Progress in Natural Science: Materials International最新文献_第7页

Investigation on the thermal stability, crystallization kinetics and magnetic properties of Fe-Si-B-P-C-Nb amorphous alloys Fe-Si-B-P-C-Nb非晶合金的热稳定性、结晶动力学和磁性能研究

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.010

Yifan He, Rui Sun, Zilong Xu, Jingjing Huang, Songwei Wang, Chengying Tang

This study examines the thermal stability, isothermal and non-isothermal crystallization kinetics, and soft magnetic properties of Fe-Si-B-P-C-Nb amorphous alloys. Phase transformations were analyzed using X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Under non-isothermal conditions, activation energies, local activation energies and local Avrami exponents were calculated to investigate nucleation and growth mechanisms during crystallization. The results indicate that characteristic temperatures vary with the heating rate, while activation energy values confirm the superior thermal stability of the Fe_82.8Si_0.2B₁₂P_2.25C_2.25Nb_0.5 alloy. During crystallization, local activation energy initially increases before reaching a peak and subsequently decreasing. The local Avrami exponent further suggests that crystallization in both amorphous ribbons is predominantly governed by three-dimensional growth with fluctuating nucleation rates. Additionally, the isothermal crystallization kinetics of the Fe_82.8Si_0.2B₁₂P_2.25C_2.25Nb_0.5 amorphous ribbon were analyzed to deepen our understanding of the crystallization mechanisms and provide theoretical insights for optimizing material properties. By fine-tuning annealing parameters, the crystallization behavior can be controlled to achieve different crystallized volume fractions, thereby developing nanocrystalline materials with enhanced soft magnetic properties. Specifically, the saturation magnetization flux density (B_s) reached 1.79 T, while the coercivity (H_c) was as low as 5.2 A/m.

本研究考察了Fe-Si-B-P-C-Nb非晶合金的热稳定性、等温和非等温结晶动力学以及软磁性能。用x射线衍射（XRD）和差示扫描量热法（DSC）分析了相变。在非等温条件下，计算了活化能、局部活化能和局部Avrami指数，研究了结晶过程中的成核和生长机制。结果表明：Fe82.8Si0.2B12P2.25C2.25Nb0.5合金的特征温度随升温速率的变化而变化；结晶过程中，局部活化能先增大后达到峰值，随后减小。局部Avrami指数进一步表明，两种非晶带的结晶主要受三维生长和波动成核速率的控制。此外，还分析了Fe82.8Si0.2B12P2.25C2.25Nb0.5非晶带的等温结晶动力学，以加深对结晶机理的理解，并为优化材料性能提供理论见解。通过微调退火参数，可以控制结晶行为，获得不同的结晶体积分数，从而开发出软磁性能增强的纳米晶材料。饱和磁化磁通密度（Bs）达到1.79 T，矫顽力（Hc）低至5.2 A/m。

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引用次数: 0

Li-Cu alloy with A preferred single crystal orientation (110) plane for inhibiting dendrite growth in anode-free lithium metal batteries 具有优选单晶取向（110）平面的Li-Cu合金，用于抑制无阳极锂金属电池中的枝晶生长

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.011

Peisong Sun , Zhiyu Ding , Zhiqiang Li , Xin Li , Hua Cheng , Yuxiang Guo , Dawei Luo

A formidable challenge to enhance the cycle performance of Anode-Free Lithium Metal Batteries (AFLMBs) is to suppress the uncontrollable growth of Li dendrites. Preferred orientation is an effective solution to induce Li⁺ uniform deposition, however, there is a dearth of adjustment methods in anode-free lithium metal batteries. Herein, a lithium-copper (LiCu_x) alloy current collector was obtained, in which the lithium metal deposition on the current collector was aligned with the (110) single crystal plane, thereby facilitating the formation of dendrite free lithium deposits. The experimental results show that low-temperature alloying followed by an annealing treatment enables stable alloying of Li and Cu and induces the formation of (110) crystal plane. Consequently, the LiCu_x-250 alloy exhibits a stable lithium deposition/stripping more than 1100 h with a high Coulombic efficiency (98.42 %). Furthermore, the cycling performance of the LiFePO₄ full cell is markedly enhanced in comparison to that of bare copper. This work provides an important reference for solving the problem of lithium dendrites in anode-free lithium metal batteries.

提高无阳极锂金属电池（aflmb）循环性能的一个巨大挑战是抑制锂枝晶的不可控生长。优选取向是诱导Li+均匀沉积的有效解决方案，但在无阳极锂金属电池中缺乏调节方法。本文制备了一种锂铜（LiCux）合金集流器，其中集流器上的金属锂沉积与（110）单晶平面对齐，从而有利于无枝晶锂沉积的形成。实验结果表明，低温合金化后再进行退火处理可以使Li和Cu稳定合金化，并诱导（110）晶面的形成。结果表明，LiCux-250合金在1100 h以上表现出稳定的锂沉积/溶出，库仑效率高达98.42%。此外，与裸铜电池相比，LiFePO4电池的循环性能得到了显著提高。该工作为解决无阳极锂金属电池中锂枝晶问题提供了重要参考。

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引用次数: 0

Preparation of gold mesh transparent electrodes by femtosecond laser ablation 飞秒激光烧蚀法制备金网透明电极

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.02.013

Zifeng Zhang, Bing Xu, Qilu Ye

Metal transparent electrodes with high transmissivity and high conductivity are used extensively in multiple fields, including photovoltaic cells, light-emitting diode and touch panels. The development of femtosecond laser processing technology, which has lower manufacturing cost and better processing quality, provides a brand-new program for the fabrication of metal transparent electrodes. Herein, the gold mesh transparent electrodes are prepared by the femtosecond laser ablation technology. We conducted comprehensive tests to evaluate their optical and electrothermal properties. The results demonstrated the effectiveness of these electrodes, leading to their successful application in touch panel technology.

具有高透过率和高导电性的金属透明电极广泛应用于光伏电池、发光二极管和触摸屏等多个领域。飞秒激光加工技术的发展为金属透明电极的制造提供了一种全新的方案，其制造成本更低，加工质量更高。本文采用飞秒激光烧蚀技术制备了金网透明电极。我们进行了全面的测试，以评估其光学和电热性能。结果证明了这些电极的有效性，导致它们在触摸面板技术中的成功应用。

引用次数: 0

Machine learning-assisted optimization of element ratios in high-entropy alloys for hydrogen evolution reaction 机器学习辅助下的高熵合金析氢反应元素比优化

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.05.001

Zijun Yang , Qi Yin , Zexiang Yin , Yingmei Bian , Heng Zhao , Beijia Chen , Yuan Liu , Yang Wang , Yida Deng , Haozhi Wang

As high-entropy alloys (HEAs) are widely applied in energy conversion and catalysis, efficiently and accurately designing HEAs with excellent catalytic performance has become a key challenge in research. Traditional HEAs design methods rely mainly on experience and extensive experiments, which are low in efficiency and high in cost. To overcome these challenges, density functional theory (DFT) calculations and machine learning (ML) methods have gradually been applied to the performance prediction and design of HEAs. We propose the “Differentiated Feature” method to train high-precision Light Gradient Boosting Machine (LGBM) models to predict the catalytic performance of Fe_aCo_bNicCu_dMo_e HEAs (0.18 < a, b, c, d, e < 0.23, a+b + c + d + e = 1) in the hydrogen evolution reaction (HER). By combining DFT calculation results with machine learning models, we successfully identify Fe_0.222Co_0.185Ni_0.185Cu_0.203Mo_0.203 HEAs with the best HER performance. Comparing the prediction results with experimental and DFT calculation data further validates the effectiveness of this method in predicting HER performance. This study provides new insights into the design of HEAs and accelerates the development of high-performance HEAs.

随着高熵合金在能量转化和催化领域的广泛应用，高效、准确地设计具有优异催化性能的高熵合金已成为研究的关键课题。传统的HEAs设计方法主要依靠经验和大量的实验，效率低，成本高。为了克服这些挑战，密度泛函理论（DFT）计算和机器学习（ML）方法已逐渐应用于HEAs的性能预测和设计。我们提出了“差分特征”方法来训练高精度的光梯度增强机（LGBM）模型来预测FeaCobNicCudMoe HEAs (0.18 <；a, b, c, d, e <；0.23, a+b + c + d + e = 1)的析氢反应（HER）。将DFT计算结果与机器学习模型相结合，成功识别出HER性能最佳的Fe0.222Co0.185Ni0.185Cu0.203Mo0.203 HEAs。将预测结果与实验数据和DFT计算数据进行比较，进一步验证了该方法预测HER性能的有效性。该研究为高性能HEAs的设计提供了新的思路，加速了高性能HEAs的发展。

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引用次数: 0

Orientation-dependent deformation and pop-in behavior in 3C-SiC 3C-SiC的取向依赖性变形和弹出行为

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.003

Junquan Huang , Zihao Lin , Yujun Chen , Song Zhao , Tianye Jin , Junyun Chen , Hui Li , Anmin Nie , Yongjun Tian

Understanding the relationship between crystal orientation and deformation behavior is critical for optimizing the mechanical performance of 3C-SiC in advanced applications. Here, the effect of crystal orientation on elasto-plastic deformation behavior in 3C-SiC was systematically studied using nanoindentation experiments, high-resolution transmission electron microscopy (HRTEM), and molecular dynamics (MD) simulations. Pop-in events were experimentally observed on both the (001) and (111) crystallographic planes, with the (111) plane exhibiting a higher critical pop-in load than the (001) plane. Nanoindentation tests further revealed that the (111) plane has a higher elastic modulus and nanohardness compared to the (001) plane. HRTEM analysis showed that the pop-in behavior is primarily governed by dislocation slip activity. Dislocation slip on the {111} slip plane was observed beneath the indentation for both orientations, while additional dislocation slip on the {001} slip plane, characteristic of edge dislocations, was noted for the (111) plane. MD simulations confirmed similar dislocation activity and revealed amorphization in regions of high stress concentration. Amorphization was further shown to occur within shear band zones in both crystallographic planes.

了解晶体取向与变形行为之间的关系对于优化3C-SiC在高级应用中的机械性能至关重要。本文采用纳米压痕实验、高分辨率透射电子显微镜（HRTEM）和分子动力学（MD）模拟，系统研究了晶体取向对3C-SiC弹塑性变形行为的影响。在（001）和（111）晶体平面上都观察到了弹出事件，（111）平面比（001）平面表现出更高的临界弹出载荷。纳米压痕试验进一步表明，（111）平面比（001）平面具有更高的弹性模量和纳米硬度。HRTEM分析表明，弹出行为主要受位错滑动活动控制。在两个方向的压痕下都观察到{111}滑移面上的位错滑移，而在（111）平面上观察到{001}滑移面上额外的位错滑移，具有边缘位错的特征。MD模拟证实了类似的位错活动，并揭示了高应力集中区域的非晶化。非晶化进一步显示在两个晶体平面的剪切带区域内发生。

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引用次数: 0

Enhanced broadband near-infrared luminescence via phase engineering of Cr3+-doped crystals 通过相位工程增强Cr3+掺杂晶体的宽带近红外发光

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.009

Shuaiyu Liu , Xiaoya Cui , Ke Su , Xin Pan , Yujia Wang , Lan Yao , Qiaoling Li , Lefu Mei

As near-infrared spectroscopy technology is increasingly applied in fields such as biomedicine, food detection, and night vision, the demand for efficient near-infrared light sources is growing rapidly. However, traditional light sources, such as tungsten-halogen lamps and supercontinuum lasers, are hindered by low energy efficiency and bulky designs, limiting their suitability for advanced optical applications. Fluoride-based materials have attracted attention due to their low phonon energy and excellent optical transparency, making them promising candidates for next-generation light sources. Herein, cryolite-structured fluorides were synthesized to investigate their potential as efficient near-infrared emitters. Micron-sized Na₃Sc_1-xF₆: xCr³⁺ and K_yNa_3-yScF₆: 6 %Cr³⁺ crystals were prepared via a hydrothermal method. The influence of Cr³⁺ doping concentration and K⁺ substitution on crystal structure and luminescent performance were systematically explored. Cr³⁺ doping was found to induce lattice contraction and stabilize an octahedral crystal field, resulting in broadband near-infrared emission. Additionally, K⁺ substitution induces a phase transition, further enhancing luminescence and significantly extending fluorescence lifetimes. This work reveals the coupled effects of dopant concentration and structural modification in optimizing luminescent behavior. These findings provide valuable insights and theoretical guidance for the rational design and development of efficient near-infrared LED light sources, addressing essential challenges in advanced optical techniques.

随着近红外光谱技术在生物医药、食品检测、夜视等领域的应用越来越广泛，对高效近红外光源的需求也在迅速增长。然而，传统光源，如钨卤灯和超连续介质激光器，受到低能量效率和笨重设计的阻碍，限制了它们在先进光学应用中的适用性。氟化物基材料由于其低声子能量和优异的光学透明度而引起人们的关注，使其成为下一代光源的有希望的候选者。本文合成了冰晶石结构的氟化物，以研究其作为高效近红外发射器的潜力。采用水热法制备了微米级的Na3Sc1-xF6: xCr3+和KyNa3-yScF6: 6% Cr3+晶体。系统探讨了Cr3+掺杂浓度和K+取代对晶体结构和发光性能的影响。发现Cr3+掺杂可以诱导晶格收缩并稳定八面体晶体场，从而产生宽带近红外发射。此外，K+取代诱导了相变，进一步增强了发光并显着延长了荧光寿命。这项工作揭示了掺杂浓度和结构修饰在优化发光行为中的耦合效应。这些发现为合理设计和开发高效的近红外LED光源提供了有价值的见解和理论指导，解决了先进光学技术中的基本挑战。

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引用次数: 0

MXene-carbon quantum dot hybrid memristor with progressive conductance tuning for artificial synaptic application 用于人工突触的渐进式电导调谐mxene -碳量子点混合忆阻器

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.001

Chunyan Shi , Yixiang Li , Zheng Xu , Shijie Chen , Xinli Cheng , Xiaojia Shi , Fangchao Li , Hai Chi , Cheng Zhang , Jahangeer Ahmed , Chunlan Ma , Wei Tian , Yang Li

MXenes are emerging two-dimensional (2D) nanomaterials comprising multiple atomic layers of transition metal carbides/nitrides/carbonitrides. However, due to the metallic analogous conductivity, their intrinsic application in electronic devices is restricted. In this work, it is discovered that the straightforward surface modification of MXene holds promise for extending its functionality into the semiconductor field. The zero-dimensional carbon quantum dots (0D-CDs) are designed and adopted to allow the surface modification of MXene. The uniformly distributed CDs are introduced to function as charge storage elements, thereby enhancing charge transport process, reducing power consumption, and improving stability of MXene-based electronics. Notably, the CDs-modified MXene memristor exhibits outstanding bidirectional tunable memristive performance and replicates synaptic plasticity behavior, which facilitates the development of electronic synapses. This study unveils the potential of applying MXene for high-performance memristors through CDs modulation strategy, and provides an effective pathway for expanding the metallic conductive 2D nanomaterials into non-volatile memory and artificial synapses.

MXenes是新兴的二维（2D）纳米材料，由过渡金属碳化物/氮化物/碳氮化物的多个原子层组成。然而，由于金属的类似导电性，限制了其在电子器件中的内在应用。在这项工作中，发现MXene的直接表面修饰有望将其功能扩展到半导体领域。设计并采用零维碳量子点（0D-CDs）实现MXene的表面改性。均匀分布的cd被引入作为电荷存储元件，从而增强电荷传输过程，降低功耗，提高基于mxene的电子器件的稳定性。值得注意的是，cd修饰的MXene忆阻器表现出出色的双向可调忆阻性能，并复制了突触的可塑性行为，从而促进了电子突触的发展。该研究揭示了通过CDs调制策略将MXene应用于高性能忆阻器的潜力，并为将金属导电二维纳米材料扩展到非易失性存储器和人工突触提供了有效途径。

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引用次数: 0

Deformation and dynamic recrystallization behavior during hot compression of Incoloy 028 alloy incoly 028合金热压缩变形及动态再结晶行为

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.013

Zhiqiang Yu , Rui Wang , Leifeng Tuo , Yong Hu , Yan Kang , Jing Fan , Jürgen Eckert , Zhijie Yan

The present study investigates the deformation and dynamic recrystallization (DRX) phenomena of Incoloy 028 alloy during hot deformation through both experimental and simulation approaches. The hot compression experiments were undertaken within the temperatures range of 1223 K–1473 K coupled with strain rates of 0.1 s⁻¹ to 50 s⁻¹. The constitutive equations and the model of dynamic recrystallization for Incoloy 028 alloy were quantitatively constructed according to the hot compression experiments. The results show that flow curves follow a similar trend with an initial increase and followed by a smooth decrease or a plateau. The DRX fraction was found to increase with the deformation temperature, and it were in good agreement with the optical microscopy (OM) analysis, confirming the accuracy of the DRX model. Furthermore, the deformed specimen was partitioned into three regions (center, bulge, and end regions) based on the inhomogeneous distribution of stresses and strains during hot compression, and the DRX fractions in different deformation regions are with a quite difference, which were also confirmed by OM analysis.

本文通过实验和模拟两种方法研究了incoly 028合金在热变形过程中的变形和动态再结晶现象。热压缩实验温度范围为1223 K - 1473 K，应变速率为0.1 s−1 ~ 50 s−1。根据热压缩实验，定量建立了incoly 028合金的本构方程和动态再结晶模型。结果表明，两种流体的流动曲线均呈初始增大后逐渐减小或平稳的趋势。DRX分数随变形温度的升高而增加，与光学显微镜（OM）分析结果吻合较好，证实了DRX模型的准确性。根据热压缩过程中应力应变的不均匀分布，将变形试样划分为中心、凸起和端部三个区域，不同变形区域的DRX分数差异较大，OM分析也证实了这一点。

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引用次数: 0

The effect of the interface structure on the interfacial bonding strength of Ti/Al clad plates 界面结构对Ti/Al复合板界面结合强度的影响

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.006

Qiaolong Ji , Yanbin Li , Peihao Ye , Wujing Fu , Guojian Cao , Qihang Han , Xuewen Li , Hao Wu , Guohua Fan

The formation of a thick Al₃Ti layer at the Ti/Al interface during high-temperature annealing reduces the interfacial bonding strength of Ti/Al clad plates. In this study, the Ti/Al clad plates were fabricated using hot rolling combined with low-temperature diffusion annealing, resulting in the formation of an Al₃Ti layer with nanoscale thickness. The multiscale structure of the Ti/Al interface was comprehensively investigated. We found that the thickness of Al₃Ti layer was formed approximately 104 nm after annealing. Compared to the rolled Ti/Al clad plate, the interfacial bonding strength of the annealed Ti/Al clad plate increased from 164.8 MPa to 191.9 MPa. The interfacial structure transferred from an incoherent Ti/Al interface to a combination of coherent Ti/Al₃Ti and semi-coherent Al/Al₃Ti interface. Such an interface structure significantly enhanced the interfacial bonding strength. Furthermore, the digital image correlation (DIC) results revealed that the coherent Ti/Al₃Ti and semi-coherent Al/Al₃Ti interfaces alleviated localized strain concentration during shear deformation, thereby facilitating the effective strain transfer to the Ti/Al substrate. These findings provide a novel strategy for developing Ti/Al clad plates with superior interfacial bonding strength.

高温退火过程中在Ti/Al界面处形成较厚的Al3Ti层，降低了Ti/Al复合板的界面结合强度。在本研究中，采用热轧结合低温扩散退火的方法制备Ti/Al复合板，形成纳米级厚度的Al3Ti层。对Ti/Al界面的多尺度结构进行了全面的研究。我们发现退火后的Al3Ti层厚度约为104 nm。与轧制后的Ti/Al复合板相比，退火后的Ti/Al复合板界面结合强度由164.8 MPa提高到191.9 MPa。界面结构由非共相干Ti/Al界面转变为共相干Ti/Al3Ti和半共相干Al/Al3Ti界面的组合。这种界面结构显著提高了界面结合强度。此外，数字图像相关（DIC）结果表明，共相干Ti/Al3Ti和半共相干Al/Al3Ti界面减轻了剪切变形过程中的局部应变集中，从而促进了应变向Ti/Al基体的有效传递。这些发现为开发具有优异界面结合强度的Ti/Al复合板提供了一种新的策略。

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引用次数: 0

Trace Mg2+ doping enhances structural stability of single-crystal layered oxides for sodium-ion batteries 微量Mg2+掺杂提高了钠离子电池单晶层状氧化物的结构稳定性

IF 4.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Progress in Natural Science: Materials International

Pub Date : 2025-06-01 DOI: 10.1016/j.pnsc.2025.03.002

Xianzhe Han, Xiaomei Li, Ruiyun Chai, Shun Wang, Yifei Yuan, Yanshuai Li

Sodium-ion batteries (SIBs) have emerged as a promising alternative to lithium-ion batteries due to the abundance and low cost of sodium resources. However, the structural instability of P2-type layered oxides during cycling remains a significant challenge, limiting their practical application. Single-crystal materials, with their highly ordered atomic structure and superior electronic and mechanical properties, are pivotal for the development of high-performance SIBs. In this study, we optimize the electrochemical performance of P2-type single-crystal layered oxides by trace doping with Mg²⁺, carefully preserving the inherent single-crystal structure. Mg²⁺ doping not only stabilizes the P2 phase and mitigates detrimental phase transitions, but also enhances Na⁺ diffusion kinetics by subtly expanding the interplanar spacing without disrupting the single-crystal integrity. We demonstrate that trace Mg²⁺ doping improves the structural and electrochemical properties, resulting in superior cycling stability and rate capability. NMCMg_0.05 maintains 83.7 % of its initial capacity after 1000 cycles at 5 C, while full-cell tests with a hard carbon anode show 75.0 % capacity retention after 300 cycles and an energy density of 124.1 Wh·kg⁻¹. This work underscores the critical role of single-crystal engineering and trace doping in enhancing the stability and performance of SIB cathodes, offering a pathway for next-generation, high-performance sodium-ion batteries.

由于钠资源丰富且成本低，钠离子电池已成为锂离子电池的一个有前途的替代品。然而，p2型层状氧化物在循环过程中的结构不稳定性仍然是一个重大挑战，限制了它们的实际应用。单晶材料具有高度有序的原子结构和优越的电子和机械性能，是高性能sib发展的关键。在本研究中，我们通过微量掺杂Mg2+来优化p2型单晶层状氧化物的电化学性能，同时保持其固有的单晶结构。Mg2+的掺杂不仅稳定了P2相，减轻了有害的相变，而且在不破坏单晶完整性的情况下，通过微妙地扩大面间距，增强了Na+的扩散动力学。我们证明了微量Mg2+掺杂改善了结构和电化学性能，从而获得了优异的循环稳定性和速率能力。在5℃下循环1000次后，NMCMg0.05保持了83.7%的初始容量，而使用硬碳阳极的全电池测试显示，在300次循环后，容量保持率为75.0%，能量密度为124.1 Wh·kg−1。这项工作强调了单晶工程和微量掺杂在提高SIB阴极稳定性和性能方面的关键作用，为下一代高性能钠离子电池提供了途径。

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引用次数: 0