Journal of Energy Storage
·
2025
·
IF 9.8
Yufeng Xue,Xiaolin Ye,Zhuonan Yu,Zihao Peng,Shuqing Xing,Jinrong Chen,Qixing Wu,Xuelong Zhou
As global energy demand continues to grow, developing scalable and efficient energy storage systems with high energy density becomes increasingly critical. This study addresses these needs by exploring the use of mixed-acid electrolytes and premixed configurations in Sn-Fe redox flow batteries. We demonstrate significant improvements in solubility, electrochemical stability, and cycling durability. Specifically, incorporating sulfate ions into the electrolyte mitigates the common-ion effect, greatly increasing the solubility of ferrous and stannous chlorides and enabling higher energy densities of 24.22 Wh·L −1 at 80 mA cm −2 under room temperature. Electrochemical analyses reveals that sulfate ions positively shift the Sn 2+ /Sn redox potential by 120 mV at the negative side and also expand the operational voltage window beyond 1.44 V vs. SHE at positive side, significantly reducing undesirable side reactions such as chlorine evolution. Sulfate-rich electrolytes maintain superior stability, achieving coulombic efficiencies above 98 % under diverse operating temperatures. Additionally, a novel hydrogen-Fe 3+ rebalancing method is developed to effectively address Fe 3+ accumulation, restoring battery capacity from near depletion to around 15 Wh·L −1 . These findings underline the potential of mixed-acid premixed electrolyte systems and hydrogen-mediated rebalancing as robust strategies for advancing high-performance, scalable, and sustainable aqueous energy storage solutions.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Shiyu Cao,Zhenyu Fu,Bokang Liu,Yawen Wu,Qiang Shen,Fei Chen
Succinonitrile (SN)-based plastic crystal electrolytes (PCEs) show great potential for solid-state batteries, but their practical application is limited by poor interfacial stability with lithium metal anodes. To address this critical challenge, an asymmetric bilayer composite electrolyte was designed, which consists of a porous PVDF-SN-LiTFSI-LiDFOB (PSTD) catholyte ensuring fast Li + transport, and a dense PVDF-LLZO-LiTFSI (PLT) anolyte serving as a robust protective layer. Notably, the PLT anolyte acts not only as a physical barrier against Li dendrites but also as a chemical buffer that facilitates the in-situ formation of a robust, tailored SEI from migrant additives, synergistically suppressing harmful side reactions. The resulting bilayer electrolyte exhibits a high ionic conductivity of 3.1 × 10 −4 S cm −1 at 30 °C and a wide electrochemical window of 4.85 V. As a result, the LFP/Li cells demonstrate excellent long-term cycling stability, delivering a high discharge capacity of 144.8 mAh g −1 and a retention rate of 95.9 % after 500 cycles at 1 C and 30 °C.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 109
·期 1
·e70407
·
IF 3.8
Yuwei Zhang,Cuiwei Li,Guangjin Chen,Chenran Zhao,Zhikun Song,Kepi Chen,Haoran Sun,Linghao Wu,Junhui Xiang
A series of (Y, Yb, Zr, Hf, Sn, W)O 2−δ high-entropy ceramics with varying mole fraction of main elements were synthesized for the first time through the solid-state reaction synthesis method. The microstructure, phase composition, and properties of the prepared materials were thoroughly analyzed and tested. The results indicate that the phase composition transformed from a single-phase fluorite structure to a single-phase C-type rare earth sesquioxide structure as the mole fraction of +3 cations increases. The thermal conductivity of the prepared high-entropy ceramics with porosity of 49.8%–50.1% is very low ranging from 0.33 to 0.37 W·m −1 ·K −1 . Among them, the single-phase C-type rare earth sesquioxide with a higher oxygen vacancy concentration was employed as a catalyst in the CO 2 hydrogenation reaction, attaining a high CO 2 conversion rate of 82.0%. The obtained results have deepened understanding of the role of oxygen vacancies and have important guiding significance for the study of high-entropy oxides with fluorite derived structures.
研究领域:
材料科学
·
陶瓷
·
催化
·
能源材料
·
固态化学
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Jinxian Feng,Wendi Zhang,Lun Li,Yuxuan Xiao,Yatai Li,Xiaoling Lai,Weng Fai Ip,Hui Pan
The composition of a catalyst significantly influences its reconstruction, which is critical for electrochemical CO 2 reduction reaction (e-CO 2 RR). However, the mechanisms of how elemental composition affect the reconstructed structure and enhance e-CO 2 RR performance require further exploration. In this study, we modulate the Sn/Zn ratios in Sn-Zn alloy precursors to promote CO 2 -to-formate (HCOO⁻) conversion through a self-adaptive reconstructed structure with potential changing. Notably, the electrocatalyst exhibits exceptional CO 2 -to-HCOO⁻ performance at a Sn/Zn mass ratio of 1:1 (SnZn-55), achieving a Faraday efficiency (FE) >82% across a wide potential range (-0.73 to -1.13 V), a high HCOO⁻ partial current density of 45.75 mA cm⁻² at potential of highest HCOO- FE (92% at -0.93 V) and stability for up to 2000 hours. Systematic studies reveal that the reconstructed Sn-Zn metal/oxide-hydr oxide hybrid in SnZn-55 adapts dynamically to varying potentials, enhancing CO 2 -to-HCOO⁻ conversion by promoting proton accumulation, suppressing hydrogen evolution, and facilitating CO 2 -to-HCOO - basic steps. These findings provide deep insights into the interplay between elemental composition, reconstructed structure, and e-CO 2 RR performance, offering valuable guidance for designing advanced electrocatalysts for efficient CO 2 reduction in broad potential range.
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INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 13
·18562-18572
·
IF 4.672
Bo Tang,Hefei Fan,Qianfeng Liu,Qiang Zhang,Min Liu,Erdong Wang
Summary Aqueous zinc batteries (AZBs) hold great promise for advancing applications in next-generation energy storage devices because of their high safety, high energy density, and low cost. However, zinc metal anodes have greatly impeded the application in AZBs due to their poor cycle performance. Short lifespan, which is caused by dendritic growth, deformation, corrosion, and competing hydrogen evolution, is very tricky. Herein, a stable Sn@Cu foam, prepared by plating tin on copper foam, is reported as the substrate of Zn anodes. We evaluate the quality of plating tin layers, which are prepared by using different tin salt solutions, and Na 2 SnO 3 solution is eventually selected. Electrochemical tests show that Sn@Cu foam can not only inherit the merits of Cu foam but also suppress hydrogen evolution reaction and lower the initial heterogeneous nucleation barrier of deposited Zn. Moreover, in situ observation by optical microscope demonstrates that Zn dendrite growth on Sn layer is suppressed during the plating-stripping process. As a result, a compact Zn layer on Sn@Cu foam is obtained (Zn/Sn@Cu foam), symmetrical cells display superior cycling life of 1800 h at 1 mA cm −2 for 1 mAh cm −2 , and full cells with VO 2 cathode deliver remarkably better cycling stability and longer lifespan.
研究领域:
材料科学
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电化学
·
能源存储
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高影响因子
Small
·
2026
·
IF 12.1
Huimin Su,Shuguang Zhang,Kangxin Shen,Qi Zhou,Jintao Xu,Jiale Huang,Yutian Liu,Jiajun Lin,Luyu Liu,Linfeng Lan,Junbiao Peng
Tin (Sn)-based halide perovskites are promising for the semiconductor layer of thin-film transistors (TFTs) owing to their intrinsic p-type conductivity and environmental friendliness relative to lead-based counterparts. However, Sn 2+ oxidation, poor film morphology, and high defect density severely limit their performance. Herein, cyanuric fluoride (Cy-F), a multifunctional additive, is introduced into 2D phenylethylamine iodide (PEA 2 SnI 4 ) to improve film quality and device performance. Cy-F strongly interacts with PEA + and Sn 2+ , enhancing PEA + anchoring, suppressing Sn 2+ oxidation, reducing pinholes, and passivating defects, thus forming uniform, well-oriented films. With optimized 12 vol% Cy-F doping, the TFT achieves a mobility of 1.88 cm 2 V −1 s −1 (more than one order higher than the pristine device's 0.15 cm 2 V −1 s −1 ). Concurrently, interface trap density decreases from 9.8 × 10 12 to 1.8 × 10 12 cm −2 eV −1 , significantly reducing the sweep hysteresis. Operational stability tests show the doped TFT retains 90% of initial drain current under negative bias stress for over 2000 s, with noticeable current recovery later. This work demonstrates Cy-F as an effective additive for optimizing film morphology and charge transport, offering a new strategy for high-performance, stable Sn-based perovskite TFTs.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 33
·13373-13386
·
IF 4.5
Shi Chonghua,Liu Xinyu,Fu Hang,Wang Jing,Yao Shaowei
As one of the most promising high-capacity anode materials for lithium-ion batteries, Sn-based anode materials have the advantages of high capacity (994 mAh g −1 ) and low price. But the anode material has large volume expansion during the cycle process, resulting in battery capacity attenuation. Therefore, carbon wrapping is used to alleviate this problem. In this work, SnO 2 nanoparticles are coated by electrospinning technology, and microspherical Sn@C composite materials are obtained after further heat treatment. The results show that when the content of SnO 2 nanoparticles is 0.13 g, the obtained Sn@C microsphere electrode material still has a high reversible discharge specific capacity of 616.90 mAh g −1 after 100 cycles at a current density of 100 mA g −1 . When the current density is 500 mA g −1 , the specific capacity is still as high as 558.20 mAh g −1 after 500 cycles, and the Sn@C microsphere electrode material exhibits excellent electrochemical performance. This provides an idea for developing high performance anode materials for lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
·
功能材料
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高影响因子
ELECTROCHIMICA ACTA
·
2012
·
IF 3.832
Xiaolei Sun,Xinghui Wang,Li Qiao,Duokai Hu,Na Feng,Xiuwan Li,Yingqi Liu,Deyan He
Porous SnO 2 –Sn/C composites have been synthesized via directly pyrolysis of mixtures of SnO 2 powder and poly(vinylidene fluoride) without any surfactant addition and other treatment. The composites are composed of SnO 2 and Sn nanoparticles which are well encapsulated in porous carbon matrix as characterized by transmission electron microscopy, X-ray powder diffraction and micro-Raman spectrometer. The obtained materials were used as anode for lithium ion batteries, a discharge capacity of 1171 mAh g −1 and a charge capacity of 611 mAh g −1 were shown in the first cycle at a current density of 100 mA g −1 , and good cycling performance achieved even at current density as high as 800 mA g −1 . The good electrochemical behaviors could be attributed to the formation of Sn nanoparticles which can increase the reversible capacity and the porous carbon matrix which is of excellent buffering effect and high electronic conductivity.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
锂离子电池
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高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Sikang Wei,Yang Xu,Shihong Tian,Zhaohui Han,Lei Xu
In this study, Al-Mg-Sn-Ga anode material prepared by heating up to 800 °C in microwave field under different powers and heating up to 800 °C in conventional field is compared. The microstructure and corrosion morphology of aluminum alloy anode are observed by electron backscatter diffraction(EBSD) and scanning electron microscopy(SEM), and Tafel polarization curve , electrochemical impedance spectroscopy (EIS) and constant current are characterized by different melting modes. The results are showed that microwave can change the grain orientation of aluminum alloy anode and corrosion forms, compared to the conventional technology, the microstructure of the alloy electrode material can grow preferentially at (001), improve alloy anode electrochemical properties , by pitting corrosion forms into a uniform corrosion , improves the corrosion resistance of the anode and the anode utilization. At the same time, aluminum alloy anode has excellent discharge performance under microwave 2000 W treatment. The energy density and capacity density are 2729.3 Wh·kg −1 and 2596.6 mAh·g −1 , respectively, which are 44.03% and 42.26% higher than those of conventional muffle furnace melting. Therefore, microwave technology can improve the electrochemical performance by affecting the microstructure of alloy materials.
研究领域:
材料科学
·
电化学
·
金属腐蚀与防护
·
能源材料
·
功能材料
·
冶金工程
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yu Xin,Haoyi Mou,Chang Miao,Shuqing Nie,Minyue Wen,Guowen He,Wei Xiao
The SnCu-SiO 2 @CNFs composite nanofibers are successfully fabricated by electrospinning and subsequent heat treatments, in which the Sn-Cu alloy particles are uniformly confined in carbon nanofibers (CNFs) in the presence of SiO 2 . The characterization results show that incorporating SiO 2 into the CNFs matrix can mitigate the problem of the phase separation between Sn-Cu alloy particles and CNFs and increase the fibrous structural integrity of the composite electrodes. Importantly, the SnCu-SiO 2 @CNFs-1.0 composite electrode displays the improved electrochemical performance when the amount of Cu(Ac) 2 is controlled at 1.0 mmol, in which the discharge specific capacity of the electrode not only delivers 501.8 mAh/g after 100 cycles at 100 mA/g, but also retains 467.4 mAh/g after rate cycles when the current density is abruptly recovered to 100 mA/g. Moreover, the SnCu-SiO 2 @CNFs-1.0 electrode can possess an enhanced Li + diffusion coefficient of approximately 1.58 × 10 −16 cm 2 s −1 and a high Warburg coefficient of 568.9 Ω cm 2 s −0.5 at room temperature. The enhanced electrochemical performance can be partly ascribed to the complete encapsulation of Sn-Cu alloy particles by the CNFs matrix, and partly to the promotion of the over-all electronic conductivity. Furthermore, the flexible and conductive CNFs matrix and the stable Cu 6 Sn 5 phase can conjoinedly accommodate the volume change of the electrodes during charge/discharge processes. Therefore, the facile strategy for encapsulating Sn-Cu alloy particles into CNFs may offer some a prospective instruction for the alloy anodes in the field of energy storage.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·Vol. 46
·期 43
·22508-22518
·
IF 5.816
Zhijun Zhang,Kezhen Chen,Jichang Lu,Qin Zou,Yuhui Zhao,Yongming Luo,Dedong He,Rongtao Li
Sn modified CuO–CeO 2 catalysts with different Sn loadings were prepared by a facile, green and solvent-free method. The effect of Sn/Ce ratio over Sn–Cu–Ce-x (x = 0, 1, 2.5, 5, 7.5) samples on CO activity and O 2 selectivity was investigated. The samples were characterized by various techniques using N 2 -adsorption/desorption, XRD , H 2 -TPR, XPS, Raman and in-situ DRIFTS . It was revealed that stronger interaction between acitve sites and support, higher amounts of Sn 2+ and Ce 3+ , associated with increased amount of oxygen vacancies , were observed on the catalyst of Sn–Cu–Ce-5. As a result, the optimized catalyst displayed an excellent catalytic performance even in the presence of CO 2 and H 2 O. In this sense, probing the Sn modified CuO–CeO 2 catalyst can elucidate some useful keys for the development of high CO 2 and H 2 O-resistance catalyst during CO-preferential oxidation in H 2 -rich streams.
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高影响因子
THIN SOLID FILMS
·
2017
·
IF 1.879
Furao Guo,Huafei Guo,Kezhi Zhang,Ningyi Yuan,Jianning Ding
SnS films with different Sn contents were fabricated by thermal co-evaporation. The variation in structures, optical and electrical properties of SnS with different Sn contents was systematically investigated. The prepared films were characterized by X-ray diffraction, field emission scanning electron microscopy , and energy dispersive spectroscopy analysis. An excess of Sn can result in a change of the SnS semiconducting film from p-type to n-type. The SnS films showed band gaps in the range of 1.25–1.57 eV and high mobilities of 7.29 cm 2 /V ∙ s, indicating suitability for application in photovoltaic cells . The photoelectric conversion efficiency (PCE) of the heterojunction solar cell was 1.26% with a open circuit voltage ( V OC ) of 0.153 V and a short circuit current density ( J SC ) of 29.61 mA/cm 2 .
研究领域:
材料科学
·
薄膜技术
·
光伏学
·
半导体物理
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高影响因子
危险品化学品经营许可证（带存储）