Lg Energy Solution, Ltd.

Lg Chem, Ltd

Ji-Hoon Ryu

Jung-Hoon Lee

Jung-Pil Lee

Eun-Bee Kim

Suk-Woo Lee

Sung-Joong Kang

Jae-Hyun Lee

Guilong Jin

Ji-Young Kim

Hyo-Sik Kim

Seung-He Woo

Jae-Won Lee

Bum-Young Jung

Vin-Na Jo

Ji-Hee Ahn

Yeo-Min Yoon

Yong-Hee Kang

The present disclosure relates to a solid electrolyte membrane for suppressing the growth of lithium dendrites and an all-solid-state battery comprising the same, the solid electrolyte membrane comprising a solid electrolyte material and metal particles, wherein the metal particles form an alloy with lithium.

Electrolyte membrane for all-solid-state battery and all-solid-state battery comprising same

The present disclosure relates to an electrode assembly for an all-solid-state battery with improved safety, and more particularly, to an electrode assembly of a new structure designed to prevent the damage of a solid electrolyte layer caused by a step formed in a negative electrode layer due to changes in thickness of the negative electrode layer, such as an increase or decrease in thickness at part of the negative electrode layer, during charging/discharging. The electrode assembly is characterized by comprising a protective layer having an opening, interposed between the negative electrode and the solid electrolyte layer.

All-solid-state battery using lithium metal for negative electrode

The present disclosure relates to a method for manufacturing a negative electrode for an all solid state secondary battery, including the steps of: (S1) preparing a preliminary negative electrode including: a current collector; and a negative electrode active material layer formed on at least one surface of the current collector, and containing a plurality of negative electrode active material particles and a solid electrolyte; (S2) disposing a lithium layer on the negative electrode active material layer; (S3) dipping the preliminary negative electrode having the lithium layer disposed thereon in an organic solvent; and (S4) removing the lithium layer. The present disclosure also relates to a negative electrode for an all solid state secondary battery obtained by the method. The negative electrode for an all solid state secondary battery provides improved initial efficiency and cycle characteristics.

Negative electrode for all-solid-state battery and method for manufacturing same

The present disclosure relates to a solid electrolyte membrane for an all-solid-state battery and a battery including the same. The battery may include lithium metal as a negative electrode active material. The solid-electrolyte membrane provides an effect of inhibiting growth of lithium dendrite by ionizing lithium deposited as metal. Therefore, when using lithium metal as a negative electrode in the all-solid-state battery including the solid electrolyte membrane, there is provided an effect of delaying and/or inhibiting growth of lithium dendrite. Thus, it is possible to effectively prevent an electrical short-circuit caused by growth of lithium dendrite.

Solid electrolyte membrane and all-solid-state battery comprising same

The present disclosure relates to a solid electrolyte membrane including a polymer electrolyte material and a porous polymer sheet which form a composite with each other in such a manner that the pores of the porous polymer sheet filled with the polymer electrolyte material, and a method for manufacturing the same. Since the porous polymer material and the solid electrolyte material form a composite with each other, it is possible to obtain a solid electrolyte membrane having excellent strength and a small thickness of 50 μm or less, and thus to improve the energy density of a battery.

Solid electrolyte membrane, method for manufacturing same, and all-solid-state battery comprising same

Provided is a solid electrolyte membrane for a solid-state battery, including at least two solid electrolyte layers and at least one volume-swelling layer, wherein the volume-swelling layer is disposed between the solid electrolyte layers. The solid electrolyte membrane includes (a) an ion conductive solid electrolyte material, and the volume-swelling layer includes (b) inorganic particles, wherein the inorganic particles form an alloy with lithium and include a metal, metal oxide or both. Thus, it is possible to provide a solid electrolyte membrane for a solid-state battery fundamentally prevented from a short-circuit by inhibiting growth of lithium dendrite.

Solid electrolyte membrane and solid-state battery comprising same

A composite electrolyte membrane according to the present disclosure includes a phase change layer on a surface in contact with an electrode, for example, a positive electrode. The phase change layer includes a filler, and a physically isolated area between the positive electrode and the composite electrolyte membrane, known as a dead space, is filled with the filler that is liquefied by heat resulting from the increased internal temperature of the battery, thereby reducing the interfacial resistance between the electrolyte membrane and the electrode.

Composite electrolyte membrane and all-solid-state battery comprising the composite electrolyte membrane

The present disclosure relates to a method for manufacturing a solid-state battery, wherein slurry for a solid electrolyte layer is applied to each of the electrodes, and the electrodes are bound to each other before drying to obtain a solid-state battery. In the solid-state battery, each electrode is in close contact with the solid electrolyte membrane to provide excellent interfacial property, such as reduced resistance. In addition, the thickness of the solid electrolyte membrane may be controlled to a level of several microns to provide an effect of increasing the energy density of a unit cell.

Method for fabricating all-solid-state battery including binding electrode portions having electrolyte slurry layer together

The present disclosure relates to an electrode for an all solid-state battery and a method for manufacturing the same. The electrode comprises an electrode active material layer, wherein the gaps between the electrode active material particles forming the electrode active material layer are filled with a mixture of a polymeric solid electrolyte and a conductive material. The method for manufacturing the electrode comprises a solvent annealing process, and the contact between the electrode active material particles and the conductive material is improved through the solvent annealing process, thereby improving ion conductivity of the electrode and capacity realization in the battery.

Method for manufacturing electrode comprising polymeric solid electrolyte and electrode obtained thereby

Provided is a solid electrolyte membrane including a support member, such as a porous sheet, embedded in an electrolyte membrane, wherein the support member is coated with an inhibiting material for inhibiting growth of lithium dendrite. Thus, the solid electrolyte membrane has excellent physical strength, such as puncture strength, and improved durability. In addition, the solid electrolyte membrane has an effect of inhibiting lithium dendrite growth. Thus, when the solid electrolyte membrane is applied to a lithium metal battery including lithium metal as a negative electrode material, there is provided an effect of improving the life characteristics of the battery.

Electrolyte membrane for all-solid-state batteries, and method for manufacturing same

The present disclosure relates to an electrolyte membrane for an all-solid-state battery, an all-solid-state battery comprising the electrolyte membrane and a method for manufacturing the solid electrolyte membrane. The solid electrolyte membrane may be obtained by stacking a first protective layer, a first film-type solid electrolyte material, a porous substrate, a second film-type solid electrolyte material and a second protective layer successively to prepare a laminate structure; and carrying out pressurization of the laminate structure so that the first and the second solid electrolyte materials may be pressed into the porous substrate and the pores of the porous substrate may be filled with the solid electrolyte materials.

Solid electrolyte membrane, method for manufacturing the same and all-solid-state battery comprising the same

The present disclosure relates to an electrode for an all solid-state battery and a manufacturing method thereof, and a mixture of a polymer-based solid electrolyte and a conductive material is filled between electrode active material particles that constitute an electrode active material layer, to increase the contact between the electrode active material particles and the conductive material through a solvent annealing process included in a manufacturing process, thereby improving ionic conductivity in the electrode and capacity in the electrode.

Method for manufacturing electrode comprising polymer-based solid electrolyte and electrode manufactured by the method

A solid electrolyte membrane for a solid-state battery and a battery comprising the same is provided. The battery may comprise lithium metal as a negative electrode active material. The solid electrolyte membrane comprises an inhibiting layer, which is preferably capable of inhibiting growth of lithium dendrite, because it includes an effective amount of a dendrite growth-inhibiting material, which is capable of ionizing lithium deposited in the form of metal. Thus, when lithium metal is used as a negative electrode for a solid-state battery comprising the solid electrolyte membrane, it is possible to delay and/or inhibit growth of lithium dendrite, and thus to effectively prevent an electrical short-circuit caused by dendrite growth.

Solid electrolyte membrane and solid-state battery comprising the same

The present disclosure relates to a solid electrolyte membrane for an all-solid-state battery and a battery comprising the same. In the present disclosure, the battery may comprise lithium metal as a negative electrode active material. The solid electrolyte membrane for an all-solid-state battery according to the present disclosure comprises a guide layer comprising metal particles to guide the horizontal growth of lithium dendrites, thereby delaying an electrical short caused by dendrite growth. Additionally, the guide layer is formed by polymer self-assembly, and thus the metal particles may be uniformly distributed in a very regular pattern within the guide layer.

Electrolyte membrane for all-solid-state battery, and all-solid-state battery including same

The present disclosure relates to an all solid-state battery cell and a method for manufacturing the same. The gaps between the electrode active material particles forming the electrode active material layer are filled with a mixture of a polymeric solid electrolyte with a conductive material, and an organic solid electrolyte membrane is interposed between the positive electrode and the negative electrode. The method comprises a solvent annealing process to improve the contact between the electrode active material particles and the conductive material and to improve the contact between the electrode active material layer and the organic solid electrolyte membrane, thereby providing an all solid-state battery cell with improved ion conductivity and capacity realization.

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Daejeon, South Korea

Ji-Hoon Ryu