摘要:
A solid state battery comprising a substrate (1) at least one multilayered electrochemical cell deposited onto the substrate (1); each multilayered electrochemical cell comprising: a layer of disordered hydrogenated carbon material negative electrode material (3) capable of electrochemically adsorbing and desorbing lithium ions or both lithium and hydrogen ions during charge and discharge; a layer of positive electrode material (5) capable of electrochemically desorbing and adsorbing lithium ions or both lithium and hydrogen ions during charge and discharge; and a layer of insulating/conducting material (4) disposed between the layer of positive electrode material (5) and the layer of negative electrode material (3), where the layer of insulating/conducting material (4) is electrically insulating and capable of readily conducting or transporting lithium ions or both lithium and hydrogen ions from the layer of positive electrode material (5) to the layer of the layer of negative electrode material (3) while the battery is charging and from the layer of negative electrode material (3) to the layer of positive electrode material (5) while the battery is discharging; and an electrically conductive layer (6) deposited atop the last of the at least one multilayered electrochemical cells, the electrically conductive layer (6) providing one battery terminal.
摘要:
A disordered multicomponent MgNi based electrochemical hydrogen storage material having a microstructure including a substantial volume fraction characterized by intermediate range order and exhibiting extraordinarily high storage capacity and methods of fabricating same.
摘要:
A positive electrode material comprising particles (1) including at least one electrochemically active hydroxide and a substantially continuous, uniform encapsulant layer (4) surrounding the particles of positive electrode material. The encapsulant layer is formed from a material which, upon oxidation during processing or charging of the electrode, is convertible to a highly conductive form and upon subsequent discharging of the electrode does not revert to its previous form. Preferably, the electrochemically active hydroxide includes at least nickel hydroxide. The encapsulant layer is preferably formed from at least cobalt hydroxide or cobalt oxyhydroxide and is formed by precipitation from a cobalt salt solution, which can be a cobalt sulfate solution. Electrodes which include the electrochemically active material as well as a precipitation process for forming the material are disclosed.
摘要:
A disordered positive electrode for use in an alkaline rechargeable electrochemical cell comprising: a solid solution nickel aluminum hydroxide material having a multiphase structure. This solid solution nickel hydroxide material is a multiphase structure that comprises at least one microcrystalline α-phase material. Phase stabilizers and conductivity enhancers can be included to further stabilize the material.
摘要:
A solid state battery comprising a substrate (1); at least one multilayered electrochemical cell deposited onto the substrate (1), the multilayered electrochemical cell comprising: a layer of negative electrode material (3) capable of electrochemically adsorbing and desorbing ions during charge and discharge; a layer of positive electrode material (5) capable of electrochemically desorbing and adsorbing ions during charge and discharge; and a layer of insulating/conducting material (4) disposed between the layer of positive electrode material (5) and the layer of negative electrode material (3), where the layer of insulating/conducting material (4) is electrically insulating and capable of readily conducting or transporting ions from the layer of positive electrode material (5) to the layer of negative electrode material (3) while the battery is charging and from the layer of negative electrode material (3) to the layer of positive electrode material (5) while the battery is discharging; and an electrically conductive layer (6) deposited atop the last of the at least one multilayered electrochemical cells, the electrically conductive layer (6) providing one battery terminal.
摘要:
A positive electrode for use in alkaline rechargeable electrochemical cells comprising: a material comprising a compositionally and structurally disordered multiphase nickel hydroxide host matrix which includes at least one modifier chosen from the group consisting of F, Li, Na, K, Mg, Ln, Se, Nd, Pr, Y, Co, Zn, Al, Cr, Mn, Fr, Cu, Zn, Sc, Sn, Te, Bi, Ru and Pb. A process for forming a high loading uniformly distributed multiphase substantially nitrate free sintered positive electrode for use in an alkaline rechargeable electrochemical cell, the process comprising: (1) fabricating sintered electrode material by forming a slurry of nickel powder, water, carboxy methyl cellulose binder, methyl cellulose binder, and a poly(ethyleneoxide) polymer, spreading the slurry on a preoxidized perforated nickel substrate; drying the slurry; and sintering the slurry; (2) impregnating the sintered electrode material using multiple impregnation cycles to attain high loading.
摘要:
Lithiated composite materials and methods of manufacture are provided that are capable of imparting excellent capacity and greatly improved cycle life in lithium-ion secondary cells. By supplementing a high nickel content lithium storage material with a transition metal oxide lithium storage material or a dopant at relatively low levels, the capacity of the high nickel content lithium storage materials is maintained while cycle life is dramatically improved. These characteristics are promoted by methods of producing the materials that intermix unlithiated precursor materials with a lithium source and sintering the materials together in a single sintering reaction. The resulting lithiated composite materials provide for the first time both high capacity and excellent cycle life to predominantly high nickel content electrodes.
摘要:
Disclosed is an anode for a lithium battery comprising a body of carbon, such as graphitic carbon, having a layer of a Group IV element or Group IV element-containing substance disposed upon its electrolyte contacting surface. Further disclosed is an anode comprising a body of carbon having an SEI layer formed thereupon by interaction of a layer of Group IV element or Group IV element-containing substance with an electrolyte material during the initial charging of the battery.