Journal of Energy Chemistry
·
2022
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IF 13.599
Xingyu Pu,Jiabao Yang,Tong Wang,Shuaici Cheng,Qi Cao,Junsong Zhao,Hui Chen,Yixin Zhang,Tingting Xu,Ilhom Tojiboyev,Hadi Salari,Xuanhua Li
All-inorganic CsPbI 2 Br perovskite solar cells (PSCs) have received extensive research interests recently. Nevertheless, their low efficiency and poor long-term stability are still obstacles for further commercial application. Herein, we demonstrate that high efficiency and exceptional long-term stability are realized by incorporating gadolinium(III) chloride (GdCl 3 ) into the CsPbI 2 Br perovskite film. The incorporation of GdCl 3 enhances the Goldschmidt tolerance factor of CsPbI 2 Br perovskite, yielding a dense perovskite film with small grains, thus the α-phase CsPbI 2 Br is remarkably stabilized. Additionally, it is found that the GdCl 3 -incorporated perovskite film achieves suppressed charge recombination and appropriate energy level alignment compared with the pristine CsPbI 2 Br film. The noticeable increment in efficiency from 14.01% (control PSC) to 16.24% is achieved for GdCl 3 -incorporated PSC. Moreover, the nonencapsulated GdCl 3 -incorporated PSC exhibits excellent environmental and thermal stability, remaining over 91% or 90% of the original efficiency after 1200 h aging at 40% relative humidity or 480 h heating at 85 °C in nitrogen glove box respectively. The encapsulated GdCl 3 -incorporated PSC presents an improved operational stability with over 88% of initial efficiency under maximum power point (MPP) tracking at 45 °C for 1000 h. This work presents an effective ion-incorporation approach for boosting efficiency and long-term stability of all-inorganic PSCs.
研究领域:
材料科学
·
能源研究
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Changpeng Xian,Ruilin He,Qianwei Chen,Qiulin Li,Yandong Ma,Shu-juan Bao,Wei Sun,Hao Chen,Maowen Xu
Aqueous rechargeable zinc-manganese batteries (AZMBs) are strong candidates for the next generation of energy storage technologies. However, poor cycling stability has greatly limited the commercialization process of AZMBs. The irreversible dissolution and low utilization of manganese-based cathodes impact cycling stability. Therefore, this work proposes a cathode for electrolytic zinc-manganese battery, where cobalt and nitrogen co-doped porous carbon with catalytic and adsorptive properties is grown on carbon nanotube films (CoNC-CFs). Through a synergistic approach of ion adsorption and catalytic conversion, it significantly enhances the reversible conversion efficiency of Mn 2+ /MnO 2 , leading to long-term cycling stability for AZMBs. This strategy utilizes the catalytic effect of cobalt to promote the uniform deposition of Mn 2+ during the charging process and ensures the efficient dissolution of the deposited material during discharge, thus achieving over 1300 reversible cycles at 1 mA cm −2 in a near-neutral sulfate electrolyte. This method offers new perspectives for the further development and application of AZMBs.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2024
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IF 4.4
Meng Zhang,Ying Zhang,Qianglong Xu,Xiaolan Li,Jing Chen,Hongpeng Jia
Energy shortage and environmental pollution problems force us to find low-energy consume methods to deal with volatile organic compounds (VOCs). In this work, Pt-P25 was synthesized through a simple wet impregnation method and calcination method. The study showed that different calcination temperatures and calcination atmospheres affected the activation state of Pt species, showing significant differences in the photothermal catalytic toluene oxidation reaction efficiency. The Pt-P25-800N sample activated in a nitrogen atmosphere at 800 oC exhibits better activity compared to other samples, achieving a toluene conversion rate of 95% and a mineralization rate of 65% under a light intensity of 400 mW/cm2. Characterization results demonstrate that low-valent Pt species are positively correlated with toluene oxidation activity and play a major role in the reaction. The ultraviolet (UV), visible (Vis) and infrared (IR) components in the spectrum all contribute to the toluene oxidation process. The catalytic bed is heated to the required temperature mainly through thermal effects and crosses the reaction energy barrier. The traditional photocatalytic process over TiO2 also plays an auxiliary enhancement role. Due to the efficient conversion capability of the active sites, Pt-P25-800N achieves long-term stability of at least 50 hours under low light intensity input and water vapor conditions, accompanied by minimal accumulation of intermediate products. The above results explain that the comprehensive effect between active Pt species and photothermal catalysis jointly achieves efficient degradation of VOCs and alleviates the energy and environmental crisis.
研究领域:
环境科学
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催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
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IF 8.4
Qian Wang,Changchao Zhou,Li Shen,Eryue Song,Yu Yang,Haiqian Lian,Rujing Hou,Yichang Pan
The pervaporation (PV) technology is attractive for azeotrope component separation of the MeOH/MTBE mixture due to the reduced energy and cost relative to the traditional ternary distillation process. However, the membrane separation performance is largely affected by its microstructure including pore size and shape as well as its surface properties such as hydrophilicity. Herein, we report a Co-gallate MOF membrane that features preferential adsorption and diffusion of methanol (MeOH) relative to the methyl tert -butyl ether (MTBE) molecules during the PV separation process. The high-quality Co-gallate MOF membrane has been prepared by introducing a regulator of KOH. The MeOH flux of the Co-gallate MOF membrane was 0.565 kg m −2 h −1 and the separation factor was up to 721 at 15 wt% MeOH/MTBE feed composition. It is worth noting that the separation performance exceeds most of the reported membrane materials for MeOH/MTBE separation in the PV process. Furthermore, the separation performance of the Co-gallate MOF membrane for MeOH/MTBE mixtures remained almost unchanged over 70 h, indicating the reliable long-term stability of the membrane. Thus, the Co-gallate MOF membrane demonstrated a potential practical application for MeOH/MTBE separation.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Xianliang Ren,Liang Fang,Yi Hu,Fang Wu,Gaobin Liu,Shufang Zhang,Haijun Luo
MXenes are widely recognized as excellent dye adsorption materials. However, their propensity to oxidize will greatly reduce their stability and performance. In the present work, a simple antioxidation treatment was applied to TiVCTx using three acid antioxidants (oxalic acid (OA), sodium citrate (SC), and tartaric acid (TA)) and their effects on the stability and methylene blue adsorption performance were investigated. The stability of TiVCTx stored in an aqueous solution within 14 days was assessed using XRD and XPS. The antioxidant-treated TiVCTx showed a significant improvement in both long-term stability and MB adsorption properties, with TA-TiVCTx demonstrating the best performance. The MB adsorption of the as-prepared TiVCTx was physical and multilayer, but it became a multilayer process where physical and chemical adsorptions coexist after antioxidation treatment. The maximum adsorption capacity of TA-TiVCTx reached 8061.03 mg g−1 and remained at 3887.28 mg g−1 after 14 days of storage, far exceeding the performance of other reported adsorbents. It is found that the enhanced stability is attributed to the dense protective layer formed by the chelation between the antioxidant and TiVCTx, and the improved MB adsorption performance is ascribed to the synergistic effect of electrostatic adsorption between TiVCTx and MB and the Bloch reaction between the antioxidants and the MB molecules. The differences in the enhancement effects of the various antioxidants are related to the number of carboxyl and hydroxyl groups in the antioxidant molecules. This work provides useful reference and guidance for obtaining MXenes with better stability and adsorption performance.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Hui-Song Hu,Tian-Yu Zhao,Hao Li,Hai-Jing Sun,Lian-Kui Wu,Fa-He Cao
Zirconium-based conversion coatings (ZCC) have emerged as an environmentally sustainable alternative to traditional chromate conversion coatings (CCC) for aluminum alloy corrosion protection. However, their corrosion resistance remains inferior to CCC, limiting widespread adoption. In this study, we introduce a novel organic-reinforced ZCC incorporating ethylenediamine-tetramethyl phosphonic acid (EDTMP) on ADC12 aluminum alloy, significantly enhancing the corrosion resistance. Systematic electrochemical tests, copper sulfate test, and neutral salt spray (NSS) test demonstrated that the optimized coating with 1.0 g/L EDTMP exhibits outstanding performance, achieving a remarkably low corrosion current density ( i corr = 0.45 μA/cm²) and high total resistance ( R sum = 202,028.50 Ω·cm²). The ZCC-EDTMP-1.0 coating maintained a corrosion resistance efficiency ( η ) exceeding 91 % over 72 h of immersion in 3.5 wt. % NaCl solution, highlighting its long-term stability. NSS and copper sulfate tests further validate its robustness in harsh environments. This superior performance is attributed to EDTMP's ability to chelate metal ions, forming a densely interlocked and stable protective barrier. This work presents a promising strategy to enhance ZCC performance, offering a viable pathway for the industrial-scale adoption of eco-friendly, chromium-free conversion technologies.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
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2022
·
IF 3.754
Long Chen,Shuanglong Yuan,Aiping Chen,Chuanqi Liu,Hua Tong,Huidan Zeng
All-inorganic cesium lead halide perovskite nanocrystals (CPeNCs) have aroused tremendous research attention due to their excellent photophysical properties. Here, we report an eco-friendly and fast water-assisted mechanochemical synthesis of CsPbBr 3 perovskite functionalized by oleic acid (OA) and hydroxyl groups (OH). Owing to the water exfoliation and mechanical shearing force, the CsPbBr 3 bulks quickly transformed into rectangular CsPbBr 3 particles in 10 min with a bright green emission (λ em = 525 nm) and a high photoluminescence quantum yield (PLQY) up to 53%. Impressively, the functionalized CsPbBr 3 retains their bright green emission in ethanol after 360 days, showing high ethanol resistance. Thus, an alcohol solubility and easy film-forming transparent polymer of polyvinyl butyral (PVB) is directly employed to encapsulate functionalized CsPbBr 3 in ethanol solution. The obtained CsPbBr 3 /PVB composite film shows excellent water resistance, whose photoluminescence intensity drops only 20% after 60 h in water. The composite film was demonstrated as color converter layers of white light-emitting diodes device with color coordinates of (0.329, 0.321). This work not only offers a green synthesis method for perovskite fluorescent material, but also helps to address their long-term stability in polar solvents towards their various applications.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2020
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IF 6.984
Honghui Liao,Shengwei Guo,Yuan Liu,Qi Wang
In this work, form-stable phase change composites (PCCs) with high thermal conductivity and adjustable thermal management capacity are prepared based on phase change microcapsules (SiO 2 @SA) and surface-modified boron nitride (m-BN). The phase change properties are successfully infused into PCCs through the incorporation of microcapsules and the thermal conductivity can be elevated up to 0.506 Wm -1 K -1 . Furthermore, the phase change enthalpies of PCCs can be facilely tailored from 3.74 J/g to 18.52 J/g by changing the loading fraction of microcapsule, enabling adjustable thermal energy storage and thermal management ability. PCCs are proved to possess outstanding long-term stability even after 500 cycles of charging-discharging. Besides, practical application of PCCs as thermal regulating materials is explored through a self-designed temperature control system. Finally, the PCCs exhibit good leakage proof property at 100 °C due to the shielding effect of SiO 2 shell. These results show that this work offers a promising strategy for the development of advanced form-stable PCCs with good comprehensive properties.
研究领域:
材料科学
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热能工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Shoujuan Lai,Chunxiao Lv,Shuai Chen,Ping Lu,Xilin She,Li Wan,Hongwei Wang,Jin Sun,Dongjiang Yang,Xiaoliang Zhao
Transition metal phosphides (TMPs) have been regarded as an alternative to Pt-based catalysts for hydrogen evolution reaction (HER) on account of their high performance and low cost. The ultrathin two-dimensional (2D) nanosheets of TMPs can expose abundant active sites and facilitate the transfer of mass/charge to enhance HER performance. However, the synthesis of ultrathin 2D nanosheets of TMPs is still a great challenge. Herein, we reported a novel and scalable strategy to prepare 2D ultrathin nickel phosphide nanosheets (∼2.5 nm) by using alginate as precursor through ice-templating process. The role of ice-templating is that the growth of the ice crystals would squeeze Ni-alginate into 2D nanosheets, and then forming Ni-alginate aerogels . The three-dimensional (3D) interconnected porous network of aerogels was advantageous to reduce the lattice strains of subsequent oxidation and phosphorization process. It is the key step to prepare 2D ultrathin nickel phosphides (Ni 2 P and Ni 5 P 4 ) nanosheets. As expected, all the prepared Ni 5 P 4 nanosheet aerogels displayed remarkable HER performance in 1 M KOH electrolyte. Especially, due to their ultrathin 2D nanosheets and high P percentage, the Ni 5 P 4 -500-350 sample with excellent long-term stability exhibits a low overpotential of 147 mV at current density of 10 mA cm −2 and a low Tafel slope of 57 mV dec −1 .
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Jian Chen,Jianpo Chen,Hao Cui,Chengxin Wang
Designing a state-of-the-art nonprecious oxygen evolution reaction (OER) electrocatalyst with ultralong stability under high current density (≥100 h under 1000 mA cm–2) is greatly desirable for the viable electrolysis of water. The synthesis of nanostructure catalysts is an effective method for improving the OER performance, but nanostructure-based catalysts are easily destroyed by mechanical force via the vigorous oxygen gas evolution process at a high current density. Herein, we present a facile strategy of N-anion and Fe-cation dual doping to construct a three-dimensional self-supported nickel selenide film-based catalyst via a one-step chemical vapor deposition process. The film exhibits outstanding OER activity with a small Tafel slope of 34.86 mV dec–1 and an overpotential of 267 mV at 100 mA cm–2 in 1 M KOH media. Impressively, the film-based catalyst can maintain this excellent catalytic activity over 100 h, even when operated at a high current density of 1 A cm–2, thus exhibiting the best reported OER stability under high current density so far. Further studies reveal that anion–cation co-doping can simultaneously modulate the electronic state and phase structure of nickel selenide, thereby promoting the in situ formation and transformation of oxygen-vacancy-rich amorphous OER active species and resulting in the superior OER performance of the film-based catalyst.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Sustainable Systems
·
2022
·Vol. 6
·期 10
·2200196
·
IF 6.737
Haojie Shao,Yutong Wu,Xin Xu,Yuxi Xian,Yangyang Shi,Feihong Wang,Kai Lv,Chuntian Tan,Luyuan Hao,Binbin Dong,Simeon Agathopoulos
The industrial application of powder-based catalytic electrodes is heavily restricted by powder shedding, inhibition of active sites, and poor long-term stability. Herein, a porous titanium carbonitride (TiC 0.5 N 0.5 ) ceramic substrate with open straight finger-like holes is first made by a simple approach of phase-inversion tape-casting and pressureless sintering, and then a Co x Ni 1- x P active layer is in situ formed by a hydrothermal technique and phosphorization to achieve integrated Co x Ni 1- x P/TiC 0.5 N 0.5 self-supported ceramic electrodes. Electrochemical tests reveal that the optimized Co 0.9 Ni 0.1 P/TiC 0.5 N 0.5 electrode exhibits overpotentials of 76.5 and 79.8 mV at 10 mA cm −2 , Tafel slopes of 47.3 and 40.5 mV dec −1 , in 0.5 m H 2 SO 4 and 1 m KOH, respectively. Furthermore, its superior long-term stability and resistance to corrosion can be achieved for more than 20 h in both media at 100 mA cm −2 . In addition, the Co 0.9 Ni 0.1 P/TiC 0.5 N 0.5 electrode has much better performance than Pt/C at high current density in neutral media. Density functional theory calculations confirm that the Ni substitution of 1/10 Co in CoP leads to the more optimal |Δ G H* | among the Co x Ni 1- x P catalysts. Compared with other CoP or NiP-based electrodes, the Co 0.9 Ni 0.1 P/TiC 0.5 N 0.5 electrode benefits from high strength, unique pore structure, tight and compatible bonding, and high hydrophilicity.
研究领域:
材料科学
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电化学
·
催化作用
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
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IF 10.53
Ke Chen,Linhan Ni,Hao Zhang,Chengming Xiao,Li Li,Xin Guo,Junwen Qi,Chaohai Wang,Xiuyun Sun,Jiansheng Li
Rational design of fillers and polymers is of great importance to fabricate mixed matrix membranes (MMMs) with high performance. In this work, fluorinated metal-organic frameworks (KAUST-7 (also referred as NbOFFIVE-1-Ni)) were adopted as nanofillers to prepare MMMs through physically blending into the polymer of intrinsic microporosity (PIM-1). Benefiting from the features of porous KAUST-7, including well CO 2 affinity, distinctive pore characteristics (size, shape, and functionality) and strong intermolecular interactions with PIM-1, the achieved MMMs demonstrated increased CO 2 /CH 4 separation performance and improved anti-physical aging property. Specifically, with the assistance of KAUST-7, the CO 2 permeability and CO 2 /CH 4 (30:70 vol%) selectivity of the optimized MMMs increased up to 5928 Barrer and 23.5, corresponding to improvements of 50% of and 88% of the permeability and selectivity compared with the pristine membranes, respectively. Importantly, 100-h continuous separation test results confirmed the satisfying long-term stability of the prepared MMMs. Notably, the MMMs maintained 91% of the initial CO 2 permeability after 150 days (decreased only 539 Barrer), implying that the CO 2 permeability decrement is about 5-fold lower than that of the control PIM-1 membrane. These results suggest that the fabricated MMMs are promising candidates for CO 2 separation in practical applications.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）