高稳定长循环Li-B-Zn合金负极的制备与性能评估

doi:10.19976/j.cnki.43-1448/TF.2025049

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Abstract Constructing a 3D skeleton inside lithium metal anodes can suppress anode volume change, reduce local current density, and retard lithium dendrite growth. In this study, Li ingots, amorphous B powder, and ZnF₂ powder were used as raw materials to prepare a Li-B-Zn alloy with internal 3D skeleton via a melting method. X-ray diffractometer, scanning electron microscope, and energy dispersive spectrometer were employed to characterize the phase composition and internal skeleton structure of the alloy, while the electrochemical performance of the Li-B-Zn alloy anode was evaluated. Results show that nano-sized LiZn particles are uniformly distributed on the LiB fiber skeleton, forming a composite skeleton with abundant lithiophilic sites and excellent structural stability. In symmetric cells, the Li-B-Zn anode achieves a long cycle life of 1 500 h at a high capacity of 5 mAh/cm². The Li-B-Zn|LFP (LiFePO₄) full cell exhibits outstanding electrochemical performance, with a capacity retention rate of up to 90.15% after 370 cycles at 1 C. Li-B-Zn alloy anode has significant performance advantages in practical applications, and constructing an internal composite 3D skeleton is an efficient approach to address current challenges of lithium metal anodes.

Key words： lithium-metal battery alloy anode 3D skeleton LiZn LiB

Received: 26 May 2025 Published: 06 January 2026

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	YANG Cheng
	WU Qiumei
	CHEN Libao
	WU Zhibin

Cite this article:

YANG Cheng,WU Qiumei,CHEN Libao, et al. Preparation and performance evaluation of highly stable and long-cycling Li-B-Zn alloy anode[J]. Materials Science and Engineering of Powder Metallurgy, 2025, 30(6): 537-543.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2025049 OR http://pmbjb.csu.edu.cn/EN/Y2025/V30/I6/537

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