摘要:
An electrolyte for a lithium secondary battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, and a polar additive based on a substituted hetero-bicyclic compound. Oxidation of the electrolyte is prevented by formation of a polar thin film on a surface portion of the positive electrode, which facilitates transfer of lithium ions. The lithium secondary batteries using the electrolyte have excellent high temperature life characteristics and high temperature conservation characteristics.
摘要:
A lithium air battery including a negative electrode comprising lithium, a positive electrode using oxygen as a positive active material, and an organic electrolyte including an organic compound capable of intercalating and deintercalating electrons involved in an electrochemical reaction.
摘要:
An apparatus and method for injecting synchronized stream data into a Motion Picture Experts Group 2 (MPEG-2) video/audio transport stream for a digital data broadcasting service. The apparatus and method for injecting synchronized stream data calculate the injection time point of data access unit (DAU) that forms the synchronized stream data and injects DAU into the MPEG-2 video/audio transport stream based on the calculated injection time point so that the synchronized stream data could be presented smoothly in a receiver. The synchronized stream data injecting apparatus includes: an additional data storing unit, a synchronized stream data selection/establishment unit, a synchronized stream data analyzing unit, a transport stream analyzing unit, a synchronized stream data injection/management unit, a presentation time stamp re-stamping unit and a multiplexing unit.
摘要:
The present invention relates a bicycle that can be connected to each other such that it may be used as a one seat bicycle as well as the bicycle built for two or more people, wherein a top tube forming a frame is positioned to be separated from a fixed tube attached to a head tube, a clutch means is converted from an un-clutch state to a clutch state between the fixed tube and top tube, and a synchronizer is positioned between a front fork and the clutch means, which is separated at the clutch state and attached at the un-clutch state so that in case of the one seat bicycle, the head tube is integrally connected to the top tube while in case of a rear one of the bicycle built for two or more people, the head tube is pivotally converted to the top tube thereby the rear one not toppling over during steered as well as converting the one seat bicycle to the bicycle built for two or more people when two or more bicycle are connected to each other in tandem.In addition, in case of the bicycle built for two or more people, a foremost operator so as to control brakes of all rear connected bicycles at ones, to smoothly operate the brakes at the limited battery capacity and to minimize a consumption of the battery capacity, the present invention relates a bicycle that can be connected to each other such that the foremost operator controls the brakes of all rear connected bicycles at ones because a pulse phase signal generated by an encoder when the encoder is interworked with a brake lever, is inputted to all rear connected bicycles at ones, a duty rate obtained by assembling a phase signal corresponding to the pulse signal of the rotary encoder connected to a rotary shaft of the brake lever and a stepped waveform outputted from the frequency determining circuit, allows all brake modulator motor of the all the bicycles to be operated so that branch lines connected to the traditional brake is rolled up an released though a deceleration gear and is maintained at the rolled up state when a ratchet finger is go in gear with a ratchet gear positioned in a center of a spool thereby maintaining a brake force of all connected bicycles at the unpowered state.
摘要:
A lithium air battery including a negative electrode comprising lithium, a positive electrode using oxygen as a positive active material, and an organic electrolyte including an organic compound capable of intercalating and deintercalating electrons involved in an electrochemical reaction.
摘要:
An attachable pad for a support includes an attachable pad body, an attachment sheet bonded to the attachable pad body, a cap covering the attachable pad body, an operation cap fixing the cap to the attachable pad body, and a support-connecting fixing ring between the cap and the operation cap. A main body wing is integrally provided in the attachable pad body between the attachment sheet and the attachable pad body. A fixing screw nut is integrally molded to the attachable pad body. A fixing screw bolt is separated from the nut to fix the fixing screw bolt to the fixing screw nut. A second pressing member is provided inside the cap to support the body wing. The second pressing member presses the body wing together with the body to the surface of an object while a first pressing member is pressing the body to the surface of the object.
摘要:
The disclosure relates to an anode active material, a non-aqueous lithium secondary battery, and a manufacturing method thereof. The anode active material of this disclosure comprises a carbon-based material, and a coating film formed on the surface of the carbon-based material by performing heat treatment using an ammonia-based compound. The coating film may be formed on the surface of the carbon-based material through a thermal decomposition method using 10% or less by weight of the ammonia-based compound with respect to the carbon-based material. Since the surface of the carbon-based material is thermally treated using the ammonia-based compound, side reaction of the carbon-based material with an electrolyte at the surface thereof can be suppressed and structural stability can be enhanced, thereby improving battery lifespan and high-rate capability of a non-aqueous lithium secondary battery.
摘要:
A cathode and a battery including a cathode active material including a layer-structured material having a composition of xLi2MO3-(1-x)LiMeO2; and a metal oxide having a perovskite structure. The cathode active material may have improved structural stability by intermixing a metal oxide having a similar crystalline structure with the layer-structured material, and thus, life and capacity characteristics of a cathode and a lithium battery including the metal oxide may be improved.
摘要:
A lithium air battery including an electrolyte including lithium ion conductive polymers and lithium salts between a positive electrode and a lithium ion conductive solid electrolyte membrane. The lithium ion conductive polymers are hydrophilic matrix polymers.
摘要:
An electrolyte for a lithium secondary battery including a lithium salt, a nonaqueous organic solvent, and an additive, in which the additive is composed of one or more compounds including a purinone or a purinone derivative. The lithium secondary battery with improved life and high-temperature storage may be provided by using the electrolyte for a lithium secondary battery according to an embodiment of the present invention.