Wu Yu, Nitou Modeste Venin Mendieev, Zhang Ziheng, Chen Daiqian, Yu Hesheng, Chen Yuanfu
School of Integrated Circuit Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, No.2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, China.
School of Integrated Circuit Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, No.2006, Xiyuan Ave, West Hi-Tech Zone, Chengdu 610054, China.
J Colloid Interface Sci. 2026 Jan 15;702(Pt 2):139035. doi: 10.1016/j.jcis.2025.139035. Epub 2025 Sep 15.
Lithium metal batteries (LMBs) offer great promise for next-generation high-energy density storage devices, yet their practical applications seriously hindered by dendritic lithium growth and unstable solid electrolyte interphase (SEI). To address these challenges, herein, we present a novel lithiophilic nickel boride embedded hollow carbon nanorods (NiB@HCR) as multifunctional interlayer for LMBs. The uniform distribution of lithiophilic NiB@HCR creates plentiful chemisorption sites, enabling efficient Li flux regulation and uniform deposition. It also facilitates the in-situ formation of stable LiF-rich SEI layer, which effectively suppressing dendrite growth. The lithiophilic feature and strengthened physical barrier can also enhance the electrolyte wettability and mechanical/thermal stability. Benefiting from these merits, the cells with NiB@HCR interlayers deliver outstanding electrochemical performances: the Li//Li cell delivers outstanding stability at 1 mA cm with 1 mAh cm over 1000 h; the Li//LiFePO cell with a 11 mg cm delivers a high reversible capacity of 111.7 mAh g at 1C over 200 cycles. This work contributes to providing new insight into the deliberate design, facile fabrication, and performance enhancement mechanisms of lithiophilic boride-based multifunctional interlayer for dendrite-free and stable LMBs.
锂金属电池（LMBs）为下一代高能量密度存储设备带来了巨大希望，但其实际应用受到锂枝晶生长和不稳定的固体电解质界面（SEI）的严重阻碍。为应对这些挑战，在此我们提出一种新型的亲锂硼化镍嵌入中空碳纳米棒（NiB@HCR）作为LMBs的多功能中间层。亲锂NiB@HCR的均匀分布创造了丰富的化学吸附位点，实现了有效的锂通量调节和均匀沉积。它还促进了富含LiF的稳定SEI层的原位形成，有效抑制了枝晶生长。亲锂特性和强化的物理屏障还可以提高电解质润湿性以及机械/热稳定性。受益于这些优点，具有NiB@HCR中间层的电池展现出出色的电化学性能：Li//Li电池在1 mA cm下1000小时内1 mAh cm时具有出色的稳定性；具有11 mg cm的Li//LiFePO电池在1C下200次循环中提供111.7 mAh g的高可逆容量。这项工作有助于为无枝晶且稳定的LMBs的亲锂硼化物基多功能中间层的精心设计、简便制造和性能增强机制提供新的见解。
