Talk:Self-discharge

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I dont know about lower temperatures lowering discharge, whenever I forget my cell phone in the car overnight in the winter the phone is almost always dead in the morning. Crd721 06:01, 18 October 2007 (UTC)

that's because operating temperature also affects the battery; and your phone continues to consume charge at the lower temperature, even if it's only a trickle. -- 99.233.186.4 (talk) 17:16, 24 February 2010 (UTC)

Chemical effects slow down at lower temperature, and battery self-discharge is a chemical reaction. However, at very cold temperatures your phone battery does not perform well for the same reason. See the reference: Battery performance characteristics, MPower UK, 23 February 2007. Information on self-discharge characteristics of battery types--96.244.247.130 (talk) 01:24, 19 July 2011 (UTC)

Capacitors also self-discharge

Capacitors also have a self-discharge rate, not just batteries. This is cited in the article about supercapacitors, although is relevant to all capacitors - they cannot store charge indefinitely. However, their discharge can be caused by leakage current and effects other than chemical. --96.244.247.130 (talk) 01:19, 19 July 2011 (UTC)

Mistake with secondary lithium

I thought the 2-3% per year looked wrong and followed the source, it seems like there was a mistake when typing so I corrected it. First edit so thought i should mention it here. Please delete this comment if not longer neccesary 152.78.97.197 (talk) 20:22, 7 May 2015 (UTC)

Non-Battery Energy Storage Self Discharge

I have been researching energy storage and whatnot, and the term is used for things like Flywheel Energy Storage , Compressed-Air Energy Storage , Cryogenic Energy Storage etc, is it appropriate to add those to this page, if so how should i go about this?

Missing info on self-discharge prevention via PET tape substitution

Please add info on/from these two studies to the article once you or somebody clarified the issue described below. They're featured in 2023 in science like so:

• In two studies (20 & 23 Jan), researchers report that substitution of PET adhesive tapes could nearly prevent self-discharge in the widely used lithium-ion batteries, extending battery life.

The issues to clarify is that it seems like two weight percent vinylene carbonate is already commonly used and that it seems unclear to what extent it would reduce or prevent self-discharge. The added content should be very accurate and somebody other than me should add it if it's notable (I think it is).

Relevant quotes from the studies (1) and the news reports (2,3):

The addition of two weight percent vinylene carbonate can prevent redox shuttle generation and leads to almost zero reversible self-discharge. "Since the PET in the tape is the culprit that creates the redox shuttle, we need to replace it with a polymer that is more stable and does not decompose in the harsh chemistry of a lithium-ion battery," Metzger and Adamson told CTVNews.ca. "So far, the results look very promising, and we plan to publish a new research paper on improved polymers for lithium-ion battery tapes soon." So, it shuttles between the electrodes and that creates the self-discharge, just like lithium is supposed to do. [...] "One of the engineers said, 'I heard you guys found out something is wrong with PET tape.' So, I explained to him that it's causing this self-discharge and asked him, 'What are you using in your cells?' He said, 'PET tape.'"

The info may also be relevant to other article/s like the two linked or Research in lithium-ion batteries.

References

Prototyperspective (talk) 20:15, 8 March 2023 (UTC)