Interfacial Molecule Engineering Builds Tri-Functional Bilayer Silane Films with Hydrophobic Ion Channels for Highly Stable Zn Metal Anode

被引：0

作者：

Yan, Chang ^{[1
]}

He, Fangzhou ^{[2
]}

Feng, Lukun ^{[3
]}

Zhu, Ling ^{[1
]}

Li, Peng ^{[1
]}

Tang, Jing ^{[1
]}

He, Huibing ^{[1
]}

Liu, Yi ^{[4
]}

Zhu, Yuanqin ^{[1
]}

Li, Guanghua ^{[1
]}

Li, Dongdong ^{[1
]}

机构：

[1] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Electrochem Energy Mat, 100 Daxue Rd, Nanning 530004, Peoples R China

[2] FinDreams Battery Co Ltd, 17 Jiangnan Rd, Nanning 530032, Peoples R China

[3] Shenzhen Univ, Inst Low Dimens Mat Genome Initiat, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China

[4] Xinjiang Tech Inst Phys & Chem CAS, State Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, 40-1 South Beijing Rd, Urumqi 830011, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2025年

基金：

中国国家自然科学基金;

关键词：

artificial interface layer; silane coupling agent; stable zinc anode; zinc ion batteries; DEPOSITION; INTERPHASE;

D O I：

10.1002/adfm.202503493

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The vulnerable Zn electrode interface with uncontrolled Zn dendrite growth and severe parasitic side reactions constrains the practical application of aqueous zinc-ion batteries (AZIBs). General interface engineering of Zn offers a promising approach to relieve these issues but is limited by the confined functionality, low affinity, and additional weight of the protective layer. In this study, a bilayer silane film (SF) is developed with hydrophobic, ion-buffering, and strong interfacial adhesion properties through the precise assembly of silane coupling agents. The well-designed SF layer enables Zn2+ to undergo continuous processes, including being captured by -CF3 groups, followed in sequence by inducing desolvation, directed diffusing through silane nanochannels, and buffered diffusion. This multiple process contributed to the accelerated [Zn(H2O)6]2+ desolvation, stabilized Zn2+ transport, and inhibited side reactions. Consequently, dendrite-free and highly reversible SF@Zn anodes are realized, exhibiting an ultra-long lifetime (more than 4300 h), a high Coulombic efficiency (CE) (99.1% after 2600 cycles), and a superior full cell capacity retention (83.2% after 1000 cycles). This innovative strategy provides a novel method to enhance Zn anode stability via molecular-level interfacial layer design by multicomponent silane coupling reaction, offering new insights into the advanced interface design for AZIBs.

引用

页数：13