Electronic Materials Letters最新文献_第6页

An Ideal Two-Dimensional Porous B4O2 as Anode Material for Enhancing Ion Storage Performance 一种理想的二维多孔 B4O2 阳极材料用于提高离子存储性能

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-11-07 DOI: 10.1007/s13391-023-00465-w

Chen Li, Yangtong Luo, Zhangyan Wang, Chengyong Zhong, Shuo Li

The utilization of two-dimensional porous materials as anodes in ion batteries has garnered significant interest within the field of clean energy because of their flexible architecture, high conductivity, rapid diffusion process and high specific ion capacity. Herein, we developed a new metal-free 2D porous compound, namely, B₄O₂. The stability of the B₄O₂ monolayer was verified through the ab-initio molecular dynamics simulations and phonon spectrum calculations. The results demonstrate that the adsorption of K, Na, and Li atoms onto the B₄O₂ monolayer surface is remarkably stable, with all three species exhibiting a shared diffusion path. Specifically, we found that the adsorption of K atoms on the B₄O₂ monolayer surpasses that of Na and Li atoms, and the diffusion of K atoms occurs at a faster rate than Na and Li atoms on the same monolayer surface. The maximum theoretical specific capacity of K⁺, Na⁺ and Li⁺ is calculated to be 626.1 mAh/g. In addition, the B₄O₂ monolayer retains good electronic conductivity and electron activity during the atomic adsorption processes. Based on our findings, the B₄O₂ monolayer exhibits significant potential as anode material for ion batteries. This study paves the way for a novel approach in designing new 2D porous materials specifically tailored for energy storage and conversion applications.

Graphical Abstract

由于二维多孔材料具有灵活的结构、高导电性、快速扩散过程和高比离子容量，因此将其用作离子电池的阳极在清洁能源领域引起了极大的兴趣。在此，我们开发了一种新型无金属二维多孔化合物，即 B4O2。通过非线性分子动力学模拟和声子谱计算验证了 B4O2 单层的稳定性。结果表明，K、Na 和 Li 原子在 B4O2 单层表面的吸附非常稳定，而且这三种原子都有共同的扩散路径。具体来说，我们发现 K 原子在 B4O2 单层上的吸附量超过了 Na 原子和 Li 原子，而且 K 原子在同一单层表面上的扩散速度快于 Na 原子和 Li 原子。经计算，K+、Na+ 和 Li+ 的最大理论比容量为 626.1 mAh/g。此外，B4O2 单层在原子吸附过程中保持了良好的电子导电性和电子活性。根据我们的研究结果，B4O2 单层作为离子电池的阳极材料具有巨大的潜力。这项研究为设计专门用于能量储存和转换应用的新型二维多孔材料铺平了道路。

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引用次数: 0

Near-Ultraviolet Lateral Photovoltaic Effect of Epitaxial Nb:SrTiO3 Films on Si Substrate Using TiN as a Buffer Layer 以 TiN 为缓冲层的硅基底上外延 Nb:SrTiO3 薄膜的近紫外侧光电效应

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-11-02 DOI: 10.1007/s13391-023-00469-6

Fang Wang, Yu Liu, Tian Yu, Cai, Wenfeng Xiang

In recent years, significant attention has been directed toward exploring heterojunctions based on perovskite materials for ultraviolet photodetectors. This study focuses on the fabrication of high-quality single-crystal Nb:SrTiO₃ (NSTO) films on Si substrates, achieved through the utilization of a TiN thin film as a buffer layer. The investigation delves into the lateral photovoltaic effect exhibited by the film. Characterization using X-ray diffraction and high-resolution transmission electron microscopy confirms the exceptional quality of the NSTO film. Notably, the observed position sensitivity attains an impressive value of 43.9 mV mm−1. Analysis of the lateral photovoltaic effect reveals response and relaxation times of approximately 105.6 ns and 4.49 µs, respectively. Intriguingly, fitting results for the relaxation time indicate minimal defects within the NSTO/TiN/Si heterostructures. These findings underscore the significant potential of NSTO/TiN/Si heterojunctions, presenting a promising avenue for their widespread application in the realm of position change technology.

Graphical Abstract

近年来，基于包晶体材料的紫外光探测器异质结的研究备受关注。本研究的重点是通过使用 TiN 薄膜作为缓冲层，在硅基底上制备高质量的单晶 Nb:SrTiO3 (NSTO) 薄膜。该研究深入探讨了薄膜表现出的横向光伏效应。利用 X 射线衍射和高分辨率透射电子显微镜进行的表征证实了 NSTO 薄膜的卓越品质。值得注意的是，观察到的位置灵敏度达到了令人印象深刻的 43.9 mV mm-1。对横向光伏效应的分析表明，响应时间和弛豫时间分别约为 105.6 毫微秒和 4.49 微秒。有趣的是，弛豫时间的拟合结果表明，NSTO/TiN/Si 异质结构中的缺陷极少。这些发现凸显了 NSTO/TiN/Si 异质结的巨大潜力，为其在位置变化技术领域的广泛应用提供了前景广阔的途径。

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引用次数: 0

Electron-Beam-Induced Formation of Oxygen Vacancies in Epitaxial LaCoO3 Thin Films 电子束诱导外延 LaCoO3 薄膜中氧空位的形成

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-10-30 DOI: 10.1007/s13391-023-00468-7

Seung Jo Yoo, Tae Gyu Yun, Jae Hyuck Jang, Ji-Hyun Lee, Changhyun Park, Sung-Yoon Chung

The formation of oxygen vacancies in heteroepitaxial LaCoO₃ thin films deposited on different substrates was investigated by using electron beam irradiation in atomic-scale scanning transmission electron microscopy (STEM). As the electron beam irradiation intensified, distinctive dark stripe patterns were identified in high-angle annular dark-field STEM images, demonstrating the formation and subsequent ordering of oxygen vacancies. A comprehensive quantitative analysis of the lattice parameter changes verified the significant expansion of unit cells associated with the presence of oxygen vacancies. In particular, a uniform distribution of these expanded unit cells was observed in the films under large tensile strain. These experimental findings emphasize the significant role of strain in generating oxygen vacancies in perovskite oxide materials.

Graphical Abstract

在原子尺度扫描透射电子显微镜（STEM）中使用电子束辐照研究了沉积在不同基底上的异质外延钴氧化物薄膜中氧空位的形成。随着电子束辐照的增强，在高角度环形暗场 STEM 图像中发现了明显的深色条纹图案，证明了氧空位的形成和随后的有序化。对晶格参数变化的综合定量分析证实，氧空位的存在使单位晶胞显著扩大。特别是，在拉伸应变较大的薄膜中，观察到这些扩展单元的均匀分布。这些实验发现强调了应变在包晶氧化物材料中产生氧空位的重要作用。

引用次数: 0

Electrochromic Performances of rGO-WO3 Thin Film and Its Application as an Integrated Device Powered with Quantum Dot-Sensitized Solar Cells rGO-WO3 薄膜的电致变色性能及其在量子点敏化太阳能电池集成设备中的应用

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-10-24 DOI: 10.1007/s13391-023-00464-x

Aryal Krishna Prasad, Jong-Young Park, Soon-Hyung Kang, Kwang-Soon Ahn

Reduced graphene oxide (rGO)-embedded WO₃ composite thin film (rGO-WO₃) is synthesized and investigated for its electrochromic performances. Furthermore, a novel application of quantum dot-sensitized solar cells (QDSSCs), to operate the rGO-WO₃ electrochromic devices (ECDs), is demonstrated with development of an integrated device. The co-existence of both WO₃ nanostructure and rGO sheet ameliorates the EC performances of composite thin film, compared to WO₃ thin film. The rGO-WO₃, possessing 0.1 g of rGO, nanocomposite shows an optimum optical contrast (%ΔT) of 66.3% and excellent optical stability displaying 1.7% degradation in %ΔT, while the WO₃ film only exhibits a %ΔT of 52.2% and, 4.2% of optical degradation. Incorporation of rGO sheet into the WO₃ nanostructure introduces de-agglomerated morphology, enhances electrochemically active surface area, and which facilitates the ion-transfer kinetics. The series-connected QDSSCs results an optimum open circuit voltage (V_oc) of 1.03 V upon 1 sun illumination, which is found to be adequate for the study of switching performances of ECDs. QDSSCs assisted rGO-WO₃ EC film exhibits a significant %ΔT of 43% and coloration time of 7 s. Additionally, QDSSCs device is illuminated with various light intensities to study the intensity and V_oc dependent EC performances of rGO-WO₃.

Graphical abstract

研究人员合成了还原氧化石墨烯（rGO）-嵌入式 WO3 复合薄膜（rGO-WO3），并对其电致变色性能进行了研究。此外，通过开发一种集成装置，展示了量子点敏化太阳能电池（QDSSC）在操作 rGO-WO3 电致变色装置（ECD）方面的新应用。与 WO3 薄膜相比，WO3 纳米结构和 rGO 薄膜的共存改善了复合薄膜的电致变色性能。含有 0.1 克 rGO 的 rGO-WO3 纳米复合材料的最佳光学对比度（%ΔT）为 66.3%，光学稳定性极佳，%ΔT 降解率仅为 1.7%，而 WO3 薄膜的%ΔT 降解率仅为 52.2%，光学降解率为 4.2%。在 WO3 纳米结构中掺入 rGO 片材，可引入去团聚形态，增加电化学活性表面积，促进离子转移动力学。串联的 QDSSC 在 1 太阳光照射下的最佳开路电压（Voc）为 1.03 V，足以满足研究 ECD 开关性能的需要。QDSSCs 辅助 rGO-WO3 电致发光薄膜显示出 43% 的显著 %ΔT 值和 7 秒的着色时间。

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引用次数: 0

Relationship Between Electrical Conductivity and Supercapacitor Properties of Co3O4 Nanofibers Fabricated by Electrospinning 电纺丝法制造的 Co3O4 纳米纤维的电导率与超级电容器性能之间的关系

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-10-24 DOI: 10.1007/s13391-023-00461-0

Hyo-Min Choi, Jong-Won Yoon

Co₃O₄ with a spinel structure has been utilized as supercapacitor materials due to their active surface sites, strong absorption capacity, excellent electrochemical activity, and stability. In this study, we tried to explore the optimized electrospinning conditions, including heat-treatment temperature for Co₃O₄ nanofiber fabrication for supercapacitor applications. The X-ray diffraction patterns of Co₃O₄ nanofibers annealed at 600 and 800 ºC showed a cubic spinel crystal structure without a secondary phase, but CoO was found in the specimens annealed at 400 ºC. From the XPS curve fitting, Co³⁺ increased in the Co³⁺/Co²⁺ ratio with increasing heat-treatment temperature. The electrical conductivity of the Co₃O₄ nanofibers heated at 400, 600, and 800 ºC is 7.53 × 10⁻³, 1.12 × 10⁻², and 6.26 × 10⁻³ Ω⁻¹ cm⁻¹, respectively. The Co₃O₄ nanofibers heat treated at 600 ºC showed the highest conductivity value, and the conduction mechanism was polaron hopping between Co³⁺ and Co²⁺. The supercapacitor properties of Co₃O₄ nanofibers are evaluated by cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance measurement using a three-electrode system in a 3 M KOH electrolyte. The GCD tests showed that the Co₃O₄ nanofibers heated at 600 ºC had the highest specific capacitance of 579.66 F/g. From the electrochemical impedance measurements, the charge transfer resistance (R_ct) of calcined Co₃O₄ nanofibers at 600 ºC showed the lowest value of 1.27 Ω. Also, the Co₃O₄ nanofiber exhibits excellent cycle stability with capacitance retention over 99% until 1000 cycles at a current density of 2 A/g. Therefore, the excellent supercapacitor performance of Co₃O₄ nanofibers annealed at 600 ºC is due to its nanofiber structure without a secondary phase providing a larger surface area and charge transfer.

Graphical Abstract

具有尖晶石结构的 Co3O4 因其表面活性位点、强大的吸收能力、优异的电化学活性和稳定性而被用作超级电容器材料。在本研究中，我们试图探索用于制造超级电容器用 Co3O4 纳米纤维的最佳电纺条件，包括热处理温度。在 600 ºC 和 800 ºC 下退火的 Co3O4 纳米纤维的 X 射线衍射图样显示出立方尖晶石晶体结构，没有第二相，但在 400 ºC 下退火的试样中发现了 CoO。从 XPS 曲线拟合结果来看，随着热处理温度的升高，Co3+/Co2+ 的比值增大。在 400、600 和 800 ºC 下加热的 Co3O4 纳米纤维的导电率分别为 7.53 × 10-3、1.12 × 10-2 和 6.26 × 10-3 Ω-1 cm-1。在 600 ºC 下热处理的 Co3O4 纳米纤维显示出最高的电导率值，其传导机制是 Co3+ 和 Co2+ 之间的极子跳变。在 3 M KOH 电解液中使用三电极系统，通过循环伏安法（CV）、电静态充放电法（GCD）和电化学阻抗测量法评估了 Co3O4 纳米纤维的超级电容器特性。GCD 测试表明，在 600 ºC 下加热的 Co3O4 纳米纤维的比电容最高，达到 579.66 F/g。电化学阻抗测量结果表明，在 600 ºC 下煅烧的 Co3O4 纳米纤维的电荷转移电阻（Rct）最低，为 1.27 Ω。此外，Co3O4 纳米纤维还表现出优异的循环稳定性，在电流密度为 2 A/g 的条件下，循环 1000 次后电容保持率超过 99%。因此，在 600 ºC 下退火的 Co3O4 纳米纤维之所以具有优异的超级电容器性能，是因为它的纳米纤维结构没有次级相，具有更大的表面积和电荷转移能力。

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引用次数: 0

Rationalized Molten-Salt Synthesis of Carbon-Enriched Pb-C Composite for Lead-Acid Battery Positive Electrode Grids 铅酸电池正极栅格富碳铅碳复合材料的合理熔盐合成

4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-10-10 DOI: 10.1007/s13391-023-00463-y

Jaewook Kim, Jahun Koo, Byungwoo Park, Chunjoong Kim, Chong Rae Park

引用次数: 0

Spin Route Flipping in FeCo/RR-P3HT/ NiFe Organic Spin-Valve Device FeCo/RR-P3HT/ NiFe 有机自旋阀器件中的自旋路线翻转

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-09-28 DOI: 10.1007/s13391-023-00460-1

Manikandan Gunasekaran, Dhanalakshmi Dhandapani, Manivel Raja Muthuvel

An organic semiconductor (OSC) is a potential material in spintronics which is posses a long spin diffusion length due to its low spin-orbit coupling and hyperfine interaction. Among the OSC P3HT that already exists, in spintronic devices. In this report, An organic spin valve (OSV) device was fabricated using Regioregular Poly 3-hexylthiophene-2,5- diyl (RR-P3HT). The RR-P3HT was used as a spacer layer, with FeCo and NiFe used as bottom and top electrodes, respectively. The device magnetoresistance (MR) was observed to be a positive MR of 2.9% at 50 K while negative MR of 0.6, 0.4, and 0.014% were observed at 150, 200, and 300 K, respectively. Observed AMR is positive at room temperature for Feco and NiFe single layer as 0.08 and 0.18%, respectively. The magnetic electrodes were prepared using Ultra High Vacuum DC magnetron sputtering, and RR-P3HT was prepared using a spin coater. The magnetic properties of the device were studied by vibrating sample magnetometer (VSM) analysis. The VSM results conclude that both electrodes are magnetic materials with different coercive forces. The FeCo and NiFe, both electrodes crystal structures were analyzed from Gracing Incidence X-Ray Diffraction (GI-XRD) using Cobalt K alpha. FeCo and NiFe were the Body-Centered Cubic crystal structures, and the electrode’s JCPDS card numbers are 50–0795 and 37–0474, respectively.

Graphical Abstract

有机半导体（OSC）是一种潜在的自旋电子学材料，由于其自旋轨道耦合和超细相互作用较低，因此具有较长的自旋扩散长度。在已有的自旋电子器件中，P3HT 是一种有机半导体。在本报告中，我们使用 Regioregular Poly 3-hexylthiophene-2,5- diyl (RR-P3HT) 制作了一个有机自旋阀（OSV）器件。RR-P3HT 用作间隔层，FeCo 和 NiFe 分别用作底部和顶部电极。器件磁阻（MR）在 50 K 时为正 2.9%，而在 150、200 和 300 K 时分别为负 0.6%、0.4% 和 0.014%。在室温下观察到的 Feco 和 NiFe 单层 AMR 分别为 0.08% 和 0.18%。磁电极采用超高真空直流磁控溅射法制备，RR-P3HT 采用旋涂机制备。通过振动样品磁力计（VSM）分析研究了该器件的磁性能。VSM 分析结果表明，两种电极都是具有不同矫顽力的磁性材料。利用钴 K 阿尔法入射 X 射线衍射（GI-XRD）分析了铁钴和镍铁合金这两种电极的晶体结构。FeCo和NiFe为体心立方晶体结构，电极的JCPDS卡号分别为50-0795和37-0474。

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引用次数: 0

Electrodeposited Palladium Coating on Co Micro-Nano Cones Array for Low-Temperature Solid-State Bonding 用于低温固态键合的钴微纳米锥阵列上的电沉积钯涂层

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-09-25 DOI: 10.1007/s13391-023-00462-z

Jiunan Xie, Hua Hu, Peixin Chen, Han Lei, Anmin Hu, Yunwen Wu, Ming Li

A low-temperature solid-state bonding technology using palladium-coated Co micro-nano cones array (MCA) and Sn-3.0Ag-0.5Cu (wt%) solder was investigated. The Pd modification layer on the surface of Co MCA reduced the growth of oxide film. Low-temperature solid-state bonding was achieved using Co/Pd MCA under the bonding condition of 750 gf, 175 °C and 150 s with the shear strength of 49.55 MPa, and there was no void found along the bonding interface. Microscopic observation revealed that Co/Pd MCA was fully embedded in the soft solder. The average shear strength of the bonding joint was measured and demonstrate that Co/Pd MCA has higher reliability than Co MCA. This work highlights the advantages of bonding based on Co/Pd MCA, which has great potential for extensive practical applications.

Graphical Abstract

研究了使用钯涂层钴微纳锥阵列（MCA）和锡-3.0Ag-0.5Cu（重量百分比）焊料的低温固态接合技术。Co MCA 表面的钯改性层减少了氧化膜的生长。在 750 gf、175 °C、150 s 的粘合条件下，Co/Pd MCA 实现了低温固态粘合，剪切强度为 49.55 MPa，粘合界面没有发现空隙。显微观察表明，Co/Pd MCA 完全嵌入了软焊料中。测量了接合点的平均剪切强度，结果表明 Co/Pd MCA 比 Co MCA 具有更高的可靠性。这项工作凸显了基于 Co/Pd MCA 的键合技术的优势，具有广泛的实际应用潜力。

引用次数: 0

Thermoelectric Transport Properties of Co0.5Fe0.5Se2, Co0.5Fe0.5Te2, and Their Solid-Solution Compositions Co0.5Fe0.5Se2、Co0.5Fe0.5Te2 及其固溶体化合物的热电传输特性

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-09-22 DOI: 10.1007/s13391-023-00459-8

Sang Jeong Park, Seyun Kim, Okmin Park, Se Woong Lee, Sang-il Kim

Transition-metal chalcogenides with tunable electronic transport properties and unique crystal structures have attracted much attention as potential thermoelectric materials. In this study, the electrical, thermal, and thermoelectrical transport properties of Co_0.5Fe_0.5Se₂, Co_0.5Fe_0.5Te₂ and a series of solid-solution compositions (Co_0.5Fe_0.5(Se_1−yTe_y)₂, y = 0.25, 0.5, and 0.75) were investigated. Co_0.5Fe_0.5Se₂ and Co_0.5Fe_0.5Te₂ polycrystalline alloys exhibited high power factors of 1.37 and 1.53 mW/mK² at 600 K, respectively, and their solid-solution compositions exhibited lower power factors between 0.38 and 0.81 mW/mK². The lattice thermal conductivities of Co_0.5Fe_0.5Se₂ and Co_0.5Fe_0.5Te₂ were 2.87 and 1.71 W/mK at 300 K, respectively, and their solid-solution compositions exhibited lower lattice thermal conductivities between 0.96 and 1.98 W/mK. Consequently, the thermoelectric figure of merit (zT) of the Co_0.5Fe_0.5Se₂ and Co_0.5Fe_0.5Te₂ polycrystalline alloys was 0.16 and 0.18 at 600 K, respectively, and the zT of their solid-solution composition exhibited lower values between 0.04 and 0.09. As the solid-solution composition exhibited a lower thermoelectric performance than the Co_0.5Fe_0.5Se₂ and Co_0.5Fe_0.5Te₂ polycrystalline alloys, the lower thermoelectric performance was analyzed and discussed.

Graphical Abstract

作为一种潜在的热电材料，具有可调电子传输特性和独特晶体结构的过渡金属卤化物备受关注。本研究调查了 Co0.5Fe0.5Se2、Co0.5Fe0.5Te2 和一系列固溶体成分（Co0.5Fe0.5(Se1-yTey)2, y = 0.25、0.5 和 0.75）的电学、热学和热电传输特性。Co0.5Fe0.5Se2 和 Co0.5Fe0.5Te2 多晶合金在 600 K 时的功率因数分别高达 1.37 和 1.53 mW/mK2，而其固溶体成分的功率因数则较低，介于 0.38 和 0.81 mW/mK2 之间。在 300 K 时，Co0.5Fe0.5Se2 和 Co0.5Fe0.5Te2 的晶格热导率分别为 2.87 和 1.71 W/mK，它们的固溶体成分表现出较低的晶格热导率，介于 0.96 和 1.98 W/mK 之间。因此，在 600 K 时，Co0.5Fe0.5Se2 和 Co0.5Fe0.5Te2 多晶合金的热电功勋值（zT）分别为 0.16 和 0.18，而其固溶体成分的 zT 值较低，介于 0.04 和 0.09 之间。由于固溶体成分的热电性能低于 Co0.5Fe0.5Se2 和 Co0.5Fe0.5Te2 多晶合金，因此对其较低的热电性能进行了分析和讨论。

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引用次数: 0

Copper, Palladium, and Reduced Graphene Oxide Co-doped Layered WS2/WO3 Nanostructures for Electrocatalytic Hydrogen Generation 用于电催化制氢的铜、钯和还原石墨烯氧化物共掺杂层状 WS2/WO3 纳米结构

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters

Pub Date : 2023-09-12 DOI: 10.1007/s13391-023-00458-9

Vipin Kumar, Rajneesh Kumar Mishra, Le Gia Trung, Pushpendra Kumar, Sagar M. Mane, Jae Cheol Shin, Jin Seog Gwag

Fossil fuels have a vital role in global energy resources. The burning of fossil fuels produces pollutants and harms the environment. These environmental problems can be solved by searching for a substitute for fossil fuels. Hydrogen production by water electrolysis has emerged as a promising substitute. It is a green, clean, and renewable energy source. Low-cost water is abundant on the Earth. The metal and its composite material have been used to develop water electrolysis. Among these composite catalytic materials, WS₂/WO₃ composite catalyst is well-known for its excellent physical and chemical behavior in water electrolysis to produce hydrogen. Engineered catalysts can further enhance the catalytic performance. Therefore, we investigate and analyze the catalytic performance of copper (Cu), palladium (Pd), and r-GO co-doped WS₂/WO₃ composite material for water electrolysis to produce green, clean, and renewable hydrogen energy by hydrogen evolution reaction (HER). The hydrothermal synthesis method is used to prepare the WS₂/WO₃ composite material co-doped with Cu, Pd, and r-GO. The co-doping is favorable for fast charge transfer by providing many active catalytic sites for HER and enhancing the HER catalytic performance. Therefore, the co-doped tungsten disulfide/oxide could be a potential composite material for efficient water electrolysis for clean and renewable hydrogen production by electrochemical water electrolysis.

Graphical Abstract

化石燃料在全球能源资源中发挥着至关重要的作用。化石燃料的燃烧会产生污染物，对环境造成危害。这些环境问题可以通过寻找化石燃料的替代品来解决。水电解制氢已成为一种前景广阔的替代品。它是一种绿色、清洁和可再生能源。地球上有大量低成本的水。金属及其复合材料已被用于开发水电解。在这些复合催化材料中，WS2/WO3 复合催化剂因其在电解水制氢过程中优异的物理和化学性能而闻名。工程催化剂可进一步提高催化性能。因此，我们研究并分析了铜（Cu）、钯（Pd）和r-GO共掺杂的WS2/WO3复合材料在水电解中的催化性能，以利用氢进化反应（HER）生产绿色、清洁和可再生的氢能。该研究采用水热合成法制备了共掺杂 Cu、Pd 和 r-GO 的 WS2/WO3 复合材料。共掺杂为 HER 提供了许多活性催化位点，有利于电荷的快速转移，从而提高 HER 的催化性能。因此，共掺杂的二硫化钨/氧化物可以成为一种潜在的复合材料，用于高效电解水，通过电化学电解水法生产清洁和可再生氢气。

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引用次数: 0