# Discharge Rate‐Driven Li<sub>2</sub>O<sub>2</sub> Growth Exhibits Unconventional Morphology Trends in Solid‐State Li‐O<sub>2</sub> Batteries

https://mdr.nims.go.jp/datasets/3133c87d-56e9-488b-bfbf-a47124bab47f

## File

- [Angew Chem Int Ed - 2025 - Huang - Discharge Rate‐Driven Li2O2 Growth Exhibits Unconventional Morphology Trends in.pdf](https://mdr.nims.go.jp/filesets/6fe96a00-6832-4338-85f4-d306529de00d/download) ([Detail](https://mdr.nims.go.jp/filesets/6fe96a00-6832-4338-85f4-d306529de00d.md))

## Id

3133c87d-56e9-488b-bfbf-a47124bab47f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-23T00:31:56.184169Z

## Updated at

2025-09-24T03:30:27.483584Z

## Published at

2025-09-24T03:18:52.977715Z

## Doi



## First published url

https://doi.org/10.1002/anie.202507967

## Date published

2025-09-08

## Recorded date published

2025-9-8

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Discharge Rate‐Driven Li<sub>2</sub>O<sub>2</sub> Growth Exhibits Unconventional
    Morphology Trends in Solid‐State Li‐O<sub>2</sub> Batteries
  title_type: original
  lang: en

## Description

- description: 'Solid-state lithium oxygen batteries (LOBs) are known for their enhanced
    safety, higher electrochemical stability, and improved energy density compared
    to liquid-state LOBs. However, the investigation of solid-state LOBs is limited
    with little understanding of their discharge and charge processes. In this work,
    a polymer-based solid-state LOB is used to investigate the effect of discharge
    rate on lithium peroxide (Li2O2) formation, the oxygen evolution reaction (OER),
    and cycle performance. Notably, we observe a counterintuitive trend: Li2O2 particle
    size increases with increasing discharge current density, in contrast to liquid
    systems. This behavior arises from inherent space charge layers that restrict
    Li⁺ transport under high current, and spatially heterogeneous active sites at
    the solid electrolyte–cathode interface, directly evidenced by small angle X-ray
    scattering (SAXS), which govern nucleation accessibility and promote site-selective
    Li2O2 growth. Furthermore, higher current densities improve ORR and OER efficiency
    but accelerate anode degradation, while lower currents promote side reactions.
    These opposing effects result in a trade-off that defines an optimal discharge
    rate (0.1 mA cm⁻2) for maximizing cycle life. This study provides a new mechanistic
    perspective on discharge-driven processes in solid-state LOBs and offers practical
    guidelines for performance optimization in future high-energy battery systems.'
  description_type: abstract
  lang: und

## Creator

- name: Xiaozhou Huang
  role: author
- name: Matthew Li
  role: author
- name: Yanan Gao
  role: author
  orcid: https://orcid.org/0000-0003-0217-6512
- name: Moon Gyu Park
  role: author
- name: Shoichi Matsuda
  role: author
  orcid: https://orcid.org/0000-0002-0640-3404
- name: Khalil Amine
  role: author
  orcid: https://orcid.org/0000-0001-9206-3719

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: Solid-State Li-O2 Batteries
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Angewandte Chemie International Edition
  issn: '14337851'
  volume: '64'
  issue: '37'
  article_number: e202507967

## Conference



## Related item



## Funding

- funder_name: U.S. Department of Energy
- identifier: DE‐AC02‐06CH11357
  funder_name: Vehicle Technologies Office
- identifier: DE‐AC02‐06CH11357
  funder_name: Argonne National Laboratory

## Instrument



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## Fileset

- id: 6fe96a00-6832-4338-85f4-d306529de00d
  filename: Angew Chem Int Ed - 2025 - Huang - Discharge Rate‐Driven Li2O2 Growth
    Exhibits Unconventional Morphology Trends in.pdf
  content_type: application/pdf
  size: 3073990
  md5: 236add2fa91638af94ae8857c1f8b523

## Thumbnail

fileset_id: 6fe96a00-6832-4338-85f4-d306529de00d
filename: Angew Chem Int Ed - 2025 - Huang - Discharge Rate‐Driven Li2O2 Growth Exhibits
  Unconventional Morphology Trends in.pdf