Novel high performance alkaline fuel cell

A fuel cell and battery technology, applied in the field of electrochemical energy storage, can solve problems such as the impossibility of large-scale promotion and use, and achieve the effects of overcoming the acidification of the electrolyte, good electrochemical performance, and reducing costs

Inactive Publication Date: 2007-01-24
FUDAN UNIV
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  • Application Information

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Problems solved by technology

The world's platinum production (about 40,000kg per year) can only be used to equip 100,

Method used

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  • Novel high performance alkaline fuel cell
  • Novel high performance alkaline fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Negative pole adopts AB 5 Type mixed rare earth hydrogen storage alloy MmNi 3.35 co 0.75 mn 0.4 al 0.3 : Negative electrode composition by: MmNi 3.35 co 0.75 mn 0.4 al 0.3 : Nickel powder: PTFE=80: 10: 10 by weight and mix it into a slurry, spread it on the foamed nickel mesh, and roll it to form a film. The cathode film uses manganese dioxide as a catalyst. Catalytic layer composition: MnO 2 : Activated carbon: binder=20:65:15 weight ratio mixed into a slurry, rolled into a film. Composition of the gas diffusion layer: acetylene black: binder = 60:40 mixed into a slurry, rolled into a film. The gas diffusion layer and the catalyst layer are sequentially pressed onto the foamed nickel mesh to form the positive electrode membrane. MmNi in the negative electrode 3.35 co 0.75 mn 0.4 al 0.3 The mass is: 200mg / cm 2 .The mass of manganese dioxide in the positive electrode is: 2mg / cm 2 .The electrolyte uses 200ml KOH, which contains 0.4g KBH 4 .at 5mA / cm 2 U...

Embodiment 2

[0032] Negative pole adopts AB 5 Type mixed rare earth hydrogen storage alloy MmNi 3.8 mn 0.55 co 0.6 Ti 0.05 , the positive electrode uses manganese dioxide as a catalyst. The rest is the same as in Example 1, and the steps and conditions in Example 1 are followed for slurry mixing, electrode coating and battery preparation. The solution uses 200ml KOH, which contains 0.4g KBH 4 .at 5mA / cm 2 Under the current density, the working voltage of the battery is 0.86V, and the capacity is 1497mAh (see Table 1 for details).

Embodiment 3

[0034] Negative pole adopts AB 2 Type zirconium alloy ZrCr 0.8 Ni 1.2 , the positive electrode uses manganese dioxide as a catalyst. The rest is the same as in Example 1, and the steps and conditions in Example 1 are followed for slurry mixing, electrode coating and battery preparation. The solution uses 200ml KOH, which contains 0.4g KBH 4 .at 5mA / cm 2 Under the current density, the working voltage of the battery is 0.85V, and the capacity is 1489mAh (see Table 1 for details).

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Abstract

This invention relates to a new high performance alkali fuel battery, in which, MnO is used as the catalyst of the positive, various kinds of stored alloys are used as the catalyst of th negative and an alkali solution (such as NaOH or KOH) containing a certain volume of hydrides (such as BNaH and BKH) as the electrolyte, during the work of a battery, a catalytic and reductive reaction happens to oxygen at the positive and hydrogen in the hydride is catalyzed and oxidated at the negative.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage, and in particular relates to a cheap, environment-friendly and high-performance alkaline fuel cell. Background technique [0002] With the continuous development of the economy, it will inevitably lead to the depletion of natural resources such as oil and coal, environmental pollution and the aggravation of the global greenhouse effect. Human beings must grasp the balance between the "three Es" of the trinity of economic growth, environmental protection and energy supply. Now the world's annual energy consumption converted into oil is about 8 billion tons, of which 90% are fossil fuels. According to the current consumption rate, it will be exhausted in about 100 to 200 years. The comprehensive and efficient development and utilization of new energy, energy-saving technology and environmental protection technology has become a very urgent topic. The development of electri...

Claims

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Application Information

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IPC IPC(8): H01M8/00H01M8/08H01M4/90H01M8/02H01M4/86
CPCY02E60/50
Inventor 夏永姚王永刚
Owner FUDAN UNIV
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