Details

Autor(en) / Beteiligte

• Leonet, Olatz
• Colmenares, Luis C
• Kvasha, Andriy
• Oyarbide, Mikel
• Mainar, Aroa R
• Glossmann, Tobias
• Blázquez, J. Alberto
• Zhang, Zhengcheng

Titel

Improving the Safety of Lithium-Ion Battery via a Redox Shuttle Additive 2,5-Di-tert-butyl-1,4-bis(2-methoxyethoxy)benzene (DBBB)

Ist Teil von

• ACS applied materials & interfaces, 2018-03, Vol.10 (11), p.9216-9219

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 2,5-Di-tert-butyl-1,4-bis­(2-methoxyethoxy)­benzene (DBBB) is studied as a redox shuttle additive for overcharge protection for a 1.5 Ah graphite/C-LFP lithium-ion pouch cell for the first time. The electrochemical performance demonstrated that the protecting additive remains inert during the extended standard cycling for 4000 cycles. When a 100% overcharge is introduced in the charging protocol, the baseline cell fails rapidly during the first abusive event, whereas the cell containing DBBB additive withstands 700 overcharge cycles with 87% capacity retention and no gas evolution or cell swelling was observed. It is the first time the effectiveness of the DBBB as overcharge protection additive in a large pouch cell format is demonstrated.