Titles:
A kind of anode-free lithium metal battery anode current collector and preparation method and application thereof
一种无负极锂金属电池负极集流体及其制备方法和应用
Abstracts:
The present invention provides a negative electrode current collector for a non-negative electrode lithium metal battery and a preparation method and application thereof. The negative electrode current collector of the battery is the in-situ growth of lithiophilic nano-Cu2O on copper foil. Nano-Cu2O can significantly reduce the nucleation energy barrier of lithium metal and reduce the nucleation overpotential. At the same time, the Li2O generated by the reaction also exhibits lithophilicity and can also enhance SEI. It can better promote uniform deposition and inhibit dendrite growth.
Titles:
DEVICE FOR PRE-LITHIATING COMPRISING A CONSTANT TEMPERATURE BATH FOR CIRCULATING ELECTROLYTE
전해액 순환용 항온 수조를 포함하는 전리튬화 장치
Abstracts:
The present invention relates to a pre-lithiation apparatus, comprising: a pre-lithiation reactor in which an electrolyte is accommodated; a negative electrode wound in the form of a roll from the outside of the electrolyte, wound on the roll and running inside the electrolyte; Doedoe disposed in the electrolyte, at least one lithium metal counter electrode disposed to face the negative electrode traveling in the electrolyte in a spaced apart state by a predetermined distance; a charging/discharging unit circuitly connected to the negative electrode and the lithium metal counter electrode; and a constant temperature water tank for circulating the electrolyte in communication with the pre-lithiation tank; Including, the electrolyte contained in the pre-lithiation reaction tank is maintained at a constant temperature, concentration and purity while circulating between the pre-lithiation reaction tank and a constant temperature water tank for circulating the electrolyte.
본 발명은 전리튬화 장치에 관한 것으로, 내부에 전해액이 수용되는 전리튬화 반응조; 전해액 외부에서 롤 형태로 권취되어 있으며, 상기 롤에서 권취되어 전해액 내부를 주행하는 음극; 전해액 내에 배치되되, 전해액 내에서 주행하는 음극과 소정 간격 이격된 상태로 대면하도록 배치되는 적어도 한 개의 리튬 금속 대극; 음극 및 리튬 금속 대극에 회로적으로 연결되는 충방전부; 및 전리튬화 반응조와 연통된 전해액 순환용 항온 수조; 를 포함하며, 상기 전리튬화 반응조 내에 수용된 전해액은, 전리튬화 반응조와 전해액 순환용 항온 수조 사이에서 순환하면서 일정한 온도, 농도 및 순도로 유지된다.
Applicant:
LG ENERGY SOLUTION LTD [KR] (주식회사 엘지에너지솔루션)
Titles:
A lithium metal battery and a method for repairing the negative electrode of the lithium metal battery
一种锂金属电池和锂金属电池负极的修复方法
Abstracts:
The invention discloses a lithium metal battery and a method for repairing the negative electrode of the lithium metal battery. The lithium metal battery comprises a positive electrode sheet, a positive electrode tab, a negative electrode sheet, a negative electrode tab, a lithium metal foil, an auxiliary tab and a separator. , The negative electrode sheet and the lithium metal foil are separated by the diaphragm, the positive electrode tab is electrically connected to the positive electrode sheet, the negative electrode tab is electrically connected to the negative electrode sheet, and the auxiliary tab is electrically connected to the negative electrode sheet. The lithium metal foils are electrically connected. Through the introduction of lithium metal foil and auxiliary electrode, the auxiliary electrode is switched to be electrically connected to the positive electrode wiring when repair is required. Not only can the negative electrode be repaired by a suitable electrochemical method to eliminate dendrites, but also the damage to the positive electrode capacity can be avoided. Increase battery life.
