A glass, for example a glass solder, includes the following components in mole percent (mol-%): P.sub.2O.sub.5 37-50 mol-%, for example 39-48 mol-%; Al.sub.2O.sub.3 0-14 mol-%, for example 2-12 mol-%; B.sub.2O.sub.3 2-10 mol-%, for example 4-8 mol-%; Na.sub.2O 0-30 mol-%, for example 0-20 mol-%; M.sub.2O 0-20 mol-%, for example 12-20 mol-%, wherein M is, for example, K, Cs or Rb; Li.sub.2O 0-42 mol-%, for example 0-40 mol-% or 17-40 mol-%; BaO 0-20 mol-%, for example 0-20 mol-% or 5-20 mol-%; and Bi.sub.2O.sub.3 0-10 mol-%, for example 1-5 mol-% or 2-5 mol-%.

A glass, for example a glass solder, includes the following components in mole percent (mol-%): P.sub.2O.sub.5 37-50 mol-%, for example 39-48 mol-%; Al.sub.2O.sub.3 0-14 mol-%, for example 2-12 mol-%; B.sub.2O.sub.3 2-10 mol-%, for example 4-8 mol-%; Na.sub.2O 0-30 mol-%, for example 0-20 mol-%; M.sub.2O 0-20 mol-%, for example 12-20 mol-%, wherein M is, for example, K, Cs or Rb; Li.sub.2O 0-42 mol-%, for example 0-40 mol-% or 17-40 mol-%; BaO 0-20 mol-%, for example 0-20 mol-% or 5-20 mol-%; and Bi.sub.2O.sub.3 0-10 mol-%, for example 1-5 mol-% or 2-5 mol-%.

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.sub.2O.sub.5; 0-14% Al.sub.2O.sub.3; 2-10% B.sub.2O.sub.3; 0-30% Na.sub.2O; 0-20% M.sub.2O, with M being K, Cs or Rb; 0-35% Li.sub.2O; 0-20% BaO; and 0-10% Bi.sub.2O.sub.3, the glass material being free of lead except for contaminants.

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.sub.2O.sub.5; 0-14% Al.sub.2O.sub.3; 2-10% B.sub.2O.sub.3; 0-30% Na.sub.2O; 0-20% M.sub.2O, with M being K, Cs or Rb; 0-35% Li.sub.2O; 0-20% BaO; and 0-10% Bi.sub.2O.sub.3, the glass material being free of lead except for contaminants.

A method for making a feedthrough comprises a/positioning of a body comprising a metallic wall with an orifice passing straight through it on a tool base, preferably one made of graphite; b/placing of the outer portion of the tool around the body; c/insertion of one or more metallic pins in the orifice emerging from the wall and then filling the rest of the orifice with a frit of electrically insulating material; d/placing the upper portion of the tool forming a piston against a zone including the orifice filled with the frit of electrically insulating material, preferably a glass frit, and in which the one or more pins is (are) inserted ; e/application of a temperature and pressure cycle, and a displacement of the piston, to carry out a flash sintering process.

A hermetic terminal includes a metal outer ring made of a low resistance conductor having a through hole, a lead made of a low resistance conductor inserted in the through hole of the metal outer ring, and an insulating material made of high expansion glass for sealing the metal outer ring and the lead.

A hermetic terminal includes a metal outer ring made of a low resistance conductor having a through hole, a lead made of a low resistance conductor inserted in the through hole of the metal outer ring, and an insulating material made of high expansion glass for sealing the metal outer ring and the lead.

A method for forming a hybrid structure is provided. The method includes applying a sealant to a first component fabricated from a first material, coupling an isolation sheet to the sealant, and coupling a second component to the isolation sheet. The isolation sheet and the second component are fabricated from a second material that is different than the first material to facilitate preventing formation of a galvanic cell within the hybrid structure.

A feed-through, in particular a feed-through which passes through part of a housing, in particular a battery housing, for example made of metal, in particular light metal, for example aluminum, an aluminum alloy, AlSiC, magnesium, an magnesium alloy, titanium, a titanium alloy, steel, stainless steel or high-grade steel. The housing part has at least one opening through which at least one conductor, in particular an essentially pin-shaped conductor, embedded in a glass or glass ceramic material, is guided. The base body is, for example, an essentially annular-shaped base body and is hermetically sealed with the housing part such that the helium leakage rate is smaller than 1*10.sup.8 mbar l/sec.

A feed-through, in particular a feed-through which passes through part of a housing, in particular a battery housing, for example made of metal, in particular light metal, for example aluminum, an aluminum alloy, AlSiC, magnesium, an magnesium alloy, titanium, a titanium alloy, steel, stainless steel or high-grade steel. The housing part has at least one opening through which at least one conductor, in particular an essentially pin-shaped conductor, embedded in a glass or glass ceramic material, is guided. The base body is, for example, an essentially annular-shaped base body.