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公开(公告)号：US10269503B2
公开(公告)日：2019-04-23
申请号：US15359743
申请日：2016-11-23
Inventor： Kwang Chul Roh , Dae Soo Jung , Mok-Hwa Kim
IPC: H01G11/06 , H01G11/26 , H01G11/32 , H01G11/38 , H01G11/52 , H01G11/62 , H01G11/74 , H01G11/86 , H01G11/24 , H01G11/34 , H01G11/50 , H01G11/82
Abstract: The present invention relates to a lithium-sulfur ultracapacitor including a cathode containing a sulfur-porous carbon composite material; a separator; a lithium metal electrode disposed on an opposite side of the cathode with respect to the separator; a graphite-based electrode disposed adjacent to the lithium metal electrode; and an electrolyte impregnating the cathode, the lithium metal electrode, and the graphite-based electrode, wherein the lithium metal electrode and the graphite-based electrode together constitute an anode, and a method of preparing the lithium-sulfur ultracapacitor. According to the present invention, since the lithium metal electrode and the graphite-based electrode are adjacent to each other, lithium ions arising from the lithium metal electrode are pre-doped on the graphite-based electrode due to an internal short circuit between the lithium metal electrode and the graphite-based electrode, migrate from the graphite-based electrode to the cathode during a discharging process, and migrate from the cathode to the graphite-based electrode during a charging process, and such migrations contribute to excellent charging and discharging properties of the lithium-sulfur ultracapacitor.
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公开(公告)号：US20170323735A1
公开(公告)日：2017-11-09
申请号：US15359743
申请日：2016-11-23
Inventor： Kwang Chul Roh , Dae Soo Jung , Mok-Hwa Kim
CPC classification number: H01G11/06 , H01G11/24 , H01G11/26 , H01G11/32 , H01G11/34 , H01G11/38 , H01G11/50 , H01G11/52 , H01G11/62 , H01G11/74 , H01G11/82 , H01G11/86 , Y02E60/13 , Y02T10/7022
Abstract: The present invention relates to a lithium-sulfur ultracapacitor including a cathode containing a sulfur-porous carbon composite material; a separator; a lithium metal electrode disposed on an opposite side of the cathode with respect to the separator; a graphite-based electrode disposed adjacent to the lithium metal electrode; and an electrolyte impregnating the cathode, the lithium metal electrode, and the graphite-based electrode, wherein the lithium metal electrode and the graphite-based electrode together constitute an anode, and a method of preparing the lithium-sulfur ultracapacitor. According to the present invention, since the lithium metal electrode and the graphite-based electrode are adjacent to each other, lithium ions arising from the lithium metal electrode are pre-doped on the graphite-based electrode due to an internal short circuit between the lithium metal electrode and the graphite-based electrode, migrate from the graphite-based electrode to the cathode during a discharging process, and migrate from the cathode to the graphite-based electrode during a charging process, and such migrations contribute to excellent charging and discharging properties of the lithium-sulfur ultracapacitor.
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