Study of Molybdenum Disulfide as a Negative Electrode Additive for Stationary Flooded Lead Acid Batteries with Tubular Positive Plates. Issue 8 (26th February 2020)

• Record Type: Journal Article
• Authors: Arun, S.; Arul, C.; Mithin Kumar, S.; Venkat Kiran, Uday; Mayavan, Sundar
• Is Part Of: ChemistrySelect. Volume 5:Issue 8(2020)
• Page Start: 2469
• Page End: 2475
• Publication Date: 2020-02-26
• Subjects: Discharge capacity -- Endurance test -- MoS2 -- NAM -- Stationary application; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201904556
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Two dimensional layered molybdenum disulfide (MoS2 ) nanosheets possess great potential for lithium‐ion batteries, but their role in lead‐acid batteries (LAB) is not well known and documented. In this work, for the first time, full scale tubular positive flooded lead‐acid battery containing MoS2 in negative electrode was compared to control battery containing only carbon black for stationary/float application. Discharge capacity and an endurance test for 2000 h under constant current charging regime were investigated as per the Indian standard for testing stationary LAB (with tubular positive plate) in monobloc container (IS 13369 : 1992, reaffirmed in 2017). Inclusion of MoS2 does not negatively impact discharge capacity or endurance performance; instead, it improves these parameters 2–5 % over control battery. A significant drop in charging voltage is observed in the battery containing MoS2 throughout 2000 h of endurance testing. A battery containing MoS2 passes a similar current of 15 A at 15.2 V as control battery at 15.8 V. Battery containing MoS2, therefore, could be recharged at lower voltages than control batteries to reach identical Ah, thus delaying the onset of common failure mechanism, i. e., grid corrosion associated with high charging voltages. Abstract : Inclusion of MoS2 does not negatively impact the discharge capacity or endurance performance, instead improving these battery metrics by 2–5 % over control battery. Batteries infused with MoS2 requires less voltage to push same current as compared to control battery and address the needs of lead acid battery for float application. Batteries containing MoS2, therefore, could be recharged at lower voltages than control batteries to reach identical Ah‐in parameters more efficiently.