Chemo-mechanical challenges in solid-state batteries

Chemo-Mechanical Challenges in Solid-State Batteries

Solid-state batteries (SSBs) could exhibit improved safety and energy density compared with traditional lithium-ion systems, but fundamental challenges exist in integrating solid-state electrolytes with electrode materials. In particular, the

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About Chemo-mechanical challenges in solid-state batteries

Three chemo-mechanical issues present particular challenges for the Si anodes in SSBs.

In this work, we implement FBG sensors in solid-state batteries for operando monitoring the chemo-mechanical evolutions at electrolyte/electrolyte interface and provide an effective strategy for stable ASSLBs under low stack pressures.

Some of the key chemo-mechanical problems in SSBs involve dendrite growth through the solid-state electrolyte (SSE), interphase formation at the anode/SSE interface, and damage/decohesion of the various phases in the solid-state composite cathode.

The results demonstrate a general design strategy for solid-state sulfur cathodes, which simultaneously addresses chemical stability issues and chemo-mechanical challenges.

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6 FAQs about [Chemo-mechanical challenges in solid-state batteries]

Why do we need chemo-mechanical failure mechanisms in solid-state batteries?

Understanding these chemo-mechanical failure mechanisms of different anode architectures and the role of interphase formation helps to provide guidelines for the design of improved electrode materials. Solid-state batteries (SSBs) emerge as next-generation energy storage devices with high energy density and improved safety 1, 2, 3.

Can solid-state batteries overcome chemo-mechanical challenges?

Building on recent progress, overcoming chemo-mechanical challenges in solid-state batteries will require new in situ characterization methods and efforts to control evolution of interfaces. SSBs offer the potential for improved safety and energy density compared with lithium-ion (Li-ion) batteries.

What are chemo-mechanical problems in SSBs?

In this article we review the current state-of-the art modeling tools with a focus on chemo-mechanics. Some of the key chemo-mechanical problems in SSBs involve dendrite growth through the solid-state electrolyte (SSE), interphase formation at the anode/SSE interface, and damage/decohesion of the various phases in the solid-state composite cathode.

Are all-solid-state batteries chemo-mechanical?

Modeling the chemo-mechanical behavior of all-solid-state batteries: a review. Solid-state-batteries (SSBs) present a promising technology for next-generation batteries due to their superior properties including increased energy density, wider electrochemical window and safer electrolyte design.

What causes rapid capacity decay in Li-s battery?

Rapid capacity decay in Li-S solid-state batteries is widely reported and ascribed to chemo-mechanical failure. For the composite sulfur cathode using GPE electrolyte (GPE:S = 3 wt), the battery exhibited a low sulfur utilization (350 mAh g −1 at C/20).

Why are chemo-mechanics more important than conventional batteries?

Compared with conventional batteries having liquid electrolytes, chemo-mechanics plays a more prominent role due to rigid solid/solid contacts and often have fairly different mechanical properties of the cell components 4, 5.