37 results about "Bipolar electrochemistry" patented technology

Concentric bipolar electrode sensors and assemblies provide for and/or facilitate detection and diagnosis of the non-obstructive and pro-inflammatory atherosclerotic lesions in human arteries during catheterization using electrochemical impedance spectroscopy (EIS). Fabrication techniques for concentric bipolar electrode sensors are also described.

The bipolar electrochemical battery of the invention comprises:

• • a stack of at least two electrochemical cells electrically arranged in series with the positive face of each cell contacting the negative face of an adjacent cell, wherein each of the cells comprises
  • (a) a negative electrode;
  • (b) a positive electrode;
  • (c) a separator between the electrodes, wherein the separator includes an electrolyte;
  • (d) a first electrically conductive lamination comprising a first inner metal layer and a first polymeric outer layer, said first polymeric outer layer having at least one perforation therein to expose the first inner metal layer, said first electrically conductive lamination being in electrical contact with the outer face of the negative electrode; and
  • (e) a second electrically conductive lamination comprising a second inner metal layer and a second polymeric outer layer, said second polymeric outer layer having at least one perforation therein to expose the second inner metal layer, said second electrically conductive lamination being in electrical contact with the outer face of the positive electrode; wherein the first and second laminations are sealed peripherally to each other to form an enclosure including the electrodes, the separator and the electrolyte.

A bipolar lithium-ion electrochemical battery having increased capacity.

Dissymmetric particles also called Janus particles of micron or submicron size and methods of synthesis of Janus particles by bipolar electrochemistry, based on substrates of isotropic or anisotropic shape. The particles include an electrically conductive substrate having at least a chemically and/or physically modified part by deposit of a layer of electrochemically depositable material, and a non-modified part. The particles are of isotropic shape, and the layer of electrochemically depositable material has a specific shape delimited by a precise contour.

Provided is a stacking type quasi-bipolar electrochemical cell having a reliable, easy-to-manufacture, and simple structure. The electrochemical cell includes: an electrode including a current collector, and positive and negative active material layers disposed at both sides of the current collector and spaced apart from each other with a current collector extension part being located therebetween, wherein a polarity of the electrode is used as an opposite polarity in a neighboring cell; an electrode assembly formed by stacking a plurality of electrodes including the electrode; and an electric connection part connecting some of the electrodes of the electrode assembly which are included in the same series, the electric connection part connecting the some electrodes in parallel.

The present invention relates to a continuous bipolar electrochemically based reactor for the purpose of destroying free cyanide by direct and indirect oxidation and removing its strong complexes like ferrocyanide and ferricyanide by electrocoagulation. The designed reactor consists of four main sections, including electrooxidation, hydraulic mixing, electrocoagulation, and precipitation tank. The order of sections results in having a combination of reactions which separately remove cyanide and its compounds. The designed reactor shows a high flexibility in terms of handling highly variable kinds and concentrations of cyanide in the industrial wastewater effluents.

An article for forming an electrochemical device is disclosed. The article comprises a metallic current collector clad with an ion conducting solid-electrolyte material such that intimate contact between the current collector and the ion conducting solid-electrolyte material is made. A lithium metal anode can be formed in situ between the current collector clad and the ion conducting solid-electrolyte material from lithium ions contained within a cathode material that is placed in contact with the ion conducting solid-electrolyte material. A bipolar electrochemical cell can be constructed from the article.

The invention provides a preparation method of medical titanium surface gradient nanometer silver, and relates to the field of medical titanium surface coating modification. The method comprises the following steps of performing medical titanium foil surface pretreatment; preparing TiO2 nanometer tubes; preparing silver ion-containing electrolyte; performing bipolar electrochemical reaction experiment to obtain the medical titanium surface gradient nanometer silver. A gradient nanometer silver coating built on a medical titanium surface with a combination of a conventional electrochemical anode oxidization method and a bipolar electrochemical method; by selecting a proper electrolyte formula and controlling electrochemical parameters, the nanometer silver with the variable particle gradient change can be obtained; a prepared TiO2 nanometer tube arrays have a regular array shape; the arrangement is tight. Nanometer silver particles prepared on the surface of the TiO2 nanometer tube array realize the dimension gradient change. In a short time, the gradient nanometer silver particles can be prepared and obtained in one step on the surface of the titanium nanometer tubes by using the bipolar electrochemical method. The characteristics that the process is simple; the time consumption is short; the realization and the control are easy, and the like are achieved. When the preparationmethod is applied to the high-flux screening of nanometer silver particle antibiosis, the characteristics of high efficiency and high speed are realized.

The invention discloses a method for synthesizing ethylene and oxalic acid from acetylene by a bipolar electrochemical technology. The method comprises the following steps that 0.5 to 2.0 mol/L of electrolyte is added into an electrolytic tank with an isolation membrane, a negative pole and a positive pole and then undergoes electrolysis under the conditions of a room temperature and current density of 40 to 140 mA/cm<2>; acetylene gas is fed into a negative pole chamber and a positive pole chamber simultaneously, wherein acetylene gas in the negative pole chamber undergoes an in-situ reduction reaction with reducing agent hydrogen atoms or hydrogen produced by the electrolysis to produce ethylene, and acetylene gas in the positive pole chamber undergoes an in-situ oxidation reaction withoxidizing agent oxygen atoms or oxygen produced by the electrolysis to produce oxalic acid; and unreacted acetylene-hydrogen mixed gas discharged from the negative pole chamber and unreacted acetylene-oxygen mixed gas discharged from the positive pole chamber are circularly fed respectively into the negative pole chamber and the positive pole chamber for re-reaction. The method simplifies reaction processes, shortens reaction time, saves energy, does not produce secondary pollution and is an environmentally friendly reduction and oxidation synthesis method.

The invention discloses a universal two-electrode modified electrode unit and a preparation method and application thereof. A conductive electrode material substrate is prepared by a photoetching method, a polydimethylsiloxane chip serves as a liquid storage tank, and a cathode and an anode are respectively modified by an electrochemically deposited inert metal protective film and reduced grapheneoxide to obtain the modified electrode unit. The modified electrode unit has outstanding electrocatalytic activity and stability, has very good sensitiveness and reproducibility when used for detecting such biomolecules as hydrogen peroxide and ascorbic acid, and can be connected in parallel into an electrode assembly for batch detection or connected in series into an isolated bipolar electrode to be applied to such fields as bipolar electrochemiluminescence.

Bipolar electrochemistry (BPE) concepts are used to provide a single-step and controllable process for simultaneously exfoliating a graphite source and depositing both graphene oxide and reduced graphene oxide layers on conductive substrates. A bipolar electrochemical cell can be used for a three-in-one deposition and can include two wired pieces of graphite to monitor the amount of current that passes through the bipolar electrode.

The invention discloses a multi-path closed bipolar electrochemical luminescence chip and application thereof in detection and sensing. The chip comprises an integrated bipolar electrode, a driving electrode positive electrode, a driving electrode negative electrode, a support channel and a report channel, one end of the integrated bipolar electrode is a bipolar electrode cathode; the other end of the integrated bipolar electrode is divided into a plurality of parallel branches; the parallel branches stretch across more than one report channel; and the part of the parallel branch, which is arranged in the report channel, is the bipolar electrode anode. In the chip, the series bipolar electrode anodes are connected with the same bipolar electrode cathode, so that the modification process of the bipolar electrode cathode is reduced, and multiple targets from different sample sources can be detected. For the current flowing through the closed bipolar electrode, the magnitude of the current passing through the anode of each bipolar electrode is essentially the same, which is more favorable for examining the light emitting conditions of different areas to evaluate the detection accuracy.

Electrochemical microscopes gradually develop in decades in the past and are used for imaging single-cell biomolecules; however, it is difficult to achieve electrochemical visualization of intracellular proteins in a single cell. According to the application, a model protein (KDM1/LSD1 antigen) in a cell nucleus of an MCF 7 cell is observed by using a wireless bipolar electrochemiluminescence technology (BPE-ECL) for the first time. The submicron-sized single-walled carbon nanotube is connected with the antibody and is used for identifying the corresponding KDM1/LSD1 antigen. Under a low electric field of 1000V/cm, L012 (luminol analogue) is subjected to electrochemical oxidation at the anode end of the nanotube, and an ECL signal is emitted, so that wireless visualization of the position of the nanotube is realized. Under the condition that an externally applied voltage which is low enough is used, bipolar ECL emission on a cell nucleus in a single cell can be observed, and electrochemical imaging of a KDM1/LSD1 antigen in the single cell is supported.