申请人:BASF SE
公开号:EP3116052A1
公开(公告)日:2017-01-11
The present invention relates to a rechargeable electrochemical cell comprising
(a) at least one anode (a),
(b) at least one gas diffusion electrode (b) comprising at least one porous support,
(c) at least one non-porous metal-ion conducting separator assembly (c) placed between anode (a) and gas diffusion electrode (b), and
(d) at least one composition (d) being in contact with the gas diffusion electrode (b), wherein the composition (d) comprises
(d1) at least one aprotic organic solvent (d1),
(d2) at least one metal salt (d2), and
(d3) at least one redox active compound (d3), wherein the concentration of the redox active compound (d3) in the composition (d) is in the range from 100 to 5000 mmol/l,
wherein any contact of composition (d) with anode (a) is prevented by hermetically sealing these components from each other.
The present invention further relates to a specific composition (d) comprising
(d1) at least one aprotic organic solvent (d1),
(d2) at least one metal salt (d2), and
(d3) at least one redox active compound of general formula (I),
wherein
R1,
R2 are independently from each other selected from H and an organic radical having from 1 to 40 carbon atoms,
X1
is CR5R5a or a nitroxyl radical group N-O·,
X2
is CR6R6a or a nitroxyl radical group N-O·,
X3
is CR7R7a or a nitroxyl radical group N-O·,
X4
is CR8R8a or a nitroxyl radical group N-O·,
X5
is CR9R9a or a nitroxyl radical group N-O·,
R3,
R4, R5, R5a, R6, R6a R7, R7a, R8, R8a, R9, R9a are independently from each other selected from H and an organic radical having from 1 to 40 carbon atoms,
or two adjacent radicals of the group of radicals consisting of R1, R2, R3, R4, R5, R5a, R6, R6a R7, R7a, R8, R8a, R9 and R9a together with the atoms connecting them form a monocyclic or polycyclic, substituted or unsubstituted, aliphatic or aromatic ring system which has from 4 to 40 carbon atoms and can also comprise heteroatoms selected from the group consisting of the elements Si, Ge, N, P, O, S, Se and Te,
and relates to rechargeable electrochemical cells comprising said specific composition (d).
本发明涉及一种可充电电
化学电池,包括
(a) 至少一个阳极(a)
(b) 至少一个气体扩散电极(b),包括至少一个多孔支架、
(c) 至少一个置于阳极(a)和气体扩散电极(b)之间的无孔
金属离子导电分离器组件 (c),以及
(d) 至少一种与气体扩散电极(b)接触的成分(d),其中成分(d)包括
(d1) 至少一种烷基有机溶剂 (d1)
(d2) 至少一种
金属盐(d2),以及
(d3) 至少一种氧化还原活性化合物 (d3),其中氧化还原活性化合物 (d3) 在组合物 (d) 中的浓度范围为 100 至 5000 毫摩尔/升、
通过将组合物(d)与阳极(a)相互密封,防止组合物(d)与阳极(a)发生任何接触。
本发明还涉及一种特定的组合物 (d),其中包括
(d1) 至少一种烷基有机溶剂(d1)、
(d2) 至少一种
金属盐(d2),以及
(d3) 至少一种通式 (I) 的氧化还原活性化合物、
其中
R1,
R2 相互独立地选自 H 和具有 1 至 40 个碳原子的有机基、
X1
是 CR5R5a 或硝基基团 N-O-、
X2
是 CR6R6a 或硝基自由基 N-O-、
X3
是 CR7R7a 或硝基自由基 N-O-、
X4
是 CR8R8a 或硝基自由基 N-O-、
X5
是 CR9R9a 或硝基自由基 N-O-、
R3,
R4、R5、R5a、R6、R6a、R7、R7a、R8、R8a、R9、R9a 相互独立地选自 H 和具有 1 至 40 个碳原子的有机基、
或由 R1、R2、R3、R4、R5、R5a、R6、R6a、R7、R7a、R8、R8a、R9 和 R9a 组成的基团组中的两个相邻基团与连接它们的原子一起形成单环或多环、取代或未取代、脂肪族或芳香族环系,该环系具有 4 至 40 个碳原子,还可以包含选自 Si、Ge、N、P、O、S、Se 和 Te 元素组成的组中的杂原子、
并涉及包含所述特定组合物 (d) 的可充电电
化学电池。