Topics

In operando visualization of the electrochemical formation of liquid polybromide microdroplets.

08:00 EDT 14th August 2019 | BioPortfolio

Summary of "In operando visualization of the electrochemical formation of liquid polybromide microdroplets."

Zn/Br flow batteries are one of the promising technologies for stationary energy storage. Bromine complexing agents have been used to form phase-separated liquid polybromide charging products. However, dynamic and microscopic understanding of the nucleation and growth of the polybromides on the electrode is limited due to the beam-sensitivity and complexity of polybromides and their surrounding electrolytes. In this communication, we report an in operando platform composed of dark field light microscopy and a transparent planar electrochemical cell to dynamically reveal the electrochemical nucleation and formation of polybromides. Using our platform we confirm and reveal the liquid nature, pinning effect (strong interaction with Pt), memory effect (surface residual charge products), self-discharge of the polybromide product, and over-oxidation as a side reaction. We also conclude that the electrochemically formed droplets are mainly MEPBr5 rather than previously reported MEPBr3 with in situ Ra-man spectroscopy. These results provide mechanistic insight into the role of ionic liquid complexing agents and Zn/Br battery design. The in operando visualization platform can also be applied to study other unstable or transient products or intermediates in electrochemical reactions in a non-perturbing manner.

Affiliation

Journal Details

This article was published in the following journal.

Name: Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Pages:

Links

DeepDyve research library

PubMed Articles [10192 Associated PubMed Articles listed on BioPortfolio]

Electrochemical flow cell enabling operando probing of electrocatalyst surfaces by X-ray spectroscopy and diffraction.

The rational improvement of current and developing electrochemical technologies requires atomistic understanding of electrode-electrolyte interfaces. However, examining these interfaces under operando...

Time-Resolved Observations of Liquid-Liquid Phase Separation at the Nanoscale using in situ Liquid Transmission Electron Microscopy.

Liquid-liquid phase separation (LLPS) of proteins into concentrated microdroplets (also called coacervation) is a phenomenon that is increasingly recognized to occur in many biological processes, both...

Correlating ORR activity and structural rearrangements of MgO-supported Pt nanoparticles.

We develop a multi-scale approach towards the design of metallic nanoparticles with applications as catalysts in electrochemical reactions. The here discussed method exploits the relationship between ...

A Novel MnO-Graphite Dual-ion Battery and New Insights into Its Reaction Mechanism during Initial Cycle by Operando Techniques.

Dual ion battery complements lithium ion batteries in terms of the use of inexpensive materials and ease to construct cells. To improve the safety and energy density of dual ion battery, in this paper...

Boundary Geometry Effects on the Coalescence of Liquid Crystalline Tactoids and Formation of Topological Defects.

In many lyotropic liquid crystals, the evolution of macroscopic anisotropic phases is mediated by tactoids, which are discrete ordered microdroplets existing in continuous disordered phases. Here we r...

Clinical Trials [1998 Associated Clinical Trials listed on BioPortfolio]

Electrochemical Skin Conductance in Evaluation of Chronic Neuropathy électrochimique cutanée

Use of cutaneous electrochemical conductance for preclinical screening of small-caliber nerve fibers

Enbrel Liquid Immunogenicity Protocol

The purpose of this study is to assess the antibody formation to Enbrel liquid in subjects with Rheumatoid Arthritis

DECODING Study (Dermal Electrochemical Conductance in Diabetic Neuropathy)

Diabetes mellitus is the leading cause of polyneuropathy in the Western world. Diabetic neuropathy is a frequent complication of diabetes and may have great clinical transcendence due to p...

PECO Air Purification in Hospital Rooms to Improve Health Outcomes for Pediatric Respiratory Distress

This study will investigate the efficacy of a novel air purification technology, Photo Electrochemical Oxidation (PECO), has on pediatric patients hospitalized for respiratory distress. Th...

Effect of Provisional-Crown Surface Coating on Biofilm Formation

Auto polymerizing poly methyl methacrylate (PMMA), and light initiated resin modified PMMAs, are commonly used for fabricating provisional restorations (PRs) during prosthetic treatment 1....

Medical and Biotech [MESH] Definitions

A scanning probe microscopy technique that uses an ultramicroelectrode as the scanning probe that simultaneously records changes in electrochemical potential as it scans thereby creating topographical images with localized electrochemical information.

The removal of a soluble component from a liquid mixture by contact with a second liquid, immiscible with the carrier liquid, in which the component is preferentially soluble. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

X-ray visualization of the chest and organs of the thoracic cavity. It is not restricted to visualization of the lungs.

An electrochemical technique for measuring the current that flows in solution as a function of an applied voltage. The observed polarographic wave, resulting from the electrochemical response, depends on the way voltage is applied (linear sweep or differential pulse) and the type of electrode used. Usually a mercury drop electrode is used.

Membrane transporters that co-transport two or more dissimilar molecules in the opposite direction across a membrane. Usually the transport of one ion or molecule is against its electrochemical gradient and is "powered" by the movement of another ion or molecule with its electrochemical gradient.

Quick Search


DeepDyve research library

Searches Linking to this Article