ELECTROCHIMICA ACTA
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2019
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IF 5.383
Yihui Wu,Ying Gao,Hanwei He,Ping Zhang
Low-cost and highly efficient electrocatalysts are highly desirable to improve the efficiency of water splitting for oxygen evolution. In this work, a self-supported ternary Ni–Fe–Sn film on three dimensional nickel foam, which is prepared through a simple electrodeposition method, is investigated as oxygen evolution reaction (OER) electrocatalyst. The Ni–Fe–Sn film displays a considerably low overpotential of 253 mV at a current density of 10 mA cm −2 and a small Tafel slope of 61.5 mV dec −1 and excellent long-term stability for OER in 30% KOH aqueous solution. The good OER performance of Ni–Fe–Sn film may originate from its high electrochemical active surface area, rapid electron/proton and mass transfers, and the close combination between Ni–Fe–Sn film and nickel foam. This work provides a guideline to develop the low-cost and efficient earth-abundant OER anodes.
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Nano Energy
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2019
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IF 15.548
Ding-chuan Zuo,Sheng-chao Song,Chang-sheng An,Lin-bo Tang,Zhen-jiang He,Jun-chao Zheng
This study presents a nanostructured Sn/SnO x @Ti 3 C 2 composite by in-situ growth of Sn/SnO x nanoparticles on the interlayer of 2D MXene (Ti 3 C 2 T x ) nanosheets through facile electrostatic attraction and liquid phase reduction. X-ray diffraction, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy results illustrate that Sn/SnO x nanoparticles are uniformly distributed into the MXene (Ti 3 C 2 T x ) interlayer, forming a sandwich-like nanostructured composite. MXene (Ti 3 C 2 T x ) nanosheets suppress Sn/SnO x nanoparticles’ volume expansion and agglomeration and accelerate the Li-ion and electron transition due to the distinguished confinement effect and excellent graphite-like layered structure. Furthermore, Sn/SnO x nanoparticles are embedded as pillars to enhance the longitudinal structural stability of MXene matrix by preventing the re-stacking of nanosheets during lithium insertion/extraction. The nanosized particles still reduce lithium migration path and increase active areas. Therefore, the Sn/SnO x @Ti 3 C 2 composite maintains 594.2 mAh g −1 after 200 cycles with a capacity recovery after 100 cycles. The synergistic effect of Sn/SnO x on MXene facilitates Sn/SnO x @Ti 3 C 2 nanostructures , thereby exhibiting excellent electrochemical properties for lithium-ion batteries.
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CATALYSIS TODAY
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2018
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IF 4.667
Ganeshraja Ayyakannu Sundaram,Suresh Maniarsu,Reddy P. Vijendar,Ganapathy Veerappan,Vaithinathan Karthikeyan,Kiyoshi Nomura,Junhu Wang
Controlled silver chloride (0.01–0.50 mol%) and tin co-doped micro-spherical titania (AgCl@Sn-TiO 2 ) with enhanced visible range absorption is prepared through hydrothermal synthesis. Multi-element doped rutile TiO 2 nanocrystalline electron transporting layer (ETL) in perovskite solar cell (PSC) is reported for the first time, which uplifts the photovoltaic performance comparing with undoped TiO 2 electrodes. Theoretical DFT studies, investigating the change in electronic density of states with respect to the doping are performed. An optimum efficiency of 10.4% was achieved for 0.01% doped AgCl@Sn-TiO 2 , which provided highest efficiency with higher stability over 650 h comparing to undoped TiO 2 (10.0%) ETL based PSC prepared under the same ambient conditions. This report proves that, the AgCl@Sn-TiO 2 is one of the efficient materials having good potential for application in photoenergy conversion devices and may provide new insight into the design of advanced perovskite solar cells with titania based electron transport materials.
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ACS Applied Materials & Interfaces
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2018
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IF 8.097
Juan Jian,Long Yuan,Hui Qi,Xuejiao Sun,Le Zhang,He Li,Hongming Yuan,Shouhua Feng
Ni3S2 nanosheets doped with tin (Sn) grown on nickel foam (Sn–Ni3S2/NF) through a facile hydrothermal process were found to be superior water-splitting electrocatalysts. As for overall water splitting (OWS), when the current density is 10 mA cm–2, the required voltage is only 1.46 V. Meanwhile, it exhibits a large current density property and long-time stability (>60 h current–time tests) for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). In order to reach the current densities of 100 and 1000 mA cm–2, Sn–Ni3S2/NF needs overpotentials of 0.17 and 0.57 V for HER, and 0.27 and 0.58 V for OER, respectively. The water-splitting property of Sn–Ni3S2/NF is much better than that of pure Ni3S2/NF or even 20 wt % Pt/C/NF and RuO2/NF. Furthermore, Sn–Ni3S2/NF showed a higher turnover frequency at different potentials, with ∼100% Faraday efficiency for both O2 and H2. The improved activity of Sn–Ni3S2/NF activity for water-splitting is attributed to the doping of Sn, which enhanced the intrinsic activity of Sn–Ni3S2/NF for OWS. This article not only provides a new efficient and stable catalyst for OWS, but also proposes an interface design principle for NF-based high-performance water-splitting materials.
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ACS Applied Materials & Interfaces
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2013
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IF 5.008
Mingxi Chen,Congcong Zhang,Lingzhi Li,Yu Liu,Xichuan Li,Xiaoyang Xu,Fengling Xia,Wei Wang,Jianping Gao
A facile approach to prepare SnO2/rGO (reduced graphene oxide) hybrid nanoparticles by a direct redox reaction between graphene oxide (GO) and tin powder was developed. Since no acid was used, it is an environmentally friendly green method. The SnO2/rGO hybrid nanoparticles were characterized by ultraviolet–visible spectroscopy, Raman spectroscopy, thermogravimetric analysis, X-ray diffraction analysis, and X-ray photoelectron spectroscopy. The microstructure of the SnO2/rGO was observed with scanning electron microscopy and transmission electron microscopy. The tin powder efficiently reduced GO to rGO, and the Sn was transformed to SnO2 nanoparticles (∼45 nm) that were evenly distributed on the rGO sheets. The SnO2/rGO hybrid nanoparticles were then coated on an interdigital electrode to fabricate a humidity sensor, which have an especially good linear impedance response from 11% to 85% relative humidity.
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ELECTROCHIMICA ACTA
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2016
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IF 4.803
Zhen Shen,Yi Hu,Renzhong Chen,Xia He,Yanli Chen,Hanfeng Shao,Xiangwu Zhang,Keshi Wu
To develop next-generation lithium-ion batteries (LIBs) with novel designs, reconsidering traditional materials with enhanced cycle stability and excellent rate performance is crucial. We herein report the successful preparation of three-dimensional (3D) composites in which spilt Sn–Cu alloys are uniformly dispersed in an amorphous carbon nanofiber matrix (Sn–Cu–CNFs) via one-step carbonization-alloying reactions. The spilt Sn–Cu alloys consist of active Cu 6 Sn 5 and inactive Cu 3 Sn, and are controllable by optimization of the carbonization-alloying reaction temperature. The 3D carbon nanofiber framework allowed the Sn–Cu–CNFs to be used directly as anodes in lithium-ion batteries without the requirement for polymer binders or electrical conductors. These composite electrodes exhibited a stable cyclability with a discharge capacity of 400 mA h g −1 at a high current density of 1.0 A g −1 after 1200 cycles, as well as an excellent rate capability, which could be attributed to the improved electrochemical properties of the Sn–Cu–CNFs provided by the buffering effect of Cu 3 Sn and the 3D carbon nanofiber framework. This one-step synthesis is expected to be widely applicable in the targeted structural design of traditional tin-based anode materials.
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Small
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2024
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IF 13
Siyi Hong,Leiming Wu,Zizhen Xiao,Yinxiang Chen,Artem Kuklin,Huating Liu,Hans Ågren,Xiaohui Ren,Ye Zhang
Few-layer tin (Sn)-based nanosheets (NSs) with a thickness of ≈2.5 nm are successfully prepared using a modified liquid phase exfoliation (LPE) method. Here the first exploration of photo-electrochemical (PEC) and nonlinear properties of Sn NSs is presented. The results demonstrate that the PEC properties are tunable under different experimental conditions. Additionally, Sn NSs are shown to exhibit a unique self-powered PEC performance, maintaining a good long-term stability for up to 1 month. Using electron spin resonance, active species, such as hydroxyl radicals (·OH), superoxide radicals (·O 2 − ), and holes (h + ), are detected during operations, providing a deeper understanding of the working mechanism. Furthermore, measurements of nonlinear response reveal that Sn NSs can be effective for all-optical modulation, as it enables the realization of all-optical switching through excitation spatial cross-phase modulation (SXPM). These findings present new research insights and potential applications of Sn NSs in optoelectronics.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Bixia Wang,Jiayi Hao,Hui Xu,Minxi Sun,Chun Wu,Wei Qin,Xingqiao Wu,Qiliang Wei
Currently, inhomogeneous distribution of Zn2+ on the surface of the Zn anode is still the essential reason for dendrite formation and unsatisfactory stability of zinc ion batteries. Given the merits of strong interaction between Sn and Zn, as well as a low nucleation barrier during Zn deposition, the combination of metallic Sn with carbon material is expected to improve the deposition of zinc ions and inhibit the growth of zinc dendrites by guiding the homogeneous plating/stripping of zinc on the electrode surface. In this article, zincophilic Sn nanoparticles with low nucleation barriers and strong interaction with Zn2+ were embedded into 3D N-doped carbon nanofibers using a simple electrostatic spinning technique. Accordingly, when serving as an artificial coating layer for the zinc metal anode, an ultrastable Sn@NCNFs@Zn||Sn@NCNFs@Zn symmetric cell can be achieved for over 3500 h with a low nucleation overpotential of 29.1 mV. Significantly, the full cell device assembled with the as-prepared anode and MnO2 cathode exhibits desirable electrochemical behaviors. Moreover, this simple method could be extended to other metal–carbon composites, and to ensure ease in scaling up as required. Such significant approach can provide an effective strategy for the design of high-performance zinc anodes.
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Chemical Science
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2024
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IF 7.6
Wei-Xing Chen,Zi-Sheng Li,Harry W. T. Morgan,Cong-Cong Shu,Zhong-Ming Sun,John E. McGrady
We report here the synthesis and characterization of two endohedral Zintl-ion clusters, [Fe4Sn18]4− and [Fe4Pb18]4−, which contain rhombic Fe4 cores. The Fe–Fe bond lengths are all below 2.5 Å, distinctly shorter than in the corresponding Cu clusters, indicating the presence of Fe–Fe bonding. Subtle differences in the structure of the Fe4 core between the two clusters suggest that the change in tetrel element causes a change in electronic ground state, with a very short Fe–Fe bond length of 2.328 Å present across the diagonal of the rhombus in the lead case.
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APPLIED ORGANOMETALLIC CHEMISTRY
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2024
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IF 3.7
Qiuyun Zhang,Ting Li,Zhenying Li,Yanhui Lei,Xingyue Hong,Mei Deng,Jingsong Cheng,Zhengjun Liu,Yutao Zhang
Metal–organic frameworks (MOFs) are ideal supports for the synthesis of porous composite catalysts. In the present study, Sn-Bi bimetallic metal–organic frameworks (Sn-Bi-MOFs) supported silver-doped phosphotungstic acid (AgPW) catalysts (AgPW@Sn-Bi-BDC and AgPW@Sn-Bi-BDC (NH 2 )) were successfully synthesized via a simple in situ impregnation method, which was subsequently applied to catalyze esterification for the production of biodiesel from oleic acid (OA). The physico-chemical properties of the prepared composite catalysts underwent comprehensive analysis through XRD, FTIR, N 2 physisorption, SEM, EDX, NH 3 -TPD, Py-FTIR, TG, and XPS techniques, confirming the successful impregnation of AgPW on the Sn-Bi-MOFs framework. Among the catalysts tested, AgPW@Sn-Bi-BDC (NH 2 ) exhibited the better catalytic activity than that of Sn-Bi-BDC, Sn-Bi-BDC (NH 2 ), and AgPW@Sn-Bi-BDC, reaching 91.6% of OA conversion with the methanol:OA molar ratio of 20:1 and the catalyst quantity of 0.2 g at 130°C for 4 h. The high activity of AgPW@Sn-Bi-BDC (NH 2 ) is attributed to the available multiscale pore structure, high acidity, and the synergistic action of the Brønsted and Lewis acidic sites. Additionally, the esterification with AgPW@Sn-Bi-BDC (NH 2 ) followed the first-order reaction kinetic model, with an E a of 34.5 kJ/mol. Moreover, the recyclability of the composites was also assessed, demonstrating sustained catalytic activity after four reuses. This approach showed a potential for sustainable and efficient energy production through bimetallic MOFs-based composite catalysts.
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Materials Today Communications
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2024
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IF 3.7
Pu Zhao,Zhengwei Li,Zhiwu Xu,Xuesong Liu,Jiuchun Yan
How to obtain a high-strength and corrosion resistance of Al/Sn/Al joint has been a longstanding goal for electronics industry. In this work, 6063Al was joined in the air by ultrasonic-assisted liquid phase diffusion bonding using a Sn filler metal . It was performed by applying an uninterrupted ultrasonic vibration at a heating temperature of 360 ℃, final obtaining a 6063Al joint without enriched-Sn. Under the action of ultrasonic vibrating, the breaking of oxide film , the diffusing of Sn, and dissolving of Al alloy occurred in sequence. It resulted in a transition of bonding interface from Sn/Al to an α-Al/α-Al bonding interface embedded a few Mg 2 Sn partials, after depleting Sn by grain boundary diffusion . The joints possessed a high strength coefficient of 86.7% of 6063Al base metal and 161.8% of soldering joint. The joint had a better corrosion resistance that the tensile strength only reduced 35.3% after a corroding of 72 h in 3.5 wt% NaCl solution in comparison with the soldering joints. Finally, the evolution of the interface structure and mechanism of improving corrosion resistance were discussed in detail. It is a promising technology for manufacturing high-reliable Al/Sn heterogeneous joints.
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Molecular Catalysis
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2024
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IF 3.9
Xiaohao Liu,Zibin Xia,Rui Diao,Fenglei Qi,Ying Zhang,Peiyong Ma
The production of high value-added chemicals and materials from renewable biomass is significant for the sustainable development of chemical industry. Herein, rice husk-based biogenic silica-anchored Sn-Co catalysts with adjustable activity are successfully prepared for biomass valorization. By regulating the pretreatment method and carbothermal reduction temperature of catalysts, the interaction between Co, Sn and biogenic silica can be regulated, thereby regulating the catalytic activity of the catalyst for cellulose hydrogenolysis. 50.7 % yield of acetol and 63.4 % yield of C3 products can be obtained. A series of characterizations show that the hydrothermal pretreatment in CoCl 2 solution promotes the combination of Co 2+ and biogenic silica, which inhibits the excessive doping of Sn 4+ and promotes the formation of Co 3 Sn 2 alloy. The Sn-O-Si and Co 3 Sn 2 species in 3Sn-5Co@RHC are the key active sites catalyzing glucose isomerization and fructose retro-aldol condensation. The intermediates experiments show that controlling the hydrolysis rate of cellulose to avoid excessive concentration of monosaccharide intermediates in the reaction system is crucial for inhibiting side reactions and improving the yield of acetol. The use of agroforestry waste-based catalytic materials for biomass conversion in this work can provide inspiration for exploiting the intrinsic characteristics of biomass to develop high value-added materials and chemicals.
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