寻求合作
[供] 西班牙一个研究小组可提供一种酸碱性蓄电池生产技术
合作类型:技术     行业类别: 可再生能源     国家:西班牙
发布时间:2017年06月16日     过期时间:2020年03月12日     点击数:39

西班牙一个研究小组开发了一种低成本且环保的简单电能存储系统。该系统一可逆化学反应,溶液的初始酸碱度可以降低(获得电能-放电)或增加,从而提供电能(电荷)。该技术可用于可再生能源的电力储存,拟以技术合作的形式与感兴趣的合作伙伴进行合作。

 

 

A Spanish research group has developed a simple electric energy storage system employing low-cost and environmentally friendly reagents. Since the reactions are reversible the acidity and basicity of the starting solutions can be decreased (obtaining electric energy - discharge) or increased, providing electric energy (charge). This technology can be used for electric energy storage from renewable sources. Companies interested in licensing or technical cooperation agreements are sought.

 

 

Description

 

Current electric energy storage systems can be classified according to the type of energy used.  Systems using potential energy from electrical energy are the most widely used and can be classified in two main types: (i) supercapacitor systems and (ii) systems where electrical energy is stored in two reversible redox pairs.

 

The charge capacity of these systems is defined by the mass of the reagents employed. They can be represented by rechargeable batteries where reagents are static, such as: traditional lead-acid (L/A); nickel-cadmium system (Ni-Cd) and nickel metal hydride (Ni-MH), lithium-ion (Li-ion) or, redox flow batteries (RFB), in which solutions associated to redox pairs are pumped to negative and positive electrode as appropriate. The main drawbacks of these batteries are their high toxicity and cost.

 

A Spanish research group has developed a new acid-base electrochemical flow battery that uses hydrogen both as reactant and product. Thus, energy is stored or generated depending on whether the systems is used as a galvanic or as an electrolytic cell, respectively.  In this kind of charge-discharge energy storage systems, electrolytes are called positive electrolyte or posilyte and negative electrolyte or negalyte (solutions in contact with positive and negative electrodes, respectively).

 

The system is composed of acidic and alkaline solutions, both with a high supporting electrolyte concentration. The solutions employed are hydrochloric acid (HCl) and sodium hydroxide (NaOH) with sodium chloride (NaCl), which are cheap and environmentally friendly reagents. These solutions are separated by a proton exchange membrane, using hydrogen as both a reactant and a product. Under this configuration, neutralization energy is used as electromotive force. Figure 1 shows a diagram of the configuration of the electric energy storage system.

 

Figure 2 illustrates the processes taking place. During the charging process, a potential difference, mainly obtained from renewable energy sources, is applied between both electrodes and water (H2O) is reduced to hydrogen (H2) at the negative electrode, whereas hydronium ions (H+) are formed from hydrogen oxidation at the positive electrode. Both posilyte and negalyte solutions suffer and increase in acidity and alkalinity because of the ionic transport through the membrane, which is carried out by the supporting electrolyte. Thus, charge capacity is associated with final obtained values of hydronium or hydroxide activity. Interestingly enough, hydrogen is both produced and consumed so, during the charging process there is hydrogen self-supply.

 

On the other hand, energy can be obtained from the system during the discharging process. In alkaline medium hydrogen oxidation to water takes places at the negative electrode, while hydronium ions are reduced to hydrogen at the positive electrode (Figure 2). Moreover, as in the charging process, there is hydrogen self-supply and ionic transport through the membrane is kept by the supporting electrolyte.

 

This kind of pseudo-redox flow battery is comparable to other ones in which solutions associated to redox pairs are pumped to electrodes but these solutions are cheaper and safer than the other ones. Obviously, this incipient technology will be useful for electric energy storage from renewable sources, in the same way any other is. 

 

The research group is looking for companies interested in licensing the technology. However, they are also open to technical cooperation agreements through joint research and development projects with companies or R&D organizations to optimize this initial idea and/or to adapt this development to their needs for a future commercial exploitation of the patent.

 

Type and Role of Partner Sought:

 

- Type of partner sought: Companies and/or research organizations

- Specific area of activity of the partner: Electric energy generation and/or storage

- Task to be performed: development of a commercial prototype via license agreement or technical cooperation agreement (research and development project).

【供】170167 TOES20170405001
回复列表
1 / 共0页


发表回复:
请在下面登录后,才能发表回复
会员帐号: 密码: