35 results about "Ion dissociation" patented technology

The invention provides an integrated interface-less solid electrolyte lithium ion battery. An electrode binder and a solid electrolyte material of the solid electrolyte lithium ion battery contain the same material ingredient and preferably, contain the same fluorosulfonimide group-containing polymer material component. The electrolyte and the electrode material of the integrated interface-less solid electrolyte lithium ion battery have good compatibility. The electrolyte and the electrode material containing the fluorosulfonimide group have low lithium ion dissociation energy so that lithium ion conductivity is improved in charge and discharge and battery internal resistance is reduced. The invention also provides two integrated battery preparation methods which have simple production processes and realize high electrode active material layer uniformity. The preparation methods have a wide application prospect in the field of solid electrolyte lithium ion batteries and especially in the field of high-rate and high-capacity power solid electrolyte lithium ion batteries.

There is provided an ion-mobility spectrometer. This apparatus includes the following configuration components: An ion source for generating first ions, a first drift unit for separating the first ions by flight drift times, an ion dissociation unit for generating second ions by dissociating the first ions separated, and a second drift unit for separating the second ions by flight drift times. Moreover, the first drift unit, the ion dissociation unit, and the second drift unit are located inside a chamber whose pressure is set at 10 mTorr or higher. This apparatus allows execution of low-cost and high-resolving-power ion separation and detection.

Disclosed are an electrolyte that has good ion conductivity at low temperatures, a battery using the same and a method of use of the same, and an electrolyte production method. A solid electrolyte (16) is disposed between a positive electrode (14) and a negative electrode (15). The electrolyte (16) is formed from an electrolyte salt, such as a lithium salt, carbon clusters, such as fullerenes, an organic solvent, such as acetone, and a liquid that is polar and causes ion dissociation of a polar electrolyte salt, such as EMITFSI (1-ethyl-3-methylimidazolium bis(trifluoromethansulfonyl)imide) or other ionic liquid.

Methods for applying an RF field in a two-dimensional electrode structure include applying RF voltages to main electrodes and to compensation electrodes. The voltages on the compensation electrodes may be adjusted to be proportional to the voltages on the main electrodes. The adjustment(s) may be done to optimize the RF field for different modes of operation such as ion ejection and ion dissociation. For dissociation, a supplemental RF dipole may be applied, or two mutually orthogonal dipoles may be applied in phase quadrature to form a circularly polarized field. Electrode structures may include main trapping electrodes, one or more compensation electrodes, one or more ion exit apertures, and means for applying the various desired voltages.

Methods for applying an RF field in a two-dimensional electrode structure include applying RF voltages to one or more main electrodes and compensation electrodes. The voltages on the one or more compensation electrodes may be adjusted to be proportional to the voltages on the main electrodes. The adjustment(s) may be done to optimize the RF field for different modes of operation such as ion ejection and ion dissociation. For dissociation and other procedures involving ion excitation, the voltages applied to the one or more compensation electrodes may be different from the voltages applied to the one or more main electrodes. Electrode structures may include main trapping electrodes, one or more compensation electrodes, one or more ion exit apertures, and a device or circuitry for applying the various desired voltages.

In a mass spectrometer in which a high ion dissociation efficiency is possible, inserted electrodes are arranged with a form divided into two or more in the axial direction of the ion trap, an electric static harmonic potential is formed from a DC voltage applied to the inserted electrodes, and with an Supplemental AC voltage applied, ions in the ion trap are oscillated between the divided inserted electrodes in the axial direction of the ion trap by resonance excitation, and the ion with a mass / charge ratio within a specific range is mass-selectively dissociated. Thus, a high ion dissociation efficiency is realized by the use of ion trap of the present invention.

Provided is a mass spectroscope employing electron capture dissociation wherein the peak number of detectable fragment ions is increased. The mass spectroscope comprises an ion source (2) for generating ions from a sample, an ion trap (3) for storing and selecting ions, an ion dissociation section (4) performing electron capture dissociation on ions, and a time-of-flight mass spectrometry section (7) performing mass spectrometry on ions, wherein the reaction time of electron capture dissociation is variable depending on the valence of ions subjected to mass spectrometry.

After a precursor ion has been captured within an ion trap (2), electrons having a high energy equal to or higher than 30 eV are introduced from an electron irradiator (7) into the ion trap (2) to increase the number of charges of the ion through an interaction between the electrons and the ion. Hydrogen radicals are subsequently introduced from a hydrogen radical irradiator (5) into the ion trap (2) to dissociate the ion by a hydrogen-attachment dissociation (HAD) method. The larger the number of charges of the ion is, the higher the dissociation efficiency by the HAD method becomes. Therefore, for example, even in the case of using an ion source in which most of the generated ions are singly charged ions as in a MALDI ion source, the dissociation efficiency can be improved by increasing the number of charges of the precursor ion within the ion trap (2).

The invention discloses an ion collision-induced dissociation pool for ion cascade mass spectrometry. The pool is characterized by comprising a multi-pole electrode system symmetrically distributed about a symmetry central axis of a cascade mass spectrometry electrode system, covering electrodes symmetrically disposed at periphery of multiple poles about the central symmetry axis, and a working power source, wherein the area of a cross section of the covering electrodes along the ion inlet-to-outlet direction of the ion collision-induced dissociation pool gradually increases, the working powersource is used for providing an operating voltage to the multiple poles and the covering electrodes to provide a gradient electric field to make ions move from an entrance of the collision-induced dissociation pool to an outlet. The pool is advantaged in that a potential gradient along the symmetry central axis of the cascade mass spectrum can be generated, fragment ions are accelerated to pass through the ion collision-induced dissociation pool, ion collision energy is enhanced, ion dissociation efficiency is improved, and the time that fragments pass through the ion collision-induced dissociation pool is shortened.

The degree of ion dissociation which occurs within a first intermediate vacuum chamber (212) maintained at a comparatively low degree of vacuum depends not only on the amount of energy of the ion but also on the size and other properties of the ion. Accordingly, a predetermined optimum level of DC bias voltage is applied to an ion guide (24) so as to create, within the first intermediate vacuum chamber (212), a DC electric field which barely induces the dissociation of an ion originating from a target compound in a sample while promoting the dissociation of an ion originating from a foreign substance which will form a noise signal in the observation of the target compound. The optimum DC bias voltage is previously determined by creating extracted ion chromatograms based on data collected under various DC bias voltages and evaluating the SN ratio using the chromatograms. Consequently, the accuracy and sensitivity of the quantitative determination is improved as compared to a conventional system in which only the signal strength of the target compound is considered.

The invention discloses a one-pot synthesis method of an anti-liver cancer drug selenite chitosan copper. The one-pot synthesis method comprises the following steps: 1, dissolving chitosan in a formicacid solution to obtain a chitosan acid solution; 2, adding an aqueous copper sulfate solution into the chitosan acid solution, carrying out a complexation reaction under a heating condition for 1 h,and adjusting the pH value of the obtained solution to 7 for 2-3 times until the complexation reaction is complete and the pH value does not drop in order to obtain a product I; 3, heating the product I, adding an aqueous seleninic acid solution in batches, and carrying out a reaction to generate a product II; and 4, cooling the product II, adding isopyknic ethanol until no precipitate is generated, filtering the obtained solution, and washing and drying the precipitate to obtain the selenite chitosan copper. The invention further discloses an application of the selenite chitosan copper in the preparation of antitumor drugs. The method has the advantages of no great change of the pH value of the solution, avoiding of copper ion dissociation and other side reactions, ensuring of complete esterification of 6-hydroxyl groups of chitosan, and increase of the selenization amount.

The invention discloses nano titanium dioxide suspension. By optimization of selection and proportion of raw material components, a visible light absorption wavelength range is effectively expanded, efficient negative ion dissociation capability is achieved after surface coating formation, and accordingly better air purification and bactericidal efficacies can be achieved. By introduction of nano graphene oxide excellent in thermal conductivity and electricity conductivity into the raw material components, the suspension has excellent anti-adhesion and antistatic performances after solidification. The nano titanium dioxide suspension is high in stability, and a preparation method is simple, high in operability and beneficial to industrial large-scale production. The invention further discloses anti-adhesion self-cleaning artificial board decorative paper. The surface of the anti-adhesion self-cleaning artificial board decorative paper is coated with a nano titanium dioxide photocatalyst coating, an efficient negative ion release performance is achieved, and a preparation method of the decorative paper has advantages of simplicity, high efficiency, environmental friendliness and the like. Laminated artificial decorative boards meet requirements of JC / T2110-2012 Indoor Air Ion Concentration Test Method.

The invention relates to a tandem mass spectrometer and a mass spectrometry method, aiming at improving the precision of structural analysis and identification of compounds by collecting information of many product ions in a short time. For this purpose, an ion trap (5) is arranged between the collision cell (3) and the time-of-flight mass separator (6). During the time period during which precursor ions originating from the same compound are selected using the quadrupole mass filter (2), the collision energy is changed from one to the other. Various product ions generated by dissociation under multi-level collision energy respectively and precursor ions that are not dissociated are temporarily trapped in the ion trap (5), and are captured in the form of packets in the state where these ions are mixed is injected and introduced into the time-of-flight mass separator (6) to be subjected to mass spectrometry. Thereby, in the data processing unit ( 21 ), an MS / MS mass spectrum is generated in which the product ions produced in the various dissociation modes occur under the various CID conditions.

The invention relates to a device and a method for dissociation of hydrogen and isotope molecular ions of hydrogen. The method comprises the steps of exciting the electrons in hydrogen and the isotope molecular ions of hydrogen into a dissociative state by ultrashort resonance ultraviolet pulse with the central wavelength of 200 nanometers; after that, controlling the movement of the electrons which are in the dissociative state by terahertz pulse (11.7 terahertz) with the central wavelength of 25.6 microns to realize the control for the dissociation process of hydrogen and the isotope molecular ions of hydrogen and further realize the control for the chemical reaction process. The simulated results prove that for H<2+>, 99.3% of electrons which are in the dissociative state are controlled within a selected nucleon; for D<2+> and T<2+>, the dissociation control rates of 98.9% and 98.2% can be realized.

Systems, methods, and devices to dissociate ions using one or more light emitting diodes (LEDs). A mass spectrometer for ion dissociation includes an ion source for providing ions for dissociation, a mass analyzer, and a photodissociation (PD) device. The PD device includes an ion transport device. The ion transport device is configured perform one or more of: transporting the ions through the PD device, and trapping the ions within a region of the PD device. The PD device also includes one or more LEDs positioned to irradiate the ions in the PD device, resulting in fragmentation of the ions.