Restraining Lattice Distortion of LiMn2O4 Facilitates Fluidic Electrochemical Lithium Extraction from Seawater

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2025-01-08 DOI:10.1021/acs.nanolett.4c04330

Yongtai Xu, Yixiang Li, Xiaoyu Zhao, Yifan Li, Xue Liang Li, Jing Wang, Hui Ying Yang

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Abstract

Reversible electrochemical extraction using cathode materials shows great potential for selective lithium extraction from low-concentration aqueous sources. However, ion selectivity and structural distortion challenges have limited its application to sources like seawater. Here, we synthesize Nb-modified LiMn₂O₄ using a simple wet chemistry coating method, introducing minimal structural defects in the LiMn₂O₄ materials and enhancing stability with a LiNbO₃ coating to limit lattice expansion. Additionally, operando XRD reveals reduced lattice distortion during Li⁺ intercalation/deintercalation. Electrochemical tests show that the composite achieves high stability (over 100 cycles), fast Li⁺ electrosorption, and robust ion selectivity. Furthermore, utilizing a fluidic electrochemical approach, we extract lithium from simulated seawater (3.5 ppm of Li⁺), achieving an absorption capacity of 13.8 mg g^–1 and an energy consumption of 9.96 Wh g^–1.

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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.