| abstract |
A feed-through, for example a battery feed-through for a lithium-ion battery or a lithium ion accumulator, has at least one base body which has at least one opening through which at least one conductor, for example a pin-shaped conductor, embedded in a glass material is guided. The base body contains a low melting material, for example a light metal, such as aluminum, magnesium, AlSiC, an aluminum alloy, a magnesium alloy, titanium, titanium alloy or steel, in particular special steel, stainless steel or tool steel. The glass material consists of the following in mole percent: 35-50% P 2 O 5 ; 0-14% Al 2 O 3 ; 2-10% B 2 O 3 ; 0-30% Na 2 O; 0-20% M 2 O, with M being K, Cs or Rb; 0-35% Li 2 O; 0-20% BaO; and 0-10% Bi 2 O 3 , the glass material being free of lead except for contaminants. |