JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Xiyue Zhang,Minjie Hou,Jianyong Zhang,Yingjie Zhou,Fupeng Li,Kun Ren,Xuantian Feng,Pengyu Dou,Sicheng Bi,Katsuro Hayashi,Lin Xu,Feng Liang
Alluaudite-type Na 2+2δ Fe 2- δ (SO 4 ) 3 , characterized by its cost-effectiveness and high operating voltage, has emerged as a prospective cathode material for sodium-ion batteries (SIBs). However, poor electronic conductivity and sluggish reaction kinetics hinder its practical application. In this study, we developed a low-strain spherical Na 2.5 Fe 1.75 (SO 4 ) 3 @C@KB (NFS@C@KB) cathode, enclosed within highly conductive Ketjen Black (KB) using a scalable spray-drying method. In-situ X-ray diffraction analysis revealed that the nearly zero-volume strain originates from the synergistic effect of the dense spherical configuration and pearl-like KB branched chains, effectively enhancing the structural stability and prolonging the cycle life. Moreover, the interconnected KB network establishes a continuous electron transport pathway, thereby improving the electronic conductivity. The optimized NFS@C@KB cathode delivered a capacity of 75 mAh g −1 at 5C and exhibited remarkable cycling stability over 4000 cycles. Even under the extreme condition of −20 °C, it retained a discharge capacity of 63 mAh g −1 at a rate of 1C. Consequently, the combination of a low-strain structure and outstanding electrochemical performance is expected to stimulate further exploration of iron-based sulfate cathodes and promote the development of rechargeable SIBs for energy storage applications.
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International Journal of Electrochemical Science
·
2024
·
IF 1.3
Dandan Liang,Weili Hou,Ying Zhang,Jihua Shang,Haibo Ren,Yufeng Sun
Due to the prevailing energy shortages, the pursuit of new alternative energy sources is becoming increasingly urgent. Hydrogen production through water electrolysis has emerged as a crucial method. However, the sluggish four-electron reaction in the oxygen evolution reaction (OER) remains the primary rate-limiting step. In this study, we synthesized a heterostructure La(OH) 3 @CuO-P material on the nickel foam (NF) substrate. The experimental results demonstrate that after phosphating treatment, the heterostructure La(OH) 3 @CuO-P exhibits exceptional catalytic performance with only 215 mV overpotential, a Tafel slope value of 79.36 mV/dec, and a bilayer capacitance of 39.02 mF/cm 2 at a current density of 10 mA/cm 2 for OER in a 1 M KOH solution. These values are significantly superior compared to those obtained using heterostructure La(OH) 3 @CuO alone which showed an overpotential value of 365 mV at a current density of 10 mA/cm 2 . Moreover, during cyclic voltammetry testing for up to 500 cycles, La(OH) 3 @CuO-P also demonstrates relatively stable performance. Analyses suggest that composite heterostructure effectively addresses issues such as insufficient conductivity of La(OH) 3 and monomer aggregation tendency for CuO while maintaining excellent properties for each component. By incorporating P atoms as dopants, the interaction between La, Cu, and P atoms not only facilitates fine-tuning of the electronic structure and optimization of the adsorption free energy (-OH), but also promotes an increase in catalytic active sites through sample size reduction, thereby further augmenting the performance of the OER.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Peng Zu,Haoning Li,Guangming Yan,Gang Zhang
In this study, Ti 3 C 2 T x layers with an average lateral size of approximately 8.3 μm were prepared. The LLM composite membranes synthesized from these layers not only possessed long and narrow mass transfer channels but also further prevented the generation of internal non-selective defects. Additionally, a strategy of compositing these Ti 3 C 2 T x layers and Al(OH) 3 was adopted. The strategy contributed to expanding the interlayer distances of the composite membranes and adjusting the in-plane stacking order, thereby facilitating the construction of mass transfer channels characterized by high permeance within the membranes. This resulted in the preparation of LLMA membranes. Among these LLMA membranes, the LLMA-1:7 composite membranes displayed outstanding performance in the sieving process. Their permeances were more than 10 times higher than those of the LLM membranes (with a thickness of 1 μm). Also, the rejection ratio for CV dye could even exceed 99 %, and the operational stability was also significantly improved. These advantages enabled them to avoid some of the shortcomings commonly found in two-dimensional (2D) separation membranes to a certain extent. In summary, the LLMA-1:7 composite membranes designed in this study demonstrated superior overall performance, compared to the majority of the previously reported 2D membranes. This research is expected to establish a solid foundation for the application of 2D MXene membranes in the field of water treatment.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xianchang Ning,Yuting Wu,Yusheng Xu,Zhenbeina Deng,Tianyu Guo,Minghui Su,Dacheng Zhou,Qi Wang,Jianbei Qiu
Multimodal temperature sensing minimizes environmental interference through cross-validation by integrating both upconversion (UC) and downconversion (DC) modalities and exploiting differences in the thermal responses of emissive transitions in a single activator center. Er 3+ -doped Gd 2 (WO 4 ) 3 phosphors were synthesized via a high-temperature solid-state reaction. This material nables multimodal self-calibrating temperature sensing based on both DC and UC luminescence and exhibits excellent resistance to thermal quenching. Notably, under 360 nm excitation (DC mode), the 530 nm emission maintained 96% of its intensity from 313 to 493 K, and under 980 nm excitation (UC mode) it remained within ±5% from 313 to 573 K. Additionally, the 824 nm emission (under 980 nm excitation) exhibited a 3.37-fold enhancement from 313 to 573 K, attributed to thermally activated cross-relaxation (CR). We also explored a multimodal self-calibrating temperature sensing system using fluorescence intensity ratio (FIR) techniques, employing the I 530 /I 551 ratio in the DC mode and the I 824 /I 551 ratio in the UC mode. Notably, the I 824 /I 551 ratio achieved a maximum relative sensitivity (S r ) of 2.21% K -1 at 313 K. A dual-mode temperature fusion platform was developed by integrating DC and UC channels. In this scheme, the multimodal FIR strategy synergistically minimizes systematic errors through cross-validation while enhancing reliability by combining thermal-quenching resistance and thermally activated emission. This work establishes a novel dual-mode material system framework for high-accuracy optical thermometry.
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ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Mengyao Liu,Meng Cai,Peng Gao,Xuanchen Xu,Zongwei Chen,Yajie Chen,Weiwei Chen,Yanlin Song,Junjie Ma,Chongxin Shan
Bifacial perovskite solar cells present a promising strategy to enhance power output by capturing light from both sides. A micrometer-thick perovskite film is highly desired for extending the light absorption path under bifacial illumination conditions, thereby improving overall efficiency. However, this route intensifies the notorious “thick-thin dilemma,” a challenge posed by the reciprocal constraints between photon coupling and carrier dynamics. While thicker films excel at photon absorption, thinner films are more suitable for long-range electron transport. Here, these limitations s are addressed by engineering a novel “linear-graded-junction” to enhance carrier drift within the perovskite depletion region, avoiding the introduction of additional interface imperfections. A self-doping effect is initiated through Fick-diffusion engineering, which generates a strong built-in electric field and establishes a cascade-like energy band profile. This results in a remarkable 116% enhancement in carrier mobility and a 195% increase in diffusion length. Consequently, the resulting bifacial PSCs yield a power generation density of 26.03 mW cm −2 in all-inorganic perovskite on a scale of 3 µm without adding any organic additives, setting a new benchmark in thick-film PSCs. This approach holds promise for overcoming the long-standing thick-thin trade-off, significantly advancing the industrial viability of high-performance PSCs.
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TALANTA
·
2025
·
IF 6.1
Tingting Wang,Xinhua Zhao,Zhenxu Li,Yi Zhang,Zhu Zhang,Dachi Yang
The newly-emerged gas sensing detection of 1-octen-3-ol biomarker is expected to indirectly monitor foodborne illnesses caused by Salmonella-contaminated meat, which requires high selectivity and a ppb-concentration detection limit. Here, surface-doped ruthenium over tungsten oxide nanocubes (Ru/WO 3 NCBs) have been synthesized by a wet-chemical approach for highly selective and ppb-concentration 1-octen-3-ol sensing. As-prepared Ru/WO 3 NCBs exhibit a polycrystalline structure and consist of NCBs that have an average side length of ∼131 nm, and the Ru/WO 3 NCBs show a high sensing response toward 5 ppm 1-octen-3-ol (R a /R g = 406), excellent selectivity, 50 ppb detection limit, 70% relative humidity tolerance, and 54 days stability at 220 o C. The excellent sensing performance might be attributed to the electronic and chemical sensitization of Ru, which thickens the electron depletion layer and increases adsorbed oxygen to promote interfacial electron transfer and 1-octen-3-ol oxidation. Practically, Ru/WO 3 NCBs have been integrated into a sensing device to simulate detecting 1-octen-3-ol, which has the potential for Salmonella detection in the future.
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SYNLETT
·
2018
·Vol. 29
·期 09
·1244-1248
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IF 2.369
Xiangwen Kong,Lihua Liu,Siqin Luo,Shilu Fan,Haisheng Qian,Hua Xiao
A triphenylphosphine-promoted [3+2] cycloaddition of α,γ-bis-substituted allenoates and N-tosylaldimines followed by alkene isomerization was disclosed, affording a series of functionalized 2-pyrroline derivatives in moderate chemical yields with random diastereoselectivities.
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CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Zonglin Lv,Yalin Qin,Yongcheng Zhang,Jingjing Fu,Chaojing Lu
To date there is no report on the photoluminescence property in Pr 3+ /Yb 3+ co-doped or Pr 3+ single doped ferroelectrics Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 , abbreviated as PMN-PT. This letter presents the efficient upconversion (UC) luminescence in 0.75PMN-0.25PT:1.5%Pr/ y Yb transparent ceramics together with luminescence mechanism. When the transparent ceramics were excited by 980 nm laser, strong visible UC emissions at 491, 529, 539, 623, 649, 685, 710 and 737 nm were detected, besides strong near-infrared down-conversion emissions of Pr 3+ at 1061 nm and of Yb 3+ around 1006 nm. The visible UC emission was found to be a two-photon process and sensitized by Yb 3+ . The intensities of the visible UC emissions saturate at higher pump power above 1.65 W when the Yb 3+ concentration y ≥ 3%. The intensity saturation results from the depletion of ground state population and reverse energy transfer in cross-relaxation way. Relative to the intensities of the red emissions, those of the blue-green emissions decrease remarkably as the Yb 3+ content increases. This interesting phenomenon can be attributed to the higher local symmetry of Pr 3+ sites in the ceramics of higher Yb 3+ content. The various photoluminescence properties and excellent ferroelectric properties make our Pr 3+ /Yb 3+ -doped transparent ceramics promising multifunctional optical luminescence materials.
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RSC Advances
·
2018
·Vol. 8
·期 4
·1940-1947
·
IF 2.936
Pengchao Wang,Bohua Dong,Zhenjie Cui,Rongjie Gao,Ge Su,Wei Wang,Lixin Cao
Metal-halide perovskite nanocrystals (NCs) are considered to be promising types of optoelectronic and photonic materials. The emission colors of the cesium lead halide perovskite (CsPbX3, X = Cl, Br, I) NCs depend on the joint influence of the emission peaks of the host and its dopant ions. Herein, we report a phosphine-free strategy to synthesize Mn-doped CsPb(Cl/Br)3 NCs to tune their optical properties in a wide color gamut. Colloidal Mn-doped CsPb(Cl/Br)3 NCs were synthesized by injecting Cs-oleate solution into the MnCl2 and PbBr2 precursor solution. The as-prepared Mn-doped CsPb(Cl/Br)3 NCs are highly crystalline and uniform sized nanocubes with two emission peaks, including the host emission around 450 nm and the Mn2+ dopant emission around 600 nm, which are sensitive to the MnCl2-to-PbBr2 molar feed ratio and the reaction temperature. By varying the MnCl2-to-PbBr2 molar feed ratio or the reaction temperature, the relative PL intensities of dual color emission can be manipulated, showing their ability in tunable color output.
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IONICS
·
2023
·Vol. 29
·期 6
·2271-2285
·
IF 2.8
Yan Ji,Zhu Jiuzhou,Zhang Libo,Li Yan,Wang Heng,Wang Lizhen
Lithium-sulfur batteries present a promising potential in meeting the demand of high energy and low-cost energy storage system. However, it suffers from the severe shuttle effect of lithium polysulfides and sluggish sulfur chemistry kinetics. Herein, NASICON-type ceramic material Na 3 V 2 (PO 4 ) 3 is developed to decorate on polypropylene (PP) membrane as a catalysis layer to adsorb lithium polysulfides and accelerate the conversion of sulfur electrochemistry redox reaction. Meanwhile, the sophisticated architecture on separator provides additional lithium ion intercalaction-extraction behavior, which helps to hamper the shuttle effect of lithium polysulfides. The collaborative contribution of above virtues endows the Li–S batteries with excellent capacitive performance of 1045.3 mA h g −1 at 0.2 C current density, superior rate capability (590.4 mA h g −1 ) at 4 C although the cycling stability over 400 cycles at 4C is still needed to improve. This work offers an elaborate ceramic coating layer engineering on separator to act as an electro-catalyst role to improve the conversion reversibility and kinetics in lithium sulfur battery with high-energy.
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IONICS
·
2024
·Vol. 30
·期 4
·2019-2028
·
IF 2.4
Chen Long,Zhu Feng,Ma Dongjuan,Liu Yan,Yan Fang,Qiu Jingyi,Cao Gaoping,Zhang Hao
Lithium ion (Li + ) battery with conventional liquid electrolyte has typical and notorious security risk. Composite solid electrolyte integrating the merits of various electrolyte systems is an attractive alternative of liquid electrolyte for new-type safety and long-life lithium (Li) batteries. Herein, a 3D framework composite solid electrolyte based on Al 2 O 3 -modified Li 1.4 Al 0.4 Ti 1.6 (PO 4 ) 3 (Al 2 O 3 @LATP) was prepared by solution casting and scraping method. The 3D framework composite electrolyte exhibits admirable ionic conductivity (1.1 × 10 −4 S cm −1 at 60 °C), wide voltage window (4.8 V vs. Li/Li + ), good thermal stability, and satisfactory electrolyte/electrode interfacial compatibility. The Al 2 O 3 @LATP can not only impede Li dendrite growth, but also avoid the LATP reaction with Li anode. The assembled solid-state LiFePO 4 |Li battery with 3D framework composite solid electrolyte delivers a satisfactory capacity retention up to 95.2% after 400 cycles at 0.5 C and under 60 °C. The 3D framework structural design of solid electrolyte affords a promising option for realizing safe energy storage systems.
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Advanced Optical Materials
·
2021
·Vol. 10
·期 4
·2102041
·
IF 9.926
Yangyi Zhang,Songyang Yuan,Yaxuan Yuan,Yunkai Bao,Qing Ran,Enming Liu,Jiandong Fan,Wenzhe Li
Organic–inorganic hybrid metal halide perovskites have played an important role in optoelectronic and photonic community owing to their remarkably high photoluminescence quantum yields and color tunability with ultrafast emission performance. Herein, two kinds of novel perovskite single crystals, i.e., TpyInCl 3 and TpyInCl 5 , grown by means of a solution-processed hydrothermal method are innovatively designed. Regulating the polarity of the precursor solution allows to fine-tune the light emission from pink to blue with an extremely short photoluminescence lifetime of 2.5 ns. The density functional theory calculations reveal that the unique luminescence characteristics are associated with the contribution of the terpyridine π–π* transition and the exciton quenching in the inorganic framework, that is, InCl 3 /[In 2 Cl 10 ] 4− , wherein the reduction of the recombination path and the increase of exciton quenching can effectively increase the luminous intensity. The current study provides a new paradigm toward designing multifunctional perovskite materials with tunable structure and electron dimension in emitter devices.
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