Journal of Materials Science最新文献

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Effect of second-phase precipitates on deformation microstructure in AA2024 (Al–Cu–Mg): dislocation substructures and stored energy 第二相析出物对 AA2024(铝-铜-镁)变形微观结构的影响:位错亚结构和储能
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-19 DOI: 10.1007/s10853-024-10205-6
Daniel Irmer, Can Yildirim, Mohamed Sennour, Vladimir A. Esin, Charbel Moussa
{"title":"Effect of second-phase precipitates on deformation microstructure in AA2024 (Al–Cu–Mg): dislocation substructures and stored energy","authors":"Daniel Irmer,&nbsp;Can Yildirim,&nbsp;Mohamed Sennour,&nbsp;Vladimir A. Esin,&nbsp;Charbel Moussa","doi":"10.1007/s10853-024-10205-6","DOIUrl":"10.1007/s10853-024-10205-6","url":null,"abstract":"<p>The importance of comprehensive multiscale characterisation in advancing our understanding of engineering materials is undeniable but remains a challenging pursuit. Combining complimentary microstructure characterisation techniques, including transmission electron microscopy, electron backscatter diffraction and dark-field X-ray microscopy (DFXM), the formation of deformation microstructures is investigated in presence of shearable and non-shearable hardening precipitates in an industrial aluminium alloy (AA) 2024 (Al–Cu–Mg family). The alloy was used in naturally aged T3 (with shearable co-clusters and Guinier–Preston–Bagaryatsky (GPB) zones) and peak-hardened T8 (with non-shearable S-phase precipitates) states. After cold rolling with thickness reductions varying from 25 to 60% (or corresponding von Mises strain from 0.33 to 1.06), the T8 state revealed a higher sub-boundary density with slightly smaller mean disorientation angle, as compared to those in the T3 state. At a von Mises strain of 0.33, the T8 state exhibited higher long-range orientation gradients, as compared to the T3 state, for higher strain orientation gradients in T3 surpass those in T8 state. With DFXM, distinct 3D substructures are shown, revealing ellipsoidal sub-grains in the T8 state and pancake-like sub-grains in the T3 state. Moreover, the stored energy induced by cold rolling is higher for the T8 state. These results indicate different deformation microstructures, formed in the same AA2024 but hardened by shearable and non-shearable precipitates.</p>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"18978 - 19002"},"PeriodicalIF":3.5,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10853-024-10205-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving the thermal, mechanical, and insulating characteristics of thermal interface materials with liquid metal-based diphase structure 利用液态金属二相结构改善热界面材料的热学、机械和绝缘特性
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-18 DOI: 10.1007/s10853-024-10176-8
Siyu Chen, Ruifeng Li, Hongxiang Hu, Jingdong Guo, Song Wei, Wangyun Li
{"title":"Improving the thermal, mechanical, and insulating characteristics of thermal interface materials with liquid metal-based diphase structure","authors":"Siyu Chen,&nbsp;Ruifeng Li,&nbsp;Hongxiang Hu,&nbsp;Jingdong Guo,&nbsp;Song Wei,&nbsp;Wangyun Li","doi":"10.1007/s10853-024-10176-8","DOIUrl":"10.1007/s10853-024-10176-8","url":null,"abstract":"<div><p>Gallium-based liquid metal has significant research value in interfacial heat transfer due to high its thermal conductivity. However, its great fluidity frequently causes the risk of leakage and corrosion when in direct contact with heat sinks. In this paper, a high-performance thermal pad with diphase continuous structure reinforced by liquid metal is proposed. Nickel-coated copper particles connected by liquid metal ensure heat-transfer performance, while silicone rubber provides softness and strength. Utilizing the remarkable processability and insulation properties of conventional polymers, they function as a barrier layer to avoid liquid metal from overflowing. The findings indicate that the composite exhibits favorable insulation performance, mechanical characteristics, and a thermal conductivity of up to 12.41 W/(m K). Most notably, the problem of liquid metal overflow has been effectively resolved, rendering it highly applicable in the field of thermal management within the electronics industry.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19125 - 19137"},"PeriodicalIF":3.5,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reducing the annealing heating rate sensitivity of Fe83.5Si3B10P2Cu1.5 soft magnetic nanocrystalline alloy by adjusting the melt spinning cooling rate 通过调整熔融纺丝冷却速率降低 Fe83.5Si3B10P2Cu1.5 软磁纳米晶合金的退火加热速率敏感性
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-18 DOI: 10.1007/s10853-024-10333-z
T. X. Huang, Q. Yan, F. G. Chen, H. Z. Zhou, Y. G. Wang
{"title":"Reducing the annealing heating rate sensitivity of Fe83.5Si3B10P2Cu1.5 soft magnetic nanocrystalline alloy by adjusting the melt spinning cooling rate","authors":"T. X. Huang,&nbsp;Q. Yan,&nbsp;F. G. Chen,&nbsp;H. Z. Zhou,&nbsp;Y. G. Wang","doi":"10.1007/s10853-024-10333-z","DOIUrl":"10.1007/s10853-024-10333-z","url":null,"abstract":"<div><p>This work investigates the effect of the microstructure of the as-quenched precursors prepared at various cooling rates on the soft magnetic characteristics and its sensitivity to the annealing heat rate (HR) of the Fe<sub>83.5</sub>Si<sub>3</sub>B<sub>10</sub>P<sub>2</sub>Cu<sub>1.5</sub> nanocrystalline alloy. The results of Mössbauer spectra indicate that the cooling rate during the melt spinning process significantly impact the microstructure of as-quenched alloy samples. The decrease in the cooling rate facilitates the formation of an amorphous/nanocrystalline precursor containing more “α-Fe-like” structure and Cu-clusters. Variations of grain size and <i>H</i><sub>c</sub> with heating rate indicate that Fe<sub>83.5</sub>Si<sub>3</sub>B<sub>10</sub>P<sub>2</sub>Cu<sub>1.5</sub> alloy samples prepared at a low cooling rate are less sensitive to the heating rate during crystallization annealing. The Fe<sub>83.5</sub>Si<sub>3</sub>B<sub>10</sub>P<sub>2</sub>Cu<sub>1.5</sub> nanocrystalline alloy prepared at low cooling rate can achieve excellent soft magnetic properties with low HR annealing.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 41","pages":"19707 - 19715"},"PeriodicalIF":3.5,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Role of carbon vacancies in determining the structural, mechanical, and thermodynamic properties of (HfTaZrNb)C1-x high entropy carbides: a first-principles study 碳空位在决定 (HfTaZrNb)C1-x 高熵碳化物的结构、机械和热力学性质中的作用:第一原理研究
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-18 DOI: 10.1007/s10853-024-10306-2
Yang Bai, Yuxin Liang, Juan Bi, Baoning Cui, Zhaopeng Lu, Bangsheng Li
{"title":"Role of carbon vacancies in determining the structural, mechanical, and thermodynamic properties of (HfTaZrNb)C1-x high entropy carbides: a first-principles study","authors":"Yang Bai,&nbsp;Yuxin Liang,&nbsp;Juan Bi,&nbsp;Baoning Cui,&nbsp;Zhaopeng Lu,&nbsp;Bangsheng Li","doi":"10.1007/s10853-024-10306-2","DOIUrl":"10.1007/s10853-024-10306-2","url":null,"abstract":"<div><p>High-entropy carbides (HECs), which exhibit a unique combination of properties that render them suitable for a variety of applications, have garnered significant interest. The role of vacancies in HECs, critical to their performance, remains insufficiently explored. This investigation delves into the stability, mechanical characteristics, electronic properties, and thermodynamic features of rock salt-structured (HfTaZrNb)C<sub>1-x</sub> (<i>x</i> = 0.0, 0.125, 0.25, 0.375), employing density functional theory and the Debye–Grüneisen model. Our findings confirm the thermodynamic stability of (HfTaZrNb)C<sub>1-x</sub>, as indicated by negative formation energies. Increasing vacancy content results in a decrease in lattice constants, modulus, hardness, and minimum thermal conductivity, alongside a reduction in elastic anisotropy and Debye temperature. Conversely, ductility is enhanced. Electronically, the research provides detailed insights into how vacancies influence bonding, elucidating the underlying reasons for variations in mechanical properties. This study deepens our understanding of vacancy impacts at the atomic level in HECs, providing vital data to inform future material design and application strategies.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19112 - 19124"},"PeriodicalIF":3.5,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microstructure and stress evolution of W nanofilms prepared by arc ion plating under different deposition time and substrate bias 不同沉积时间和基底偏压下电弧离子镀制备的 W 纳米薄膜的微观结构和应力演变
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-18 DOI: 10.1007/s10853-024-10329-9
Xi Li, Zongxin Mu, Xinyu Song
{"title":"Microstructure and stress evolution of W nanofilms prepared by arc ion plating under different deposition time and substrate bias","authors":"Xi Li,&nbsp;Zongxin Mu,&nbsp;Xinyu Song","doi":"10.1007/s10853-024-10329-9","DOIUrl":"10.1007/s10853-024-10329-9","url":null,"abstract":"<p>This study investigates the effects of film thickness and substrate bias on the microstructure and stress state of tungsten (W) films prepared by arc ion plating (AIP) on substrates including 304 stainless steel (SS), tungsten (W), and Si (100). The microstructure of the films was characterized using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). Residual stress was analyzed using substrate curvature techniques combined with Stoney's formula and Huseh's formula. The results indicate that the W films are single-phase, predominantly comprising the pure α-phase. The film surfaces are dense and smooth, with the absence of large particles. The films consist of closely packed columnar grains, and no microcracks, voids, or delamination were observed at the film-substrate interface, indicating strong adhesion. As the film thickness increased, the curvature of the W/SS system and the compressive stress in the film both increased, which closely matched the fitted curves. As the substrate bias increased, the curvature of the W/SS system decreased, and the compressive stress in the W film increased. At higher substrate biases, deposition temperatures are higher, and growth stress remains nearly constant across a range of continuous bias variations, with the increase in residual stress primarily due to thermal stress.</p>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19254 - 19272"},"PeriodicalIF":3.5,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of Ti/Au, Ni/Au, and Sc/Au ohmic contact metal stacks on (Al0.18Ga0.82)2O3 (Al0.18Ga0.82)2O3上 Ti/Au、Ni/Au 和 Sc/Au 欧姆接触金属叠层的比较
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-17 DOI: 10.1007/s10853-024-10330-2
Hsiao-Hsuan Wan, Chao-Ching Chiang, Jian-Sian Li, Fan Ren, Fikadu Alema, Andrei Osinsky, Valentin Craciun, Stephen J. Pearton
{"title":"Comparison of Ti/Au, Ni/Au, and Sc/Au ohmic contact metal stacks on (Al0.18Ga0.82)2O3","authors":"Hsiao-Hsuan Wan,&nbsp;Chao-Ching Chiang,&nbsp;Jian-Sian Li,&nbsp;Fan Ren,&nbsp;Fikadu Alema,&nbsp;Andrei Osinsky,&nbsp;Valentin Craciun,&nbsp;Stephen J. Pearton","doi":"10.1007/s10853-024-10330-2","DOIUrl":"10.1007/s10853-024-10330-2","url":null,"abstract":"<div><p>Three different metal stacks, namely Ti/Au, Ni/Au and Sc/Au, were examined as Ohmic metal contacts to Si-doped, n-type (4.1 × 10<sup>19</sup> cm<sup>−3</sup>), 300-nm thick (Al<sub>0.18</sub>Ga<sub>0.82</sub>)<sub>2</sub>O<sub>3</sub> layers grown by metal-organic chemical vapor deposition. This is a typical composition used for (Al<sub><i>x</i></sub>Ga<sub>1-<i>x</i></sub>)<sub>2</sub>O<sub>3</sub> /Ga<sub>2</sub>O<sub>3</sub> heterostructure field effect transistors. The effects of postdepositional annealing (300–475 °C) were examined through circular transfer length method (CTLM) measurements to determine both the transfer resistance and specific contact resistivity. The lowest resistances were achieved with Ti/Au, with specific contact resistivity 1.2 × 10<sup>–4</sup> Ω·cm<sup>2</sup> and transfer resistance 3.82 Ω·mm for as-deposited contacts. Annealing was found to degrade both of these resistances in all cases from the as-deposited values, even though the AGO sheet resistance decreased slightly, from 1191 Ω/□ to 905 Ω/□ after annealing at 475 °C. The temperature dependence of specific contact resistivity is also investigated.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19152 - 19160"},"PeriodicalIF":3.5,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10853-024-10330-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial: The November 2024 cover paper 社论:2024 年 11 月封面文件
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-17 DOI: 10.1007/s10853-024-10308-0
C. Barry Carter
{"title":"Editorial: The November 2024 cover paper","authors":"C. Barry Carter","doi":"10.1007/s10853-024-10308-0","DOIUrl":"10.1007/s10853-024-10308-0","url":null,"abstract":"<div><h2>Graphical abstract</h2><div><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 41","pages":"19337 - 19339"},"PeriodicalIF":3.5,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and characterization of low loss polyvinyl butyral/barium titanate nanocomposite films for energy storage applications 用于储能应用的低损耗聚乙烯醇缩丁醛/钛酸钡纳米复合薄膜的制备与表征
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-16 DOI: 10.1007/s10853-024-10281-8
Ahmed Awadallah-F, Hussein E. Ali, R. A. Zaghlool, A. S. Abdel Moghny
{"title":"Preparation and characterization of low loss polyvinyl butyral/barium titanate nanocomposite films for energy storage applications","authors":"Ahmed Awadallah-F,&nbsp;Hussein E. Ali,&nbsp;R. A. Zaghlool,&nbsp;A. S. Abdel Moghny","doi":"10.1007/s10853-024-10281-8","DOIUrl":"10.1007/s10853-024-10281-8","url":null,"abstract":"<div><p>For energy storage applications, attaining high dielectric permittivity as well as low loss factor is the foremost target. This could be accomplished via filling polymer matrices with inorganic filler which is characterized by relatively high dielectric permittivity. In the present study, polyvinyl butyral (PVB) was used as a matrix material for preparing nanocomposite films filled with different weight fractions (2, 5, 10, and 15%) of barium titanate (BaTiO<sub>3</sub>) using the casting approach. The results show that BaTiO<sub>3</sub> (BT) is well incorporated inside the PVB matrix. Although the dielectric permittivity has been decreased from 3.61 to 2.41 at 1 kHz upon filling the PVB matrix with 5 wt. % of BT, the PVB-BT-NPs-5 nanocomposite film shows the lowest loss factor ~ 0.0049, nearly half that for PVB, 0.0092, which implies the increased film ability to keep its stored energy. The PVB-BT-NPs-5 has been irradiated with gamma radiation to investigate its impact on the structure beside its dielectric and thermal properties. The crystallite size of BT has been decreased from 20.64 to 17.77 nm as PVB-BT-NPs-5 nanocomposite film has been irradiated at a dose of 0.5 kGy. The dielectric permittivity has been decreased from 2.41 to 2.37 at 1 kHz, whereas an increase from 0.0049 to 0.0073 in the loss factor is observed. Furthermore, the thermal stability has been decreased due to the deformation induced by gamma rays inside the nanocomposite films. Therefore, these nanocomposite films could be better exploited in energy storage applications in its un-irradiated form.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19175 - 19191"},"PeriodicalIF":3.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10853-024-10281-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Co addition on the microstructure and the hydrogen absorption properties of Zr–V–Fe-based alloys 添加 Co 对 Zr-V-Fe 基合金微观结构和吸氢性能的影响
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-16 DOI: 10.1007/s10853-024-10288-1
Yihan Shen, Lingyun Wang, Xiaotong Xu, Zijie Jiao, Jie Xiang, Shuiming Huang, Tao Lu, Xueling Hou
{"title":"Effects of Co addition on the microstructure and the hydrogen absorption properties of Zr–V–Fe-based alloys","authors":"Yihan Shen,&nbsp;Lingyun Wang,&nbsp;Xiaotong Xu,&nbsp;Zijie Jiao,&nbsp;Jie Xiang,&nbsp;Shuiming Huang,&nbsp;Tao Lu,&nbsp;Xueling Hou","doi":"10.1007/s10853-024-10288-1","DOIUrl":"10.1007/s10853-024-10288-1","url":null,"abstract":"<div><p>This work investigates the influence of minute additions of cobalt (Co) on the hydrogen absorption characteristics, phase composition, binding energy, and adsorption energy of the Zr<sub>70</sub>V<sub>24.6</sub>Fe<sub>5.4−<i>x</i></sub>Co<sub><i>x</i></sub> (wt%) (<i>x</i> = 0 ~ 2.0) alloys. The research revealed that the Zr<sub>70</sub>V<sub>24.6</sub>Fe<sub>4.4</sub>Co<sub>1.0</sub> alloy exhibits the peak hydrogen absorption capacity. In comparison with the Zr<sub>70</sub>V<sub>24.6</sub>Fe<sub>5.4</sub> (wt%) alloy, the hydrogen absorption properties increase from 80196.34 Pa cm<sup>3</sup> g<sup>−1</sup> (<i>x</i> = 0) to 133364.79 Pa cm<sup>3</sup> g<sup>−1</sup> (<i>x</i> = 1.0 wt%), representing a 66.30% improvement in performance. The enhancements in performance can be attributed to: an increase in lattice volume due to the addition of Co, which promotes the diffusion of hydrogen atoms within the lattice; a phase transition of the AB<sub>2</sub> phase from Zr(V<sub>0.75</sub>Fe<sub>0.25</sub>)<sub>2</sub> to Zr(V<sub>0.91</sub>Co<sub>0.09</sub>)<sub>2</sub>, and a significant decrease in the binding energy of Zr from 182.99 eV (<i>x</i> = 0) to 182.30 eV (<i>x</i> = 1.0 wt%), V in the alloy from 530.91 eV (<i>x</i> = 0) to 530.35 eV (<i>x</i> = 1.0 wt%), thereby enhancing the alloy’s reactivity; according to the density functional theory calculations, the weighted adsorption energy of the alloy for H<sub>2</sub> is increased from 35.11 to 38.14 eV. These research findings offer valuable guidance for the development of getters, and besides, expected to help promote further application of getters in high-tech fields such as military and medical.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19303 - 19318"},"PeriodicalIF":3.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co(OH)2 electrodeposition modified bamboo-based laminated structure woodceramics electrode assembled with CNT and holed graphene 用 CNT 和孔洞石墨烯组装的 Co(OH)2 电沉积改性竹基层状结构木质陶瓷电极
IF 3.5 3区 材料科学
Journal of Materials Science Pub Date : 2024-10-15 DOI: 10.1007/s10853-024-10323-1
Xianchun Yu, Yiqing Shi, Rongxiang Zeng, Xiangjun Wang, Le Gong, Xufeng Zeng, Jingyi Liu, Delin Sun
{"title":"Co(OH)2 electrodeposition modified bamboo-based laminated structure woodceramics electrode assembled with CNT and holed graphene","authors":"Xianchun Yu,&nbsp;Yiqing Shi,&nbsp;Rongxiang Zeng,&nbsp;Xiangjun Wang,&nbsp;Le Gong,&nbsp;Xufeng Zeng,&nbsp;Jingyi Liu,&nbsp;Delin Sun","doi":"10.1007/s10853-024-10323-1","DOIUrl":"10.1007/s10853-024-10323-1","url":null,"abstract":"<div><p>To investigate the effect of Co(OH)<sub>2</sub> on the performance of the special capacitor, graphene was holed (HG) using microwave and KMnO<sub>4</sub> and electrostatically sprayed with CNT to prepare a laminated structure bamboo woodceramics matrix (C/HG@BE). Then, Co(OH)<sub>2</sub> was electrodeposited on the matrix to form a supercapacitor electrode (C/HG@BE-Co-x). The results showed that the Mn nanoparticles generated by KMnO<sub>4</sub> under the action of microwave were partially embedded in the graphene sheet mesh and formed holes in the graphene sheet after removal. The matrix had a clear laminated structure and good electrical conductivity. The electrical resistivity was approximately 0.163 Ω cm at 1000 ℃ sintering temperature and remained low after the electrode was modified Co(OH)<sub>2</sub>. Meanwhile, the Co(OH)<sub>2</sub> was uniformly deposited on the surface and within pores of the wall of the matrix and anchored by PPy to reduce fall. The electrode of C/HG@BE-Co-<sub>1500</sub> modified with Co(OH)<sub>2</sub> exhibited a good pseudocapacitance effect. At the current density of 0.1 A/g, the specific capacitance was approximately 255.12 F/g, and the retention of specific capacitance was maintained at 83.75% after 10000 cycles. When the energy density was 40.78 Wh/kg, the power density was 480 W/kg, indicating excellent electrochemical performance, which contributed of the synergistic action of electronic double layer capacitor and pseudocapacitance.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19228 - 19243"},"PeriodicalIF":3.5,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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