材料學院宋浩杰教授團隊在材料學國際頂級期刊《Advanced Materials》上發(fā)表最新成果

近日，我校材料科學與工程學院（文物保護科學與技術(shù)學院）碳基功能材料創(chuàng)新團隊在電化學儲能研究領(lǐng)域取得重要進展，相關(guān)研究成果以“Ultra-Sleek High Entropy Alloy Tights: Realizing Superior Cyclability for Anode-Free Battery”為題，發(fā)表于Wiley雜志社旗下的材料學國際頂級期刊《Advanced Materials》（IF=29.4）上。我校為論文第一通訊單位，碩士生王珺為第一作者，陜西科技大學王思哲副教授、宋浩杰教授和北京理工大學陳人杰教授分別為論文通訊作者。該工作的發(fā)表提高了我校在電化學儲能領(lǐng)域的國際影響力。

開發(fā)無鋰負極以抑制鋰枝晶形成并提供高能量密度的鋰電池一直備受矚目。然而，疏鋰界面和非均勻鋰沉積成為實際應用中的難題。在這項研究中，采用了熱力學驅(qū)動的相變方法來制備了一種20 nm超薄高熵合金（HEA-NiCdCuInZn）薄膜結(jié)構(gòu)。該高熵合金中不同組成元素之間的雞尾酒協(xié)同效應實現(xiàn)了多種鋰離子傳輸路徑和豐富的活性位點。這些具有梯度吸收能（-3.18~-2.03 eV）的活性位點有利于選擇性結(jié)合鋰離子，從而為均勻鋰成核提供低勢壘。同時，多個傳輸路徑促進了鋰離子的擴散行為和均勻的鋰沉積。基于此，對稱電池在60 mA cm^-2/60 mAh cm^-2的高負載下運行超過7200小時。此外，采用HEA/C負極和NCM-811正極材料組成的全電池在1C下的平均CE為99.5%。該負載HEA NPs的HEA層具有超薄、超致密、易于制備等優(yōu)點。這種超薄的HEA層為無枝晶負極提供了一種創(chuàng)新的親鋰材料體系，推動了高熵材料在先進電池中的應用并為進一步提升鋰電池性能具有指導意義。

附：團隊近三年電化學儲能方向的代表性論文：

[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

新聞小貼士：

碳基功能材料創(chuàng)新團隊現(xiàn)有教授2人和副教授5人。主要從事新型碳基納米復合材料的制備與應用研究。近年來，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等國際期刊發(fā)表100余篇高水平論文。指導學生先后獲“挑戰(zhàn)杯”大學生課外學術(shù)科技作品競賽大賽國家級銅獎、“互聯(lián)網(wǎng)+”大學生創(chuàng)新創(chuàng)業(yè)大賽國家級銅獎、光威杯中國復合材料學會大學生科技創(chuàng)新競賽二等獎等10余項科技創(chuàng)新獎勵。團隊具有良好的學術(shù)生態(tài)環(huán)境，始終秉承“開拓創(chuàng)新，合作共贏”的理念，并入選2023年陜西省高校青年創(chuàng)新團隊。

全文鏈接： https://onlinelibrary.wiley.com/doi/10.1002/adma.202308257

（核稿：王卓 編輯：劉倩）