Journal of Energy Storage
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2020
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IF 3.762
Meng Gao,Xia Dong,Kedian Wang,Wenqiang Duan,Xiaomao Sun,Chenguang Zhu,Wenjun Wang
Graphene/metal oxide nanocomposites are one of the most ideal electrode materials for microsupercapacitors (MSCs). However, the efficient and simple synthesis of graphene/metal oxide nanocomposites and fabrication of microelectrodes for MSCs are a challenge. In this work, using graphene oxide/Mn(CH 3 COO) 2 as the precursor, an efficient and simple approach is proposed to simultaneously synthesize graphene/MnO nanocomposites and process interdigital electrodes for MSCs by one-step picosecond laser direct-writing. Here, the MnO nanoparticles that are evenly distributed on the surface of graphene can provide pseudocapacitance to enhance the specific capacitance of graphene/MnO nanocomposites. Specifically, graphene/MnO electrode exhibits a high specific capacitance of 470 mF cm −2 . Furthermore, based on graphene/MnO interdigital electrodes, the symmetric MSCs shows excellent electrochemical performance. The maximum area specific capacitance of MSCs with PVA/H 3 PO 4 gel electrolyte is 55 mF cm −2 . After 5000 cycles, the capacitance of the MSCs with PVA/H 3 PO 4 gel electrolyte retains about 96% of its initial capacitance. The maximum energy density of MSCs with PVA/H 3 PO 4 gel electrolyte is 4.89 μWh cm −2 , and its maximum power density is 0.72 mW cm −2 . Moreover, this approach also provides a way to synthesize other graphene/metal oxide nanocomposites for MSCs by one-step laser direct-writing.
研究领域:
材料科学
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纳米技术
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能源存储
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
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IF 5.302
Feng Luo,Zhimin Li,Jiyuan Chen,Yangxi Yan,Dongyan Zhang,Maolin Zhang,Yue Hao
BiFeO 3 –BaTiO 3 –based solid solutions are promising candidates for high–temperature piezoelectric devices because of their high Curie temperature ( T C ) and considerable electrical properties. Here, we reported an optimum composition of 0.7Bi(Fe 0.999 Mn 0.001 )O 3 –0.3BaTiO 3 ceramic with a large piezoelectric constant ( d 33 ) of 230 pC/N and a high T C of 505 °C, which was attributed to the intentional introducing of the ceramic with MnO and MnO 2 mixture. Furthermore, an in situ d 33 measurement was carried out, demonstrating excellent thermal stability for the 0.7Bi(Fe 0.999 Mn 0.001 )O 3 –0.3BaTiO 3 specimen. The d 33 remained above 200 pC/N in the temperature range of 25 °C–400 °C and its fluctuation was less than ± 15 %. It was determined that the high d 33 in the 0.7BiFe 0.999 Mn 0.001 )O 3 –0.3BaTiO 3 ceramic originated from a synergistic effect of rhombohedral distortion, intrinsic response, and ferroelectric order. The findings establish a solid correlation between electrical properties and phase/domain structure, and provide a novel approach to improve the piezoelectric properties for BiFeO 3 –BaTiO 3 –based ceramics.
研究领域:
材料科学
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物理学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Zixuan Wang,Zirui Jia,Junwen Ren,Li Wang,Di Lan,Siyuan Zhang,Xuetao Shi,Xuehua Liu,Zhenguo Gao,Guanglei Wu
The study of delicate nano-topological structures has been a prominent area of research, largely due to the distinctive electromagnetic characteristics of this structure. However, the relationship between topological transformations, material properties, and electromagnetic wave (EMW) absorption performance remains insufficiently understood. In this study, a series of carbon fiber-based Co/MnO nanocomposites is derived from Co/Mn bimetal Prussian blue analogs encapsulated in polymer nanofiber networks by electrospinning. It has been demonstrated that various topological shapes can be modulated by modulating surfactants, thereby changing the degree of graphitization and electrical conductivity. The optimized spherical precursor composite carbon fiber exhibits superior EMW absorption capability with minimum reflection loss (RL min ) of −58.15 dB with a thickness of 2.3 mm. Moreover, ultrabroad effective absorption bandwidth (EAB) as large as 8.96 GHz is obtained. This work offers a significant contribution to the field of topology, while also promoting the development of manganese-based microwave-absorbing materials (MAMs) with enhanced electromagnetic absorption properties.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Zhuoyang Li,Yang Zhang,Guishang Pei,Mengjiao Jiao,Xuewei Lv
MnV 2 O 6 and Mn 2 V 2 O 7 are essential compounds in the manganese salt roasting process for extracting vanadium and serve as excellent battery materials. Determining their thermodynamic properties is of significant theoretical and practical importance. In this study, MnV 2 O 6 and Mn 2 V 2 O 7 were synthesized through solid-state synthesis under a nitrogen atmosphere, and their crystal structures were analyzed using X-ray powder diffraction. The heat capacity of MnV 2 O 6 and Mn 2 V 2 O 7 were measured using relaxation calorimetry over the temperature range of 2–300 K. The entropy at 298.15 K, including magnetic contributions, was calculated as 178.99 ± 5.35 J K -1 ·mol -1 for MnV 2 O 6 and Mn 2 V 2 O 7 for 258.93 ± 6.47 J K -1 ·mol -1 . The standard molar enthalpies of formation were determined using high-temperature solution calorimetry in a molten lead borate solvent, yielding -1997.09 ± 23.97 for MnV 2 O 6 and -2427.71 ± 29.12 kJ mol -1 for Mn 2 V 2 O 7 from their element references. Based on these reliable experimental data, other thermodynamic properties, including enthalpy changes, entropy, and Gibbs free energy, were calculated. Finally, thermodynamic simulations were conducted to analyze phase evolution during the manganese salt roasting process and to evaluate the water solubility of MnV 2 O 6 and Mn 2 V 2 O 7 .
研究领域:
材料科学
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热力学
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化学工程
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产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2019
·Vol. 30
·期 33
·335401
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IF 3.399
Peiyuan Ji,Jing Wan,Yi Xi,Yuzhu Guan,Chengshuang Zhang,Xiao Gu,Jien Li,Junlin Lu,Dazhi Zhang
One-dimensional tunnel and layer frame crystal structure materials are extremely attractive for energy storage in electrode materials. The energy storage properties of the electrode materials depend on their conductivity. Furthermore, the conductivity of electrode materials can be tailored through combination or doping with other materials, which transforms their properties from semiconductor to semimetallic or metallic and allow them to show unequaled performance for storage devices. In this work, heterostructures of manganese oxide (MnO) and modified sodium titanate (Na2Ti6O13) (MnO@Na2Ti6O13) nanowires are attained by the in situ thermal decomposition method. The heterojunction between MnO and Na2Ti6O13 allows the semiconductor properties of pure Na2Ti6O13 to show remarkable metallic behavior for improving the electrochemical performance. The capacitance of MnO@Na2Ti6O13 heterojunction nanowires can reach 272.3 F g−1, a power intensity of 250 W kg−1 at the energy density of 37.83 Wh kg−1 and retain 5000 W kg−1 at 6.67 Wh kg−1 as well. The energy storage mechanism of the MnO@Na2Ti6O13 heterostructure is studied by density functional theory. All of the results show that the MnO@Na2Ti6O13 heterostructure material has the potential to be an excellent supercapacitor material in the future.
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
Materials Science & Engineering C-Materials for Biological Applications
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2020
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IF 5.88
Yuanyuan Li,Li Tang,Dongmei Deng,Haibo He,Xiaoxia Yan,Jinhua Wang,Liqiang Luo
The construction of metal-oxide heterojunction architecture has greatly widened applications in the fields of optoelectronics, energy conversions and electrochemical sensors. In this study, olive-like hetero-structured MnO-Mn 3 O 4 microparticles wrapped by reduced graphene oxide (MnO-Mn 3 O 4 @rGO) were synthesized through a facile solvothermal-calcination treatment. The morphology and structure of MnO-Mn 3 O 4 @rGO were characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, and X-ray diffraction. The as-synthesized MnO-Mn 3 O 4 @rGO exhibited prominent catalyzing effect on the electroreduction of H 2 O 2 , due to the combination of good electrical conductivity of rGO and the synergistic effect of MnO and Mn 3 O 4 . The MnO-Mn 3 O 4 @rGO modified glassy carbon electrode provided a wide linear response from 0.004 to 17 mM, a low detection limit of 0.1 μM, and high sensitivity of 274.15 μA mM −1 cm −2 . The proposed sensor displayed noticeable selectivity and long-term stability. In addition, the biosensor has been successfully applied for detecting H 2 O 2 in tomato sauce with good recovery, revealing its promising potential applications for practical electrochemical sensors.
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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产品关联
DOI
PubMed
高影响因子
CATALYSIS TODAY
·
2019
·
IF 4.888
Yi Yu,Jian Ji,Kai Li,Haibao Huang,Rajendra P. Shrestha,Nguyen Thi Kim Oanh,Ekbordin Winijkul,Jiguang Deng
MnO nanoparticles supported on coal-based activated carbon (AC) were facilely fabricated via incipient wetness impregnation method by calcination of manganese acetate in nitrogen. The as-prepared catalysts were characterized by N 2 adsorption-desorption, XRD, TEM, and XPS. It is demonstrated that calcination under inert atmosphere can facilely obtain well dispersed MnO nanoparticles on AC, and the particle size, as well as the surface oxygen species of the catalysts strongly depended on the calcination temperature. The AC supported MnO nanoparticles all exhibited high catalytic activity toward ozone decomposition at room temperature, and an optimal one was displayed as the calcination temperature of 700 °C. The smallest particle size of MnO nanoparticles and the most amount of surface oxygen vacancies, were mainly responsible for the highest activity of MnO/AC-700. Moreover, lower loading of Mn was found to be more favorable for stable catalytic performance. This work reported a series of MnO based catalysts for efficient removal of ozone at room temperature for the first time, and may shed new lights on the design of manganese oxides with lower oxidation state for efficient ozone decomposition.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Environmental Science-Water Research & Technology
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2025
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IF 3.1
Zhongsen Yan,Zihan Tang,Yongyuan Wang,Yuling Jiang,Juxiang Jin,Haiqing Chang,Yujia Peng,Fangshu Qu
Landfill leachate contains high concentrations of hazardous pollutants that require effective treatment before discharge. Membrane distillation (MD) has emerged as a promising approach for leachate treatment, but membrane fouling remains a major challenge for its practical application. This study introduces an innovative in-situ catalytic MD membrane to improve antifouling performance. The MnO₂-doped polyvinylidene fluoride (M-PVDF) membrane was prepared via electrospinning, incorporating an optimized amount of MnO₂ and fluoroalkyl modifier. The M-PVDF membrane demonstrated excellent retention of landfill leachate pollutants across all test cycles, achieving retention rates above 99.23% for non-ammonia foulants. No membrane wetting was observed in M-PVDF during the cyclic tests, whereas conventional PVDF membranes exhibited wetting in the third cycle. The fouled M-PVDF membrane was effectively restored after cleaning with H₂O₂, regaining its original flux and demonstrating robust self-cleaning capabilities. This performance is attributed to the synergistic effects of micro-nano bubbles and MnO₂-catalyzed H₂O₂ free radicals. The proposed in-situ catalytic self-cleaning strategy significantly enhances the antifouling properties of MD, providing a sustainable solution for high-salinity wastewater treatment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Science China-Chemistry
·
2024
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IF 10.4
Liu Zheng,Qiu Zhipeng,Li Zhiyuan,Wei Tong,Fan Zhuangjun,Pang Huan
Due to the low cost, high theoretical capacity, and environmental friendliness, manganese-based cathodes are regarded as promising alternatives for aqueous zinc ion batteries (AZIBs). However, the practicality of the zinc-manganese system is faced with great challenges, such as the inevitable structural collapse of the cathode and controversial energy storage mechanisms. Herein, we propose a novel concept of spatial deposition mechanism through the addition of MnSO 4 additives in the MnO-pillared graphene blocks (G-MnO). The covalent interface between MnO nanoparticles and multilayered graphene nanosheets can construct an in-built micro-electric field, which is beneficial for consecutive electron transfer (in both horizontal and vertical directions). On this basis, the surficial activity of MnO confined in the interlayered nano-space is greatly enhanced and provides enough spatial deposition and subsequent reaction site for MnSO 4 additives, thus firstly extending the surficial controlled process to stereoscopic space, effectively improving the electrochemical performance of AZIBs. Therefore, the assembled Zn//G-MnO battery exhibits an excellent rate capability of 281.5 mAh g −1 at 0.1 A g −1 and 106 mAh g −1 at 20 A g −1 , and impressive cycling stability (93 mAh g −1 remaining after 5,000 cycles). This finding may provide a new opportunity for the rational design of surficial controlled energy storage and conversion devices.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
IONICS
·
2024
·Vol. 30
·期 8
·4479-4486
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IF 2.4
Tang Anping,Chen Juedong,Xu Guorong,Song Haishen,Wang Jinglun,Chen Hezhang
Non-intercalation cathode materials based on nanocomposites of lithium fluoride and Li-free transition metal compounds have drawn attention as materials for fabricating the cathode of lithium ion batteries owing to their high theoretical specific capacities and high redox voltages. In the present study, a nanocomposite of MnO-LiF was in situ synthesized by a quick annealing at 500 °C for just 5 min using a mixture of ammonium fluoride, manganese acetate, and lithium acetate as precursor. The synthesized composite is investigated by X-ray diffraction, scanning electron microscopy, nitrogen sorption, and charge-discharge measurements. As a lithium-ion battery cathode, it delivers respectively an initial discharge-specific capacity of 170 mAh g −1 and a discharge-specific capacity of 137 mAh g −1 in the 50th cycle at a current rate of C/20, which is equivalent to a moderate capacity retention rate of 80.6%. The novel synthesis approach proposed offers access to electrochemically active composites of lithium fluoride and Li-free transition metal oxides.
研究领域:
材料科学
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电化学
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纳米复合材料
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能源存储
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锂离子电池
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Tiankun Hui,Yajing Yang,Fei Diao,Haihan Fan,Jie Chen,Yan Li,Yingjie Song,Chenchen Fu,Meijie Jia,Wenwei Han,Tengbo Yu,Jianye Fu
A nerve guidance conduit (NGC) based on MXene-MnO₂ hydrogel is developed for the regeneration of peripheral nerves. • The NGC possesses the dual advantages for promoting Schwann cell proliferation and alleviating chronic inflammation. • The NGC can actively regulate the neural regeneration microenvironment and promote angiogenesis. • The NGC can promote neurofilament formation, remyelination and prevent muscle atrophy. Peripheral nerve regeneration remains a major challenge in clinical due to persistent inflammatory microenvironments and oxidative stress that impede functional recovery. In this study, we designed a bio-responsive nerve guidance conduit (NGC) based on a MXene-MnO₂ nanocomposite hydrogel that actively orchestrates the regenerative microenvironment through material-mediated biological crosstalk. Unlike conventional passive conduits, our system leverages the unique properties of two-dimensional MXene to enhance Schwann cell proliferation, while MnO₂ nanoparticles act as catalytic anti-oxidative modules that continuously neutralize ROS and resolve chronic inflammation. This dynamic intervention promotes a timely immune transition to shift macrophages from M1 to M2 phenotype, which facilitates angiogenesis within the injury site. In vivo tests further revealed that the treatment group not only exhibited increased neurofilament number and reduced muscle atrophy but also showed significantly enhanced remyelination. The modular design and catalytic microenvironment-regulation strategy represent a new direction in neural interface engineering. This work provides a scalable and effective platform for advanced neural repair applications and material-guided immunomodulation in regenerative medicine. Illustration of nerve regeneration promoted by MXene-MnO₂ nanocomposite hydrogel NGCs via scavenging ROS and facilitating macrophage polarization towards the M2 phenotype. Download: Download high-res image (265KB) Download: Download full-size image
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产品关联
DOI
高影响因子
Materials Advances
·
2026
·
IF 5.8
Muhammad Shoaib Bilal,Muhammad Arslan,Saqib Javaid,Amina Zafar,Atia Khalid,Shafqat Karim,Naeem Ahmad,Athar Javed,Abdul Ghaffar,Amjad Nisar,Mashkoor Ahmad
Materials engineering plays a pivotal role in determining the energy storage efficiency of supercapacitors. In this work, a Zn-MnO₂/MoS₂ heterostructure was synthesized via a hydrothermal route, where the synergistic coupling of Zn-doped MnO₂ with conductive MoS₂ nanosheets significantly enhanced redox activity, electronic conductivity, surface area, and structural stability. Zn doping not only expanded the MnO₂ lattice to facilitate faster ion diffusion but also induced oxygen vacancies, providing additional active sites for charge storage. Meanwhile, MoS₂ offered a conductive 2D framework that buffered volume changes and accelerated electron transport. As a result, the Zn-MnO₂/MoS₂ electrode delivered a high capacitance of 1440 F g⁻¹ at 2.85 A g⁻¹, outperforming individual Zn-MnO₂ (1250 F g⁻¹) and MoS₂ (210 F g⁻¹) as well as previously reported electrodes in 1 M KOH. Furthermore, the assembled Zn-MnO₂/MoS₂//AC device exhibited a specific capacitance of 147 F g⁻¹ at 2.85 A g⁻¹, an excellent energy density of 59 Wh kg⁻¹ at a power density of 1145 W kg⁻¹, and outstanding cycling stability with ~91% retention over 14,000 cycles. These experimental and theoretical insights highlight the strong potential of Zn-MnO₂/MoS₂ heterostructures for next-generation practical supercapacitor applications.
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DOI
高影响因子
危险品化学品经营许可证（带存储）