公开(公告)号：US20200266492A1

公开(公告)日：2020-08-20

申请号：US16647979

申请日：2018-10-01

Applicant: SAFT

Inventor： Erwan DUMONT ,  Frédéric CASTAING ,  Benjamin LE GUERN ,  Fabrice RENE ,  Michel ULLDEMOLINS ,  Cécile TESSIER ,  Jean-Paul PERES ,  Florent FISCHER

IPC: H01M10/0569 ,  H01M2/16 ,  H01M4/62 ,  H01M4/74 ,  H01M10/0525

Abstract: A lithium-ion electrochemical cell comprising: at least one negative electrode comprising an active material having an operating potential greater than or equal to 1 V with respect to the potential of the electrochemical couple Li+/Li; at least one positive electrode; the negative electrode and/or the positive electrode comprising a binder selected from polytetrafluoroethylene, polyamideimide, polyimide, styrene-butadiene rubber and polyvinyl alcohol or a mixture thereof; a liquid electrolyte comprising a solvent which is an ionic liquid; a separator having a shrinkage of less than or equal to 3% in the direction of its length and in the direction of its width, after exposure to a temperature of 200° C. for a period of at least one hour. This electrochemical cell can be used in charge or discharge at a temperature ranging from room temperature to 150° C. or higher.

公开(公告)号：US20180145314A1

公开(公告)日：2018-05-24

申请号：US15571872

申请日：2016-05-18

Applicant: SAFT

Inventor： Erwan DUMONT ,  Frédéric CASTAING ,  Cécile TESSIER

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/028

Abstract: A composition of active material for a positive electrode of a lithium-ion electrochemical cell is provided comprising: (a) a lithiated oxide of formula Li1+xMO2 in which: 0≤x≤0.15, M designates NiaMnbCocM′d where a>0; b>0; c>0; d≥0 and a+b+c+d=1; M′ being chosen from B, Mg, Al, Si, Ca, Ti, V, Cr, Fe, Cu, Zn, Y, Zr, Nb, Mo or a mixture of these; (b) a lithiated phosphate of formula LiMn1−yM″yPO4 where M″ represents at least one element chosen from the group consisting of Fe, Ni, Co, Mg and Zn; and 0

公开(公告)号：US20150349334A1

公开(公告)日：2015-12-03

申请号：US14655198

申请日：2013-12-13

Applicant: SAFT

Inventor： Erwan DUMONT ,  Philippe BOREL ,  Yannick TORET

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/136 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/131 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/136 ,  H01M4/364 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525

Abstract: The invention relates to a lithium accumulator comprising: a) a current collector (4); and b) a stack of at least two layers (1, 2, 3) arranged on at least one surface of the current collector, wherein a first layer (1) is in contact with the surface of the current collector and comprises a mixture of at least two compounds selected from: a lithiated manganese phosphate, a lithiated transition metal oxide, and a lithiated spinel-type manganese oxide; and an outer layer (2) comprises an active material comprising at least 90% of a lithiated iron phosphate.

Abstract translation: 本发明涉及一种锂蓄电池，包括：a）集电器（4）; 和b）布置在所述集电器的至少一个表面上的至少两层（1,2,3）的堆叠，其中第一层（1）与所述集电器的表面接触，并且包括 选自：锂化磷酸锰，锂化过渡金属氧化物和锂化尖晶石型氧化锰中的至少两种化合物; 并且外层（2）包含包含至少90％的锂化磷酸铁的活性材料。