Materials Today Physics最新文献

{"title":"Full prediction of band potentials in semiconductor materials","authors":"Yousof Haghshenas ,&nbsp;Wei Ping Wong ,&nbsp;Vidhyasaharan Sethu ,&nbsp;Rose Amal ,&nbsp;Priyank Vijaya Kumar ,&nbsp;Wey Yang Teoh","doi":"10.1016/j.mtphys.2024.101519","DOIUrl":"10.1016/j.mtphys.2024.101519","url":null,"abstract":"<div><p>A machine learning (ML) framework to predict the physical band potentials for a range of semiconductor materials, from metal sulfide, oxide, and nitride, to oxysulfide and oxynitride, is hereby described. A valence band maximum (VBM) model was established via the transfer learning of a large dataset of 2D materials (1382 samples, but with incorrect VBM potentials) onto a much smaller dataset of physically measured VBM for bulk 3D materials (87 samples) on a crystal graph convolutional neural network. This resulted in predictions with experimental accuracy (RMSE = 0.27 eV), which is a 3-fold improvement compared with ML trained on the physical dataset without transfer learning (RMSE = 0.75 eV). When combined with the bandgap prediction model (RMSE = 0.29 eV), a full prediction of conduction and valence band potentials can be made, which to the best of our knowledge, is the first for any ML framework. The variation of band potentials across low-index surfaces was predicted correctly and verified with reported physical potentials. In fact, the framework is able to capture variation in band potentials associated with minor atomic position alterations. Based on this, a general trend between surface atomic displacement and VBM shift was observed across various semiconductor materials. The model is not yet able to cope with major rearrangement of atomic sequence on surface layers, i.e., surface reconstructions, since it was not trained with such data but can be easily done so with specifically designed dataset. As an example application, the ML framework was used for the screening of potential photocatalytic materials for visible light water splitting. A total of 824 materials was successfully identified, including those experimentally-verified in the literature.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101519"},"PeriodicalIF":10.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141841006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Honeycomb network structure constructed by silver nanoparticles achieving negative permittivity at low percolation threshold","authors":"Guangshen Li,&nbsp;Zihao Guo,&nbsp;Zhihao Sun,&nbsp;Jingyu Bi,&nbsp;Jianshu Wang,&nbsp;Ying Sha,&nbsp;Lei Qian","doi":"10.1016/j.mtphys.2024.101521","DOIUrl":"10.1016/j.mtphys.2024.101521","url":null,"abstract":"<div><p>Continuous conductive network is associated with the percolation effect, yet the method of fabricating network structure at low content is still a challenge. Herein, this work proposed a “honeycomb” structure via hot pressing to realize weak negative permittivity at low percolation threshold. By polydopamine (PDA) self-polymerization and silver mirror reaction plating, Ag nanoparticles coated polystyrene (PS) microsphere (PS@PDA@Ag) was prepared. Through hot pressing, the microspheres were compressed into “honeycomb”. The percolation threshold was reduced because the thin silver layer oscillated at low frequency plasma. Besides, by controlling the slivering time, weak negative permittivity in the range of −139 to −95 was observed and the percolation threshold was merely 2.23 vol%. The ac conductivity increased by four orders of magnitude and the thermal conductivity enhanced 79.08 %. The electric field and power loss density were simulated by finite element method. More than 100 V/m of electric field mode and 3 × 10¹¹ W/m³ of power loss density were presented, explaining the generation of negative permittivity and the enhancement of dielectric loss. This work presented a method of achieving weak negative dielectric via honeycomb structure, and provided a novel perspective for the development of metal-based metacomposites.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101521"},"PeriodicalIF":10.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correlating the electronic structures of β-Ga2O3 to its crystal tilts induced defects at nanoscale","authors":"Yi Wei ,&nbsp;Zichang Zhang ,&nbsp;Chuan Xu ,&nbsp;Tao Wang ,&nbsp;Yuliang Yao ,&nbsp;Jinlong Du ,&nbsp;Na Zhao ,&nbsp;Engang Fu","doi":"10.1016/j.mtphys.2024.101518","DOIUrl":"10.1016/j.mtphys.2024.101518","url":null,"abstract":"<div><p>Crosslinking structural transformation mechanism at nanoscale to the corresponding anisotropically electronic properties is essential to both the atomic-level controlled synthesis and extreme-conditional applications of the ultrawide bandgap semiconductors. Here, we report the first direct observation of bandgap variation at certain microstructural flaws in monoclinic crystal β-Ga₂O₃ via scanning transmission electron microscopy-electron energy loss spectrum (STEM-EELS) technology with both high energy and spatial resolution. Atomic-scale tilt of the Mosaic blocks relative to [010] zone axis is demonstrated to cause specific point defects accumulation at block boundaries, resulting in the formation of vacancy lines (or clusters) and then the crystal deformation induced flaws. These as-formed tiny Mosaic tilts observed from both in-plane and out-of-plane geometry are correlated to the corresponding electronic structure obtained by density functional calculations, indicating the carrier mobility limits transferred from intrinsic polar optical phonon scattering to the ionized oxygen atoms scattering in the defective monoclinic crystal. These findings provide a new insight on these anisotropic defect formation induced electronic structural variation, paving the way for precise synthesis and development of high-performance ultra-wide bandgap materials.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101518"},"PeriodicalIF":10.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141949821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A general design framework of flexible thermoelectric devices bridging power requirements for wearable electronics","authors":"Xue Han ,&nbsp;Xiao Yang ,&nbsp;Zhen Sun ,&nbsp;Minzhi Du ,&nbsp;Yong Du ,&nbsp;Ting Zhang ,&nbsp;Kun Zhang","doi":"10.1016/j.mtphys.2024.101530","DOIUrl":"10.1016/j.mtphys.2024.101530","url":null,"abstract":"<div><p>Wearable thermoelectric generators (WTEGs) promise sustainable power for wearable electronics with various strategies proposed for on-body applications. However, there is still a lack of power-demand-oriented system design that directly provides WTEG configurations tailored to targeted end electronics, resulting in sufficient power only under extreme ambience. To address this, we propose a straightforward, power-demand-oriented design framework for WTEGs that bridges the power requirements of end electronics. As we input the properties of thermoelectric materials, specific operational conditions (temperature and heat transfer coefficient), expected power output and required flexibility, the design framework can directly determine the geometric features of thermoelectric pillars and fill factor. The effectiveness has been widely verified using data from the literature, showing a mean absolute deviation of 7.1 %. This framework shows high working efficiency and significantly shortens the design process, which is the very first ever-reported design tool for WTEGs. As a case, we use the framework and design a skin-conformable thermoelectric textile (TET) with optimal structure configurations and enhanced heat transfer capabilities, achieving a high normalized power density of 4.48 μW cm⁻² K⁻². As expected, the TET, with a maximum power density of 231 μW cm⁻² successfully powered a series of on-body electronics when attached to the forearm at a breezy ambient temperature of ∼283 K. On the other hand, the TET exhibits a cooling effect of 5.73 K. Our work provides a thermal design guide for WTEGs, shedding light on the direct connection between WTEG configurations and end electronics.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101530"},"PeriodicalIF":10.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring new members of magnetoelectric materials in CuO–CuCl2–SeO2 system","authors":"D. Chandrasekhar Kakarla ,&nbsp;Yuan-Han Ku ,&nbsp;H.C. Wu ,&nbsp;C.C. Chen ,&nbsp;M.Y. Hsu ,&nbsp;T.R. Hu ,&nbsp;J.-Y. Lin ,&nbsp;Nidhi Puri ,&nbsp;M.-J. Hsieh ,&nbsp;C.W. Wang ,&nbsp;W.-H. Li ,&nbsp;Dhanasekhar C ,&nbsp;A. Tiwari ,&nbsp;C.H. Lu ,&nbsp;K.J. You ,&nbsp;T.W. Kuo ,&nbsp;K.J. Fan ,&nbsp;Y.C. Chang ,&nbsp;H.D. Yang","doi":"10.1016/j.mtphys.2024.101527","DOIUrl":"10.1016/j.mtphys.2024.101527","url":null,"abstract":"<div><p>Materials containing Cu²⁺ ions with quantum spin S = 1/2 and oxyhalide groups are an intriguing avenue for exploring quantum-magnetic phenomena. The CuO–CuCl₂–SeO₂ system has captured significant attention within the research community because of its potential to unveil new magnetic phases and their corresponding properties. Over the past decade, numerous researchers have investigated the unique physical properties of various compounds in this system and their structural correlations. In this study, we investigate the structural, magnetic, and magnetoelectric properties of three compounds: Cu₃(SeO₃)₂Cl₂, Cu₅(SeO₃)₄Cl₂, and Cu₇O₂(SeO₃)₂Cl₆. The detailed magnetic and dielectric properties of Cu₃(SeO₃)₂Cl₂ indicate antiferromagnetic ordering at <em>T</em>_N = 38 K with a dielectric anomaly independent of the magnetic origin, whereas Cu₅(SeO₃)₄Cl₂ shows finite magnetoelectric coupling near <em>T</em>_N = 42 K. More importantly, we successfully synthesized the Nicksobolevite Cu₇O₂(SeO₃)₂Cl₆ compound, which is a more complex structure, from the CuO–CuCl₂–SeO₂ system. Interestingly, Cu₇O₂(SeO₃)₂Cl₆ and Cu²⁺ ions formed a spin-frustrated lattice with a cluster of corners sharing Cu²⁺ tetrahedra connected by eight Cu atoms running along the crystallographic <em>b</em>-axis. Complex magnetism with canted antiferromagnetic ordering at <em>T</em>_N = 11 K was consistent with the finite hysteresis in the M-<em>H</em> curve, specific heat <em>C</em>_p, and dielectric anomaly, indicative of strong magnetoelectric coupling. Additionally, systematic changes in the magneto-dielectric behavior after magnetoelectric poling revealed resilient coupling between the magnetic and electric domains. Our study provides insights into the unique properties of these compounds and offers a detailed comparison with other multiferroic compounds in the CuO–CuCl₂–SeO₂ system.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101527"},"PeriodicalIF":10.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141909627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen and sulfur incorporated chitosan-derived carbon sphere hybrid MXene as highly efficient electrocatalyst for oxygen reduction reaction","authors":"Mohamedazeem M. Mohideen ,&nbsp;Abdul Qadir ,&nbsp;Balachandran Subramanian ,&nbsp;Seeram Ramakrishna ,&nbsp;Yong Liu","doi":"10.1016/j.mtphys.2024.101528","DOIUrl":"10.1016/j.mtphys.2024.101528","url":null,"abstract":"<div><p>The quest for non-precious electrocatalysts through biomass for energy applications has attracted keen interest, but optimization for fuel cells remains challenging. Herein, we have developed a nitrogen and sulfur-anchored MXene hybrid chitosan-derived carbon sphere (N,S-MXC) reporting for the first time as a novel oxygen reduction reaction (ORR) electrocatalyst. Interestingly, as the mass ratio of MXene to Chitosan varied by (1:2, 1:1, and 2:1), the microstructures of the as-prepared catalysts changed, which drastically influenced the corresponding ORR performance. Notably, when the mass ratio was maintained to be 1:2, Ti₃C₂ nanoparticles were dispersed on the surface of the biomass carbon core shell. They created multimodal porous morphology that helps to facilitate faster electron transfer, resulting in a high onset-potential of 0.89 V and limiting current density of −4.2 mA/cm² as well as excellent durability with minimum half-wave potential loss of 2.3 mV after 5000 cyclic voltammetry (CV) cycles than benchmark Pt/C. In addition, the corresponding catalyst also possessed robust stability of 87.47 % and an excellent methanal poisoning tolerance effect in an alkaline medium. In a nutshell, this work paves the pathway for converting sea animal waste to develop porous carbon as supporting material for fuel cells that directly or indirectly support achieving carbon neutrality.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101528"},"PeriodicalIF":10.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141877796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D-Ising-type magnetic interactions stabilized by the extremely large uniaxial magnetocrystalline anisotropy in layered ferromagnetic Cr2Te3","authors":"Shubham Purwar,&nbsp;Tushar Kanti Bhowmik,&nbsp;Soumya Ghorai,&nbsp;Setti Thirupathaiah","doi":"10.1016/j.mtphys.2024.101522","DOIUrl":"10.1016/j.mtphys.2024.101522","url":null,"abstract":"<div><p>We investigate the magnetocrystalline anisotropy, critical behavior, and magnetocaloric effect in ferromagnetic-layered Cr₂Te₃. We have studied the critical behavior around the Curie temperature (<em>T</em>_<em>C</em>) using various techniques, including the modified Arrott plot (MAP), the Kouvel-Fisher method (KF), and critical isothermal analysis (CI). The derived critical exponents <em>β</em> = 0.353(4) and <em>γ</em> = 1.213(5) fall in between the three-dimensional (3D) Ising and 3D Heisenberg type models, suggesting complex magnetic interactions by not falling into any single universality class. On the other hand, the renormalization group theory, employing the experimentally obtained critical exponents, suggests 3D-Ising-type magnetic interactions decaying with distance as <em>J</em>(<em>r</em>) = <em>r</em>^−4.89. We also observe an extremely large uniaxial magnetocrystalline anisotropy energy (MAE) of <em>K</em>_<em>u</em> = 2065 kJ/m³, the highest ever found in any Cr_<em>x</em>Te_<em>y</em> based systems, originating from the noncollinear ferromagnetic ground state as predicted from the first-principles calculations. The self-consistent renormalization theory (SCR) suggests Cr₂Te₃ to be an out-of-plane itinerant ferromagnet. Further, a maximum entropy change of -<span><math><mi>Δ</mi><msubsup><mrow><mi>S</mi></mrow><mrow><mi>M</mi></mrow><mrow><mi>max</mi></mrow></msubsup><mo>≈</mo></math></span> 2.08 J/kg − <em>K</em> is estimated around <em>T</em>_<em>C</em> for the fields applied parallel to the <em>c</em>-axis.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101522"},"PeriodicalIF":10.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141877798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generalization of interfacial thermal conductance based on interfacial phonon localization","authors":"Ibrahim Al Keyyam,&nbsp;Xinwei Wang","doi":"10.1016/j.mtphys.2024.101516","DOIUrl":"10.1016/j.mtphys.2024.101516","url":null,"abstract":"<div><p>Interfacial energy transport is of great engineering and scientific importance. Traditional theoretical treatment based on phonon reflection and transmission only provides qualitative understanding of the interfacial thermal conductance (<em>G</em>). In the interface region, the material has gradual (covalent) or abrupt (van de Waals) physical structure transition, each transition features interface-region atomic interactions that are different from those of both adjoining sides. This difference makes the interface-region phonons extremely localized. Here, by constructing an “equivalent interfacial medium” (EIM) that accounts for the extremely localized phonon region, <em>G</em> can be described by a universal physical model that is characterized by an “interface characteristic temperature” (<span><math><msub><mi>Θ</mi><mrow><mi>i</mi><mi>n</mi><mi>t</mi></mrow></msub></math></span>) and energy carrier transfer time. The EIM model fits widely reported <em>G</em> ∼ <em>T</em> (<em>T</em>: temperature) data with high accuracy and provides remarkable prediction of <em>G</em> at different temperatures based on 2–3 experimental data points. Under normalized temperature (<em>T</em>/<span><math><msub><mi>Θ</mi><mrow><mi>i</mi><mi>n</mi><mi>t</mi></mrow></msub></math></span><em>)</em> and interfacial thermal conductance (<em>G</em>/<em>G</em>_max), all literature data of <em>G</em> can be universally grouped to a single curve. The EIM model provides a solid correlation between <em>G</em> and interfacial structure and is expected to significantly advance the physical understanding and design of interfacial energy transport toward high-efficiency energy conversion, transport, and micro/nanoelectronics.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101516"},"PeriodicalIF":10.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141732350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonreciprocal wide-angle and narrowband thermal emitter","authors":"Jianshu Wang ,&nbsp;Kezhang Shi ,&nbsp;Xiaobo Xing","doi":"10.1016/j.mtphys.2024.101515","DOIUrl":"10.1016/j.mtphys.2024.101515","url":null,"abstract":"<div><p>Nonreciprocal thermal radiation allows the violation of Kirchhoff's law, as the spectral directional emissivity and absorptivity at the same angle can be different. Prior research has elucidated that certain optical resonance modes facilitate amplification of nonreciprocity at specific angles or wavelengths. However, achieving nonreciprocal thermal radiation with both wide-angle coverage and narrowband characteristics poses a fundamental yet challenging problem. In this work, we demonstrate a nonreciprocal thermal emitter that achieves both wide-angle and narrowband through a periodic structure composed of magneto-optical materials. With an external magnetic field (<em>B</em> = 3 T or 1 T), the pronounced nonreciprocity arising from the magneto-optical localized resonance mode at 6.52 μm or 7.18 μm facilitates a distinct difference between the emissivity and absorptivity across a wide angular range from near 0°–89°. The robustness of the wide-angle and narrowband nonreciprocal thermal radiation is demonstrated with ±5 % fluctuations in structural parameters. The performance of the nonreciprocity with azimuthal angle <em>ϕ</em> ranging from 0° to 360° is also investigated. This work holds promising potential for applications in thermal management, directional thermal camouflage, high-efficiency thermophotovoltaic systems, and more.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101515"},"PeriodicalIF":10.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141630406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-assembly of Sr2P2O7@2D rGO nano/micro-architecture for highly durable and bendable solid-state supercapattery","authors":"Pranav K. Katkar ,&nbsp;Mahesh B. Naikwade ,&nbsp;Supriya A. Patil ,&nbsp;Sang-Wha Lee","doi":"10.1016/j.mtphys.2024.101510","DOIUrl":"10.1016/j.mtphys.2024.101510","url":null,"abstract":"<div><p>Metal pyrophosphate-based materials for supercapattery have recently attracted significant research interest due to their high energy density, structural stability, and cyclability. Despite this, the low electric conductivity of such compounds severely limits the rate efficiency of supercapattery. To address this challenge, self-assembly of strontium pyrophosphate (Sr₂P₂O₇) on 2D reduced graphene oxide (rGO) was produced (Sr₂P₂O₇@2D rGO) with varying urea and rGO proportions employing a two-stage procedure: (i) layer-by-layer (LBL) deposition of rGO nanosheets, followed by (ii) a hydrothermal method to produce strontium pyrophosphate (SP) microflakes. The effective integration of conductive rGO with Sr₂P₂O₇ flakes has been verified by structural and morphological investigation, which indicates that rGO nanosheets offer a large number of active sites, high electrical conductivity, and a wide surface area. However, when compared to the other electrodes, the optimized SP/rGO-3 hybrid electrode possesses battery-like properties, with an outstanding specific capacity of 205 mAh/g (738C/g) in 1 M KOH at a current density of 2 A/g and maintains 99 % durability after 10000 cycles. These outcomes imply a synergistically enhanced surface redox charge storage mechanism through the inclusion of rGO (optimal) and the influence of SP nano/microarchitecture, resulting in an extended cycle lifespan and remarkable electrochemical characteristics. Furthermore, a hybrid solid-state (HSS) supercapattery developed by employing SP/rGO-3 as the cathode and rGO as the anode (SP/rGO-3//rGO) achieved a maximum specific (areal) capacity of 189C/g (52 mAh/g, 133 mF cm⁻²), (areal) energy density of 42.04 Wh/kg (47.3 mWh cm⁻²), and a power density of 2755.6 W/kg (3.1 mW cm⁻²). In addition, the HSS device demonstrates remarkable long-term cyclability, retaining 96 % capacity after 10000 cycles. The present research suggests that Sr₂P₂O₇@2D rGO composites have extraordinary electrochemical properties, highlighting their potential as nano/micro-structured electrodes for future energy storage devices.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"46 ","pages":"Article 101510"},"PeriodicalIF":10.0,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141623943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}