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学者姓名：蔡小强
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Abstract ：
The full potential realization of aqueous Zn metal-based batteries (AZMBs) is contingent upon Zn anode stability. Modifying zincophilic protective layers can significantly enhance the Zn anode performance by reducing dendrite formation and minimizing side reactions. Principles for screening and designing zinophilic interfaces remain undeveloped. Here, a low-coordination atom (LCA) design to guide the protective layer construction for Zn anodes is proposed. Oxygen vacancies are introduced in Zn2Ti3O8 (ZTOx) to reduce the coordination numbers of Ti and Zn atoms, thereby altering the electronic densities near the Fermi level of ZTOx to facilitate favorable interactions with Zn2+ ions. Experimental and theoretical findings demonstrate enhanced zincophilic sites and charge-reinforced interfaces resulting from the LCA design. Leveraging Zn anode interfacial chemistry regulation, the Zn@ZTOx electrodes present exceptionally planar Zn deposition. The weakened adsorption between H and ZTOx effectively prohibits side reactions. This results in Zn@ZTOx-based symmetric cells achieving outstanding cycling performance, with a cumulative plating capacity of 8 Ah cm-2 at 10 mA cm-2. The full cell, coupled with an NH4V4O10 cathode, sustains a high specific capacity of 221.6 mAh g-1 after 3000 cycles. The LCA strategy thus expands the range of potential protective materials for Zn anodes and underscores their practicability for AZMB applications.
Keyword ：
aqueous Zn metal-based batteries aqueous Zn metal-based batteries electronic structure manipulation electronic structure manipulation low-coordination atom design low-coordination atom design zincophilicity zincophilicity Zn anodes Zn anodes
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| GB/T 7714 | Chen, Yuhan , Lyu, Fucong , Guan, Zhizi et al. Engineering Low-Coordination Atoms into Zn2Ti3O8 for Stable Zn Metal Anodes [J]. | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
| MLA | Chen, Yuhan et al. "Engineering Low-Coordination Atoms into Zn2Ti3O8 for Stable Zn Metal Anodes" . | ADVANCED FUNCTIONAL MATERIALS (2025) . |
| APA | Chen, Yuhan , Lyu, Fucong , Guan, Zhizi , Zhou, Lin , Xie, Youneng , Long, Yunchen et al. Engineering Low-Coordination Atoms into Zn2Ti3O8 for Stable Zn Metal Anodes . | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
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Abstract ：
The initial behavior of multi-principal element alloys (MPEAs) is crucial to understanding their deformation mechanism. However, its orientation dependence remains poorly understood. The initial plastic behavior of three typical crystal planes (100), (110) and (111) of FeNiCr MPEA was investigated by nanoindentation experiments, molecular dynamics (MD) simulations and density functional theory (DFT) calculations. Our novel findings reveal that the initial plastic behavior of FeNiCr MPEA is highly orientation-dependent. Specifically, the (111) plane has the highest initial yield load, and (110) plane exhibits the smallest width of displacement burst. This is related to the number of activated slip systems and the evolution behavior of dislocation structure under different crystal orientations. These differences would not lead to different incipient mechanisms and activation volumes. For the first time, MD simulations not only clarify that the dislocation nucleation load is the decisive factor for the initial yield load but also disclose that the incipient behavior of (111) orientation is more sensitive to the lattice distortion (LD). In addition, DFT results unravel that intrinsic LD promotes dislocation nucleation by triggering heterogeneous distribution of charge density. Finally, the orientation dependence of incipient behavior in FCC FeNiCr MPEA shares similarities with conventional metals and other FCC MPEAs, but differs from BCC MPEAs due to their distinct slip systems. The key findings of this paper deepen our understanding of the incipient behavior of MPEAs. © 2025 Elsevier Ltd
Keyword ：
Crystal lattices Crystal lattices Crystal orientation Crystal orientation Ternary alloys Ternary alloys
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| GB/T 7714 | Zhang, X.K. , Fan, J.T. , Xiang, H.L. et al. Unveiling the critical role of crystal orientation in the incipient behavior of FCC FeNiCr multi-principal element alloy [J]. | International Journal of Mechanical Sciences , 2025 , 297-298 . |
| MLA | Zhang, X.K. et al. "Unveiling the critical role of crystal orientation in the incipient behavior of FCC FeNiCr multi-principal element alloy" . | International Journal of Mechanical Sciences 297-298 (2025) . |
| APA | Zhang, X.K. , Fan, J.T. , Xiang, H.L. , Yan, J. , Li, W.P. , Zhao, W. et al. Unveiling the critical role of crystal orientation in the incipient behavior of FCC FeNiCr multi-principal element alloy . | International Journal of Mechanical Sciences , 2025 , 297-298 . |
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The commercial feasibility of lithium-sulfur (Li-S) batteries is still hindered by three long-standing problems: substantial volumetric expansion of sulfur cathodes during cycling, serious polysulfide shuttle phenomenon, and sluggish redox kinetics. Addressing these limitations through innovative material engineering, this study presents a sustainable approach by developing a novel aqueous multifunctional binder (designated AG-DAA) derived from aloe vera gel crosslinked with d-aspartic acid. The rationally designed AG-DAA binder demonstrates dual functionality to overcome existing barriers. Mechanically, its superior elastic modulus (1.2 GPa) and tensile strength (156 MPa) enable effective accommodation of sulfur cathode volume fluctuations, thereby maintaining structural integrity throughout extended cycling. Chemically, the abundant polar functional groups (-COOH, -OH) facilitate three critical interactions: (1) enhanced Li+ transport through enhanced lithium affinity, (2) strong chemisorption of lithium polysulfides via Lewis acid-base interaction, and (3) catalytic acceleration of sulfur redox reactions. As a result, the AG-DAA based cathode achieves an initial specific capacity of 1130.8 mA h g-1 at 0.5C, maintaining 600.3 mA h g-1 after 500 cycles with a coulombic efficiency exceeding 98.7%. Remarkably, under high-rate conditions (4C), the system demonstrates exceptional stability with capacity retention of 51.3% after 1000 cycles, corresponding to an ultralow cycle degradation rate of 0.049% per cycle representing a 20% improvement over conventional PVDF binders. This investigation establishes a paradigm for eco-friendly binder engineering in Li-S battery systems, demonstrating that rational design of functionalized natural polymers can simultaneously address multiple electrochemical challenges.
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| GB/T 7714 | Wang, Qian , Liu, Shasha , Liang, Feifan et al. A novel aqueous aspartic acid modified biomass binder for high-performance Li-S batteries [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2025 , 13 (36) : 30254-30264 . |
| MLA | Wang, Qian et al. "A novel aqueous aspartic acid modified biomass binder for high-performance Li-S batteries" . | JOURNAL OF MATERIALS CHEMISTRY A 13 . 36 (2025) : 30254-30264 . |
| APA | Wang, Qian , Liu, Shasha , Liang, Feifan , Wang, Ruiqi , Cai, Xiaoqiang , Wang, Ya-Xiong et al. A novel aqueous aspartic acid modified biomass binder for high-performance Li-S batteries . | JOURNAL OF MATERIALS CHEMISTRY A , 2025 , 13 (36) , 30254-30264 . |
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Lithium-sulfur (Li-S) batteries offer ultra-high theoretical energy density (2600 Wh kg(-)(1)) but face commercialization hurdles from polysulfide shuttling and sulfur flammability. A multifunctional biomass-derived binder by modifying aloevera gel (AG) with phytic acid (PA) is designed for addressing these two issues. The AG-PA binder provides strong mechanical integrity for the sulfur cathode and features N-, O-, and P-rich polar groups that chemically anchor lithium polysulfides (LiPSs) and accelerate Li+ deposition. This enhances LiPSs redox kinetics and suppresses shuttling. Consequently, AG-PA-based Li-S cells deliver a high initial capacity of 776.1 mAh g(-)(1) and retain 527.0 mAh g(-)(1) at 4 C (1 C = 1675 mA g-1) after 1000 cycles (ultralow decay: 0.032% per cycle). Crucially, during combustion, heat decomposes AG-PA's phosphorus groups, generating phosphoric acid and water vapor that form a physical barrier isolating oxygen/heat. Simultaneously, PO radicals scavenge H/HO radicals, quenching chain reactions. This dual-action significantly enhances safety. This work establishes a scalable biomass engineering approach to concurrently boost energy density, cyclability, and safety in Li-S batteries, bridging gaps towards practical deployment.
Keyword ：
binder binder eco-friendly eco-friendly energy storage energy storage flame-retardant flame-retardant Li-S batteries Li-S batteries polysulfides polysulfides
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| GB/T 7714 | Liu, Shasha , Ma, Shuang , Feng, Pingxian et al. Aloe-Derived Sustainable, Aqueous and Flame Retardant Binder Toward High-Performance Li-S Batteries [J]. | ADVANCED ENERGY MATERIALS , 2025 , 15 (32) . |
| MLA | Liu, Shasha et al. "Aloe-Derived Sustainable, Aqueous and Flame Retardant Binder Toward High-Performance Li-S Batteries" . | ADVANCED ENERGY MATERIALS 15 . 32 (2025) . |
| APA | Liu, Shasha , Ma, Shuang , Feng, Pingxian , Liang, Feifan , Cai, Xiaoqiang , Wang, Ya-Xiong et al. Aloe-Derived Sustainable, Aqueous and Flame Retardant Binder Toward High-Performance Li-S Batteries . | ADVANCED ENERGY MATERIALS , 2025 , 15 (32) . |
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The highly reversible plating/stripping of Zn is plagued by dendrite growth and side reactions on metallic Zn anodes, retarding the commercial application of aqueous Zn-ion batteries. Herein, a distinctive nano dual-phase diamond (NDPD) comprised of an amorphous-crystalline heterostructure is developed to regulate Zn deposition and mechanically block dendrite growth. The rich amorphous-crystalline heterointerfaces in the NDPD endow modified Zn anodes with enhanced Zn affinity and result in homogeneous nucleation. In addition, the unparalleled hardness of the NDPD effectively overcomes the high growth stress of dendrites and mechanically impedes their proliferation. Moreover, the hydrophobic surfaces of the NDPD facilitate the desolvation of hydrate Zn2+ and prevent water-mediated side reactions. Consequently, the Zn@NDPD presents an ultrastable lifespan exceeding 3200 h at 5 mA cm(-2) and 1 mAh cm(-2). The practical application potential of Zn@NDPD is further demonstrated in full cells. This work exhibits the great significance of a chemical-mechanical synergistic anode modification strategy in constructing high-performance aqueous Zn-ion batteries.
Keyword ：
amorphous-crystalline heterostructure amorphous-crystalline heterostructure aqueous batteries aqueous batteries mechanical and chemicalsynergism mechanical and chemicalsynergism nano dual-phase diamond nano dual-phase diamond Zn dendrites Zn dendrites
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| GB/T 7714 | Chen, Yuhan , Yin, Jianan , Zhang, Yaqin et al. Coupling High Hardness and Zn Affinity in Amorphous-Crystalline Diamond for Stable Zn Metal Anodes [J]. | ACS NANO , 2024 , 18 (22) : 14403-14413 . |
| MLA | Chen, Yuhan et al. "Coupling High Hardness and Zn Affinity in Amorphous-Crystalline Diamond for Stable Zn Metal Anodes" . | ACS NANO 18 . 22 (2024) : 14403-14413 . |
| APA | Chen, Yuhan , Yin, Jianan , Zhang, Yaqin , Lyu, Fucong , Qin, Bin , Zhou, Jingwen et al. Coupling High Hardness and Zn Affinity in Amorphous-Crystalline Diamond for Stable Zn Metal Anodes . | ACS NANO , 2024 , 18 (22) , 14403-14413 . |
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