Journal of Energy Storage
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2023
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IF 9.4
Xiaolin Sun,Kai Zhao,Hucheng Fu,Hanwen Guo,Jun Shen,Fuhao Jin,Lei Wang,Zihao Wang,Liang Cui,Fengyu Quan,Jingquan Liu
For high-performance electrochemical energy storage and conversion applications, controllable nanoarchitecture arrays of the transition metal selenide on conductive substrates are attractive electrode materials. In this work, a heterostructure comprising of MnSe 2 nanorods over NiCo 2 Se 4 nanosheets with a large specific surface area is rationally generated on nickel foam (NF) substrate (MnSe 2 @NiCo 2 Se 4 ) using a hydrothermal process. The formation mechanism of the MnSe 2 @NiCo 2 Se 4 heterostructure was also examined by adjusting the selenium feeding during the selenization process. The MnSe 2 @NiCo 2 Se 4 -2 electrode exhibits remarkable capacitance (1078C g −1 at 1 A g −1 ), and superior cycle stability (90.7 % after 8000 cycles) as a result of the cooperative effect of MnSe 2 and NiCo 2 Se 4 . Furthermore, an asymmetric supercapacitor (ASC) was developed employing the improved MnSe 2 @NiCo 2 Se 4 -2 and activated carbon materials (AC) as the positive electrode and negative electrode (MnSe 2 @NiCo 2 Se 4 -2//AC), respectively, which has a high energy density of 63.2 Wh kg −1 at a power density of 396 W kg −1 . The impressive performance indicates that the MnSe 2 @NiCo 2 Se 4 electrode has a bright potential in supercapacitors .
研究领域:
材料科学
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电化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2022
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IF 5.532
Jiwei Xie,Guijing Liu,Xiaolei Jiang,Zhuyin Sui,Shanmin Gao
One-step room temperature liquid-phase co-precipitation technology is applied in the field of energy storage, which has the advantages of mass production and simple operation. Using this technique, we have directly synthesized MnO 2 and amorphous MnSe 2 . By compounding with carbon nanotubes, the prepared electrodes achieved high discharge capacity (451.1 mAh·g −1 at 0.1 A g −1 ) and remarkable cycling stability (87.24% after 2000 cycles). The Zn//MnSe 2 /CNTs battery shows excellent power density (3762 W kg −1 ) and energy density (301 Wh·Kg −1 ). This work is expected to achieve mass production of electrode materials, which provides great potential for the application of Selenium in zinc-ion batteries.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
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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
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分析化学
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生物医学工程
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DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 20
·1621
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IF 4.4
Junjun Wang,Linlin Tai,Wei Zhou,Han Chen,Jingxiong Liu,Shaohua Jiang
Transition metal sulfide compounds with high theoretical specific capacity and excellent electronic conductivity that can be used as cathode materials for secondary batteries attract great research interest in the field of electrochemical energy storage. Among these materials, MnSe2garners significant interest from researchers due to its unique three-dimensional cubic structure and inherent stability. However, according to the relevant literature, the performance and cycle life of MnSe2are not yet satisfactory. To address this issue, we synthesize MnSe2/CNTs composites via a straightforward hydrothermal method. MnSO4·H2O, Se, and N2H4·H2O are used as reactants, and CNTs are incorporated during the stirring process. The experimental outcomes indicate that the fabricated electrode demonstrates an initial discharge specific capacity that reaches 621 mAh g−1at a current density of 0.1 A g−1. Moreover, it exhibits excellent rate capability, delivering a discharge specific capacity of 476 mAh g−1at 10 A g−1. The electrode is able to maintain a high discharge specific capacity of 545 mAh g−1after cycling for 1000 times at a current density of 2 A g−1. The exceptional electrochemical performance of the MnSe2/CNTs composites can be ascribed to their three-dimensional cubic architecture and the 3D CNT network. This research aids in the progression of aqueous Cu-ion cathode materials with significant potential, offering a viable route for their advancement.
研究领域:
材料科学
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电化学能源存储
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DOI
PubMed
高影响因子
Advanced Healthcare Materials
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2022
·Vol. 11
·期 14
·2200041
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IF 11.092
Yuanlin Wang,Xiang Sun,Yaqian Han,Kai Wang,Lixin Cheng,Ye Sun,Flemming Besenbacher,Miao Yu
As a typical tumor microenvironment-responsive therapy, chemodynamic therapy (CDT), producing hydroxyl radicals ( • OH) to eliminate tumor cells, has demonstrated great promise. Nevertheless, there are still major challenges: • OH generated from endogenous H 2 O 2 is usually insufficient; the CDT effect is strongly dependent on the pre-reaction with glutathione. Addressing the challenges, Au@MnSe 2 core–shell nanoagent for synergetic chemodynamic-photothermo-photocatalytic therapy combined with tetramodal imaging, including magnetic resonance imaging, computed tomography, photoacoustic, and infrared thermal imaging is reported. Distinct from the reported glutathione-depleting agents, Mn 2+ in MnSe 2 allows immediate generation of • OH, independent of pre-reaction. Meanwhile, Mn 3+ consumes glutathione by its conversion to Mn 2+ . The Au-MnSe 2 combination promotes photothermal conversion and photocatalytic reaction, resulting in largely enhanced • OH generation from endogenous H 2 O 2 and significant hyperthermia. Meanwhile, immune response is effectively activated: the intratumoral expression of programmed cell death-1 and proinflammatory cytokines increase to 4–7 folds; the cytotoxic and helper T lymphocytes cells in the tumor area increase to more than 2.5-folds; an evident, temporary systemic immunostimulatory effect is demonstrated. High tumor inhibition rate (≈97.3%) and greatly prolonged survival are obtained. This highly-integrated design coordinating three different therapies with four different imaging modals provide new possibilities for high-performance theranostic nanoagents.
研究领域:
癌症治疗
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材料科学
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纳米技术
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免疫学
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生物医学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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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
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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
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DOI
高影响因子
NANO
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2026
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IF 1.3
Zheng Zhang,Bin He,Yunfei Wu,Shaohua Jiang,Yuanyuan Zeng
To address the urgent demand for advanced electrode materials in high-performance aqueous copper-ion batteries (ACIBs), manganese selenide (MnSe 2 ) was successfully synthesized as a cathode material via a facile hydrothermal method. Systematic investigations were conducted to evaluate the effects of hydrothermal reaction temperature and duration on the surface morphology and microstructure of MnSe2, while a comprehensive analysis of the Cu 2+ storage mechanism was also performed. The results demonstrated that MnSe 2 exhibited outstanding electrochemical performance under the optimal hydrothermal conditions of 180°C and 12 h of reaction time. During the Cu 2+ storage process of MnSe 2 , the reversible intercalation behavior of Cu 2+ underwent adaptive adjustment with the transformation of the lattice structure. This unique feature enabled the electrode to maintain a high discharge specific capacity of 572 mAh g -1 after 500 cycles at a current density of 2 A g -1 . Overall, this work provided a practical and highly promising strategy for the design and development of high-performance materials for ACIBs, offering significant implications for advancing the application of ACIBs in next-generation energy storage systems.
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DOI
高影响因子
Sustainable Materials and Technologies
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2023
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IF 9.6
Han Chen,Tiange Gao,Mingxia Wu,Xuefei Wei,Anbao Yuan,Jiaqiang Xu
Transition metal oxides or selenides have been widely used in electrode materials for supercapacitors. And the formation of heterostructures between the two different materials can further realize high-performance electrode materials and high-energy density supercapacitor. Therefore, in our work, the novel reaction method of incomplete selenization makes the electrode material have both oxides and selenides, and the prepared heterostructured composite material has excellent electrochemical performance. Herein, the nickel foam (NF)-supported flower-shaped manganese‑cobalt-oxide-selenide composite heterostructures self-assembled from the heterogeneous nanorods consisting of MnCo 2 O 4.5 , CoSe, and MnSe 2 components were designed and fabricated via a facile, adjustable, incomplete selenization of the hydrothermal derived manganese‑cobalt hydroxide (Mn-Co-OH) precursor (named as Mn-Co-O-Se-x, where x represents the feed mass ratio between selenium powder and precursor, which is 5, 10, and 20, respectively). The optimized Mn-Co-O-Se-5 composite exhibits a high specific capacitance of 3424 F g −1 at a current density of 1 A g −1 . After 10,000 cycles at 20 A g −1 , the discharge capacitance is 103.7% of the first value, demonstrating superior cycle stability. Moreover, the assembled Mn-Co-O-Se-5//activated carbon (AC) asymmetric supercapacitor (ASC) device delivers maximum energy density and power density at 112 Wh kg −1 and 16,000 W kg −1 and shows good cycling stability with a capacitance retention of 98.7% after 10,000 cycles at 10 A g −1 , demonstrating promising prospects for application in supercapacitors.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）