用于无树枝状突起锂金属负极的三维离子电子混合导电框架

IF 5.8 3区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nanoscale Pub Date : 2024-11-19 DOI:10.1039/d4nr04455j

Jinmin Lin, Zerui Chen, Wei Zhao, Junwei Han, Bo Chen, Yao Chen, Qianqian Liu, Hao Bin Wu

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引用次数: 0

摘要

为了实现锂金属电池的实际应用，解决锂金属阳极枝晶生长和体积膨胀的难题至关重要。三维框架为调节锂镀层/剥离过程提供了有效的解决方案。在这项工作中，我们通过在 Li0.5La0.5TiO3 (LLTO) 颗粒上保形涂覆碳纳米管（CNTs），提出了一种三维混合离子导电（MIEC）框架作为锂金属负极。LLTO 的亲锂性和 CNT 的高电子传导性之间的协同作用确保了锂的均匀沉积，并减轻了体积变化，从而提高了电化学性能。因此，LLTO@CNT 阳极在半电池中以 1 mA cm-2 的电流循环 400 次后，库仑效率高达 99.24%，同时还具有出色的循环稳定性和更长的使用寿命。

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3D mixed ion-electron conducting framework for dendrite-free lithium metal anode

To enable the practical application of lithium metal batteries, it is crucial to address the challenges of dendrite growth and volume expansion in lithium metal anodes. A 3D framework offers an effective solution to regulate the lithium plating/stripping process. In this work, we present a 3D mixed ion-electron conducting (MIEC) framework as a lithium metal anode, achieved by conformally coating carbon nanotubes (CNTs) onto Li0.5La0.5TiO3 (LLTO) particles. The synergy between LLTO’s lithiophilicity and CNTs' high electron conductivity ensures uniform lithium deposition and mitigates volume changes, thereby enhancing the electrochemical performance. As a result, the LLTO@CNT anode demonstrates a high Coulombic efficiency of 99.24% for 400 cycles at 1 mA cm−2 in a half-cell, along with. excellent cycling stability and prolonged lifespan.

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来源期刊

Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

12.10

自引率

3.00%

发文量

1628

审稿时长

1.6 months

期刊介绍： Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.