemistry in metal halide perovskite precursor solutions is crucial for controlling thin film crystallization, material properties, and device performance. The use of small-angle scattering to study colloidal properties of perovskite precursor solutions reveals important insights into their nanoscale structure and interactions during crystallization.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Review Materials Science, Multidisciplinary

Carbonaceous Materials Investigated by Small-Angle X-ray and Neutron Scattering

Eneli Haerk, Matthias Ballauff

C-JOURNAL OF CARBON RESEARCH (2020)

Article Chemistry, Physical

Morphological evolution of a single crystal silicon battery electrode during lithiation and delithiation: An operando phase-contrast imaging study

Arne Ronneburg, Markus Osenberg, Kang Dong, Andre Hilger, Eneli Haerk, Luca Silvi, Ingo Manke, Matthias Ballauff, Sebastian Risse

ENERGY STORAGE MATERIALS (2020)

Article Chemistry, Multidisciplinary

Peat-derived hard carbon electrodes with superior capacity for sodium-ion batteries

Anu Adamson, Ronald Vali, Maarja Paalo, Jaan Aruvali, Miriam Koppel, Rasmus Palm, Eneli Haerk, Jaak Nerut, Tavo Romann, Enn Lust, Atar Janes

RSC ADVANCES (2020)

No Data Available