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A high-efficiency, low-cost anti-carbon anode and its preparation method

An anti-carbon deposition and anode technology, applied in chemical instruments and methods, battery electrodes, inorganic chemistry, etc., can solve the problems of reduced battery output power, low melting point, and increased battery anode polarization resistance, and achieve improved battery performance and preparation Simple, simple process effect

Inactive Publication Date: 2015-11-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the melting point of Cu-based metals is low, and the electrocatalytic activity cannot meet the needs of medium-temperature SOFC, the polarization resistance of the anode of the battery increases, and the output power of the battery decreases. Performance and electrochemical activity of anode materials

Method used

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  • A high-efficiency, low-cost anti-carbon anode and its preparation method
  • A high-efficiency, low-cost anti-carbon anode and its preparation method
  • A high-efficiency, low-cost anti-carbon anode and its preparation method

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Embodiment 1

[0020] Select chemically pure n-butyl titanate (C 16 h 36 o 4 Ti) and analytically pure nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) is raw material, dissolves in water according to stoichiometric ratio 1:1 (molar ratio), adds ethylenediaminetetraacetic acid (EDTA) and citric acid as complexing agent, and the molar ratio of EDTA, citric acid and metal ion is 0.7:1 : 1. Slowly adjust the solution to weakly acidic pH = 7-8 with ammonia water, and stir at a constant speed to form a green clear solution. The prepared solution was placed in a crucible, heated and concentrated until the solution evaporated to dryness and began to burn into powder. The obtained powder was pre-fired in a muffle furnace at 800°C for 3 hours to remove organic matter. You can get NiTiO 3 Powder.

[0021] NiTiO 3 The powder is mixed with cornstarch at a mass ratio of 1:0.3 to be the anode powder. The battery was prepared by co-pressing and co-firing method. NiTiO 3 is the anode, Ce 0.8 SM...

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Abstract

The invention relates to a carbon deposition resistance anode and a preparation method thereof. The anode comprises a novel anode material having a chemical formula of NiTiO3, wherein the anode material can be decomposed into a Ni phase having a unique microstructure and a TiO2 phase under a reduction atmosphere. According to the preparation method, an improved Pechini method is adopted, tetrabutyl titanate and nickel nitrate are mixed according to a stoichiometric ratio, ethylenediaminetetraacetic acid (EDTA) and citric acid are adopted as complexing agents, uniform mixing is performed, the pH value is adjusted to 7-8, heating is performed until burning, and the obtained powder is pre-burned, then is subjected to tabletting forming, and is sintered to finally obtain the NiTiO3 anode material. The anode material has characteristics of good electrochemical property and carbon deposition resistance. The preparation method has characteristic of simple process and environmental-friendliness.

Description

technical field [0001] The invention belongs to the fields of new energy, material processing and electric power, and in particular relates to an anode of a solid oxide fuel cell (SOFC) with electrochemical activity and carbon deposition resistance and a preparation method thereof. Background technique [0002] Solid Oxide Fuel Cell (SOFC) is a new type of power generation device. Due to its high fuel energy conversion efficiency, low environmental pollution, strong fuel applicability and flexible design, it is known as the green energy of the 21st century. One of the most prominent advantages of SOFC is that it can directly use hydrocarbons (such as natural gas, methanol, propane) as fuel, which can solve the storage and transportation difficulties caused by hydrogen fuel. However, the traditional Ni-based ceramic anodes of SOFC (such as Ni-Zr 0.85 Y 0.15 o 2-δ and Ni-Ce 0.8 SM 0.2 o 2-δ ) has extremely high catalytic activity for the cracking reaction of hydrocarbons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/88C01G23/00
CPCY02E60/50
Inventor 彭冉冉陆亚林凌意瀚汪志全饶媛媛钟韡要夏晖
Owner UNIV OF SCI & TECH OF CHINA