biostudies-literatureUnknown4(6)Larson JMEnergy storage science calls for techniques to elucidate ion transport over a range of conditions and scales. We introduce a new technique, pascalammetry, in which stress is applied to a solid-state electrochemical device and induced faradaic current transients are measured and analyzed. Stress-step pascalammetry measurements are performed on operando microbattery probes (Li₂O/Li/W) and Si cathodes, revealing stress-assisted Li⁺ diffusion. We show how non-Cottrellian lithium diffusional kinetics indicates stress, a prelude to battery degradation. An analytical solution to a diffusion/activation equation describes this stress signature, with spatiotemporal characteristics distinct from Cottrell's classic solution for unstressed systems. These findings create an unprecedented opportunity for quantitative detection of stress in solid-state batteries through the current signature. Generally, pascalammetry offers a powerful new approach to study stress-related phenomena in any solid-state electrochemical system.Science advanceseaas8927https://www.ebi.ac.uk/biostudies/studies/S-EPMC5993470biostudies-literaturePascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries.PMC5993470Gillette EBurson KLarson JMWang YLee SBReutt-Robey JEfalsePascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries.Energy storage science calls for techniques to elucidate ion transport over a range of conditions and scales. We introduce a new technique, pascalammetry, in which stress is applied to a solid-state electrochemical device and induced faradaic current transients are measured and analyzed. Stress-step pascalammetry measurements are performed on operando microbattery probes (Li₂O/Li/W) and Si cathodes, revealing stress-assisted Li⁺ diffusion. We show how non-Cottrellian lithium diffusional kinetics indicates stress, a prelude to battery degradation. An analytical solution to a diffusion/activation equation describes this stress signature, with spatiotemporal characteristics distinct from Cottrell's classic solution for unstressed systems. These findings create an unprecedented opportunity for quantitative detection of stress in solid-state batteries through the current signature. Generally, pascalammetry offers a powerful new approach to study stress-related phenomena in any solid-state electrochemical system.2018-01-01T00:00:00Z2018 Jun2021-02-21T08:20:23Z2019-03-26T23:41:20ZS-EPMC59934702988832710.1126/sciadv.aas8927