Cycle life and statistical predictive reliability model for all-solid-state thin film microbatteries

Grillon, Nathanaël; Bouyssou, E.; Jacques, Sébastien; Gautier, Gaël

doi:10.1016/j.microrel.2019.01.003

Cited by 4 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A direct simulation of such processes, which can take days, months and years of cycling in real time [ 59 , 60 , 61 ], exceeds the computationally accessible time scales by multiple orders of magnitude. We therefore adopt and adjust a recently introduced statistical sampling scheme by Türk et al [ 40 ] to assess possible (inter-)diffusion processes across interfaces in our simulations.…”

Section: Resultsmentioning

confidence: 99%

Exploiting Nanoscale Complexion in LATP Solid-State Electrolyte via Interfacial Mg2+ Doping

2022

View full text Add to dashboard Cite

While great effort has been focused on bulk material design for high-performance All Solid-State Batteries (ASSBs), solid-solid interfaces, which typically extend over a nanometer regime, have been identified to severely impact cell performance. Major challenges are Li dendrite penetration along the grain boundary network of the Solid-State Electrolyte (SSE) and reductive decomposition at the electrolyte/electrode interface. A naturally forming nanoscale complexion encapsulating ceramic Li1+xAlxTi2−x(PO4)3 (LATP) SSE grains has been shown to serve as a thin protective layer against such degradation mechanisms. To further exploit this feature, we study the interfacial doping of divalent Mg2+ into LATP grain boundaries. Molecular Dynamics simulations for a realistic atomistic model of the grain boundary reveal Mg2+ to be an eligible dopant candidate as it rarely passes through the complexion and thus does not degrade the bulk electrolyte performance. Tuning the interphase stoichiometry promotes the suppression of reductive degradation mechanisms by lowering the Ti4+ content while simultaneously increasing the local Li+ conductivity. The Mg2+ doping investigated in this work identifies a promising route towards active interfacial engineering at the nanoscale from a computational perspective.

show abstract

Section: Resultsmentioning

confidence: 99%

Exploiting Nanoscale Complexion in LATP Solid-State Electrolyte via Interfacial Mg2+ Doping

2022

View full text Add to dashboard Cite

show abstract

“…The cycle characteristics directly affect the service life of the battery. A series of changes occurs in the battery, such as interface side reactions, dendrite growth, element diffusion, impurity phase formation, cracking, or pulverization, because of the volume change of the electrode after multiple charge and discharge cycles [ 35 , 36 , 37 ]. The battery cycling performance was measured with and without a buffer layer at a constant current of 3 µA (charging and discharging current are both 3 μA) and a cycling potential range of 3.2 to 4.2 V.…”

Section: Resultsmentioning

confidence: 99%

Stabilization of Li0.33La0.55TiO3 Solid Electrolyte Interphase Layer and Enhancement of Cycling Performance of LiNi0.5Co0.3Mn0.2O2 Battery Cathode with Buffer Layer

Tan

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

All-solid-state batteries (ASSBs) are attractive for energy storage, mainly because introducing solid-state electrolytes significantly improves the battery performance in terms of safety, energy density, process compatibility, etc., compared with liquid electrolytes. However, the ionic conductivity of the solid-state electrolyte and the interface between the electrolyte and the electrode are two key factors that limit the performance of ASSBs. In this work, we investigated the structure of a Li0.33La0.55TiO3 (LLTO) thin-film solid electrolyte and the influence of different interfaces between LLTO electrolytes and electrodes on battery performance. The maximum ionic conductivity of the LLTO was 7.78 × 10−5 S/cm. Introducing a buffer layer could drastically improve the battery charging and discharging performance and cycle stability. Amorphous SiO2 allowed good physical contact with the electrode and the electrolyte, reduced the interface resistance, and improved the rate characteristics of the battery. The battery with the optimized interface could achieve 30C current output, and its capacity was 27.7% of the initial state after 1000 cycles. We achieved excellent performance and high stability by applying the dense amorphous SiO2 buffer layer, which indicates a promising strategy for the development of ASSBs.

show abstract

“…Battery ageing concerns under SBC operation hasn't been deeply investigated in this study due to timing constraints. Nervertheless, [17] suggests that spending time within high battery charging / discharging states (respectively high and low SoC) is a key contributor to battery ageing. Hence, using a 50% SoC biasing point seems to be a preventive action to counteract battery ageing.…”

Section: Discussionmentioning

confidence: 99%

Ultra-Low Frequency DC-DC Converters Using Switched Batteries

Perez

Berlitz

Moursy

et al. 2022

2022 IEEE Energy Conversion Congress and Exposition (ECCE)

View full text Add to dashboard Cite

To address ultra-low frequency DC-DC converters, we explore the concept of the switched battery converter. It is mainly derived from the switched capacitor converter topology replacing the flying capacitors by flying batteries. The best-inclass energy density of batteries compared to inductors and capacitors reduces drastically the operating frequency at low output power delivery while maintaining low output ripple. An experimental evaluation using mm 3 -scale off-the-shelf NiMH battery is described in this paper to present a first proof-ofconcept of switched-battery converter. The characterized 2:1 DC-DC converter achieves 25mW at 1.2V output voltage in 74mm 3 battery operating as low as 0.1 Hz operating frequency while maintaining less than 15% output voltage ripple without output filtering.

show abstract

Cycle life and statistical predictive reliability model for all-solid-state thin film microbatteries

Cited by 4 publications

References 34 publications

Exploiting Nanoscale Complexion in LATP Solid-State Electrolyte via Interfacial Mg2+ Doping

Exploiting Nanoscale Complexion in LATP Solid-State Electrolyte via Interfacial Mg2+ Doping

Stabilization of Li0.33La0.55TiO3 Solid Electrolyte Interphase Layer and Enhancement of Cycling Performance of LiNi0.5Co0.3Mn0.2O2 Battery Cathode with Buffer Layer

Ultra-Low Frequency DC-DC Converters Using Switched Batteries

Contact Info

Product

Resources

About