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In-Situ Study of Photo-Rechargeable Aqueous Zinc-Ion Batteries with the Bifunctional α-MnO2 Photoelectrodes

advanced Functional materials 2025年

作者： Zheng, Zhaobo Ding, Chenzhi Hasan, Md Saif Wang, Kao Liu, Yue Yang, Wei Cheng, Jingzhao Luo, Zhengtang Cao, Shaowen Ding, Yao School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Hubei Longzhong Laboratory Xiangyang441000 China Department of Chemical and Biological Engineering and William Mong Institute of Nano Science and Technology Hong Kong University of Science and Technology Clear Water Bay Kowloon 999077 Hong Kong

Directly harvesting solar power without traditional solar cells represents an efficient solution to the current energy challenges. Photo-rechargeable batteries (PRBs) are receiving intense interest as they eliminate the additional costs and energy losses associated with off-grid power generation. Herein, photo-rechargeable aqueous Zinc-ion batteries (PRZIBs) are constructed, using α-MnO2 nanowires as bifunctional photoelectrodes to reveal the complex photo-electrochemical effects in MnO2 PRZIBs. Through a series of in situ characterizations under illumination, the advantages of intrinsic light effects in α-MnO2 based PRZIBs are elucidated from three aspects: (1) inhibition of Jahn-Teller distortion via strengthened hydrogen bonding within α-MnO2, (2) suppression of Mn2+ dissolution through the "protective layers" formed by photo-promoted Zn2+/H+ co-intercalation, and (3) acceleration of Zn2+ desolvation in the electrolyte enabled by abundant photogenerated holes. The PRZIBs with α-MnO2 photoelectrodes demonstrate a specific discharge capacity of 308.1 mAh g−1 under illumination (1 sun), along with excellent cycling stability and high energy conversion efficiency of 0.68% (by photocharging only). In addition, the interdigital micro-PRZIBs successfully power wearable sensors, demonstrating practical applicability. This work provides valuable insights into the time-resolved reaction mechanisms in PRZIBs, and opens new prospects for developing PRBs in wearable and portable devices, i.e. smart textiles and biosensors. © 2025 Wiley-VCH GmbH.

关键词： Energy harvesting

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Influence of Nb2O5 on the structure, crystallization, and performance of ZnO-B2O3-SiO2 glass for LTCC applications

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Ceramics International 2025年

作者： Li, Menghong Han, Jiao Zhou, Ju Li, Mingwei Qi, Wenhan Yang, Ping Li, Shiqi Zeng, Yiming Yunnan Precious Metal Laboratory Co. Ltd Kunming650106 China State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals Kunming Institute of Precious Metals Kunming650106 China State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China

ZnO-B2O3-SiO2-Nb2O5 (ZBSN) glass-ceramics were synthesized via glass melt quenching followed by heat treatment at 700–1050 °C. FTIR analysis revealed that the high field strength Nb5+ ions preferentially attracted O2− ions within the glass, competing with B3+, Si4+, and Zn2+ ions to form Nb-O bonds, thereby reinforcing the glass network. In-situ FTIR spectrograms further demonstrated that elevated temperatures promoted nucleation and growth of Si4+ and B3+ ions containing crystalline phases, intensifying the competition for O2− ions among these cations. This process amplified vibrational modes associated with B-O-B and Si-O-Si bonds in the structural units. Increasing the Nb2O5 content enhanced network connectivity, suppressing crystallization and increasing the residual glass phase. Consequently, the sintering temperature decreased progressively, while the coefficient of thermal expansion (CTE) increased. Among the compositions studied, the ZBSN0.5 glass-ceramic sintered at 950 °C for 30 min demonstrated optimal properties: CTE = 3.2 ppm/°C, Εr = 6.2, and Q × f = 19573 GHz. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Sintering

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Effects of Phosphorus Additions on Microwave Sintering Properties of Uitrafine WC-10Co Cemented Carbides

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Journal of Wuhan University of technology(materials Science) 2007年第4期22卷 725-727页

作者：全峰周建 State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology State Key Lab of Advanced Technology for Materials Synthesis and Processing Wohan University of Technology

Using the microwave sintering technology, the effects of phosphorus （P） additions on the microstructure and properties of the ultrafine WC-10Co alloys were investigated. The experimental results show that with only 0.3wt% P additions, full density WC-10Co cermets were obtained at temperature of 1250℃, which is 70 ℃ lower than that of the undoped counterparts. Lower sintering temperature can result in finer WC grain growth; therefore, the P-doped WC-10Co alloys exhibited higher hardness than the undoped ones. But at the same time, P doping could lead to sacrifice of fracture toughness ofWC-10Co cemented carbides.

关键词： microwave sintering cemented carbides ultrafine hardmetals phosphorus grain growth inhibitor

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synthesis and high temperature thermoelectric transport properties of Si-based type-Ⅰ clathrates

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Chinese Physics B 2009年第7期18卷 3084-3089页

作者：邓书康唐新峰唐润生 Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology Yunnan Normal University State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

N-type Si-based type-Ⅰ clathrates with different Ga content were synthesized by combining the solid-state reaction method,melting method and spark plasma sintering （SPS） *** effects of Ga composition on high temperature thermoelectric transport properties were *** results show that at room temperature,the carrier concentration decreases, while the carrier mobility increases slightly with increasing Ga *** Seebeck coefficient increases with increasing Ga content. Among all the samples,Ba7.93Ga17.13Si28.72exhibits higher Seebeck coefficient than the others and reaches -135μV·K^-1 at 1000 *** sample prepared by this method exhibits very high electrical conductivity,and reaches 1.95x 10^5 S·m^-1 for Ba8.01Ga16.61Si28.93 at room *** thermal conductivity of all samples is almost temperature independent in the temperature range of 300-1000 K,indicating the behaviour of a typical *** maximum ZT value of 0.75 is obtained at 1000 K for the compound Ba7.93Ga17.13Si28.72.

关键词： type-Ⅰ clathrate thermoelectric materials synthesis

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Effect of La_2O_3 content on wear resistance of alumina ceramics

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Journal of Rare Earths 2016年第3期34卷 288-294页

作者：吴婷婷周建吴伯麟李文杰 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology College of Materials Science and Engineering Guilin University of Technology

In order to improve the wear resistance, a kind of alumina ceramic with good wear resistance was created in an Al_2O_3-CaC_O3-SiO_2-MgO-La_2O_3（ACSML） system. The effects of La_2O_3 content on sintering temperature, bulk density, and wear rate were investigated. The wear rate of sample was as low as 0.0393‰. The wear resistance of the sample containing La_2O_3 has improved 43% than that of the sample without La_2O_3. Appropriate La_2O_3 doping could inhibit grain growth, enhance density, and purify grain boundary. La_2O_3 could diffuse into Al_2O_3 to form a solid solution and react with Al_2O_3 to form high-aluminum low-lanthanum complex oxides. The combination among Al_2O_3, the solid solution layer, and the layer of high-aluminum low-lanthanum complex oxides combined closely, which could improve grain boundary cohesion. Besides, the homogeneous distributions of elements made uniform structure. Finally, the wear resistance of alumina ceramic was improved.

关键词： alumina ceramic abrasive media lanthanum oxide wear resistance rare earths

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Effect of nanocomposite structure on the thermoelectric properties of 0.7-at% Bi-doped Mg_2 Si nanocomposite

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Chinese Physics B 2011年第10期20卷 355-361页

作者：杨梅君沈强张联盟 Centre for Materials Research and Analysis Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Nanocomposites offer a promising approach to the incorporation of nanostructured constituents into bulk thermo- electric materials. The 0.7-at% Bi-doped Mg2Si nanocomposites are prepared by spark plasma sintering of the mixture of nanoscale and microsized 0.7-at% Bi-doped Mg2Si powders. Microstructure analysis shows that the bulk material is composed of nano- and micrograins. Although the nanograin hinders electrical conduction, the nanocomposite struc- ture is more helpful to reduce thermal conductivity and increase the Seebeck coefficient, hence improving thermoelectric performance. A dimensionless figure of merit of 0.8 is obtained for the 0.7-at% Bi-doped Mg2Si nanocomposite with 50-wt % nanopowder, which is about twice larger than that of the sample without nanopowder.

关键词： intermetallic compounds nanostructures semiconductors thermoelectric effects

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Electrorheological Particles Composed of Polyaniline Core and BaTiO_3 Layer Shell

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Journal of Wuhan University of technology(materials Science) 2002年第1期17卷 30-32页

作者：魏建红 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan

Composite particles consisting of polyaniline( PAn) core and barium tilanate ( BaTiO3) Layer shell were synthesized. The PAn-BaTiO3 composites particles were characterized with TEM and XRD. The dielectric behavior of particles was tested and the electrorhcologicak(ER) behavior of the suspensions of PAn/ BaTiO3 panicles in chlorinated paraffin oil with a 20vol % was investigated under DC electric field. The results show that the ER effect of composite particle is far stronger than that of pure polyaniline and barium titanate which mere synthesized by the stone method. pH and thickness of BuTiO3 have an important. influence on the ER effects.

关键词： polyaniline bariam titanate core-shell ER effects.

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First-principles study on Pr-doped Bilayer Nickelate La3Ni2O7

arXiv

引用

arXiv 2025年

作者： Huo, Zihao Zhang, Peng Shi, Haoliang Yan, Xiaochun Duan, Defang Cui, Tian Key Laboratory of Material Simulation Methods & Software of Ministry of Education State Key Laboratory of Superhard Materials College of Physics Jilin University Changchun130012 China MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic Physics School of Physics Xi’an Jiaotong University Xi’an710049 China Institute of High Pressure Physics School of Physical Science and Technology Ningbo University Ningbo315211 China

Recently, the Pr-doped Ruddlesden-Popper phase of bilayer nickelate La3Ni2O7 has been reported to exhibit a superconducting transition temperature (Tc) of 82.5 K and superconducting volume fraction of about 57 % at high pressure. However, the effect of Pr-doping on La3Ni2O7 remains unclear. Here, we studied the crystal structures and electronic properties of Pr-doped La3Ni2O7 at 0 and 15 GPa based on the first-principles calculations to explore the doping effect of Pr. Our findings indicate that the praseodymium atoms prefer to occupy the outer La-O layers site. We then investigated the evolution of crystal structures in both the ambient pressure phase and high pressure phase of La3Ni2O7 as a function of doping concentration, revealing inconsistent trends in their evolution with increasing doping levels. Finally, by fitting the bilayer two-orbital model, we propose that doping Pr may benefit for superconductivity of La3Ni2O7. These results not only can help the further experimental search of RP phase nickelate at lower pressure, but also provide helpful guide for understanding the effect of chemical pressure in isovalent doped RP phase nickelate superconductor. Copyright © 2025, The Authors. All rights reserved.

关键词： Superconducting transition temperature

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Multiferroic and magnetoelectric properties of La_(0.1)Ba_(0.9)Fe_(12)O_(19) ceramics

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Chinese Science Bulletin 2014年第36期59卷 5212-5217页

作者： Guolong Tan Wenrong Wang Wei Li Limin Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

La0.1Ba0.9Fe12O19 powders with similar hexagonal crystal structure to Ba Fe12O19 have been successfully synthesized using polymer precursor method. The powders were suppressed into pellets, which were sintered into ceramics at 1,300 °C for 1 h. The structure and morphology of the ceramics have been determined by X-ray diffraction(XRD) and field emission scanning electron microscopy(FESEM). Clear electric hysteresis loops upon different amplitude of external fields indicates that La0.1Ba0.9Fe12O19 is a kind of possible ferroelectric compound. The maximum remnant polarization of La0.1Ba0.9Fe12O19 ceramic is estimated to be *9.6 l C/cm2. The Fe O6 octahedron in its perovskite-like hexagonal unit cell as well as the shift of Fe3?off the center of octahedron are proposed to be the origin of electric polarization in La0.1Ba0.9Fe12O19. Simultaneous occurrence of large ferroelectricity and strong ferromagnetism has been observed in La0.1Ba0.9Fe12O19 ceramics. More interestingly, this compound demonstrates electronic polarization behavior being actuated by an applied magnetic field, indicating the existence of magnetoelectric(ME) coupling effect in the La0.1Ba0.9Fe12O19 ceramics. Our results may lead to new device applications such as magnetically recorded ferroelectric memory.

关键词：铁电性陶瓷场发射扫描电子显微镜磁特性晶体结构剩余极化 FESEM X射线衍射

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Combustion synthesis of TiB_2 Ceramics Powder from B_2O_3-TiO_2-Mg System in Air Atmosphere

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Journal of Wuhan University of technology(materials Science) 2005年第2期20卷 90-93页

作者：何金云王为民 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Prof

TiB_2 ceramics powder was synthesized from B_2O_3-TiO_2-Mg system. The effects of TiB_2 addition as diluent on the combustion synthesis process were investigated. The results of thermodynamic calculation and experiments show that the increase of TiB_2 content ranging from 0 to 20wt% can reduce the adiabatic temperature T_(ad) from 3100 K to 2896 K and combustion temperature T_c from 2139 K to 1621 K respectively. The particle size and half width of the particle distribution are also increased with the addition of TiB_2 increasing from 0 to 20wt%. The combustion product is a mixture of TiB_2, MgO, and other intermediate phases. The leached product contains mainly TiB_2, TiO_2 and TiN, and its oxygen content is 7.77wt%.

关键词： combustion synthesis B_2O_3-TiO_2-Mg TiB_2

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