公开(公告)号：US10344404B2

公开(公告)日：2019-07-09

申请号：US15162052

申请日：2016-05-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seong-Mu Jo ,  Sung-Ho Lee ,  Han-Ik Joh ,  Se-Joon Park ,  Hyeon-uk Yeo ,  Bon-Cheol Ku

IPC: D01F1/10 ,  D01F9/22 ,  C04B35/83 ,  D01F11/16

Abstract: The present disclosure relates to a preparation method for lowering a production cost of a high performance carbon fiber using a nanocarbon composite carbon fiber precursor fiber crosslinked by electron beam. More particularly, the present disclosure relates to a preparation method of a nanocarbon composite carbon fiber, including a nanocarbon containing step for containing nanocarbon in a structure of a carbon fiber precursor fiber, a nanocarbon composite carbon fiber precursor fiber preparation step for forming a composite of the nanocarbon and the carbon fiber precursor fiber by electron beam irradiation to enable crosslinking for improved heat resistance of the carbon fiber precursor fiber containing the nanocarbon, an oxidation⋅stabilization step for oxidizing⋅stabilizing the nanocarbon composite carbon fiber precursor fiber, and a carbonization step for carbonizing the oxidized⋅stabilized nanocarbon composite carbon fiber precursor fiber, and a nanocarbon composite carbon fiber prepared by the preparation method.

公开(公告)号：US20140329131A1

公开(公告)日：2014-11-06

申请号：US14310038

申请日：2014-06-20

Applicant: Korea Institute of Science and Technology

Inventor： Seong-Mu Jo ,  Dong-Young Kim ,  Byung-Doo Chin

IPC: H01M2/16

CPC classification number: H01M2/1666 ,  B29C48/142 ,  B29K2079/08 ,  B29K2995/0016 ,  B29L2031/34 ,  B29L2031/3468 ,  B29L2031/755 ,  H01G9/02 ,  H01G11/18 ,  H01G11/52 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1633 ,  H01M2/1653 ,  H01M10/0525 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: A polyolefin separator having an heat-resistant ultrafine fibrous layer and a secondary battery using the same, in which the separator has a shutdown function, low thermal contraction characteristics, thermal endurance, excellent ionic conductivity, excellent cycling characteristics at the time of battery construction, and excellent adhesion with an electrode. The present invention adopts a very simple and easy process to form an ultrafine fibrous layer through an electrospinning process, and at the same time, to remove solvent and to form pores. Accordingly, the separator of the present invention is useful particularly for electrochemical devices used in a hybrid electric automobile, an electric automobile, and a fuel cell automobile, requiring high thermal endurance and thermal stability.

Abstract translation: 具有耐热超细纤维层的聚烯烃隔膜和使用其的二次电池，其中隔膜具有关闭功能，低热收缩特性，耐热性，优异的离子导电性，电池构造时的优异的循环特性， 和与电极的优异粘合性。 本发明采用非常简单和容易的方法，通过静电纺丝方法形成超细纤维层，同时除去溶剂并形成孔。 因此，本发明的隔膜特别适用于需要高耐热性和热稳定性的混合电动汽车，电动汽车和燃料电池汽车中使用的电化学装置。