Energy Materials
·
2026
·Vol. 6
·期 8
·N
·
IF 11.9
Leyan She\u003Csup\u003E1\u003C\u002Fsup\u003E,Jiaxin Meng\u003Csup\u003E1\u003C\u002Fsup\u003E,Lide Li\u003Csup\u003E1\u003C\u002Fsup\u003E,Litao Liang\u003Csup\u003E1\u003C\u002Fsup\u003E,Routong Chen\u003Csup\u003E1\u003C\u002Fsup\u003E,Shiyi Tan\u003Csup\u003E1\u003C\u002Fsup\u003E,Guozhen Zhang\u003Csup\u003E1\u003C\u002Fsup\u003E,He Liu\u003Csup\u003E1\u003C\u002Fsup\u003E,Cong Guo\u003Csup\u003E1\u003C\u002Fsup\u003E,Weizhai Bao\u003Csup\u003E1\u003C\u002Fsup\u003E,Jingfa Li\u003Csup\u003E1\u003C\u002Fsup\u003E,Qian Liu\u003Csup\u003E2\u003C\u002Fsup\u003E,Feng Yu\u003Csup\u003E1,\u003C\u002Fsup\u003E,Hongxia Wang\u003Csup\u003E2,\u003C\u002Fsup\u003E
Aqueous bromine batteries hold promise for safe and low-cost large-scale energy storage, but their practical energy density is limited by the restricted voltage of conventional single-electrolyte systems. Herein, we develop a pH-asymmetric aqueous Sn-Br battery by decoupling an acidic bromine catholyte from an alkaline Sn anolyte using a bipolar membrane. The acidic catholyte maintains reversible Br-/Br3- conversion, whereas the alkaline anolyte enables low-potential Sn hydroxo-complex redox chemistry. This acid-alkaline configuration converts the pH-dependent redox asymmetry of Sn into an enlarged full-cell voltage window. A surface-regulated Sn anode is further employed to improve interfacial stability and redox reversibility, while the voltage enhancement primarily originates from pH-decoupled Sn-Br redox chemistry. Potential-alignment analysis shows that switching Sn from acidic Sn/Sn2+ redox to alkaline hydroxo-complex redox increases the theoretical Sn-Br potential gap from approximately 1.2 V to above 2.0 V. In situ Ultraviolet-Visible (UV-vis) Absorption spectroscopy confirms reversible bromine-species evolution during charge/discharge, demonstrating the compatibility of bromine redox chemistry with high-voltage operation. The resulting pH-asymmetric Sn-Br full cell achieves a voltage window of up to 2.3 V, delivers a specific capacity of approximately 172.2 mAh g-1 at 3 A g-1, and maintains 98% capacity retention over 6,000 cycles with Coulombic efficiency above 97%. This study highlights pH decoupling as a powerful strategy for designing high-voltage aqueous conversion batteries based on pH-dependent metal redox chemistry.
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高影响因子
MATERIALS LETTERS
·
2025
·
IF 2.7
Peigen Zhang,Cheng Zhang,Xinxin Xia,Zhenglin Zou,Wei Zheng,ZhengMing Sun
Tin (Sn) whiskers pose significant reliability risks in electronics, especially with the transition to lead-free solders. Mitigating Sn whisker growth remains a significant challenge. Here, Ti 2 SnC is used as a model to provide atomized Sn, which is the key driver for Sn whisker growth, and graphene is introduced to inhibit Sn whisker growth. Mechanochemical decomposition of Ti 2 SnC via ball milling releases atomized Sn, which is incorporated into a Sn matrix by thermo-compression to assess its effect on whisker formation. Adding graphene to the composite restricts long-range Sn diffusion, significantly reducing whisker length and density. Graphene's two-dimensional structure forms nanoscale diffusion barriers, hindering atomic migration and aggregation. These dispersed graphene nano-walls inhibit whisker growth effectively without damaging the bulk matrix, providing a promising approach to enhance reliability in lead-free solder systems.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Huifang Jing,Yunzhen Jia,Qiang Fang,Xuelei Lang,Yantao Zhao,Dazhong Zhong,Jinping Li,Qiang Zhao
The electrochemical CO 2 reduction reaction (CO 2 RR) to formate represents a promising route for high-value CO 2 utilization. Which helps address environmental issues and enables energy storage. Tin (Sn)-based catalysts are widely used in CO 2 RR for formate production, yet the impact of crystal facets remains unreported. Here, we revealed the effect of Sn facets on CO 2 RR to formate. Sn electrodes with different facet preferences were obtained by controlling the electroreduction rate. The Sn-3 electrode with preferential (101) facet exposure achieved 87.8 % Faradaic efficiency (FE) for formate with a large partial current density ( j ), which is higher than that with abundant (200) facet (Sn-1) and a mixture of (200) and (101) facets (Sn-2). In membrane electrode assembly (MEA), the FE HCOOH of 88.5 % was obtained at the large current density of 500 mA cm −2 on Sn-3. Theoretical calculations and comprehensive experimental investigations revealed that the Sn(101) facet is conducive to the adsorption of *OCHO, thereby reducing the reaction energy barrier and enhancing formate generation during CO 2 RR. This work provides an understanding of Sn crystal facets for efficient CO 2 RR to formate.
研究领域:
电化学
·
材料科学
·
环境科学
·
能源存储
·
催化
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DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Lu Zhang,Xin Qi,Hai-Yang Yu,Ting-Ting Li,Hong-Yang Wang,Ching-Wen Lou
Superhydrophobic surfaces can delay icing to a certain extent, but under severe conditions, such as extremely low temperatures and high humidity, ice buildup on their surfaces can still occur. Therefore, in this study, a titanium-based photothermal anti-/deicing fabric with a superhydrophobic surface was introduced, which was impregnated with hydrophobic SiO2-TiO2 Janus particles (H-SiO2-TiO2 JPs) and the silicone elastomer polydimethylsiloxane (PDMS) to endow it with superhydrophobic and photocatalytic properties, and then, titanium nitride nanoparticles (TiN NPs) were deposited on the surface of the cotton fabric to provide it with photothermal properties. A TiN-coated superhydrophobic cotton fabric (TiN-SCF) integrating self-cleaning, photothermal conversion, and photocatalysis was successfully prepared. The experimental data show that TiN-SCF has excellent superhydrophobicity (a contact angle of 159° when TiN is 2.2 wt % and H-SiO2-TiO2 JPs are 1.25 wt %). TiN-SCF can warm to 66.2 °C in 300 s under 1 kW/m2 simulated solar irradiation. The synergy of the photothermal effect and superhydrophobicity is good for anti-/deicing. TiN-SCF also has significant photocatalytic activity (64% Rhodamine B solution degradation in 6 h). The research results offer ideas and support to solve ice and pollution problems and are expected to promote industry development.
研究领域:
材料科学
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纳米技术
·
表面工程
·
光热转换
·
催化
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DOI
PubMed
高影响因子
Nano Energy
·
2022
·
IF 19.069
Zhihao Li,Zhenhan Wang,Chunmei Jia,Zhi Wan,Chongyang Zhi,Can Li,Meihe Zhang,Chao Zhang,Zhen Li
Electron transport layer (ETL) is a key component in the perovskite solar cells (PSCs). Low temperature, even room temperature deposition technique for ETLs is especially intriguing for flexible solar cell fabrication on polymer substrates . Here, we proposed a facile amine gas fuming strategy to prepare SnO 2 ETLs at room temperature without thermal annealing. It is found that the SnO 2 films treated with methylamine or other amine gases are smoother and more compact than the SnO 2 films with thermal annealing. A base-catalyzed densification mechanism is proposed that the SnO 2 colloidal is converted into compact film through particle connections and attachments facilitated by basic amine gas treatments. XRD , FTIR and TEM were used to verify the densification mechanism. With methylamine treated SnO 2 ETLs, the rigid and flexible PSCs achieved high PCEs of 20.36% and 19.80%, respectively. The flexible PSCs with the annealing free SnO 2 ETLs showed excellent flexibility with 94.5% of the initial PCE remaining after 3000 bending cycles. The amine fuming method provides a new and facile way for annealing free deposition of charge transport layers for flexible solar cells and optoelectronics .
研究领域:
材料科学
·
能源技术
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高影响因子
THIN SOLID FILMS
·
2024
·
IF 2
Wenjin Zeng,Yuting Shi,Chaochao Yuan,Enzhi Li,Jiahao Li,Qiaoli Niu,Ruidong Xia,Yong Min,Xinwen Peng
The quality of the hole transport layer (HTL) is crucial for the overall efficiency of the perovskite solar cells. Although poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonic acid) (PEDOT:PSS) has been widely used as HTL for the perovskite solar cells, there is still room for further improvement of PEDOT:PSS by optimizing its energy level matching and the hole transfer efficiency. Based on the present issues of applying PEDOT:PSS as HTL in tin-based perovskite solar cells, the Lewis alkali acrylamide (AM), which contains both carbon-carbon double bond and the electrophilic amide group, is applied as the dopant in PEDOT:PSS solution. By analyzing the surface morphology and the crystal structure, it is revealed that AM can effectively improve both the quality and crystallinity of the formamidinium tin tri-iodide (FASnI 3 ) perovskite film, with the defects of the perovskite film greatly suppressed. The grain size of the modified FASnI 3 perovskite is observed to increase with the surface roughness reducing at the same time, along with the charge recombination resistance of the FASnI 3 perovskite film increasing. As a result, the modified devices have a higher short-circuit current, fill factor as well as power conversion efficiency. The characterization of the surface contact angle indicates that a more hydrophobic surface is formed as for the FASnI 3 perovskite film, which could efficiently retard the ambient vapor penetrating into the perovskite film.
研究领域:
材料科学
·
能源科学
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 12
·e6591
·
IF 3.1
Chuanbo Cong,Mingyang Yuan,Han Wang,Rehan Umer,Daigang Peng,Jianglin Ouyang
In order to improve the thermal stability of silicone rubber (SR), cerium-tin composite oxides (CeSnO-x) are used as thermo-oxidative stabilizer in phenyl methyl vinyl silicone rubber (PVMQ). CeSnO-x are synthesized via the sol–gel method and characterized by scanning electron microscopy, x-ray diffraction, and X-ray photoelectron spectroscopy (XPS) showing that tin doping led to more oxygen vacancies in CeSnO-x compared to CeO 2 . Through thermogravimetric analyzer, differential scanning alorimetry (DSC) and average activation energy calculation of PVMQ with different thermo-oxidative stabilizer, it was found that CeSnO-8 is outperforming CeO 2 , SnO 2 , and their mixtures in improving the thermo-oxidative stability of PVMQ. In mechanical property tests, due to tin doping, CeSnO-8 exhibit superior performance at all stages during thermo-oxidative aging comparing the different effects of CeO 2 and SnO 2 in different aging stages. XPS of PVMQ composites investigate the mechanism by which CeSnO-8 exhibit different effects. Fourier transform infrared spectroscopy characterizing the Si-C and Si-O bond changes in PVMQ composite before and after aging and the measurement of Mc explore thermo-oxidative stabilizers' role during thermo-oxidative aging of PVMQ. Thermogravimetry-infrared spectroscopy comparisons between unstabilized PVMQ and CeSnO-8-stabilized PVMQ show that CeSnO-8 effectively quenched radicals produced by the oxidation of the PVMQ side group, but exacerbate degradation caused by molecular chain rearrangement.
研究领域:
材料科学
·
化学工程
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Jinbiao Yang,Lidong Gao,Yuede Pan,Yeliang Jiao,Zhewei Yang,Gang Li,Kaiying Wang
Tin disulfide (SnS 2 ) is a promising anode material for sodium ion storage. In this study, we present a SnS 2 /4S composite with a molar ratio of 1:4 between SnS 2 and S, which was prepared through a simple melt-diffusion method, showing excellent sodium ion storage performance. The elemental sulfur in the composite provides additional capacity with its high specific capacity (1675 mAh g −1 ) and facilitates the interfacial charge transfer between the electrode and the electrolyte because soluble polysulfide anions can be formed during charge and discharge. Thus, the specific capacity of SnS 2 /4S has been maintained at 540.2 mAh g −1 after 150 cycles at a high current density of 5 A g −1 . In addition, the initial discharge capacity of the full cell SnS 2 /4S||Na 3 V 2 (PO 4 ) 3 is 555.1 mAh g −1 with a capacity retention of 95.7 % during 50 cycles. Our work provides a new composite engineering approach for the sodium ion storage study of SnS 2 .
研究领域:
材料科学
·
电化学
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高影响因子
Joule
·
2024
·
IF 38.6
Zuhao Yu,Qiong Wang,Yating Li,Fengyi Zhang,Xiaohui Ma,Xi Zhang,Yonggang Wang,Jianhang Huang,Yongyao Xia
Non-toxic metallic tin (Sn) possesses high hydrogen overpotential and environmental friendliness, which is favorable for high-performance aqueous batteries. However, the large particle size and irregular deposition morphology of Sn in acidic electrolyte dramatically decrease cycle stability. Here, we demonstrated that the inherent root for above issues is the high exchange current density of Sn/Sn 2+ in acidic electrolyte, and two effective approaches were presented (gelatin additives and methanesulfonic acid-based electrolyte). In particular, the methanesulfonic-acid-based electrolyte with unique complexing environment not only improves uniformity of deposited Sn but also suppresses the hydrogen evolution, conferring Sn/Sn 2+ with high average Coulombic efficiency of 99.95%. The assembled anode-free organic/Sn battery with lean electrolyte can exert unprecedented stability more than 4,000 cycles. Moreover, a scale-up anode-free battery with 23 mAh capacity sustained more than 1,000 cycles. The findings provide universal strategies to improve the stability of the Sn cycle, marking a solid step toward the practical application.
研究领域:
电化学
·
材料科学
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高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 12
·2200168
·
IF 10.05
Baoqing Wang,Zhimin Jing,Mingxi Zhao,Peng Yu,Eric Ashalley,Peihang Li,Cuiping Ma,Xin Tong,Roberto Caputo,Alexander O. Govorov,Hongxing Xu,Zhiming M. Wang
Photothermal superhydrophobic coatings are essential for a variety of applications including anti-icing and light-driven self-propelled motion. However, achieving a flexible and durable superhydrophobic coating with high photothermal efficiency and long-term stability is still challenging. Herein, a facile and eco-friendly approach to realizing a superhydrophobic coating with excellent flexibility is proposed. The coating is obtained by spraying titanium nitride (TiN) nanoparticles embedded in polydimethylsiloxane (PDMS) solution onto various substrates. A tight binding between the substrate and nanoparticles occurs that offers the coating the mechanical robustness to endure bending, twisting, abrasion, and tape peeling. The water repellency is retained even after 500 cycles of bending–twisting tests. Combined with the micro–nanoscale porous structure of the surface and plasmonic property of TiN nanoparticles, the coating shows excellent superhydrophobicity and high photothermal conversion properties. The equilibrium temperature of the coating is as high as 130 °C at room temperature under 1 W cm −2 of 808 nm near-infrared laser irradiation. Due to its flexible property, the coating can be easily applied to irregular surfaces, which, together with the excellent anticorrosion, anti-icing, and defrosting performances, makes it a reliable resource for multifunctional applications. This work offers a novel technological approach to flexible devices, wearable electronics, and smart textiles.
研究领域:
材料科学
·
纳米技术
·
表面工程
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DOI
高影响因子
MATERIALS LETTERS
·
2022
·
IF 3.574
Chensheng Wang,Weifeng Li,Yumei Long
This work demonstrates a facile molten-salt synthesis of carbon-titanium nitride (C-TiN) nanocomposites. The C-TiN nanoparticles showed excellent electrocatalytic activity and thus were employed for the electrochemical determination of dopamine (DA). By using a differential pulse voltammetry (DPV) method, a C-TiN modified glassy carbon electrode (C-TiN/GCE) presented a high sensitivity (9620 µA·µM·cm −2 ) in the determination of DA and its detection limit (LOD) was 0.03 µM (S/N = 3). Moreover, the C-TiN/GCE sensor was used to detect DA in human serum, and acceptable recoveries were obtained.
研究领域:
材料科学
·
分析化学
·
生物医学工程
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高影响因子
Materials
·
2019
·Vol. 12
·期 18
·3001
·
IF 2.972
Yue-Xing Chen,Fu Li,Delong Li,Zhuanghao Zheng,Jingting Luo,Ping Fan
Tin telluride (SnTe), with the same rock salt structure and similar band structure of PbTe alloys, was developed as a good thermoelectric material. In this work, SnTe quasi crystal was grown by vertical Bridgman method, with texturing degree achieved at 0.98. Two sets of samples, perpendicular and parallel to the growth direction, were cut to investigate thermoelectric properties. As a result, a carrier concentration (pH) of ~9.5 × 1020cm−3was obtained, which may have originated from fully generated Sn vacancies during the long term crystal growth. The relatively high Seebeck coefficient of ~30μVK−1and ~40μVK−1along the two directions was higher than most pristine SnTe reported in the literature, which leads to the room temperature (PF) for SnTe_IP and SnTe_OP achieved at ~14.0μWcm−1K−2and ~7.0μWcm−1K−2, respectively. Finally, the maximum dimensionless figure of merit (ZT) values were around 0.55 at 873 K.
研究领域:
材料科学
·
热电学
·
晶体生长
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DOI
高影响因子
危险品化学品经营许可证（带存储）