JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Hao Feng,Junhua Li,Yuqing Liu,Zhifeng Xu,Ying Cui,Mengqin Liu,Xing Liu,Lingzhi He,Jianbo Jiang,Dong Qian
In this work, cubic MnSe 2 nanoparticles were firstly synthesized through a simple one-step hydrothermal procedure at low temperature using N 2 H 4 ·H 2 O as a reductant as well as MnCl 2 and Se powders as precursors. The crystalline structure, morphology, chemical composition, and element valence states of the synthesized samples were specifically investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray photoelectron spectra (XPS), and Raman spectroscopy. It was found that the MnSe 2 product mainly exists in a roughly cubic morphology with the sizes between 20 and 50 nm. In order to alleviate the aggregation, cubic MnSe 2 nanoparticles were further ultrasonically dispersed on the surface of multi-walled carbon nanotubes (MWCNTs) to achieve an improved stability structure denoted as MnSe 2 /MWCNTs. Compared with the single components, the MnSe 2 /MWCNTs composite displays enhanced electrochemical sensing signals for chloramphenicol (CAP) derived from the synergistic catalytic performance of the corresponding components. After optimization of electrochemical assay parameters, an assay range of 8.00–5000.00 μM and a limit of detection (LOD) with 2.00 μM for CAP were obtained using the MnSe 2 /MWCNTs-based sensor. Finally, the application of the resulting sensor for CAP detection in food and biological fluids was evaluated with recoveries between 94.70 and 106.70 %, demonstrating that MnSe 2 /MWCNTs could be served as a preeminent sensing platform. To the best of our knowledge, this is the first report on the fabrication of MnSe 2 -based composite for electrochemical sensing applications.
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2021
·
IF 6.583
Lei Liu,Zijian Zhou,Changqing Wang,Jie Xu,Hongqiang Xia,Guozhang Chang,Xiaowei Liu,Minghou Xu
Co 3 O 4 has been regarded as one of the most promising materials for redox energy storage due to its high theoretical conversion and complete redox reversibility. However, when undergoing charge-discharge cycles at high temperature, the material becomes sintered. The reversibility of the cobaltous oxides highly deteriorates, and the reoxidation reaction rate notably decreases. In addition, the obvious thermal hysteresis in the redox reaction process also limits the energy storage performance of the material. In this work, Co 3 O 4 with different micro-nanostructured morphologies is synthesized to evaluate its thermochemical energy storage performance. The capacity of the synthesized and commercial Co 3 O 4 is tested by thermogravimetric analysis (TGA). The fresh and recycled oxides are well characterized. Results suggest that all samples show complete reversibility, and the conversion decreases slightly after 30 cycles. The synthesized samples show better performance, especially cubic Co 3 O 4 . The reoxidation rate of the commercial sample is approximately 150 μmol/min/g, but that of the cubic sample is approximately 300-200 μmol/min/g in the first five cycles. The oxidation rate of the cubic sample decreases and finally remains at about 180 μmol/min/g from the 5th cycle to the 30th cycle. After 5 charge-discharge cycles, the commercial Co 3 O 4 is severely sintered, while the cubic oxides are only slightly sintered. After 30 redox cycles, the morphology of commercial oxides completely changed, while that of the cubic oxide retains the approximate shape of a cube. Moreover, the thermal hysteresis values of the commercial and cubic Co 3 O 4 are 24.7°C and 10.1°C, respectively, suggesting that the energy loss of cubic oxides is much smaller. The higher exothermic temperature of the cubic Co 3 O 4 redox process also indicates that it can supply high-grade thermal energy.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2023
·
IF 3.8
Yang Lu,Yixin Ma,Jiang Zhu,Hongyu Lu,Hua Zou
Zirconia (ZrO2) is an excellent host material in the luminescent materials field because of its low phonon energy. Nevertheless, owing to a very high melting point of 2715 °C, preparation of cubic ZrO2 by the solid-state reaction must be done at high temperatures (>1400 °C). Here, we report a molten salt method (MSS) process to obtain rare earth-doped cubic ZrO2 phosphors in an air environment at 1200 °C, which has a relatively low preparation temperature with submicrometer size and fine control over the crystal morphology. Consequently, we successfully synthesized upconverting multicolor ZrO2 submicron phosphors by tuning the activators with a Yb3+ sensitizer under 980 nm excitation. Additionally, the submicron phosphors exhibit multifunctional applications, notably in temperature sensor and anticounterfeiting fields.
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2026
·Vol. 45
·期 4
·e70203
·
IF 12.1
Haifeng Tian,Haowei Huang,Zhiyu Chen,Fei Zha,Hongshan Chen,Ruiying Ding,Yu Zhang,Hao Wei,Yuzhong Mao,Irshad Hussain,Zhicheng Zhang
en Thermally driven hydrogenation of CO 2 to light olefins (C 2 = –C 4 = ) using metal oxide-zeolite tandem catalysts is an effective strategy for achieving carbon neutrality. However, progress in this area is constrained by zeolite pore transport limitations, acid-site inactivation, and surface carbon poisoning. To address these issues, we replaced conventional zeolites with La-modified ZIF-8 and combined it with hollow cubic In 2 O 3 to develop a novel In 2 O 3 -La-ZIF-8 tandem catalyst. Our study investigates the effects of the hydrothermal reaction temperature used for synthesizing In 2 O 3 and the La content in ZIF-8 on catalytic performance. We also found that the oxygen vacancy (O V ) concentration in In 2 O 3 can be substantially regulated by adjusting the hydrothermal temperature. The In 2 O 3 sample with the highest O V concentration not only promotes the formation of reaction intermediates but also markedly reduces the energy barrier of the rate-determining step in methanol synthesis. Comprehensive characterization and simulation analyses indicate that La incorporation enhances the thermal stability of ZIF-8, improves its ability to adsorb and activate reaction intermediates, and effectively adjusts its acid-base properties. Under a reaction pressure of 3.0 MPa and a temperature of 360°C, the hollow cubic In 2 O 3 -La-ZIF-8 tandem catalyst achieves 23.5% CO 2 conversion with 65.3% C 2 = –C 4 = selectivity. 摘要 zh 利用金属氧化物-分子筛串联催化剂 , 通过热驱动将CO 2 转化为低碳烯烃(C 2 = –C 4 = ) , 是实现碳中和的有效策略。然而 , 该领域的发展受到分子筛孔道传质限制、酸性位点失活及表面积碳等问题的制约。为解决这些难题 , 本研究以La修饰的ZIF-8替代传统分子筛 , 并将其与空心立方体In 2 O 3 相结合 , 开发了一种新型的In 2 O 3 -La-ZIF-8串联催化剂。系统探究了In 2 O 3 水热合成温度以及ZIF-8中La含量对催化剂性能的影响。通过调节水热温度可显著调控In 2 O 3 中的氧空位浓度 , 具有最高氧空位浓度的In 2 O 3 样品不仅能促进反应中间体的生成 , 还可显著降低甲醇合成过程中决速步骤的能垒。综合表征与模拟分析表明 , La的引入增强了ZIF-8的热稳定性 , 提升了其对反应中间体的吸附与活化能力 , 并有效调节了其酸碱性质。在3.0 MPa、360°C的反应条件下 , 空心立方In 2 O 3 -La-ZIF-8串联催化剂上实现了23.5%的CO 2 转化率与65.3%的低碳烯烃选择性。
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Cheng Guo,Runze Yu,Song Qi,Wenfeng Hao,Jia He,Hao Chen,Lishan Shen,Fangjie Xiang,Fanjun Liu,Yanping Li,Dayu Yan,Bo Zhang,Jianyue Jiao,Yu Chen,Zhengyan Lun
Li-ion conducting oxides with high electrochemical stability and bulk conductivity represent a critical component for solid-state Li metal batteries. Among them, the recently reported face-centered cubic (FCC) oxide with face-sharing Li configuration offers broad chemical space, good compatibility with oxide-type cathodes fast Li+ transport and exceptional oxidative stability. However, the investigation of this emerging family of superionic conductors has largely been limited at the material level, and their incorporation into practical solid-state battery (SSB) systems remains unexplored. In this work, we focus on the cell-level application of a model FCC-type superionic conductor, Li17In9SnO24 (LISO). We identify a critical challenge of incorporating this emerging class of material into practical SSB due to the severe interfacial incompatibility with Li metals, primarily caused by the reduction of In3+. We further demonstrate that such instability can be mitigated via a polymer−ceramic composite strategy. By encapsulating LISO particles with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), interfacial alloying with Li is effectively suppressed, enabling stable Li plating/stripping with low interfacial resistance. The resulting dual-functional composite electrolyte can then be stable cycling in both solid-state and quasi-solid-state batteries with various cathodes. This work marks the first demonstration of an FCC-type oxide superionic conductor in practical cell configuration, bridging the gap between material discovery and device application. Our composite strategy provides a viable path toward deploying high-conductivity FCC-structured electrolytes in next-generation solid-state battery technologies.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yulong Liu,Huanyan Xu,Zhen Chen,Bo Li,Qian Liu,Serguei V. Savilov,Minghua Chen
Solid-state lithium metal batteries (SSLMBs) have great potential as high-energy-density, high-power, and safe energy storage devices. Solid polymer electrolytes based on polyvinylidene fluoride-poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-(PVDF-HFP)) have attracted significant attention due to their high ionic conductivity at room temperature, good flexibility, and unique ion transport properties, making them promising candidates for commercial applications. However, PVDF-based composite solid polymer electrolytes (CSPEs) exhibit poor lithium-ion transport properties and are prone to chemical reactions with the lithium metal surface, posing the risk of forming lithium dendrites. This degradation results in reduced battery performance and cycle life. This work investigates the effects of Co-doped cubic-ZrO 2-x (C-ZrO 2-x ), a filler with abundant oxygen vacancies, on the electrochemical properties of PVDF-based CSPE. Zirconium in zirconia can provide Lewis acid sites, while oxygen vacancies can adsorb TFSI − and exhibit a pronounced ability to dissociate lithium salt and accumulate anchored anions. These effects are further amplified after phase transition, from unstable monoclinic phase with a small amount of oxygen vacancies to cubic phase with abundant oxygen vacancies, leading to a higher proportion of free Li + in PVDF-based CSPE. Additionally, the uniform distribution of solid electrolyte interphase with a single LiF component, indicates that C-ZrO 2-x increases the interface stability between electrolyte and lithium metal. The corresponding Li||Li symmetrical cells show a stable cycle lifetime of 730 h at 0.1 mA cm −2 . The specific discharge capacity of Li|CSPE|LiFePO 4 reaches 106.09 mAh g −1 at 1 C. Even after 550 cycles, the capacity retention rate is still 92.13 %. These findings ideally contribute to an effective way to achieve high performance and long cycle life of solid-state lithium metal batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2025
·
IF 4.6
Xu Xia,Chenyang Ma,Tianen Yang,Zhiyuan Ma,Yu Cao,Jiahuan He,Qiwen Zheng,Huaping Hong,Ji Xiong
This study investigates gradient cemented carbide with a cubic phase-free surface layer (CFL), commonly used as substrates for coated inserts to extend their service life. The tough gradient surface layer effectively prevents crack propagation, minimizing coating delamination and edge chipping. We propose using hexagonal boron nitride (h-BN) as a non-cubic nitrogen source for fabricating gradient cemented carbide with cubic (W,Ti)C, as a replacement for traditional cubic nitrogen sources. By employing powder metallurgy, we successfully created gradient cemented carbide with a CFL derived from h-BN. We also analyze the mechanism of gradient structure formation and characterize the microstructure, elemental distribution, and mechanical properties of the novel materials. The results demonstrate the feasibility of producing gradient cemented carbides with a CFL when h-BN is used as the nitrogen source. The crystal orientations at the gradient boundary are randomly distributed, showing no abrupt interface between the surface layer and the interior. Notably, titanium (Ti) and boron (B) are nearly absent in the surface layer, while cobalt (Co) shows higher concentration compared to the interior. The use of h-BN facilitates a nearly homogeneous titanium distribution in the subsurface zone, contrasting with the clustering seen when traditional cubic TiN is employed as the nitrogen source. Additionally, the thickness of the gradient surface layer can be effectively controlled by adjusting the h-BN levels, increasing with higher h-BN content in the raw materials. However, excessive h-BN addition facilitates abnormal WC phase growth in cemented carbides, and negatively affects transverse rupture strength despite the toughening effects of the cubic phase-free layer. Increased h-BN content also promotes the formation of TiB phases, which enhances the hardness of the cemented carbide.
研究领域:
材料科学
·
粉末冶金
✓ 已验证
产品关联
DOI
高影响因子
SENSORS
·
2025
·Vol. 25
·期 7
·2312
·
IF 3.5
Hongfei Hou,Ziyin Xiang,Chaonan Zhi,Haodong Hu,Xingyu Zhu,Baoru Bian,Yuanzhao Wu,Yiwei Liu,Xiaohui Yi,Jie Shang,Run-Wei Li
Flexible magnetic tactile sensors hold transformative potential in robotics and human–computer interactions by enabling precise force detection. However, existing sensors face challenges in balancing sensitivity, detection range, and structural adaptability for sensing force. This study proposed a pre-compressed magnetization method to address these limitations by amplifying the magnetoelastic effect through optimized magnetization direction distribution of the elastomer. A body-centered cubic lattice-structured magnetoelastomer featuring regular deformation under compression was fabricated via digital light processing (DLP) to validate this method. Finite element simulations and experimental analyses revealed that magnetizing the material under 60% compression strain optimized magnetization direction distribution, enhancing force–magnetic coupling. Integrating the magnetic elastomer with a hall sensor, the prepared tactile sensor demonstrated a low detection limit (1 mN), wide detection range (0.001–10 N), rapid response/recovery times (40 ms/50 ms), and durability (>1500 cycles). By using machine learning, the sensor enabled accurate 3D force prediction.
研究领域:
材料科学
·
传感器技术
·
力学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materiomics
·
2022
·Vol. 8
·期 5
·982-991
·
IF 8.589
Haonan Shi,Changrong Guo,Bingchao Qin,Guangtao Wang,Dongyang Wang,Li-Dong Zhao
The wide-bandgap cubic-structure semiconductor In 4 SnSe 4 can be regarded as a product of compositing two typical layered thermoelectric materials SnSe and In 4 Se 3 . Remarkably, In 4 SnSe 4 inherited low thermal conductivity from its parent materials. To advance the potential thermoelectric property of In 4 SnSe 4 , we systematically investigated its crystal structure and the origin of the intrinsic low thermal conductivity. In 4 SnSe 4 crystallized in a cubic phase (space group P a 3 ¯ ), with the lattice parameters of a = b = c = 12.66 Å. The anisotropy of In Se bonds in the lattice determined the complex structure of In 4 SnSe 4 with 72 atoms in the primitive cell. More importantly, sound velocity and elastic properties unclosed the strong anharmonicity in In 4 SnSe 4 , which contributed greatly to the low thermal conductivity. With first-principles calculations, it was found that the lone-pair electrons from In + mainly caused the anharmonicity in the lattice. Additionally, Br was proved to be an effective dopant for In 4 SnSe 4 to improve the electrical transport properties. This work indicated that the complex wide-bandgap semiconductor In 4 SnSe 4 with cubic phase and intrinsic low thermal conductivity was a new promising thermoelectric material with appropriate doping.
研究领域:
材料科学
·
热电学
·
凝聚态物理
·
晶体学
·
计算材料科学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 6
·1754-1763
·
IF 6.1
Qingqing Huang,Liyun Cao,Yuhang Wang,Jiayin Li,Yiting Wang,Shiyin Wei,Shuzhuo Bai,Koji Kajiyoshi,Yijun Liu,Zhenjiang Li,Jianfeng Huang
Tungsten disulfide (WS2) presents a layered structure with a high theoretical capacity (433 mA h g−1) in potassium-ion batteries, making it a promising anode material. However, its kinetics is poor with limited practical capacity and it is still a challenge to design new structures to improve its kinetics. In this work, a hollow Cu9S5/C/WS2 composite structure is designed. It is used as an anode in potassium-ion batteries (PIBs) with a high reversible capacity (406 mA h g−1 after 150 cycles at 200 mA g−1) and excellent rate performance (246 mA h g−1 at 20 A g−1). These results are attributed to its unique hollow composite structure, where the WS2 sheets are pinned on hollow cubic carbon by Cu9S5 nanowires. On one hand, the introduction of Cu9S5 nanowires expands the layer spacing of WS2 and forms a K+ fast diffusion channel. On the other hand, hollow carbon and Cu9S5 nanowires form a fast electron transmission path, which improves the charge transport rate. Additionally, the use of hollow carbon and Cu9S5 nanowires as a framework enhances structural stability. The synergistic effect of these aspects finally realizes fast and stable K+ storage. This work provides a new insight into the design of high-performance potassium storage devices using layered metal sulfides.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 13
·4228-4235
·
IF 0
Yu Bai,Ran Long,Chengming Wang,Ming Gong,Yanrui Li,Hao Huang,Hui Xu,Zhengquan Li,Mingsen Deng,Yujie Xiong
A method has been developed for controlled epitaxial growth on cubic nanocrystals by selectively activating their surface via etching. For example, it produces Pd concave nanocubes via seeding growth on their corners and edges, and in turn, formulates highly active sites for catalysis. This method offers a better capability of preventing atomic addition on undesired locations and maintaining particle size in the seeding process, as compared with the previous technique. With the particle size well maintained, the products fully exhibit superior electrocatalytic performance enabled by active sites and high-index facets in formic acid oxidation. Another contribution of this work is to enable the growth of a noble metal with high catalytic activities on another type of cheaper metal, which greatly reduces the usage of expensive materials while retaining high catalytic activity. In this article, we have demonstrated the deposition of a very limited amount of Pt (only 3.3 wt%) on Pd nanocrystals towards high electrocatalytic activities in an oxygen reduction reaction. Preliminary studies demonstrate that the synthetic strategy can be also applied to the controllable deposition of a different material on the faces of a nanocrystal by simply altering surface conditions.
研究领域:
材料化学
·
纳米科学与技术
·
催化化学
·
电化学
·
表面科学
·
功能纳米材料
✓ 已验证
DOI
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 13
·10489-10498
·
IF 2.22
Wang Shitong,Wang Jiemei,Ji Xiang,Meng Jiaxi,Sui Yanwei,Wei Fuxiang,Qi Jiqiu,Meng Qingkun,Ren Yaojian,He Yezeng,Zhuang Dongdong
Metal hydroxide serving as a promising electrode material for the supercapacitors, has attracted considerable interests in the area of energy storage. However, the low cycling stability and electrical conductivity restrict its further application. Here, a kind of hollow-cubic Ni(OH) 2 /CuS 2 with excellent electrochemical performance has been prepared via a facile one-step sacrificial template method. The obtained Ni(OH) 2 /CuS 2 shows an outstanding specific capacitance of 1174 F g −1 at 1 A g −1 with 73.9% retention after 2000 charge–discharge cycles. Furthermore, the assembled asymmetric supercapacitors based on hollow-cubic Ni(OH) 2 /CuS 2 nanocomposite and reduced graphene oxide (RGO) exhibits a high specific energy density of 27.8 Wh kg −1 at the power density of 390 W kg −1 .
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）