Advanced Energy Materials

Journal: Advanced Energy Materials

Publisher

Wiley-VCH

ISSN

1614-6832
1614-6840

Show all metadata

Search Results

Publications 1 - 10 of 59

Operando Visualization of Morphological Dynamics in All‐Solid‐State Batteries
Wu, Xiaohan; Billaud, Juliette; Jerjen, Iwan; et al. (2019)
Advanced Energy Materials
Building a Better Li-Garnet Solid Electrolyte/Metallic Li Interface with Antimony
Dubey, Romain; Sastre Pellicer, Jordi; Cancellieri, Claudia; et al. (2021)
Advanced Energy Materials
The deployment of Li-garnet Li7La3Zr2O12 (LLZO) solid-state electrolytes in solid-state batteries is severely hampered by their poor wettability with metallic Li. In this work, Sb is presented as a compelling interfacial layer allowing superior wetting of Li onto a LLZO surface, resulting in a remarkably low Li/LLZO interfacial resistance of 4.1(1) Ω cm2. An atomistic insight into Sb-coated LLZO interface using soft and hard X-ray photoelectron spectroscopy and focused ion beam time-of-flight secondary ion mass spectrometry shows the formation of a Li-Sb alloy as an interlayer. It is determined that the Li/Sb-coated LLZO/Li symmetrical cells exhibit a high critical current density of up to 0.64 mA cm−2 and low overpotentials of 40–50 mV at a current density of 0.2 mA cm−2 without applying external pressure. The electrochemical performance of Sb coated-LLZO pellets is also assessed with an intercalation-type V2O5 cathode. Li/Sb-coated-LLZO/V2O5 full cells deliver stable capacities of around 0.45 mAh cm−2, with a peak current density of 0.3 mA cm−2.
Photophysics of PbS Quantum Dot Films Capped with Arsenic Sulfide Ligands
Tsokkou, Demetra; Papagiorgis, Paris; Protesescu, Loredana; et al. (2014)
Advanced Energy Materials
From Operando Investigations to Implementation of Ni-MOF-74 Oxygen Evolution Electrocatalysts
Linke J., Julia; Rohrbach T., Thomas; Clark A.H., Adam Hugh; et al. (2025)
Advanced Energy Materials
Metal-organic frameworks (MOFs) as electrocatalysts for the alkaline oxygen evolution reaction (OER) show promising catalytic activity by offering great variability and high surface areas, enabling performance optimization and mechanistic studies. However, their stability during reaction and the structure-performance relationship defining the origin of the high OER activity, are still vigorously debated. Herein, operando X-ray absorption spectroscopy and operando X-ray diffraction are applied to unveil the structural and electronic transformations of Ni-MOF-74 during OER. The irreversible destruction of the MOF-74 crystal into a highly OER active, amorphous NiOOH-metal organic compound is identified. Based on these findings, an amorphous Ni metal organic compound (Ni-MOC*) is proposed for achieving high current densities both in a three-electrode cell (14 A gNi⁻¹ at 1.5 VRHE) and in an anion exchange membrane water electrolyzer (AEM-WE) with a stable AEM-WE performance exceeding 100 h at 500 mA cm⁻².
Microfluidic-Assisted Blade Coating of Compositional Libraries for Combinatorial Applications: The Case of Organic Photovoltaics
Rodriguez-Martinez, Xabier; Sevim, Semih; Xu, Xiaofeng; et al. (2020)
Advanced Energy Materials
Microfluidic technologies are highly adept at generating controllable compositional gradients in fluids, a feature that has accelerated the understanding of the importance of chemical gradients in biological processes. That said, the development of versatile methods to generate controllable compositional gradients in the solid-state has been far more elusive. The ability to produce such gradients would provide access to extensive compositional libraries, thus enabling the high-throughput exploration of the parametric landscape of functional solids and devices in a resource-, time-, and cost-efficient manner. Herein, the synergic integration of microfluidic technologies is reported with blade coating to enable the controlled formation of compositional lateral gradients in solution. Subsequently, the transformation of liquid-based compositional gradients into solid-state thin films using this method is demonstrated. To demonstrate efficacy of the approach, microfluidic-assisted blade coating is used to optimize blending ratios in organic solar cells. Importantly, this novel technology can be easily extended to other solution processable systems that require the formation of solid-state compositional lateral gradients.
Ammonolyzed MoO3 Nanobelts as Novel Cathode Material of Rechargeable Li-Ion Batteries
Wang, Xiao-Jun; Nesper, Reinhard; Villevieille, Claire; et al. (2013)
Advanced Energy Materials
Anion Selection Criteria for Water‐in‐Salt Electrolytes
Reber, David; Grissa, Rabeb; Becker, Maximilian; et al. (2021)
Advanced Energy Materials
Water‐in‐salt electrolytes have enabled the development of novel high‐voltage aqueous lithium‐ion batteries. This study explores the reasons why analogous sodium electrolytes have struggled to reach the same level of electrochemical stability. Solution structure and electrochemical stability are compared for 11 sodium salts, selected among the major classes of salts proposed for highly concentrated electrolytes. The water environment established for each anion is related to its position in the Hofmeister series and a surprisingly strong correlation between the chaotropicity of the anion and the resulting electrochemical stability of the electrolyte is found. The search for suitable sodium salts is complicated by the fact that higher salt concentrations are needed than for their lithium equivalents. Reaching such a high concentration of >25 mol kg−1 with one or a combination of multiple sodium salts that have the desired properties remains a major challenge. Hence, alternative approaches such as multisolvent systems should be explored. The water solubility of NaTFSI can be increased from 8 to 30 mol kg−1 in the presence of ionic liquids. Such a ternary electrolyte enables stable cycling of a 2 V class sodium‐ion battery based on the NaTi2(PO4)3/Na2Mn[Fe(CN)6] electrode couple for 300 cycles at 1C with a Coulombic efficiency of >99.5%.
Precursor Decomposition, Microstructure, and Porosity of Yttria Stabilized Zirconia Thin Films Prepared by Aerosol-Assisted Chemical Vapor Deposition
Schlupp, M. V. F.; Martynczuk, J.; Prestat, M.; et al. (2013)
Advanced Energy Materials
A Bio-Inspired Dendritic MoOx Electrocatalyst for Efficient Electrochemical Nitrate Reduction to Ammonia
Xu, Yuan‐Zi; Abbott, Daniel F.; Dürr, Robin; et al. (2024)
Advanced Energy Materials
Drawing inspiration from the nitrate reductase enzymes, which catalyze nitrate to nitrite in nature, here a bio-inspired, reduced molybdenum oxide (MoOx) shell is introduced that is grown on top of a dendritic nickel foam core (NiNF). The resulting MoOx/NiNF material is prepared via a facile, two-step electrodeposition strategy using commercially available, low-cost precursors. This catalytic material displays a remarkable faradaic efficiency (FE) of 99% at −0.5 V versus RHE and a high ammonia (NH3) yield rate of up to 4.29 mmol h−1 cm−2 at −1.0 V versus RHE in neutral media. Most importantly, MoOx/NiNF exhibits exceptional stability for the nitrate reduction reaction (NO3RR), maintaining operation for over 3100 h at a high current density of −650 mA cm−2, with a yield rate of 2.6 mmol h−1 cm−2 and a stable average NH3 FE of ≈83%. Through combined XPS and in situ Raman spectroscopy it is shown that the pronounced affinity of MoOx/NiNF for nitrate is associated with a substantial presence of oxygen vacancies within the material.
Glass-Type Polyamorphism in Li-Garnet Thin Film Solid State Battery Conductors
Garbayo, Iñigo; Struzik, Michal; Bowman, William J.; et al. (2018)
Advanced Energy Materials

Publications 1 - 10 of 59

Journal: Advanced Energy Materials

Abbreviation

Publisher

Journal Volumes

ISSN

Description

Filters

Search Results