Impact of Bracing on Large Format Prismatic Lithium‐Ion Battery Cells during Aging (Adv. Energy Mater. 10/2022)

Daubinger, Philip; Schelter, M.; Petersohn, Ronny; Nagler, Felix; Hartmann, Sarah; Herrmann, Matthias; Giffin, Guinevere A.

doi:10.1002/aenm.202270039

Cited by 4 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ohmic resistances within the cell (R IR ) can be assigned to the high frequency intercept. The semicircle at high frequencies can be linked to the solid electrolyte interphase (R SEI ), while the semicircle at low frequencies can be attributed to the charge transfer resistance (R CT ) [13,54,56–61] . The values of the fits are summarized in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…The semicircle at high frequencies can be linked to the solid electrolyte interphase (R SEI ), while the semicircle at low frequencies can be attributed to the charge transfer resistance (R CT ). [13,54,[56][57][58][59][60][61] The values of the fits are summarized in Table 1. The uncoated NMC811 (pristine) and coated NMC811 (pristine) show very similar spectra, except for a small deviation in the second semicircle, which is assigned to the charge-transfer resistance.…”

Section: Cathode Post-mortem Analysismentioning

confidence: 99%

See 1 more Smart Citation

Influence of Phosphate Surface Coating on Performance of Aqueous‐Processed NMC811 Cathodes in 3 Ah Lithium‐Ion Cells

Nagler,

Christian,

Gronbach

et al. 2024

ChemElectroChem

View full text Add to dashboard Cite

Aqueous processing of state‐of‐the‐art cathode materials for lithium‐ion batteries like LiNi0.8Mn0.1Co0.1O2 (NMC811) has evolved as a more sustainable and cost‐effective alternative to the conventional 1‐methyl‐2‐pyrrolidone‐based process. However, the implementation of aqueous processing is challenging due to the water sensitivity of nickel‐rich layered oxides. This study investigates the influence of a phosphate‐based NMC811 surface coating on the performance of aqueous‐processed NMC811 cathodes in 3 Ah cells. The results show that the cells with phosphate‐coated NMC811 outperform those with uncoated NMC811, i. e., they exhibited higher initial capacity and improved capacity retention during cycling. Post‐mortem characterization techniques reveal that the phosphate coating limits the lithium loss during aqueous cathode manufacturing and further reduces side reactions during cycling, resulting in a smaller increase of cell impedance.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Cathode Post-mortem Analysismentioning

confidence: 99%

Influence of Phosphate Surface Coating on Performance of Aqueous‐Processed NMC811 Cathodes in 3 Ah Lithium‐Ion Cells

Nagler,

Christian,

Gronbach

et al. 2024

ChemElectroChem

View full text Add to dashboard Cite

show abstract

“…[ 125 ] At the application end, batteries are assembled under different mechanical constraints and initial external pressures. [ 126 ] Under conditions of unconstrained expansion or excessively low external pressure, the battery components may delaminate, severely reducing the battery's capacity. In contrast, excessive pressure could cause the separator pores to close and impede ion transport, resulting in high localized current densities and accelerating the cell's inhomogeneous degradation.…”

Section: Aging Mechanisms Of Libsmentioning

confidence: 99%

Accurate Model Parameter Identification to Boost Precise Aging Prediction of Lithium‐Ion Batteries: A Review

Ding,

Li,

Dai

et al. 2023

Advanced Energy Materials

View full text Add to dashboard Cite

Precise prediction of lithium‐ion cell level aging under various operating conditions is an imperative but challenging part of ensuring the quality performance of emerging applications such as electric vehicles and stationary energy storage systems. Accurate and real‐time battery‐aging prediction models, which require an exact understanding of the degradation mechanisms of battery components and materials, could in turn provide new insights for materials and battery basic research. Furthermore, the primary barrier to meaningful artificial intelligence/machine learning for accelerating the prediction period is the exploitation of accurate aging mechanistic descriptors. This review comprehensively summarizes the evolution of deterioration mechanisms at the material and cell level in different environments and usage scenarios, including the intricate relationships between aging mechanisms, degradation modes, and external influences, which are the cornerstones of modeling simulation and machine learning techniques. Recent advances in electrochemical models coupled with internal battery degradation mechanisms as well as identification and tracking of aging parameters are shown, with particular emphasis on electrode balance and the anticipated trend of machine learning‐assisted reliable remaining useful life prediction. Precise simulation prediction of cell level aging will continue to play an essential role in advanced smart battery research and management, enhancing its performance while shortening experimental sequences.

show abstract

“…Along with the importance of the internal mechanical properties on the lifetime of LIBs, the external mechanical conditions, e. g., bracing, also have a significant impact. An external mechanical pressure applied on the batteries can be beneficial as it, e. g., counteracts contact losses of electrodes with the separator [9–12] …”

Section: Introductionmentioning

confidence: 99%

Interplay between Elastic and Electrochemical Properties during Active Material Transitions and Aging of a Lithium‐Ion Battery

Feiler

Daubinger

Gold

et al. 2023

Batteries & Supercaps

View full text Add to dashboard Cite

The interplay between the internal mechanical properties and external mechanical conditions of a battery cell, e. g., Young's modulus and thickness change, has a crucial impact on the cell performance and lifetime, and thus, needs to be fully understood. In this work, 12 Ah lithium‐ion battery pouch cells were studied during cycling and aging by non‐invasive operando ultrasonic and dilation measurements. The effective Young's modulus increases and the thickness varies the most within a single cycle during the graphite transition from stage 1L to 4, at the beginning of the 2 to 1 stage transition and at the phase transition of the nickel‐rich NCM from H2 to H3. After 1000 cycles of aging, the overall effective Young's modulus of the lithium‐ion battery decreases by ∼11 %–12 % and the cell thickness increases irreversibly by ∼3 %–4 %, which is mostly related to a thicker and possibly softer, more porous solid electrolyte interphase layer.

show abstract

Impact of Bracing on Large Format Prismatic Lithium‐Ion Battery Cells during Aging (Adv. Energy Mater. 10/2022)

Cited by 4 publications

References 0 publications

Influence of Phosphate Surface Coating on Performance of Aqueous‐Processed NMC811 Cathodes in 3 Ah Lithium‐Ion Cells

Influence of Phosphate Surface Coating on Performance of Aqueous‐Processed NMC811 Cathodes in 3 Ah Lithium‐Ion Cells

Accurate Model Parameter Identification to Boost Precise Aging Prediction of Lithium‐Ion Batteries: A Review

Interplay between Elastic and Electrochemical Properties during Active Material Transitions and Aging of a Lithium‐Ion Battery

Contact Info

Product

Resources

About