摘要:
Provided is a cable-type secondary battery including an inner electrode comprising at least two anodes arranged in parallel that extend longitudinally and have a horizontal cross section of a predetermined shape, an electrolyte layer serving as an ion channel surrounding the inner electrode, an outer electrode comprising a tubular cathode having a horizontal cross section of a predetermined shape and surrounding the electrolyte layer, and a protection coating surrounding the outer electrode. The cable-type secondary battery has free shape adaptation due to its linearity and flexibility. A plurality of inner electrodes within a tubular outer electrode leads to an increased contact area therebetween and consequently a high battery rate. It is easy to control the capacity balance between the inner and outer electrodes by adjusting the number of inner electrodes.
摘要:
Provided is a method for manufacturing an anode of a cable-type secondary battery having a solid electrolyte layer, including preparing an aqueous solution of an anode active material, making an anode by immersing a core as a current collector having a horizontal cross section of a predetermined shape and extending longitudinally in the aqueous solution, then applying an electric current to form a porous shell of the anode active material on the surface of the core, and forming a solid electrolyte layer on the surface of the anode by passing the anode through a solid electrolyte solution. The anode has a high contact area to increase the mobility of lithium ions, thereby improving battery performance. Also, the anode is capable of relieving stress and pressure in the battery, such as volume expansion during charging and discharging, thereby preventing battery deformation and ensuring battery stability.
摘要:
An anode active material for a lithium secondary battery includes a silicon alloy that includes silicon and at least one kind of metal other than silicon, the silicon alloy allowing alloying with lithium. A volume of an inactive region in the silicon alloy, which is not reacted with lithium, is 50 to 75% of the entire volume of an active material. The anode active material has a large capacity in comparison to carbon-based anode active materials, and also ensures small volume expansion and high capacity retention ratio after charging/discharging, resulting in excellent cycle characteristics.
摘要:
A method for manufacturing a cable-type secondary battery includes: preparing a first polarity current collector having a long and thin shape; forming at least two first polarity electrode active material layers on the first polarity current collector to be spaced apart from each other in the longitudinal direction; forming an electrolyte layer to surround the at least two first polarity electrode active material layers; forming at least two second polarity electrode active material layers on the electrolyte layer to be spaced apart from each other at positions corresponding to the first polarity electrode active material layers; forming an electrode assembly by surrounding the second polarity electrode active material layers with a second polarity current collector; surrounding the electrode assembly with a cover member; and bending the electrode assembly and the cover member into a serpentine configuration with the active regions spaced apart from one another.
摘要:
Provided is a cable-type secondary battery including an anode current collector having a horizontal cross section of a predetermined shape and extending longitudinally, an anode active material pattern layer having anode active material patterns spaced away at a predetermined interval on the anode current collector, an electrolyte layer surrounding the anode active material pattern layer and serving as an ion channel, a cathode active material pattern layer having cathode active material patterns spaced away at a predetermined interval on the electrolyte layer at locations corresponding to those of the anode active material patterns, and a cathode current collector surrounding the cathode active material pattern layer.The cable-type secondary battery having the active material patterns has excellent flexibility to prevent the active material from falling off from the active material layer.
摘要:
A cable-type secondary battery is disclosed. The cable-type secondary battery includes electrodes, each of which includes a current collector having a horizontal cross section of a predetermined shape and an active material layer formed on the surface of the current collector. The electrodes extend in the lengthwise direction and are arranged in parallel. The current collector includes a polymer core and a metal coating layer formed on the surface of the polymer core. The use of the metal-coated polymer current collectors having high flexibility and conductivity makes the secondary battery highly flexible while maintaining the performance of the secondary battery. In addition, the cable-type secondary battery can be reduced in weight.
摘要:
Provided is a cable-type secondary battery including at least one anode extending longitudinally and having a horizontal cross section of a predetermined shape, a first electrolyte layer surrounding the anode and serving as an ion channel, at least one cathode extending longitudinally and having a horizontal cross section of a predetermined shape, the anode and the cathode arranged in parallel, a second electrolyte layer serving as an ion channel commonly surrounding the anode and the cathode, and a protection coating surrounding the second electrolyte layer. The cable-type secondary battery has free shape adaptation due to its linearity and flexibility. Introduction of the electrolyte layer on the electrode prevents a short circuit. The presence of a plurality of electrodes leads to an increased contact area therebetween and consequently a high battery rate. By adjusting the number of the anodes and the cathodes, it is easy to control the capacity balance therebetween.
摘要:
An anode active material for a lithium secondary battery includes a silicon alloy that includes silicon and at least one kind of metal other than silicon, the silicon alloy allowing alloying with lithium. A volume of an inactive region in the silicon alloy, which is not reacted with lithium, is 50 to 75% of the entire volume of an active material. The anode active material has a large capacity in comparison to carbon-based anode active materials, and also ensures small volume expansion and high capacity retention ratio after charging/discharging, resulting in excellent cycle characteristics.
摘要:
Provided is a cable-type secondary battery including at least one anode extending longitudinally and having a horizontal cross section of a predetermined shape, a first electrolyte layer surrounding the anode and serving as an ion channel, at least one cathode extending longitudinally and having a horizontal cross section of a predetermined shape, the anode and the cathode arranged in parallel, a second electrolyte layer serving as an ion channel commonly surrounding the anode and the cathode, and a protection coating surrounding the second electrolyte layer. The cable-type secondary battery has free shape adaptation due to its linearity and flexibility. Introduction of the electrolyte layer on the electrode prevents a short circuit. The presence of a plurality of electrodes leads to an increased contact area therebetween and consequently a high battery rate. By adjusting the number of the anodes and the cathodes, it is easy to control the capacity balance therebetween.
摘要:
A coupling socket of a cable-type secondary battery includes a first connection unit capable of being electrically connected to a terminal of a first polarity electrode of a cable-type secondary battery, a second connection unit capable of being electrically connected to a terminal of a second polarity electrode of another cable-type secondary battery, and a body electrically connected to the first connection unit and the second connection unit, wherein at least one of the first connection unit and the second connection unit is pivotal.