近日，我校材料科學(xué)與工程學(xué)院（文物保護(hù)科學(xué)與技術(shù)學(xué)院）碳基功能材料創(chuàng)新團(tuán)隊(duì)在電化學(xué)儲(chǔ)能研究領(lǐng)域取得重要進(jìn)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(xué)國(guó)際頂級(jí)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(xué)王思哲副教授、宋浩杰教授和北京理工大學(xué)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(xué)儲(chǔ)能領(lǐng)域的國(guó)際影響力。
開發(fā)無(wú)鋰負(fù)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(shí)際應(yīng)用中的難題。在這項(xiàng)研究中，采用了熱力學(xué)驅(qū)動(dòng)的相變方法來(lái)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(yīng)實(shí)現(xiàn)了多種鋰離子傳輸路徑和豐富的活性位點(diǎn)。這些具有梯度吸收能（-3.18~-2.03 eV）的活性位點(diǎn)有利于選擇性結(jié)合鋰離子，從而為均勻鋰成核提供低勢(shì)壘。同時(shí)，多個(gè)傳輸路徑促進(jìn)了鋰離子的擴(kuò)散行為和均勻的鋰沉積?；诖?，對(duì)稱電池在60 mA cm-2/60 mAh cm-2的高負(fù)載下運(yùn)行超過7200小時(shí)。此外，采用HEA/C負(fù)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(fù)載HEA NPs的HEA層具有超薄、超致密、易于制備等優(yōu)點(diǎn)。這種超薄的HEA層為無(wú)枝晶負(fù)極提供了一種創(chuàng)新的親鋰材料體系，推動(dòng)了高熵材料在先進(jìn)電池中的應(yīng)用并為進(jìn)一步提升鋰電池性能具有指導(dǎo)意義。
附：團(tuán)隊(duì)近三年電化學(xué)儲(chǔ)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(tuán)隊(duì)現(xiàn)有教授2人和副教授5人。主要從事新型碳基納米復(fù)合材料的制備與應(yīng)用研究。近年來(lái)，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(guó)際期刊發(fā)表100余篇高水平論文。指導(dǎo)學(xué)生先后獲“挑戰(zhàn)杯”大學(xué)生課外學(xué)術(shù)科技作品競(jìng)賽大賽國(guó)家級(jí)銅獎(jiǎng)、“互聯(lián)網(wǎng)+”大學(xué)生創(chuàng)新創(chuàng)業(yè)大賽國(guó)家級(jí)銅獎(jiǎng)、光威杯中國(guó)復(fù)合材料學(xué)會(huì)大學(xué)生科技創(chuàng)新競(jìng)賽二等獎(jiǎng)等10余項(xiàng)科技創(chuàng)新獎(jiǎng)勵(lì)。團(tuán)隊(duì)具有良好的學(xué)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(tuán)隊(duì)。
全文鏈接： https://onlinelibrary.wiley.com/doi/10.1002/adma.202308257
（核稿：王卓 編輯：劉倩）
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