GB/T 37204-2018 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 37204-2018 | English | 270 |
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Electrolyte for vanadium flow battery
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GB/T 37204-2018: Electrolyte for vanadium flow battery---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT37204-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.99
H 63
Electrolyte for vanadium flow battery
Issued on. DECEMBER 28, 2018
Implemented on. NOVEMBER 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Requirements... 4
4 Test methods... 6
5 Inspection rules... 8
6 Marks, packaging, transportation, storage and quality certificate... 9
7 Order sheet (or contract) content... 10
Annex A (Informative) Determination of vanadium ion content in vanadium electrolyte
... 11
Annex B (Informative) Determination of sulfate content in vanadium electrolyte... 15
Bibliography... 18
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by China Nonferrous Metals Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee on
Nonferrous Metals of Standardization Administration of China (SAC/TC 243).
The drafting organizations of this Standard. Dalian Borong New Materials Co., Ltd.,
Nonferrous Metals Technology and Economics Research Institute.
Main drafters of this Standard. Song Mingming, Chen Yanbo, Hao Yue, Zhang
Jiangfeng, Cong Lin, Bai Zhihui, Qiu Jinguo, Xu Sheng, Wang Fang, Liu Guochang,
Liu Yueju, Wang Hongbao.
Electrolyte for vanadium flow battery
1 Scope
This Standard specifies the requirements for electrolyte for vanadium flow battery, test
methods, inspection rules and marks, packaging, transportation, storage and the
contents of quality certificates and order sheets (or contracts).
This Standard applies to electrolyte for vanadium flow battery in sulfuric acid system.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB 190-2009, Packing symbol of dangerous goods
GB/T 6678, General principles for sampling chemical products
GB/T 6680, General rules for sampling liquid chemical products
GB/T 6908-2008, Analysis of water used in boiler and cooling system --
Determination of electrical conductivity
GB/T 10247-2008, Methods of viscosity measurement
GB/T 11901-1989, Water quality. Determination of suspended substance.
Gravimetric method
GB/T 19161-2016, Packaging containers -- Composite intermediate bulk container
3 Requirements
3.1 Product classification
The products are divided into three varieties according to the different valence states of
vanadium ions. 3-valent electrolyte, 3.5-valent electrolyte, and 4-valent electrolyte.
Each variety is divided into two levels based on impurity content. first-class products
and second-class products.
3.2 Main component content
The vanadium content, sulfate content, and ratio of vanadium ions in different valence
states in the product shall comply with the requirements in Table 1.
3.3 Impurity element content
The content of impurity elements in the product shall comply with the requirements in
Table 2.If the purchaser has other requirements for the impurity element content of the
product, please indicate it in the order sheet (or contract).
3.4 Additive
A certain number of additives are allowed to be added to the electrolyte. The type and
number of additives shall be specified in the order sheet (or contract). Report as actual
measured value.
3.5 Insoluble impurities
The product shall be free of insoluble impurities.
3.6 Physical properties
The supplier shall provide electrolyte conductivity and viscosity indicators in the
quality certificate and report them as actual measured values.
4 Test methods
4.1 Main component content
The analysis of vanadium content and the ratio of vanadium ions in different valence
Impurity element First-class product Not more than
Second-class product
4.2 Impurity element content
4.3 Additive
Additive analysis is carried out according to the supplier's current method. If there are
any objections, they will be resolved through negotiation between the supplier and the
purchaser.
4.4 Insoluble impurities
4.4.1 The detection of insoluble impurities is carried out in accordance with the relevant
regulations of GB/T 11901-1989.
4.5 Physical properties
4.5.1 The conductivity testing is carried out in accordance with the provisions of 7.3
and 7.5 in GB/T 6908-2008.
4.5.2 The viscosity is tested in accordance with the provisions of Chapter 2 of GB/T
10247-2008.Use the Ubbelohde viscometer specified in A.3 of Annex A of GB/T
10247-2008.Depending on the actual viscosity, select a viscometer with size 0C, 0B or
1 specified in Table A.3 in Annex A of GB/T 10247-2008 for measurement.
5 Inspection rules
5.1 Inspection and acceptance
5.1.1 The product shall be inspected by the supplier to ensure that the product quality
complies with the provisions of this Standard and the order sheet (or contract). A quality
certificate shall be filled out.
5.3 Inspection item
Before each batch of products leaves the factory, the main component content, impurity
element content, additive content, insoluble impurities, and physical properties shall be
inspected.
5.4 Sampling
5.4.1 To collect the samples for testing the main component content, impurity element
content, additive content and physical properties, determine the number of sampling
units in accordance with the provisions of GB/T 6678.
5.5 Judgment of inspection results
5.5.1 If the content of the main ingredients fails to pass the inspection, the batch of
products will be deemed to be unqualified.
5.5.2 If the impurity element content test fails, the batch of products will be deemed
unqualified.
5.5.3 If the test of insoluble impurities fails, the batch of products will be deemed
unqualified.
6 Marks, packaging, transportation, storage and quality certificate
6.1 Marks
The following marks (or labels) shall be printed on the outer packaging of the
electrolyte.
6.2 Packaging, transportation and storage
6.2.1 Products shall be stored in plastic containers that are resistant to sulfuric acid
corrosion. The volume meets the batch requirements. Seal with a sulfuric acid-resistant
plastic cap.
6.2.3 The transportation and storage temperature range of the product is. -15℃~40℃.
Avoid long-term direct sunlight.
6.2.4 When needed, nitrogen can be injected into the container as a protective gas.
6.3 Quality certificate
Each batch of products shall be accompanied by a product quality certificate, indicating.
7 Order sheet (or contract) content
The order sheet (or contract) for the materials listed in this Standard shall include the
following content.
Annex A
(Informative)
Determination of vanadium ion content in vanadium electrolyte
A.1 Scope
This appendix specifies the method for determination of vanadium ion content in
vanadium electrolyte. The measurement range of positive trivalent vanadium ion
content is 0.00 mol/L~2.50 mol/L. The measurement range of positive tetravalent
vanadium ion content is 0.00 mol/L~2.50 mol/L.
A.2 Principle
There are two adjacent valence states of vanadium ions in the electrolyte solution.
Based on the redox reaction between potassium permanganate and low-valent
vanadium, in a phosphate buffer solution, the electrolyte sample is titrated with a
standard titration solution of potassium permanganate, and the low-valent vanadium
ions are gradually oxidized until they are pentavalent. Each sudden jump in potential
corresponds to a change in the valence state of vanadium. According to the consumed
volume of potassium permanganate standard solution corresponding to the potential
jump point, calculate the content of vanadium ions in each valence state and total
vanadium.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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