Marina Enterria- Post-Doctoral researcher
- PostDoc Position at CIC Energigune
Marina Enterria
- Post-Doctoral researcher
- PostDoc Position at CIC Energigune
About
27
Publications
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Introduction
Current institution
Publications
Publications (27)
Sodium-oxygen batteries hold great promise for the transition to a non-fossil fuel economy due to their high theoretical energy density. One of the most important components of these devices is the air-cathode, where the electrons available at the solid electrode, the Na⁺ ions present in the liquid electrolyte and oxygen gas react to form sodium ox...
In this work we report a framework to understand the role of solvent-salt interactions and how they mediate the performance of sodium-air/O2 batteries. The utilization of suitable electrolyte materials remains a point of major concern within the research community, as their stability and decomposition pathways during cycling are intimately connecte...
The depletion of fossil fuels, the rapid evolution of the global economy, and high living standards require the development of new energy‐storage systems that can meet the needs of the world's population. Metal–oxygen batteries (M=Li, Na) arise, therefore, as promising alternatives to widely used lithium‐ion batteries, due to their high theoretical...
Correction for ‘Flat-shaped carbon–graphene microcomposites as electrodes for high energy supercapacitors’ by Gelines Moreno-Fernández et al. , J. Mater. Chem. A , 2019, 7 , 14646–14655.
Integrated approaches that expedite the production and processing of graphene into useful structures and devices, particularly through simple and environmentally friendly strategies, are highly desirable in the efforts to implement this two-dimensional material in state-of-the-art electrochemical energy storage technologies. Here, we introduce natu...
![Charge/discharge cycling capacities of 16.6 mol % NaTFSI/[C4mpyr]TFSI...](profile/Maria-Echeverria-8/publication/334449688/figure/fig5/AS:11431281245946851@1716264798112/Charge-discharge-cycling-capacities-of-166mol-NaTFSI-C4mpyrTFSI-cells-using-aCNF-140_Q320.jpg)
A series of electrospun binder‐free carbon nanofiber (CNF) mats have been studied as air cathodes for Na–oxygen batteries using a pyrrolidinium‐based electrolyte and compared with the commercial air cathode Toray 090. A tenfold increase in the discharge capacity is attained when using CNFs in comparison with Toray 090, affording a discharge capacit...
Electrically rechargeable zinc-air batteries have gained great attention in recent years due to their capacity to provide high energy density. The electrolyte has played a key role in the advancement of this technology and recently, aqueous chloride-based electrolytes have been demonstrated as a possible alternative to the traditional alkaline syst...
Herein, we report a simple approach for the preparation of phosphate-functionalized carbonaceous graphene-based composites. The homogeneous deposition of a thin layer of phenolic resin on the surface of graphene oxide (GO) sheets was achieved using phosphoric acid as the polymerization catalyst and functionalization agent. Subsequent pyrolysis of t...
Two CeO2/carbon nanotube composites were prepared in both basic and neutral medium thus using different deposition procedures of the cerium oxide. The modification of the synthesis conditions varied the hydrolysis rate of the cerium oxide precursor, leading to materials with different morphology, texture and surface chemistry, significantly changin...
Glucose-derived carbon/carbon nanotube hybrid materials were prepared by hydrothermal carbonization of glucose in the presence of carbon nanotubes and subsequent carbonization, physical or chemical activation. The proportion of carbon nanotubes added during the hydrothermal polymerization of glucose was varied in order to ascertain the optimum dose...
Fundamental understanding of the physical phenomena and electrochemical reactions occurring in metal-air batteries is critical for developing rational approaches towards high-performing Na–O2 battery cathodes. In this context, air cathode porosity plays a key role on battery performance, influencing oxygen supply and hence oxygen reduction and evol...
Porous carbons derived from metal-organic frameworks (MOFs) are promising materials towards a number of energy- and environment-related applications, but their almost exclusively microporous texture can be an obstacle to their performance in practical uses. Here, we introduce a novel strategy for the generation of very uniform mesoporosity in a pro...
Graphene and graphene-based materials have shown great promise in many technological applications, but their large-scale production and processing by simple and cost-effective means still constitute significant issues in the path of their widespread implementation. Here, we investigate a straightforward method for the preparation of a ready-to-use...
Nanostructured mesoporous carbons are widely used in catalysis, adsorption and energy storage. Unlike conventional carbons, the textural properties of nanostructured carbons can be easily adjusted during synthesis. This design of the mesostructure allows to process large molecules by addressing the diffusional limitations/pore blockage which might...
Cerium oxide/multiwalled carbon nanotube composites with different oxide loadings (5–60 wt. %) were prepared by sol-gel deposition of the oxide onto the carbon support. The morphology, texture and surface properties of the prepared materials were studied and correlated with their electrochemical behavior. The different charge storage mechanisms occ...
Activated carbon xerogels with a cellular morphology were obtained from hydrothermally carbonized glucose-graphene oxide (GO) hybrids and tested as supercapacitor electrodes. The effect of the chemical activation (using KOH) on the nanometer-scale morphology, local structure, porous texture and surface chemistry of the resulting carbon materials wa...
Hierarchical carbons with different boron contents (from 0.42 to 2.37 wt.%) were prepared by combination of soft-templating and hydrothermal approaches. This newly developed strategy enables adequate control of the chemical state of the boron functionalities in carbon materials since the self-generated pressures favour B-C bond formation. The total...
A simple procedure to obtain hierarchical micro-mesoporous aluminosilicate composites was developed
by growing MCM-48 silica over commercial Y zeolite. The obtained hierarchical composites have a microporous core and a mesoporous shell. The process consists in assembling dispersed Y zeolite with a mesoporous silica phase that is formed ‘‘in situ’’...
Hierarchical ordered porous carbons show a better behavior as electric double layer capacitors (EDLCs) than disordered carbons especially at high rates thanks to their unique architectural design. In the present work, we demonstrate that mesostructural order is a key factor for the performance of carbons at high rates. For that, two series of hiera...
The objective of this work was to produce carbons with controllable bimodal porosity in the micro-mesopore range. Hierarchical micro-mesoporous carbons were prepared by direct replication, using bimodal Y zeolite core/MCM-48 silica shell aluminosilicates as templates. Different variables of the chemical vapor deposition (CVD) process were studied i...
Hierarchical micro-mesoporous carbons have been obtained by a simple one-pot procedure by adjusting the hydrogen bond interaction between Pluronic 123 surfactant, carbon precursor and tetraethoxysilane (TEOS) in acidic media through changes in carbon precursor nature and concentration. This has resulted in modifications in the packing of surfactant...
Hierarchical micro–mesoporous carbons with high porosity development and ordered structure were prepared. The innovative proposal consists in developing microporosity in ordered mesoporous carbon by chemical activation in template presence in order to minimize the structural damage. Thus, we have directly carried out the chemical activation of a me...
Ordered mesoporous carbon (OMC) with hexagonal arrays of tubes (CMK-3) was synthesized by direct replication, using SBA-15 as template and propylene as carbon source. Microporosity was developed in these OMCs with either carbon dioxide or potassium hydroxide as activating agents; effects of these activation treatments on their pore structure were d...
Questions
Question (1)
Hi to everybody!
I recently installed a Karl-Fisher coulomenter inside a glove box in order to measure the moisture of samples with low H2O content (2-20 ppms). Due to the low H2O content of our samples we purchase a coulometer with diaphragm. We are using Hydranal Coulomat AG and Hydranal coulomat CG as anolite and catholite, respectively.
We have some problems regarding overtritation. Sometimes the solution gets yellow dark suddenly and gets overtritrated. In other occassion a white precipitate appeared all over the cell and also gets overtritrated. I want to know more information about the uncompatibility of organic salts/solvents with this apparatus. I think that some volatile solvents present in the glove box (THF, methanol, DME...) can affect to the reagents in the KF and also i think i could be inyecting compounds affecting to its perfomance (inorganic salts containing sulfates, perclorates or PF6). i also want to know about interferences when injecting ionic liquids.
Also, if you have any suggestion about the manteinance of the KF when is inside the glove box it will be very wellcome. So far, we are taking the cell our cleaning with water/methanol and drying in an oven at 70ºC overninght prior to re-introduce in the glove box. Regarding, the generator electrode with the diaphragm we are cleaning with 10 mL of concentrated nitric acid, 10mL of water and 10mL of methanol and the dry.
Thanks in advance for your inputs.
