WO2017071320A1

WO2017071320A1 - Battery utilizing ion exchange membrane and microfluidic technique to realize multi-electrolyte structure

Info

Publication number: WO2017071320A1
Application number: PCT/CN2016/090966
Authority: WO
Inventors: 刘富德; 郑大伟
Original assignee: 广州道动新能源有限公司
Priority date: 2015-10-29
Filing date: 2016-07-22
Publication date: 2017-05-04
Also published as: CN105406154B; CN105406154A

Abstract

The invention relates to the technical field of batteries. Specially, the invention relates to a battery utilizing ion exchange membranes and a microfluidic technique to realize a multi-electrolyte structure, comprising: an anode plate; a cathode plate; electrolytes, wherein the electrolytes comprise an anode electrolyte, a cathode electrolyte, and a bridge electrolyte; and an anode channel, a cathode channel and a bridge channel for respectively transferring the flowing anode electrolyte, cathode electrolyte and bridge electrolyte. The anode plate is in communication with the anode channel and is in contact with the anode electrolyte. The cathode plate is in communication with the cathode channel and is in contact with the cathode electrolyte. The anode plate and the cathode plate are respectively in contact with the anode electrolyte and the cathode electrolyte to induce electrochemical reactions. The bridge electrolyte selectively conducts ions between itself and the anode electrolyte and between itself and the cathode electrolyte, respectively, thereby greatly expanding ranges of applicable cathode materials and anode materials for the battery, facilitating concurrent achievement of optimal electrochemical reactions at an anode and a cathode of the battery, and significantly improving electrochemical performance of the battery.

Description

Multi-electrolyte structure battery using ion exchange membrane and microfluidic technology

Technical field

The present invention relates to the field of battery technology, and in particular to a multi-electrolyte structure battery using an ion exchange membrane and a microfluidic technology.

Background technique

Battery refers to the space of a cup, tank or other container or composite container containing an electrolyte solution and a metal electrode to generate electric current. A device capable of converting chemical energy into electrical energy, and using the battery as a source of energy, can obtain a stable voltage. Stable current, stable power supply for a long time, small current affected by the outside world, and simple battery structure, easy to carry, easy to charge and discharge, free from external climate and temperature, stable and reliable performance, in modern social life All aspects play a big role.

At present, commercially available batteries, such as lithium ion batteries, lead-acid batteries, nickel-zinc batteries, and metal-air batteries, are mainly composed of a single electrolyte. However, there are two technical problems in the battery structure of a single electrolyte: (1) Since the cathode and the anode of the battery are directly inserted into the same electrolyte, the cathode and anode materials of the battery must be compatible with the single electrolyte at the same time, when developing a new battery. , greatly limits the choice of battery cathode and anode materials; (2) the composition and concentration of the single electrolyte is difficult to ensure that the electrochemical reaction of the cathode and anode during the use of the battery simultaneously achieves the best state (maximum activity), which is not conducive to the battery Give full play to its optimal electrochemical performance.

Summary of the invention

The object of the present invention is to provide a multi-electrolyte structure battery using ion exchange membrane and microfluidic technology for the deficiencies of the prior art, which not only greatly expands the selection range of the anode and anode materials of the battery, but also facilitates the battery cathode, The electrochemical reaction of the anode is simultaneously optimized to significantly improve its electrochemical performance.

The present invention achieves the object by the following technical solutions:

A multi-electrolyte structure battery using an ion exchange membrane and a microfluidic technology, comprising an anode plate, a cathode plate and an electrolyte in a flowing state, the electrolyte comprising an anolyte, a catholyte and a bridge electrolyte, and further comprising An anode pipe, a cathode pipe, and a bridge pipe for respectively conveying an anolyte, a catholyte, and a bridge electrolyte, wherein the anode plate is in communication with the anode pipe and is in contact with the anolyte, and the cathode plate is in communication with the cathode pipe and Catholyte contact,