公开(公告)号：KR1020140122886A

公开(公告)日：2014-10-21

申请号：KR1020130039886

申请日：2013-04-11

Applicant: 한국과학기술원 ,  한국기계연구원

Inventor： 김일두 ,  이혜문 ,  이초롱

IPC: H01M4/13 ,  H01M2/16 ,  H01M4/139

CPC classification number: H01M4/13 ,  C23C18/10 ,  C23C18/1233 ,  H01M4/0416 ,  H01M4/139 ,  H01M4/38 ,  H01M4/62 ,  H01M4/625 ,  H01M10/052 ,  Y02E60/12

Abstract: The present invention relates to an electrode for a lithium-sulfur secondary battery and a manufacturing method thereof and, more particularly, to an electrode for a lithium-sulfur secondary battery using the composite of polymer nanofibers, aluminum thin films, carbon nanotubes and sulfur. Disclosed is an electrode for a lithium-sulfur secondary battery comprising a porous polymer nanofiber network having a plurality of polymer nanofibers dispersed three-dimensionally to have pores formed therein; aluminum thin films applied to the surfaces of the polymer nanofibers; carbon nanotube connections bound on the surfaces of the polymer nanofibers coated with the aluminum thin films or bound on one another; and a sulfur active material for filling the polymer nanofiber network coated with the aluminum thin films and at least part of the inner pores of a composite current collector composed of the carbon nanotube connections. According to the present invention, conductivity is increased owing to low resistance and a three-dimensional connection structure, a large amount of the sulfur active material is injected into the composite current collector with a porous structure, which is composed of micropores, and leaching thereof is prevented by composing the electrode using the composite of polymer nanofibers, aluminum thin films, carbon nanotubes and sulfur. Therefore, an electrode for a lithium-sulfur secondary battery with high output, large capacity and long life, and a manufacturing method thereof can be realized.

Abstract translation: 本发明涉及一种锂 - 硫二次电池用电极及其制造方法，更具体地说，涉及使用聚合物纳米纤维，铝薄膜，碳纳米管和硫的复合物的锂 - 硫二次电池用电极。 本发明公开了一种锂 - 硫二次电池用电极，其特征在于，包括多孔聚合物纳米纤维网络，其具有三维分散的聚合物纳米纤维，其中形成有孔; 铝薄膜施加到聚合物纳米纤维的表面; 碳纳米管连接结合在涂覆有铝薄膜的聚合物纳米纤维的表面上或彼此结合; 以及用于填充涂覆有铝薄膜的聚合物纳米纤维网和由碳纳米管连接构成的复合集流体的至少部分内孔的硫活性材料。 根据本发明，由于低电阻和三维连接结构导致电导率增加，大量的硫活性材料由微孔组成的多孔结构注入到复合集电体中，并将​​其浸出 通过使用聚合物纳米纤维，铝薄膜，碳纳米管和硫的复合材料构成电极来防止。 因此，可以实现高输出，大容量，长寿命的锂硫二次电池用电极及其制造方法。

公开(公告)号：KR101477782B1

公开(公告)日：2014-12-31

申请号：KR1020130039886

申请日：2013-04-11

Applicant: 한국과학기술원 ,  한국기계연구원

Inventor： 김일두 ,  이혜문 ,  이초롱

IPC: H01M4/13 ,  H01M2/16 ,  H01M4/139

Abstract: 본발명은리튬-황이차전지용전극및 그제조방법에관한것으로서, 구체적으로는고분자나노섬유와알루미늄박막, 탄소나노튜브및 유황의복합체를이용한리튬-황이차전지용전극및 그제조방법에관한것이다. 본발명은복수의고분자나노섬유가 3차원적으로산포되어그 내부에기공이형성된다공성의고분자나노섬유네트워크; 상기고분자나노섬유의표면에코팅된알루미늄박막; 상기알루미늄박막이코팅된고분자나노섬유표면에결착되거나상호결착되는탄소나노튜브연결체; 및상기알루미늄박막이코팅된고분자나노섬유네트워크와상기탄소나노튜브연결체로구성되는복합집전체의내부기공의적어도일부를채우는유황활물질을포함하는것을특징으로하는리튬-황이차전지용전극을개시하며, 본발명에의하여고분자나노섬유, 알루미늄박막, 탄소나노튜브및 유황의복합체를이용한전극을구성함으로써, 낮은저항및 3차원연결구조로인한높은도전성과함께미세기공으로이루어지는다공성구조의복합집전체내부에유황활물질이다량주입되고그 탈리가방지됨으로써고출력, 대용량및 장수명특성을가지는리튬-황이차전지용전극및 그제조방법을구현할수 있는효과를갖는다.

公开(公告)号：KR101570470B1

公开(公告)日：2015-11-23

申请号：KR1020130145261

申请日：2013-11-27

Applicant: 한국과학기술원

Inventor： 김일두 ,  이초롱

IPC: H01M10/05 ,  H01M4/136 ,  H01M2/14

Abstract: 본발명은리튬-황전지에관한것으로서, 구체적으로는탄소나노튜브와다공성막의복합체를포함하는구성되는리튬-황전지에관한것이다. 본발명은황 화합물을포함하여구성되는양극; 다공성막과탄소나노튜브를포함하여구성되는탄소나노튜브-다공성막 복합체; 전해액; 및리튬을포함하여구성되는음극을포함하여구성될수 있고, 상기탄소나노튜브-다공성막 복합체는상기양극및 음극의사이에위치하는것을특징으로하는리튬-황전지를개시하며, 본발명에의하여양극과음극사이에탄소나노튜브와다공성막의복합체를삽입하여전지를구성함으로써, 리튬폴리설파이드의유실을억제하고황의이용률을증가시켜안정적인용량의구현및 장수명을가지며, 제조공정이간단하고생산비용이저렴한리튬-황전지를개시하는효과를갖는다.

公开(公告)号：KR1020150061680A

公开(公告)日：2015-06-05

申请号：KR1020130145261

申请日：2013-11-27

Applicant: 한국과학기술원

Inventor： 김일두 ,  이초롱

IPC: H01M10/05 ,  H01M4/136 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/1613 ,  H01M2/162 ,  H01M4/13 ,  H01M4/134 ,  H01M10/052 ,  Y02E60/12

Abstract: 본발명은리튬-황전지에관한것으로서, 구체적으로는탄소나노튜브와다공성막의복합체를포함하는구성되는리튬-황전지에관한것이다. 본발명은황 화합물을포함하여구성되는양극; 다공성막과탄소나노튜브를포함하여구성되는탄소나노튜브-다공성막 복합체; 전해액; 및리튬을포함하여구성되는음극을포함하여구성될수 있고, 상기탄소나노튜브-다공성막 복합체는상기양극및 음극의사이에위치하는것을특징으로하는리튬-황전지를개시하며, 본발명에의하여양극과음극사이에탄소나노튜브와다공성막의복합체를삽입하여전지를구성함으로써, 리튬폴리설파이드의유실을억제하고황의이용률을증가시켜안정적인용량의구현및 장수명을가지며, 제조공정이간단하고생산비용이저렴한리튬-황전지를개시하는효과를갖는다.

Abstract translation: 本发明涉及一种锂硫电池，更具体地说，涉及一种由含有碳纳米管和多孔膜的复合体形成的锂硫电池，其中锂 - 硫电池包括：具有硫化合物的正电极; 通过包括多孔膜和碳纳米管形成的碳纳米管 - 多孔膜复合物; 电解液 和包含锂的负极。 通过将碳纳米管多孔膜复合体插入正极和负极之间来制造锂硫电池，因此在经常使用硫的同时抑制多硫化锂的损失，从而在制造时具有稳定的容量和寿命 简单的制程成本低廉。