Materials Today Electronics
·
2024
·
IF 0
Guanzheng Luo,Wang Li,Yingchao Wei,Yao Dai,Wenjie Shu,Linyao Wu,Xin Li,Yubo Luo,Junyou Yang
Cu 3 InSnSe 5 is a newly discovered copper-based diamond-like thermoelectric semiconductor, whose thermoelectric performance can be further enhanced by the MnSe alloying herein. We observed the formation of MnSe 2 precipitates that effectively scattered low-frequency phonons, which significantly reduced the lattice thermal conductivity at mid-to-low temperatures. While a high amount of MnSe alloying led to the formation of MnSe 2 precipitates which enhanced the phonons scattering, a smaller MnSe content improved the power factor in a certain as well. Ultimately, our research achieved a peak ZT of 1.00 and an average ZT of 0.50 over the 300–773 K temperature range by 10 mol.% MnSe alloyed Cu 3 InSnSe 5 pseudo-binary solid solution, demonstrating the potential of MnSe alloying for optimizing the thermoelectric performance of copper-based diamond-like semiconductor materials.
研究领域:
材料科学
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凝聚态物理
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半导体物理
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能源材料
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热电转换
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DOI
ChemElectroChem
·
2019
·Vol. 6
·期 17
·4437-4443
·
IF 3.975
Yiqun Du,Shimeng Zhao,Cheng Xu,Wenyang Zhang,Shuming Fan,Pan Li,Huixin Jin,Youjian Zhang,Jianxin Zhang
Graphical Interc-Al-ation for batteries : A high-capacity cathode with porous α-MnSe is designed for rechargeable aluminum batteries. The fundamental reaction mechanism of the α-MnSe cathode is deeply researched in the manuscript. The synergistic effect of nanostructure and porosity could efficiently mitigate volume changes of the α-MnSe and enhance intercalation kinetics of Al 3+ , which sheds new light on the establishment of advanced energy-storage devices. Aluminum batteries (ABs) have been considered as a viable candidate for new-generation energy-storage devices due to its low cost and high theoretical volumetric capacity. Despite these advantages, the large-scale application of ABs is constrained by scarce options of suitable cathode materials. Herein, three-dimensional nanostructured α-MnSe microspheres with porous properties are reported as a cathode for ABs. The nanosized and porous structure of α-MnSe could offer numerous open channels and the short ionic transport path, which would efficiently mitigate volume changes and enhance electrochemical reaction kinetics. Moreover, the pseudocapacitive characteristic of Al 3+ storage in α-MnSe contributes to the fast kinetics of the cathode. It is demonstrated that the reversible Al 3+ insertion/extraction occurs in the α-MnSe cathode during the cycling process. The resulting aluminum battery based on the α-MnSe cathode, AlCl 3 /[EMIm]Cl ionic liquid electrolyte, and aluminum anode exhibits an ultrahigh reversible capacity of 408 mA h g −1 at 0.2 A g −1 . Even for a current density at 1 A g −1 , a discharge capacity of 131 mA h g −1 could be retained with a Coulombic efficiency of 97 % over 150 cycles. This strategy has referential significance in aspects of the selection of compatible cathode for ABs.
研究领域:
材料科学
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电化学
·
能量存储
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Peng Zhou,Libao Chen,Mingyu Zhang,Qizhong Huang,Chao Cui,Xiu Li,Liping Wang,Liewu Li,Cheng Yang,Yuhao Li
Long-cycle-life and high-capacity nitrogen-doped carbon-coated α-MnSe nanofibers (α-MnSe/N-CNFs) electrodes were prepared by using an electrospinning process. The one-dimensional structural of α-MnSe/N-CNFs possesses great stability and play a key role in obtaining a long-cycle life for lithium-ion batteries. With nitrogen doping, improved pseudocapacitive behavior and conductivity were observed and the reversible capacity of the was increased to 956.3 mA h g −1 at 0.2 A g −1 after 200 cycles. The discharge capacity of α-MnSe/N-CNFs after 500 cycles reached 613.0 mA h g −1 even at a high current density of 1 A g −1 . The excellent electrochemical performance of α-MnSe/N-CNFs holds great promise as a candidate anode material for high-performance lithium-ion batteries.
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
ACS Applied Energy Materials
·
2022
·
IF 6.959
Jie Xu,Cuili Xiang,Sensen Yu,Yongjin Zou,Songwen Fang,Zhicong Hu,Fen Xu,Lixian Sun
Transition-metal selenide materials have the potential to be excellent power storage materials owing to their unique physical and structural features. The porous yolk-shelled NiMnSe3 nanospheres synthesized by a two-step hydrothermal and thermal treatment process were used as anode electrode materials for an asymmetric supercapacitor (ASC). The unique yolk-shelled structure and the bimetallic synergistic effect contributed to the improved charge transfer capability of the ASC. With density functional theory calculations, the NiSe2–MnSe heterojunctions illustrate the synergy between NiSe2 and MnSe components along with the charge transfer path at the heterogeneous interface. The NiMnSe3 electrode material has excellent electrochemical properties in the three-electrode system (1093 F g–1 at 0.5 A g–1). The ASC using the NiMnSe3 anode with an activated carbon cathode exhibited a maximum energy density of 74.5 Wh kg–1 and a maximum power density of 8259.3 W kg–1, retaining 99.5% of the initial capacitance after 12,000 cycles. This shows that metal selenide heterojunctions have promising potential for supercapacitor as ASCs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Fengmin Qiao,Qingqing Qi,Zhenzhen Wang,Ke Xu,Shiyun Ai
Manganese selenide (MnSe) nanoparticles as nanocatalysts may present enhanced peroxidase-like catalysis if loaded on conductive graphite carbon nitride (g-C 3 N 4 ) supports. In this work, MnSe nanoparticles were successfully loaded on the surface of polymeric g-C 3 N 4 as a cocatalyst through a thermal condensation method by calcinating the mixture of pure MnSe, dicyandiamide and cyanuric acid . The morphology and composition of thus-prepared MnSe loaded doped graphite phase carbon nitride nanosheets (MnSe-g-C 3 N 4 ) were characterized by transmission electron microscopy (TEM), high resolution TEM , X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra and X-ray photoelectron spectroscopy (XPS). Structural analyses revealed that the MnSe-g-C 3 N 4 nanoparticles are composed of ultrathin nanosheets with 20 nm lateral diameter. Compared with original MnSe and g-C 3 N 4 , the prepared MnSe-g-C 3 N 4 nanosheets could achieve higher aqueous stability and, especially, much stronger peroxidase-like catalysis, presumably resulting from the synergetic effects of conductive carbon nitride and lamellate MnSe nanocatalysts effectively loaded. Significantly, MnSe-g-C 3 N 4 nanosheets were proved to be novel peroxidase mimetics which could quickly catalyze oxidation of the peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H 2 O 2 , producing a blue colored solution. Kinetic analysis indicates that the catalytic behavior satisfy typical Michaelis–Menten kinetics and follows a ping-pong mechanism. Colorimetric detections of H 2 O 2 and glucose using the MnSe-g-C 3 N 4 nanosheets were conducted with high detection sensitivities, demonstrating the feasibility of practical sensing applications. It is therefore believed that our findings in this study could open up the possibility of utilizing MnSe-g-C 3 N 4 nanosheets as enzymatic mimics in diagnostics and biotechnology fields.
研究领域:
材料科学
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纳米技术
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分析化学
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生物传感器
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Ting Li,Yikun Wang,Lingling Yuan,Qianwen Zhou,Shuangyan Qiao,Zhengqing Liu,Shaokun Chong
Conversion mechanism anode materials have been widely employed for potassium ion batteries (PIBs) due to high theoretical specific capacities. However, large volume expansion and poor electrochemical kinetics have become the key bottlenecks hindering its further development. Herein, α-MnSe nanorods wrapped by N-doped carbon and graphene (α-MnSe@NC@graphene) are constructed as anode materials for PIBs . The architecture can not only provide superior electrode integrity to buffer volume variation and maintain structure stability via synergistic effects of physical encapsulation and Mn-C chemical bonding, but also serve as conductive network to accelerate the electron transfer and K-ion diffusion. As a result, α-MnSe@NC@graphene composite delivers high initial charge specific capacity of 307.9 mAh·g −1 and great cycling stability over 250 cycles with the capacity retention of 232.8 mAh·g −1 at 50 mA·g −1 . Besides, superior rate capability (91.1 mAh·g −1 at 2.0 A·g −1 ) and long lifespan over 700 cycles at 1.0 A·g −1 with the low capacities decay rate of 0.064% per cycle can be acquired. Ex situ TEM and XPS results verify that K-ion insert into/extract from α-MnSe@NC@graphene through a conversion mechanism based on the Mn-ion redox site (MnSe + 2 K + + 2e - ↔ Mn + K 2 Se).
研究领域:
材料科学
·
电化学
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纳米能源
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储能技术
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无机功能材料
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先进电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Tao Liu,Lijun Xu,Xuejie Wang,Haoliang Lv,Bicheng Zhu,Jiaguo Yu,Liuyang Zhang
The natural abundance of sodium has fostered the development of sodium-ion batteries for large-scale energy storage. However, the low capacity of the anodes hinders their future application. Herein, carbon-encapsulated MnSe-FeSe nanorods (MnSe-FeSe@C) have been fabricated by the in-situ transformation from polydopamine-coated MnO(OH)-Fe 2 O 3 . The heterostructure constructed by MnSe and FeSe nanocrystals induces the formation of built-in electric fields, accelerating electron transfer and ion diffusion, thereby improving reaction kinetics. In addition, carbon enclosure can buffer the volumetric stress and enhance the electrical conductivity. These aspects cooperatively endow the anode with superior cycling stability and distinguished rate performance. Specifically, the discharge capacity of MnSe-FeSe@C reaches 414.3 mA h g −1 at 0.1 A g −1 and 388.8 mA h g −1 even at a high current density of 5.0 A g −1 . In addition, it still retains a high reversible capacity of 449.2 mA h g −1 after 700 long cycles at 1.0 A g −1 . Further, the ab initio calculation has been employed to authenticate the existence of the built-in electric field by Bader charge, indicating that 0.24 electrons in MnSe were transferred to FeSe. The in-situ XRD has been used to evaluate the phase transition during the charging/discharging process, revealing the sodium ion storage mechanism. The construction of heterostructure material paves a new way to design performance-enhanced anode materials for sodium-ion batteries.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Lirong He,Peng Zhou,Liping Wang,Mingyu Zhang,Qizhong Huang,Zhean Su,Xiaodong Wang,Ping Xu,Weijie Song,Renhao Zou
Improving the performance of anode materials is of great importance for lithium-ion batteries (LIBs). Transition metal selenides compositing carbon and germanium (Ge) have attracted extensive attention. In this work, an anode material that integrates Ge and α-MnSe in carbon nanofibers (CNFs) was first synthesized by heat treatment after electrospinning. The coupling of Ge with α-MnSe and carbon can cause the growth process of α-MnSe to occur inside the CNFs, which can buffer the volume change, refine the grains and avoid particles protruding from the surface of CNFs. In addition, the interconnected conductive network of Ge/α-MnSe@CNFs can provide fast diffusion channels for Li ions and improve the electrical conductivity . Importantly, there is a synergistic effect of Ge, α-MnSe, and CNFs on the anode material for LIBs. As expected, Ge/α-MnSe@CNFs exhibited an excellent performance with a capacity of 1514.7 mAh g −1 after 200 cycles at 0.1 A g −1 and 1030 mAh g −1 after 1000 cycles even at 1 A g −1 . Therefore, this new preparation strategy of Ge/α-MnSe@CNFs offers novel ideas to develop high-performance and long-life LIBs.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Huipei Zhang,Shengfan Fang,Mengyuan Guo,Zheng Fang,Luyao Qi,Liping Guo,Yanmin Qin,Haifeng Bao
Heterostructure MnO/MnSe nanoparticles, encapsulated in a nitrogen-doped carbon shell (MnO/MnSe@NC), were synthesized as anode materials using a hydrothermal approach followed situ calcination and selenization process. The NC shell, possessing high electronic conductivity , can function as a substrate to prevent nanoparticle agglomeration and mitigate volume variations. The porous nanostructures can shorten the ion diffusion path and increase active sites, thereby accelerating ion migration and ultimately enhancing battery capacity. Moreover, the MnO/MnSe heterostructure can facilitate Li + /Na + diffusion, leading to improved rate performance. Benefiting from the structural advantage of MnO/MnSe heterostructure nanoparticles encapsulated within a nitrogen doped carbon shell, this electrode demonstrates exceptional electrochemical performance as an anode for LIBs , including a high discharge capacity (1740 mAh g −1 at 0.1 A g −1 ), remarking rate capability (849.9 mAh g −1 at 15.0 A g −1 ), and superior cycling stability (802 mAh g −1 over 1500 cycles at 5.0 A g −1 ). Meanwhile, the MnO/MnSe@NC serves as an anode material in SIBs, demonstrating a remarkable reversible specific capacity of 902.8 mAh g −1 at 0.1 A g −1 and excellent rate capability (681.6 mAh g −1 at 15.0 A g −1 ). The present study presents a straightforward approach for fabricating the anode electrode of high-performance lithium/sodium ion batteries.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Chen Zhang,Mingjun Chen,Xiaohui Zhao,Wenming Zhang,Zhanyu Li
With its consistent thermal runaway temperature and superior capacity, aluminum ion batteries have emerged as a key area for battery development. At the moment, electrode material is the main focus of aluminum ion battery capacity enhancement. Selenide is anticipated to develop into a high-performance cathode for aluminum ion batteries, since it is a type of high energy density electrode material. However, because selenide is soluble in acid electrolytes, Al-Se batteries have low cycle performance and cannot keep up with the present demand for electronic gadgets. Here, homogeneous-structured precursors were created via a hydrothermal reaction , and MnSe 2 –MnSe heterojunction hollow spheres were created a step further via temperature control of the selenidation reaction. With 103.76 mAh/g of specific capacity remaining after 3000 cycles at 1.0 A/g, this novel heterojunction material exhibits astounding cycle stability. After additional investigation, it was shown that the MnSe 2 –MnSe heterojunction may prevent the dispersion of the active substances, significantly enhancing the cycle performance. The density of states (DOS) of electrode materials demonstrates the superior electronic conductivity of this heterojunction material. Meanwhile, it was computationally demonstrated that the MnSe 2 –MnSe heterojunction has a strong adsorption energy for AlCl 4 − , thus accelerating the reaction kinetics. In summary, the performance of selenides has been improved by this novel heterojunction material, which also makes for a superior cathode material .
研究领域:
电化学
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材料科学
·
能源存储
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纳米材料
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固态化学
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电极材料
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Yaning Wang,Yi Yuan,Ruiming Yang,Meiling Li,Tie Liu,Masahiro Tahashi,Qiang Wang
SnTe, a nontoxic thermoelectric (TE) material, has attracted considerable attention due to its lead-free rock-salt, which is comparable to PbTe. In this study, an alloying strategy is used to embed MnSe in the SnTe matrix, which results in synergistic effects of valence-band convergence and defect engineering. The MnSe-alloyed SnTe achieves an excellent thermoelectric performance. Mn- and Se-substitutions of Sn and Te sites, respectively, induce the convergence of valence bands and increase the Seebeck coefficients of samples, which lead to competitive power factors. In addition, the numerous defects introduced by alloying with MnSe act as phonon scattering sources to effectively lower the lattice thermal conductivity. The SnTe–10%MnSe sample exhibited a lattice thermal conductivity of 0.44 W m–1 K–1 at 823 K. Ultimately, the SnTe–8%MnSe sample achieved a figure of merit of 1.02, which was 276% higher than that of undoped SnTe. This study offers an approach to enhancing Te-based thermoelectric materials with low lattice thermal conductivity and to advancing the fundamental understanding of SnTe.
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 4
·667
·
IF 5.3
Violeta Jevtovic,Afaq Ullah Khan,Zainab M. Almarhoon,Kamran Tahir,Salman Latif,Fahad Abdulaziz,Karma Albalawi,Magdi E. A. Zaki,Violeta Rakic
In this work, a manganese selenide/graphene oxide (MnSe/GO)-based composite was prepared for wet-chemical assisted method against organic dye; herein, methylene blue (MB) dye removal from the water was employed as a metal selenide-based photocatalyst. The synthesized MnSe/GO composite was systematically characterized by X-ray diffraction (XRD), Fourier transform electron microscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and UV-visible diffuse reflectance spectroscopy (UV-vis. DRS). The structural characteristic revealed the adequate synthesis of the sample with good crystallinity and purity of the obtained products. The morphological analysis indicates the formation of MnSe nanoflakes composed of tiny particles on their surface. At the same time, the GO nanosheets with high aggregation were formed, which may be due to the van der Waals forces. The bond interaction and compositional analysis studies confirmed and supported the structural findings with high purity. The optical analysis showed the bandgap energies of MnSe and their composites MnSe (1.7 eV), 7% GO-MnSe (2.42 eV), 14% GO-MnSe (2.6 eV), 21% GO-MnSe (3.02 eV), and 28% GO-MnSe (3.24 eV) respectively, which increase the bandgap energy after GO and MnSe recombination. Among different contents, the optimized 21% GO-MnSe composite displayed enhanced photocatalytic properties. For instance, a short time of 90 min was taken compared with other concentrations due to the narrow bandgap of MnSe and the highly conductive charge carrier’s support, making the process to remove MB from water faster. These results show that the selenide-based photocatalyst can be an attractive candidate for future advanced photocatalysis applications.Keywords:manganese selenide;GO;methylene blue;organic dye;catalytic activity
研究领域:
环境科学
·
材料科学
·
光催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）