公开(公告)号：EP3218954A1

公开(公告)日：2017-09-20

申请号：EP15859325.1

申请日：2015-11-10

Applicant: BASF Corporation

Inventor： NEI, Jean ,  YOUNG, Kwo ,  ROTAROV, Damian

IPC: H01M10/34 ,  H01M10/26 ,  H01M4/38

CPC classification number: H01M10/26 ,  H01M4/242 ,  H01M4/381 ,  H01M10/345 ,  H01M2300/0014 ,  H01M2300/0091

Abstract: Metal hydride batteries comprising an electrolyte composition which comprises an aqueous solution comprising one or more compounds selected from the group consisting of metal hydroxides, metal oxide/hydroxides and ammonium hydroxides where when the electrolyte composition comprises KOH, the composition also comprises a further compound selected from the group consisting of metal hydroxides, metal oxide/hydroxides and ammonium hydroxides, exhibit reduced degradation of the anode material during operation. Anode materials advantageously exhibit ≤ 95% of the degradation of the same anode material in the same battery when replacing the electrolyte composition with 6M aqueous KOH and exhibit conductivity of ≥ 50% of that of 6M aqueous KOH. Anode materials are for example ABx high capacity hydrogen storage alloys comprising Mg where x is from about 0.5 to about 5 and which has a discharge capacity of ≥ 400 mAh/g.

Abstract translation: 包含电解质组合物的金属氢化物电池，所述电解质组合物包含含有选自金属氢氧化物，金属氧化物/氢氧化物和氢氧化铵中的一种或多种化合物的水溶液，其中当电解质组合物包含KOH时，所述组合物还包含选自 由金属氢氧化物，金属氧化物/氢氧化物和氢氧化铵组成的组表现出降低阳极材料在操作过程中的降解。 当用6M KOH水溶液代替电解质组合物时，阳极材料有利地表现出相同电池中相同阳极材料的95％的降解，并显示出6M KOH水溶液的电导率的≥50％的电导率。 阳极材料例如是包含Mg的ABx高容量储氢合金，其中x为约0.5至约5，并且其具有≥400mAh/ g的放电容量。