CN105355958B - A kind of novel battery that more electrolyte structures are realized using micro-fluidic technologies - Google Patents

A kind of novel battery that more electrolyte structures are realized using micro-fluidic technologies Download PDF

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Publication number
CN105355958B
CN105355958B CN201510726819.0A CN201510726819A CN105355958B CN 105355958 B CN105355958 B CN 105355958B CN 201510726819 A CN201510726819 A CN 201510726819A CN 105355958 B CN105355958 B CN 105355958B
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China
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electrolyte
catholyte
bridge
anolyte
pipe
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CN201510726819.0A
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Chinese (zh)
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CN105355958A (en
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刘富德
郑大伟
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广州道动新能源有限公司
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general

Abstract

The present invention relates to cell art,More particularly to a kind of novel battery that more electrolyte structures are realized using micro-fluidic technologies,Including positive plate,Minus plate and the electrolyte in flow regime,The electrolyte includes anolyte,Catholyte and bridge electrolyte,Also include being respectively used to convey anolyte,The anode pipe of catholyte and bridge electrolyte flow,Cathode pipe and bridge-prevention pipe,The positive plate is connected with anode pipe and contacted with anolyte,The minus plate is connected with cathode pipe and contacted with catholyte,The positive plate,Minus plate respectively with anolyte,Catholyte contacts and electrochemical reaction occurs,The bridge electrolyte respectively with anolyte,The conduction ion of catholyte selectivity,Battery the moon is not only greatly expanded,The range of choice of anode material,And be advantageous to battery the moon,The electrochemical reaction of anode reaches optimum state simultaneously,Significantly improve its chemical property.

Description

A kind of novel battery that more electrolyte structures are realized using micro-fluidic technologies

Technical field

The present invention relates to cell art, and in particular to a kind of to realize the new of more electrolyte structures using micro-fluidic technologies Type battery.

Background technology

Battery (Battery) refer to fill electrolyte solution and metal electrode with produce the cup of electric current, groove or other containers or The segment space of clad vessel, chemical energy can be changed into the device of electric energy, utilize the battery as energy source, can be had There is burning voltage, stabling current, long-time stable power supply, by the electric current of ectocine very little, and battery structure is simple, carries Convenient, discharge and recharge is easy to operation, is not influenceed by outside climatic and temperature, stable and reliable for performance, in modern society's life In various aspects play have great role.

At present, the battery that in the market has been commercialized, such as lithium ion battery, lead-acid battery, nickel-zinc cell and metal-air Battery, mainly based on single electrolyte.But there are two big technical problems in the battery structure of single electrolyte:(1) due to battery Negative electrode, anode are inserted directly into same electrolyte, therefore cell cathode, anode material must be simultaneously simultaneous with single electrolyte Hold, when developing new battery, greatly limit the range of choice of cell cathode, anode material;(2) composition of single electrolyte and dense Degree it is difficult to ensure that during battery use the electrochemical reaction of negative electrode and anode simultaneously reach optimum state (maximum activity), it is unfavorable Its optimal chemical property is played in battery.

The content of the invention

The purpose of the present invention is to solve the shortcomings of the prior art provide one kind realizes more electrolyte using micro-fluidic technologies The novel battery of structure, has not only greatly expanded the range of choice of battery cathode and anode material, and is advantageous to battery yin, yang The electrochemical reaction of pole reaches optimum state simultaneously, significantly improves its chemical property.

The present invention is achieved through the following technical solutions the purpose:

A kind of novel battery that more electrolyte structures are realized using micro-fluidic technologies, including positive plate, minus plate and place In the electrolyte of flow regime, the electrolyte includes anolyte, catholyte and bridge electrolyte, in addition to difference It is described for conveying anolyte, the anode pipe of catholyte and bridge electrolyte flow, cathode pipe and bridge-prevention pipe Positive plate is connected with anode pipe and contacted with anolyte, and the minus plate is connected with cathode pipe and and catholyte Contact, the bridge-prevention pipe connect with anode pipe, cathode pipe and form ion biography respectively at corresponding to positive plate, minus plate Lead inner chamber.

Wherein, the anolyte, catholyte and bridge electrolyte flowing in ionic conduction inner chamber are identical.

Wherein, the anolyte, catholyte and bridge electrolyte are in laminar flow in ionic conduction inner chamber State.

Further, be provided with porous septum in the ionic conduction inner chamber, the porous septum be arranged at bridge-prevention pipe with Between anode pipe or/and between bridge-prevention pipe and cathode pipe.

Wherein, the positive plate is compatible with anolyte, and the minus plate is compatible with catholyte.

As preferable, the positive plate is zinc metal sheet, and the minus plate is air electrode (Gas Diffusion Electrode, GDE).

As preferable, the anolyte is KOH solution, and the catholyte is hydrochloric acid solution.

As it is further preferred that the concentration of the KOH solution is 1~6mol/L.

As it is further preferred that the concentration of the hydrochloric acid solution is 1~6mol/L.

As preferable scheme, the bridge electrolyte is 1~4mol/L Klorvess Liquid.

Relative to prior art, beneficial effects of the present invention are:The utilization micro-fluidic technologies of the present invention realize more electrolyte The novel battery of structure, including positive plate, minus plate and the electrolyte in flow regime, the electrolyte include anode electricity Liquid, catholyte and bridge electrolyte are solved, in addition to is respectively used to convey anolyte, catholyte and bridge electrolysis Liquid stream dynamic anode pipe, cathode pipe and bridge-prevention pipe, the positive plate are connected with anode pipe and contacted with anolyte, The minus plate is connected with cathode pipe and contacted with catholyte, and the bridge-prevention pipe is at corresponding to positive plate, minus plate Connected respectively with anode pipe, cathode pipe form an ionic conduction inner chamber, the positive plate, minus plate respectively with anode electrolysis Liquid, catholyte contact and electrochemical reaction occur, and the bridge electrolyte conducts with anolyte, catholyte respectively Ion, has not only greatly expanded the range of choice of battery cathode and anode material, and is advantageous to the electrochemistry of battery cathode and anode Reaction reaches optimum state simultaneously, significantly improves its chemical property.

Brief description of the drawings

Fig. 1 is the structural representation of the novel battery of the electrolyte structure of embodiment 1 three.

Fig. 2 is the structural representation of the novel battery of the electrolyte structure of embodiment 2 three.

In figure:1- positive plates, 2- minus plates, 3- anolytes, 4- catholytes, 5- bridge electrolyte, 6- it is porous every Film.

Embodiment

Below in conjunction with drawings and the specific embodiments, the present invention will be described in detail.

Embodiment 1.

As shown in figure 1, a kind of novel battery that three electrolyte structures are realized using micro-fluidic technologies of the present embodiment, including Positive plate 1, minus plate 2 and the electrolyte in flow regime, the electrolyte include anolyte 3, catholyte 4 And bridge electrolyte 5, in addition to be respectively used to convey the sun that anolyte 3, catholyte 4 and bridge electrolyte 5 flow Pole pipe road, cathode pipe and bridge-prevention pipe, the positive plate 1 are connected and contacted with anolyte 3, the negative electrode with anode pipe Plate 2 is connected with cathode pipe and contacted with catholyte 4, and the bridge-prevention pipe is distinguished corresponding at positive plate 1, minus plate 2 Connected with anode pipe, cathode pipe and form an ionic conduction inner chamber.

The positive plate 1, minus plate 2 of the present embodiment contact with anolyte 3, catholyte 4 and electrification occur respectively Learn reaction, the bridge electrolyte 5 respectively with anolyte 3, the conduction ion of the selectivity of catholyte 4, cell cathode and Anode material need not be simultaneously compatible with a kind of electrolyte, on the contrary, the minus plate 2 of the present embodiment only need to be simultaneous with catholyte 4 Hold, the positive plate 1 only need to be compatible with anolyte 3, so as to when developing new battery system, greatly widen negative electrode With the range of choice of anode material;Anolyte 3, the composition of catholyte 4 and concentration can be adjusted respectively to ensure electricity The pond electrochemical reaction that positive plate 1 and minus plate 2 participate in use reaches optimum state (maximum activity) simultaneously, so as to Significantly improve the chemical property of battery.

Wherein, the anolyte 3, catholyte 4 and bridge electrolyte 5 flow to phase in ionic conduction inner chamber Together, the anolyte 3, catholyte 4 and bridge electrolyte 5 are in stratified flow regime in ionic conduction inner chamber, are Guarantee electrolyte is in laminar condition without turbulent phenomenon occurs, and the stream of each electrolyte can be determined by the scope of reynolds number Re Dynamic speed, the flowing velocity of each electrolyte have the pump housing to be controlled.

Re=ρ vd/ μ

Wherein, v, ρ, μ are respectively flow velocity, density and the viscosity coefficient of electrolyte, and d is a characteristic length, such as electrolyte Circular pipe is flowed through, then d is the equivalent diameter of pipeline.

Wherein, in the three electrolyte structure batteries of the present embodiment, the size of the anode pipe, bridge-prevention pipe and cathode pipe It is identical, it is 3mm × 40mm × 1mm (length × width × height), the anolyte 3, bridge electrolyte 5 and catholyte 4 Flow velocity it is identical, be 0.065ml min-1

Wherein, the positive plate 1 is compatible with anolyte 3, and the minus plate 2 is compatible with catholyte 4, solves Prior art anode material, cathode material must simultaneously it is compatible with single electrolyte, caused by limit material select technology Problem.

As preferable, the positive plate 1 is zinc metal sheet, and the minus plate 2 is air electrode.

As preferable, the anolyte 3 is KOH solution, and the catholyte 4 is hydrochloric acid solution.

As it is further preferred that the concentration of the KOH solution is 1~6mol/L.

As it is further preferred that the concentration of the hydrochloric acid solution is 1~6mol/L.

As preferable scheme, the bridge electrolyte 5 is 1~4mol/L Klorvess Liquid.

Embodiment 2.

The present embodiment provides a kind of novel battery that four electrolyte or more electrolyte structure is realized using micro-fluidic technologies, The present embodiment and the difference of embodiment 1 are:Bridge-prevention pipe and the bridge electrolyte 5 may include multiple, the multiple bridge electrolyte 5 Collectively form the ion conduction channel between connection anolyte 3 and catholyte 4.

Other technical characteristics of the present embodiment are no longer repeated herein with embodiment 1.

Embodiment 3.

As shown in Fig. 2 the present embodiment is with the difference of embodiment 1:Porous septum is provided with the ionic conduction inner chamber 6, the porous septum 6 is arranged between bridge-prevention pipe and anode pipe or/and between bridge-prevention pipe and cathode pipe, it is described it is porous every Film 6 can not only prevent each electrolyte from forming turbulent phenomenon in ionic conduction inner chamber, ensure that each electrolyte contacts face is in layer Stream mode, and be advantageous to control the mixability between each electrolyte, improve the chemical property of battery.

Other technical characteristics of the present embodiment are no longer repeated herein with embodiment 1.

Embodiment 4, chemical property experiment

According to the scheme described in embodiment 1, positive plate 1 is from zinc metal sheet, minus plate 2 from air electrode, anolyte 3 The KOH solution for being 6mol/L from concentration, catholyte 4 select hydrochloric acid solution, bridge electrolyte 5 that concentration is 6mol/L to select 3mol/L Klorvess Liquid, electrolyte battery more than four is made respectively, as experimental group 1~4;According to the routine of prior art Scheme, anode are selected 6mol/L KOH solution from air electrode, electrolyte from zinc metal sheet, negative electrode, make four single electricity respectively Solve solution battery, as a control group 1~4, respectively to experimental group, compare the open-circuit voltage of Battery pack and peak power output is surveyed Amount, experimental measurements are as shown in table 1.

The experimental measurements of table 1

Battery Open-circuit voltage Peak power output Control group 1 1.50V 91mW cm-2 Control group 2 1.49V 90mW cm-2 Control group 3 1.50V 91mW cm-2 Control group 4 1.50V 91mW cm-2 Experimental group 1 2.17V 114mW cm-2 Experimental group 2 2.18V 115mW cm-2 Experimental group 3 2.18V 115mW cm-2 Experimental group 4 2.18V 115mW cm-2

From the measurement result of table 1:The open-circuit voltage and peak power output of more electrolyte batteries of the present invention are bright It is aobvious to be better than traditional single electrolyte battery, show that more electrolyte batteries of the present invention compare traditional single electrolyte battery, in electricity Have in chemical property and be obviously improved.

Embodiment described above only expresses some embodiments of the present invention, and its description is more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (4)

1. a kind of novel battery that more electrolyte structures are realized using micro-fluidic technologies, including positive plate, minus plate and it is in The electrolyte of flow regime, it is characterised in that:The electrolyte includes anolyte, catholyte and bridge electrolyte, Also include being respectively used to conveying anolyte, the anode pipe of catholyte and bridge electrolyte flow, cathode pipe and Bridge-prevention pipe, the positive plate are connected with anode pipe and contacted with anolyte, and the minus plate connects simultaneously with cathode pipe Contacted with catholyte, the bridge-prevention pipe connects with anode pipe, cathode pipe respectively at corresponding to positive plate, minus plate Form an ionic conduction inner chamber;
The anolyte, catholyte and bridge electrolyte flowing in ionic conduction inner chamber are identical;
The anolyte, catholyte and bridge electrolyte are in stratified flow regime in ionic conduction inner chamber;
And the flowing velocity of each electrolyte is determined by the scope of reynolds number Re:
Re=ρ vd/ μ
Wherein, v, ρ, μ are respectively flow velocity, density and the viscosity coefficient of electrolyte, and d is a characteristic length;
The positive plate is compatible with anolyte, and the minus plate is compatible with catholyte;The anolyte be 1~ 6mol/L KOH solution;The catholyte is 1~6mol/L hydrochloric acid solution;The bridge electrolyte is 1~4mol/L's Klorvess Liquid.
2. the novel battery according to claim 1 that more electrolyte structures are realized using micro-fluidic technologies, it is characterised in that: Be provided with porous septum in the ionic conduction inner chamber, the porous septum be arranged between bridge-prevention pipe and anode pipe or/and Between bridge-prevention pipe and cathode pipe.
3. the novel battery according to claim 1 that more electrolyte structures are realized using micro-fluidic technologies, it is characterised in that: The positive plate is zinc metal sheet.
4. the novel battery according to claim 1 that more electrolyte structures are realized using micro-fluidic technologies, it is characterised in that: The minus plate is air electrode.
CN201510726819.0A 2015-10-29 2015-10-29 A kind of novel battery that more electrolyte structures are realized using micro-fluidic technologies CN105355958B (en)

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PCT/CN2016/090965 WO2017071319A1 (en) 2015-10-29 2016-07-22 Battery utilizing microfluidic technique to realize multi-electrolyte structure

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CN105762396B (en) * 2016-03-03 2018-03-23 重庆大学 A kind of flat hot recycling ammonia battery using foam metal electrode
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Effective date of registration: 20181025

Address after: 511500 Guangdong Qingyuan high tech Zone, Chuang Road 6, A2 8, 801-1.

Patentee after: Qingyuan road mobile Mstar Technology Ltd

Address before: 510000 No. 31 Kefeng Road, Guangzhou High-tech Industrial Development Zone, Guangzhou, Guangdong Province

Patentee before: GUANGZHOU DAODONG NEW ENERGY CO., LTD.