近日，美高美集团4688am美高美集团4688am（文物保护科学与技术学院）碳基功能材料创新团队在电化学储能研究领域取得重要进展，相关研究成果以“Ultra-Sleek High Entropy Alloy Tights: Realizing Superior Cyclability for Anode-Free Battery”为题，发表于Wiley杂志社旗下的材料学国际顶级期刊《Advanced Materials》（IF=29.4）上。美高美集团4688am为论文第一通讯单位，硕士生王珺为第一作者，美高美集团4688am王思哲副教授、宋浩杰教授和北京理工大学陈人杰教授分别为论文通讯作者。该工作的发表提高了美高美集团4688am在电化学储能领域的国际影响力。
开发无锂负极以抑制锂枝晶形成并提供高能量密度的锂电池一直备受瞩目。然而，疏锂界面和非均匀锂沉积成为实际应用中的难题。在这项研究中，采用了热力学驱动的相变方法来制备了一种20 nm超薄高熵合金（HEA-NiCdCuInZn）薄膜结构。该高熵合金中不同组成元素之间的鸡尾酒协同效应实现了多种锂离子传输路径和丰富的活性位点。这些具有梯度吸收能（-3.18~-2.03 eV）的活性位点有利于选择性结合锂离子，从而为均匀锂成核提供低势垒。同时，多个传输路径促进了锂离子的扩散行为和均匀的锂沉积。基于此，对称电池在60 mA cm-2/60 mAh cm-2的高负载下运行超过7200小时。此外，采用HEA/C负极和NCM-811正极材料组成的全电池在1C下的平均CE为99.5%。该负载HEA NPs的HEA层具有超薄、超致密、易于制备等优点。这种超薄的HEA层为无枝晶负极提供了一种创新的亲锂材料体系，推动了高熵材料在先进电池中的应用并为进一步提升锂电池性能具有指导意义。
附：团队近三年电化学储能方向的代表性论文：
[1] Ultra-Sleek High Entropy Alloy Tights: Realizing Superior Cyclability for Anode-Free Battery, Advanced Materials, 2023, 2308257.
https://onlinelibrary.wiley.com/doi.org/10.1002/adma.202308257
[2] Insight into MoS2-MoN Heterostructure to Accelerate Polysulfide Conversion toward High-Energy-Density Lithium-Sulfur Batteries. Advanced Energy Materials, 2021, 11, 2003314.
https://onlinelibrary.wiley.com/doi/10.1002/aenm.202003314
[3] Transition Metal Compounds Family for Li-S Batteries: The DFT-Guide for Suppressing Polysulfides Shuttle. Advanced Functional Materials, 2023, 33, 202300825
https://onlinelibrary.wiley.com/doi/10.1002/adfm.202300825
[4] High-Entropy MXene as Bi-functional Mediator towards Advanced Li-S Full Batteries. ACS Nano, 2024, Accepted.
[5] Promoting Homogeneous Lithium Deposition by Facet-Specific Absorption of Coin3 for Dendrite-Free Lithium Metal Anodes. Nano Energy 2024, 119, 109093.
https://doi.org/10.1016/j.nanoen.2023.109093.
[6] Synergistic regulating of dynamic trajectory and lithiophilic nucleation by Heusler alloy for dendrite-free Li deposition. Energy Storage Materials, 2022, 50: 505.
[7] Immobilizing Polysulfide via Multiple Active Sites in W18O49 for Li-S batteries by Oxygen Vacancy Engineering. Energy Storage Materials, 2021, 43: 422.
https://10.1016/j.ensm.2021.09.020
[8] A Highly Ionic Transference Number Eutectogel Hybrid Electrolytes Based on Spontaneous Coupling Inhibitor for Solid-State Lithium Metal Batteries." Nano Research, 2023, 16(1), 1717-1725.
https://doi.org/10.1007/s12274-022-4759-7.
[9] Insight into Accelerating Polysulfides Redox Kinetics by BN@MXene Heterostructure for Li-S Batteries. Small, 2023, 19(38): 2302386.
https://doi.org/10.1002/smll.202302386.
[10] Insight into Dendrites Issue in All Solid‐State Batteries with Inorganic Electrolyte: Mechanism, Detection and Suppression Strategies." Small, 2024, 2308297.
https://doi.org/10.1002/smll.202308297
新闻小贴士：
碳基功能材料创新团队现有教授2人和副教授5人。主要从事新型碳基纳米复合材料的制备与应用研究。近年来，在Advanced Materials, Advanced Energy Materials, Advanced Functional Materials, ACS Nano, Nano Energy, Applied Catalysis B: Environmental, Energy Storage Materials, Small, Journal of Materials Chemistry A, Chemical Engineering Journal等国际期刊发表100余篇高水平论文。指导学生先后获“挑战杯”大学生课外学术科技作品竞赛大赛国家级铜奖、“互联网+”大学生创新创业大赛国家级铜奖、光威杯中国复合材料学会大学生科技创新竞赛二等奖等10余项科技创新奖励。团队具有良好的学术生态环境，始终秉承“开拓创新，合作共赢”的理念，并入选2023年陕西省高校青年创新团队。
全文链接： https://onlinelibrary.wiley.com/doi/10.1002/adma.202308257
