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Park H.W.,Korea Institute of Ceramic Engineering And Technology | Ju Y.T.,Vitzrocell Co. | Park S.-M.,Korea Institute of Ceramic Engineering And Technology | Roh K.C.,Korea Institute of Ceramic Engineering And Technology
RSC Advances | Year: 2014

The advancement of supercapacitor electrodes is predicated using simple and efficient synthesis methods. In this study a simple electrochemical precipitation method is presented for the synthesis of an α-nickel hydroxide (α-Ni(OH)2) electrode directly on a Ti substrate without any templates or surfactants. The α-Ni(OH)2 electrode possessed a hierarchically porous structure with well-developed inner and outer pores and a large specific surface area of 205.6 m2 g-1. A supercapacitor with this electrode exhibited a high specific capacitance of 1582 F g-1 in 1 M potassium hydroxide (KOH) at a scan rate of 2 mV s-1 and a capacitive retention of almost 74% after 1000 cycles at a current density of 5 mA cm-2. This journal is © The Royal Society of Chemistry 2014.


Patent
Vitzrocell Co. | Date: 2013-07-17

Disclosed herein is a lithium battery which exhibits minimal dimensional deformation of a case thereof and easily discharges gas therefrom. The lithium battery includes an electrode assembly in which cathode and anode plates face each other with a separator therebetween; a case body receiving the electrode assembly and an electrolyte, the case body including a barrel-shaped sidewall open at a top thereof and a bottom bulging in a direction away from the electrode assembly; and a top cap disposed on the top of the case body and provided with a safety exhaust outlet through which gas is discharged upon increase in internal pressure.


The present disclosure provides a cathode for lithium batteries with a structure suited to high output properties, a method of manufacturing the same, and a lithium battery using the same. The cathode has a stack structure including a first cathode member, a separating member and a second cathode member stacked in sequence to have a pipe shape or a folded shape with spaced ends, wherein each of the first and second cathode members includes a current collector and a cathode active material formed on either side of the current collector.


The present disclosure provides a cathode for lithium batteries with a structure suited to high output properties, a method of manufacturing the same, and a lithium battery using the same. The cathode has a stack structure including a first cathode member, a separating member and a second cathode member stacked in sequence to have a pipe shape or a folded shape with spaced ends, wherein each of the first and second cathode members includes a current collector and a cathode active material formed on either side of the current collector.


The present disclosure provides a method of simply manufacturing a header for lithium batteries using a polymer, and a header for lithium batteries manufactured by the same. The method includes securing a body having a hole inside dies and securing a cathode pin in the hole so as not to contact the body, filling the hole with polymer powder, and heating the dies to melt the polymer powder, followed by cooling and curing the melted polymer.

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