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Method for generating hydrogen through lithium borohydride-porous carbon hydrolysis and reaction system

A technology of lithium borohydride and hydrolysis reaction is applied in the field of LiBH4 hydrolysis hydrogen production materials and hydrolysis reaction devices, which can solve the problems of high hydrogen generation speed and uncontrollable, and achieve the effects of beneficial performance, high hydrogen release efficiency and small volume.

Inactive Publication Date: 2012-09-26
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the rate of hydrogen gas generation is too fast to control

Method used

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  • Method for generating hydrogen through lithium borohydride-porous carbon hydrolysis and reaction system
  • Method for generating hydrogen through lithium borohydride-porous carbon hydrolysis and reaction system
  • Method for generating hydrogen through lithium borohydride-porous carbon hydrolysis and reaction system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 93wt%LiBH 4 and 7wt% single-walled carbon nanotubes, 0.1g in total, put into a ball mill jar, and ball mill for 30 minutes at a speed of 100rpm. After taking it out, put it into figure 1 In the hydrolysis reaction chamber of the hydrolysis reaction system, first open the gas outlet valve 4 to connect with the micro fuel cell, then open the water inlet valve 2, and inject 4.48 μL / min liquid water into the hydrolysis reaction chamber through the micro pump, the rate of hydrogen generated by the system is The temperature is 10ml / min, and the temperature of hydrogen is 95°C.

Embodiment 2

[0029] 93wt%LiBH 4 and 7wt% single-walled carbon nanotubes, 0.1g in total, put into a ball mill jar, and ball mill for 30 minutes at a speed of 150rpm. After taking it out, put it into figure 1 In the hydrolysis reaction chamber of the reaction system shown in the hydrolysis, first open the gas outlet valve 4 to connect with the micro fuel cell, then open the water inlet valve, inject 0.48ml / min liquid water into the device through the micro pump, the rate of hydrogen gas produced by the system is 100ml / min, and the temperature of hydrogen is 95°C.

Embodiment 3

[0031] 93wt%LiBH 4and a total of 0.7g of 7wt% carbon nanotubes, put into a ball mill jar, and ball mill for 60 minutes at a speed of 100rpm. After taking it out, put it into figure 1 In the hydrolysis reaction chamber of the reaction system shown, first open the outlet valve to connect with the micro fuel cell, then open the water inlet valve, inject 0.48ml / min liquid water into the device through the micro pump, and the rate of hydrogen generated by the system is 100ml / min, the temperature of hydrogen is 90°C.

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Abstract

The invention relates to a method for generating hydrogen through lithium borohydride-porous carbon hydrolysis, and a reaction system, which belongs to a hydrogen producing-storing technique for fuel cell hydrogen sources. The method is characterized in that hydrolysis material is prepared by mechanically ball-milling LiBH4 and porous carbon material, and the influent water rate of liquid water reacting with the hydrolysis material and the saturated steam pressure of steam are controlled so as to effectively control the hydrogen-releasing amount, hydrogen-releasing speed and the like of reaction. The method precisely combines hydrolysis hydrogen production with a hydrogen production system, and the hydrolysis hydrogen production system needs no catalyst for acceleration, can continuously and stably release hydrogen, and is convenient to control and higher in hydrogen-releasing efficiency than a NaBH4 hydrolysis hydrogen production system. The method completely meets the requirements of hydrogen fuel cells for hydrogen sources. The application of the technique of the invention has important and profound significance for promoting the progress of industries related to new energy, achieving the aim of saving energy and reducing emission and promoting economic development.

Description

technical field [0001] The invention relates to a method and a reaction system for generating hydrogen by hydrolysis of lithium borohydride-porous carbon, specifically a LiBH used as a hydrogen source for a micro-fuel cell 4 A hydrolysis hydrogen production material and a hydrolysis reaction device thereof belong to the hydrogen generation technology. Background technique [0002] In recent years, the state has put forward a strategic development plan for the active development and utilization of new energy, and increased financial and policy support for the new energy field, aiming to reduce greenhouse gas emissions, solve environmental problems, and at the same time deal with the energy crisis, realize economic and ecological development. Overall planning and coordinated development. One of the core technologies in the field of new energy: fuel cell technology has thus been developed rapidly. Fuel cells can be used not only as large-scale power sources, but also as small...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M8/06H01M8/0606
CPCY02E60/50
Inventor 翁百成李志林杨辉吴铸
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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