Patents Assigned to Plurion Limited
  • Cerium batteries
    Patent number: 7625663
    Abstract: A power cell (100A) has an electrolyte that includes a reodox pair comprising cerium. The electrolyte in preferred cells is an acid electrolyte that comprises a element ion complexed by an organic acid or a chelating agent, and contemplated electrolytes may further include a compound that reduces the hydrogen overpotential. Where the power cell comprises a plurality of cells (100B), preferred configurations may include glassy carbon as bipolar electrolytes.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: December 1, 2009
    Assignee: Plurion Limited Company
    Inventors: Robert Lewis Clarke, Brian Dougherty, Stephen Harrison, Peter J. Millington, Samaresh Mohanta
  • Mixed electrolyte battery
    Patent number: 7560189
    Abstract: A battery (100B) comprises an electrolyte in which a first element forms a redox pair with a second element, wherein the battery (100B) is charged at a voltage sufficient to plate the first element at the anode (122B) and wherein the voltage is insufficient to plate the second element on the anode (122B). Preferred batteries include secondary batteries comprising a mixed electrolyte that includes a redox pair formed by a first element and a second element.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: July 14, 2009
    Assignee: Plurion Limited
    Inventors: Robert Lewis Clarke, Brian Dougherty, Stephen Harrison, J. Peter Millington, Samaresh Mohanta
  • Battery with gelled electrolyte
    Patent number: 7297437
    Abstract: An electric device comprises a gelled acid electrolyte (142A) in complex with a lanthanide that forms a redox pair with a second element. Preferred electric devices include batteries and especially primary batteries, while preferred acid electrolytes (124A) have a sulfonic acid group. Contemplated lanthanides especially include cerium, and preferred second elements particularly include zinc. Alternatively, contemplated electric devices may comprise a gelled electrolyte (142A) in which with a lanthanide forms a redox pair with zinc.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: November 20, 2007
    Assignee: Plurion Limited
    Inventors: Robert Clarke, Brian Dougherty, Stephen Harrison, J. Peter Millington, Samaresh Mohanta
  • Load leveling battery and methods therefor
    Patent number: 7270911
    Abstract: A load leveling battery (122) comprising an electrolyte that includes a cerium zinc redox pair wherein preferred electrolytes are acid electrolytes, and most preferably comprise methane sulfonic acid. Contemplated load leveling batteries (122) have an open circuit voltage of at least 2.4 Volt per cell. Such batteries are useful at power grid substations (120) and commercial and industrial applications were large amounts of power are used. Preferred capacity is at least 100,000 kWh, more preferably 250,000 kWh.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: September 18, 2007
    Assignee: Plurion Limited
    Inventors: Robert Lewis Clarke, Brian Dougherty, Stephen Harrison, Peter J. Millington, Samaresh Mohanta
  • Lanthanide batteries
    Patent number: 7252905
    Abstract: A battery (100) comprises an electrolyte in which a lanthanide and zinc form a redox pair. Preferred electrolytes are acid electrolytes, and most preferably comprise methane sulfonic acid, and it is further contemplated that suitable electrolytes may include at least two lanthanides. Contemplated lanthanides include cerium, praseodymium, neodymium, terbium, and dysprosium, and further contemplate lanthanides are samarium, europium, thulium and ytterbium.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: August 7, 2007
    Assignee: Plurion Limited
    Inventors: Robert Clarke, Brian Dougherty, Stephen Harrison, J. Peter Millington, Samaresh Mohanta
  • Secondary battery with autolytic dendrites
    Patent number: 7214443
    Abstract: A battery (100) comprises a cell having a cathode compartment (120) that includes an element that is oxidized during charging of the battery (100), wherein the oxidized element forms a salt with an acid and thereby increases the H+ concentration in the cathode compartment (120) sufficient to promote an H+ flux into the anode compartment (110) across the separator (130), wherein the H+ flux across the separator (130) is sufficient to disintegrate a zinc dendrite proximal to the separator (130).
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: May 8, 2007
    Assignee: Plurion Limited
    Inventors: Robert Lewis Clarke, Brian Dougherty, Stephen Harrison, Peter J. Millington, Samaresh Mohanta