公开(公告)号：US20210107791A1

公开(公告)日：2021-04-15

申请号：US16498537

申请日：2018-03-29

申请人： HYDRO-QUÉBEC ,  Arkema France

发明人： Ali DARWICHE ,  Martin DONTIGNY ,  Naoyuki KONDO ,  Abdelbast GUERFI ,  Karim ZAGHIB ,  Julien BEAUSOLEIL ,  Alexander KORZHENKO

IPC分类号： C01B32/17 ,  H01M4/587 ,  H01M10/0525

摘要： The present invention proposes a process for purifying raw carbon nanotubes to obtain an content in metallic impurities comprised between 5 ppm and 200 ppm. The process includes an increase in the bulk density of the raw carbon nanotubes via compacting to produce compacted carbon nanotubes. The process further includes sintering the compacted carbon nanotubes by undergoing thermal treatment under gaseous atmosphere in order to remove at least a portion of the metallic impurities contained in the raw carbon nanotubes, and consequently producing purified carbon nanotubes. These purified carbon nanotubes are directly usable as electronic conductors serving as basis additive to an electrode material without requiring any subsequent purification step. The electrode material can then be used to manufacture an electrode destined to a lithium-ion battery.

公开(公告)号：US20230339758A1

公开(公告)日：2023-10-26

申请号：US18298075

申请日：2023-04-10

申请人： HYDRO-QUÉBEC ,  Arkema France

发明人： Ali DARWICHE ,  Martin DONTIGNY ,  Naoyuki KONDO ,  Abdelbast GUERFI ,  Karim ZAGHIB ,  Julien BEAUSOLEIL ,  Alexander KORZHENKO

IPC分类号： H01M4/587 ,  C01B32/17 ,  H01M10/0525 ,  H01M4/62

CPC分类号： C01B32/17 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  C01B2202/06 ,  C01B2202/22 ,  C01B2202/30 ,  C01B2202/32 ,  C01P2004/50 ,  C01P2004/54 ,  C01P2006/11

摘要： A process for purifying raw carbon nanotubes to obtain a content in metallic impurities of between 5 ppm and 200 ppm. The process includes an increase in the bulk density of the raw carbon nanotubes via compacting to produce compacted carbon nanotubes. The process further includes sintering the compacted carbon nanotubes by undergoing thermal treatment under gaseous atmosphere in order to remove at least a portion of the metallic impurities contained in the raw carbon nanotubes, and consequently producing purified carbon nanotubes. These purified carbon nanotubes are directly usable as electronic conductors serving as basis additive to an electrode material without requiring any subsequent purification step. The electrode material can then be used to manufacture an electrode destined to a lithium-ion battery.