ASTM International - ASTM D7129-09
Standard Test Method for Determination of Ammonia Trapping in a Grafted Battery Separator (Withdrawn 2015)
| Organization: | ASTM International |
| Publication Date: | 1 October 2009 |
| Status: | inactive |
| Page Count: | 3 |
| ICS Code (Galvanic cells and batteries in general): | 29.220.01 |
significance And Use:
Nickel metal hydride (Ni-MH) cells/batteries can exhibit high self-discharge rates. Nitrate impurities in the positive electrode can be reduced to ammonia on the negative electrode. This causes... View More
scope:
1.1 This test method covers the measurement of the ability of a material to capture ammonia.
1.2 This test method is intended primarily for testing grafted polyolefin materials used as a battery separator, although other materials could be tested.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Document History
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