Atomic Sn sites on nitrogen-doped carbon as a zincophilic and hydrophobic protection layer for stable Zn anodes

文献情報

出版日 2023-11-25

DOI 10.1039/D3TA06372K

インパクトファクター 12.732

著者

Yijie Wang, Yan Tan, Chuanwei Cheng

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要旨

Anodic dendrites and side reaction inhibition are crucial for high-performance, long-lifespan aqueous Zn-ion batteries. Herein, a multifunctional protection layer for stable zinc anodes, i.e., atomic Sn sites anchored on nitrogen-doped carbon supports (Sn NC), is reported. The Sn NC layer can guide Zn nucleation at a nano-level owing to rich atomic zincophilic sites and deliver an even electron distribution with facilitated charge transfer by conductive nitrogen-doped carbon (NC). A fast Zn2+ diffusion pathway is built owing to a gradient concentration field created by the hydrophobic/hydrophilic bi-layer configuration of porous Sn NC, leading to an oriented deposition within and at the surface of Sn NC. Accordingly, a surface-inside-interspace sequential deposition is achieved with a three-dimensional (3D) structured coating to ensure a smooth electrode surface in deep cycling. The hydrophobic surficial Sn–N–C layer further blocks water permeation to prevent hydrogen evolution. Therefore, an ultralow nucleation overpotential of 7.5 mV and a stable cycling performance (over 280 h@10 mA h cm−2) are achieved in symmetric cells. Both coin-type and pouch-type Zn//MnO2 full cells exhibit a high rate capability and superior long-term cycling performance. Our work presents a new insight into the design of interface engineering for robust metal anodes in advanced energy storage systems.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Atomic Sn sites on nitrogen-doped carbon as a zincophilic and hydrophobic protection layer for stable Zn anodes

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