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US 2014/0349183 A1Published application
Structured silicon particles
AssigneeNexeon Limited
InventorsWilliam James Macklin, Fiona Scott, Christopher Michael Friend
Life of this patent
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AssigneeNexeon Limited
InventorsWilliam James Macklin, Fiona Scott, Christopher Michael Friend
Estimating the term…
A composite particle is provided. The particle comprises a first particle component and a second particle component in which: (a) the first particle component comprises a body portion and a surface portion, the surface portion comprising one or more structural features and one or more voids, whereby the surface portion and body portion define together a structured particle; and (b) the second component comprises a removable filler; characterised in that (i) one or both of the body portion and the surface portion comprise an active material; and (ii) the filler is contained within one or more voids comprised within the surface portion of the first component. The use of the particle in applications such as electrochemical cells, metal-ion batteries such as secondary battery applications, lithium air batteries, flow cell batteries, fuel cells, solar cells, filters, sensors, electrical and thermal capacitors, micro-fluidic devices, gas or vapour sensors, thermal or dielectric insulating devices, devices for controlling or modifying the transmission, absorption or reflectance of light or other forms of electromagnetic radiation, chromatography or wound dressings is disclosed.
A composite particle comprising a first particle component and a second particle component in which:
A composite particle according to any one of the preceding claims, wherein the first particle component is a pillared particle.
A composite particle according to any one of the preceding claims, wherein the particle has a principal diameter in the range 0.5 to 10 μm.
A composite particle according to any one of the preceding claims, wherein the body portion and the surface portion are formed integrally and the active material comprising the body portion is the same as or is similar to the active material of the surface portion.
A composite particle according to any one of the preceding claims, wherein the active material is an electroactive material.
A composite particle according to any one of the preceding claims, wherein the body portion includes one or more voids extending there through.
A composite particle according to any one of the preceding claims, wherein the active material is an electroactive material is selected from the group comprising silicon, germanium, gallium, lead, aluminium, tin, Se, Te, B, P, binary metal oxides, BC, BSi, Si—C, SiGe, SiSn, GeSn, WC, SiOx, Lithium titanium oxides, TiO2, BN, Bas, AlN, AlP, AlAs, AlSb, GaN, GaP, GaAs, GaSb, InN, InP, InAs, ZnO, ZnS, ZnSe, ZnTe, CdS, CdSe, CdTe, BeSe, BeTe, GeS, GeSe, GeTe, SnS, SnSe, SnTe, PbO, PbSe, PbTe, AgF, AgCl, Agbr, AgI, BeSiN2, ZnGeP2, CdSnAs2, ZnSnSb2, CuGeP3, CuSi2P3, Si3N4, Ge3N4, Al2O3, Al2CO or oxides, nitrides, hydrides, fluorides, mixtures or alloys thereof.
Dependencies are inferred from the claim text.