Lithiophilic Chemistry Facilitated Ultrathin Lithium for Scalable Prelithiation

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-02-05 DOI:10.1021/acs.nanolett.3c04885

Kuangyu Wang, Cheng Yang, Ruichuan Yuan, Fei Xu, Yingchuan Zhang, Tiezheng Ding, Maosheng Yu, Xinxiu Xu, Yuanzheng Long, Yulong Wu, Lei Li, Xiaoyan Li* and Hui Wu*,

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Abstract

Prelithiation plays a crucial role in advancing the development of high-energy-density batteries, and ultrathin lithium (UTL) has been proven to be a promising anode prelithiation reagent. However, there remains a need to explore an adjustable, efficient, and cost-effective method for manufacturing UTL. In this study, we introduce a method for producing UTL with adjustable thicknesses ranging from 1.5 to 10 μm through blade coating of molten lithium on poly(vinylidene fluoride)-modified copper current collectors. By employing the transfer-printing method, prelithiated graphite and Si–C composite electrodes are prepared, which exhibit significantly improved initial Coulombic efficiencies of 99.60% and 99.32% in half-cells, respectively. Moreover, the energy densities of Li(NiCoMn)_1/3O₂ and LiFePO₄ full cells assembled with the prelithiated graphite electrodes increase by 13.1% and 23.6%, respectively.

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亲锂化学促进超薄锂的可扩展预锂化

预锂化在推动高能量密度电池的发展中起着至关重要的作用，而超薄锂（UTL）已被证明是一种很有前途的正极预锂化试剂。然而，目前仍需要探索一种可调节、高效且成本效益高的UTL制造方法。在本研究中，我们介绍了一种通过在聚偏氟乙烯改性铜集流片上叶片涂层熔融锂来生产厚度可调（1.5 至 10 μm）UTL 的方法。通过采用转移印刷法，制备出了预石墨化和硅-碳复合电极，它们在半电池中的初始库仑效率显著提高，分别达到 99.60% 和 99.32%。此外，使用预石墨电极组装的 Li(NiCoMn)1/3O2 和 LiFePO4 全电池的能量密度分别提高了 13.1% 和 23.6%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.