用于固态钠离子电池的gd2o3改性磷酸钠玻璃陶瓷电解质中Na+离子的输送

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-09-23 DOI:10.1016/j.physb.2025.417835

K.C.Acharyulu Srinivasula , S. Bharadwaj , Vamsi Krishna Katta , H.C. Manjunatha , Dimple P. Dutta , Balaji Rao Ravuri

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引用次数: 0

摘要

通过熔体淬火、球磨和900℃结晶3h，合成了成分为（100−x）[0.3 na20 - 0.1 sno2 - 0.1 sio2 - 0.5 p2o5] -xGd2O3 （x = 0,2,5,7和10 mol%；命名为G-NSnSPGdx）的玻璃电解质，得到了玻璃陶瓷体系（GC-NSnSPGdx）。XRD证实Na5GdSi4O12 （PDF-00-035-0141， r3c空间基）为主导离子导电相。SEM和HR-TEM显示晶粒尺寸平均为436 nm。采用NaMnO2阴极、GC-NSnSPGd10-9h电解液（优化）和金属钠阳极的全电池显示出低界面电阻，在0.1℃下可输出112 mAh g - 1，并且具有良好的循环稳定性，500次循环库仑效率高达97%。这些结果突出了gd2o3修饰的玻璃陶瓷电解质在高性能钠离子电池（nib）中的潜力。

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Tailoring Na+ ion transport in Gd2O3-modified sodium silicate phosphate glass-ceramic electrolytes for solid-state Na-ion batteries

Glass electrolytes with the composition (100−x)[0.3Na₂O–0.1SnO₂–0.1SiO₂–0.5P₂O₅]–xGd₂O₃ (x = 0, 2, 5, 7, and 10 mol%; designated as G-NSnSPGd_x) were synthesized via melt-quenching, ball milling, and crystallization at 900 °C for 3h to obtain glass-ceramic systems (GC-NSnSPGd_x). XRD confirmed Na₅GdSi₄O₁₂ (PDF-00-035-0141, R

\overline{3 c}

space group) as the dominant ion-conducting phase. SEM and HR-TEM revealed crystallite sizes averaging 436 nm. A full-cell with NaMnO₂ cathode, GC-NSnSPGd₁₀–9h electrolyte (optimized), and sodium metal anode showed low interfacial resistance, delivering 112 mAh g⁻¹ at 0.1 C and excellent cycling stability with 97 % Coulombic efficiency over 500 cycles. These results highlight the potential of Gd₂O₃-modified glass-ceramic electrolytes for high-performance sodium-ion batteries (NIBs).

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces