Ngk Insulators, Inc.

Sho Yamamoto

Shohei Yokoyama

Naohito Yamada

Naoko Inukai

Megumi Fujisaki

Naomi Saito

Sota Okochi

Yokoyama Shohei

There is provided a functional layer including layered double hydroxide. The functional has an average porosity of 1 to 40% and an average pore diameter of 100 nm or less.

Functional layer including layered double hydroxide, and composite material

Provided is a layered double hydroxide (LDH) separator including a porous substrate made of a polymeric material; and a hydroxide-ion conductive layered compound being a LDH and/or a LDH-like compound with which pores of the porous substrate are plugged. The LDH separator has a mean porosity of 0.03% to less than 1.0%.

LDH separator and secondary zinc battery

Provided is a hydroxide ion-conductive separator including a porous substrate and a layered double hydroxide (LDH)-like compound filling pores of the porous substrate, wherein the LDH-like compound is a hydroxide and/or an oxide with a layered crystal structure, containing: Mg; and one or more elements, which include at least Ti, selected from the group consisting of Ti, Y, and Al.

Hydroxide ion conductive separator and zinc secondary battery

Provided is an LDH separator including a porous substrate and a layered double hydroxide (LDH) that fills up pores of the porous substrate. The LDH is composed of a plurality of hydroxide base layers containing Mg, Al, Ti, and OH group; and interlayers which are interposed between the plurality of hydroxide base layers and composed of anions and HO.

LDH separator and zinc secondary battery

Provided is a layered-double-hydroxide-(LDH) containing composite material including a porous substrate and a high density LDH-containing functional layer on and/or in the porous substrate. The LDH-containing composite material of the present invention includes the porous substrate and the functional layer formed on and/or in the porous substrate. The functional layer contains a layered double hydroxide represented by the general formula MM(OH)A.mHO (where Mrepresents a divalent cation, Mrepresents a trivalent cation, Arepresents an n-valent anion, n represents an integer not less than 1, x represents a value of 0.1 to 0.4, and m represents a value not less than 0) and has water impermeability.

Layered-double-hydroxide-containing composite material and method for producing same

There is provided a functional layer including a layered double hydroxide (LDH). The functional layer includes a first layer with a thickness of 0.10 &#x3bc;m or more, the first layer being composed of fine LDH particles having a diameter of less than 0.05 &#x3bc;m, and a second layer composed of large LDH particles having a mean particle diameter of 0.05 &#x3bc;m or more, the second layer being an outermost layer provided on the first layer.

There is provided a functional layer including a layered double hydroxide. The functional layer further contains titania.

A battery including, as a separator, a functional layer including a layered double hydroxide that contains Ni, Al, Ti and Zn, and has an atomic ratio Zn/(Ni+Ti+AI+Zn) of 0.04 or more determined by an energy dispersive X-ray analysis (EDS).

Provided is a battery including a layered double hydroxide. The battery includes a positive electrode, a negative electrode, an electrolytic solution being an aqueous alkali metal hydroxide solution, and a layered double hydroxide having a fundamental composition represented by the formula: MM(OH)A&#xb7;mHO where Mrepresents a divalent cation, Mrepresents a trivalent cation, Arepresents an n-valent anion, n is an integer of 1 or more, x is 0.1 to 0.4, and m is any real number, the layered double hydroxide being in contact with the electrolytic solution, wherein a metal compound containing a metal corresponding to Mand/or Mis dissolved in the electrolytic solution such that erosion of the layered double hydroxide by the electrolytic solution is suppressed. The present invention provides a highly reliable battery such that the degradation of a layered double hydroxide (LDH) contained in the battery can be significantly reduced.

Battery using layered double hydroxide

Provided is a layered double hydroxide membrane containing a layered double hydroxide represented by the formula: MM(OH)A.mHO (where Mrepresents a divalent cation, Mrepresents a trivalent cation, Arepresents an n-valent anion, n is an integer of 1 or more, and x is 0.1 to 0.4), the layered double hydroxide membrane having water impermeability. The layered double hydroxide membrane includes a dense layer having water impermeability, and a non-flat surface structure that is rich in voids and/or protrusions and disposed on at least one side of the dense layer. The present invention provides an LDH membrane suitable for use as a solid electrolyte separator for a battery, the LDH membrane including a dense layer having water impermeability, and a specific structure disposed on at least one side of the dense layer and suitable for reducing the interfacial resistance between the LDH membrane and an electrolytic solution.

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Nagoya, Japan

Sho Yamamoto