Capacity Enhancement in Quasi-Solid-State Lithium–Oxygen Batteries via Self-Constructing Li+ Transport Channels

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-04-05 DOI:10.1021/acs.nanolett.5c00870

Zehui Zhao, Xu Xiao, Zhuojun Zhang, Aijing Yan, Yasen Hao, Tenghui Qiu, Peng Tan

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Abstract

Lithium–oxygen batteries (LOBs) attract widespread attention due to their high energy density and safety. The morphology of the solid discharge product bears a close correlation with the battery capacity. In this work, the capacity of LOBs surprisingly increases from 790 mAh g^–1 under the liquid electrolyte to 2395 mAh g^–1 by using a quasi-solid-state electrolyte (QSSE). The thin film and spherical Li₂O₂ under the QSSE system construct new Li⁺ transport channels, which help to extend the solid-phase Li⁺ transport boundary to the entire electrode to enhance the spatial utilization efficiency of the electrode. Furthermore, a novel mechanism for the growth of Li₂O₂ is proposed, which is determined by the coupling of the conductivity of Li⁺ and electrons within the products and the electrode. The result innovatively reveals a new mechanism for the growth of discharge products and a new model of Li⁺ conduction in LOBs under QSSE systems.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.