ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Jing Zhang,Caiyin You,Weihua Zhang,Jian Wang,Shaohua Guo,Rong Yang,Yunhua Xu
Improving the reaction kinetics of cathode and preventing the dissolution of polysulfides are two of the key strategies of developing the high-performance lithium-sulfur (Li-S) batteries. Herein, we propose a multi-porous conductive architecture through bridging conductive TiN nanoparticle over the surface of CNT-S composite. The as-prepared TiN@CNT-S composite cathode delivers the superior initial specific capacity of 1269 mAh g −1 at 0.05C and as high as 586 mAh g −1 at 2C. The reversible capacity of the TiN@CNT-S composite cathode is about two times higher than the bare cathode without TiN conductive bridging at 1C over 400 cycles. A high areal capacity of 4.0 mAh cm −2 was realized for the TiN@CNT-S composite cathode with a high areal sulfur loading of 5.4 mg cm −2 at a current rate of 0.5C over 50 cycles. The enhancements in the electrochemical performances are mainly ascribed to the TiN bridged highly conductive structure; the formation of the strong chemical interaction of S-N-Ti bond for polysulfides trapping provided by the chemically polar TiN, which is verified by the ultraviolet visible (UV) spectra and X-ray photoelectron spectroscopy (XPS) analyses.
研究领域:
电化学
·
能源材料
·
纳米材料
·
锂离子电池
·
电极工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Linlin Wang,Lu Liu,Xianlong Gong,Yi Jiao,Jun Zhang,Jianli Wang,Quan Zhu,Xiangyuan Li
The endothermic hydrocarbon fuel catalytic cracking as an active cooling technology for aircraft engines needs to provide a higher heat sink to absorb more heat and at the same time produce less carbon deposits to ensure the continuous operation of the aircraft. In this paper, Ni nanoparticles embedded into SiO 2 aerogel is achieved by two different method, col-gel (Ni-co) and after impregnation (Ni-after) and firstly introduced to achieve high heat adsorption capability and low coke generation in the fuel cracking process through ethanol-assisted and TiN coating technology . The Fourier transform infrared spectroscopy (FTIR) and contact angle test results show that aerogel catalysts are modified successfully with excellent hydrophobicity and lipophilicity which indicates that aerogel catalysts could be well dispersed in n -decane. According to the SEM and N 2 adsorption-desorption, Ni-after remains similar three-dimensional structure with SiO 2 aerogel and shows better pore structure which result in higher cracking activity (4.04 MJ/kg at 750 °C, 3.5 MPa) than Ni-co. Furthermore, the most efficient coke inhibition in supercritical catalytic cracking of n -decane is achieved by incorporating a little ethanol over TiN coating and high catalytic activity could be maintained within 50 min at 750 °C, 3.5 MPa and the coke generation is decreased by more than 90.0% (9.67–0.42 mg/cm 2 ·g) compared with Ni-after catalytic cracking.
研究领域:
化学工程
·
材料科学
·
航空工程
✓ 已验证
产品关联
DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Zeyu Miao,Jie Guo,Dan Jiang,Weijia Zheng,Wenxu Yin,Zhao Luo,Xinyan Zhou,Zhou Jiang,Wei Zhang,Xiuyun Zhang,Cong Chen,Xingliang Dai,Qingfeng Dong,Xuyong Yang,Ning Wang,Tom Wu,Xiaoyu Zhang,Jiaqi Zhang
Tin (Sn)-based perovskites have made notable advances with external quantum efficiency of over 20%, but still exhibit low electroluminescence brightness insufficient for outdoor displays. Here, it is demonstrated that compact phenethylammonium tin iodide (PEA 2 SnI 4 ) films with an intact crystal structure can offer high luminance by optimizing the perovskite crystallization rate simultaneously with engineering the grain surface. Ammonium thiocyanate is added to the precursor solution to generate the film with PEA 2 SnI x SCN 4- x and NH 4 I after spin-coating. Sn 2+ and SCN − have a strong interaction that slows crystallization to improve PEA 2 SnI 4 crystal quality. During the subsequent annealing, I − from NH 4 I replaces SCN − in PEA 2 SnI x SCN 4- x by forming thiourea, which can escape from the film to leave intact PEA 2 SnI 4 crystals. It is found that the optimized PEA 2 SnI 4 emitting layers can provide outstanding film coverage, high crystallinity, low trap state density, and superior photophysical performance. Consequently, an impressive brightness of 8285 cd m −2 for pure red electroluminescence is achieved, the first report of Sn-based perovskite light-emitting diodes that meet outdoor display requirements.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2025
·
IF 5.5
Xinxin Xia,Cheng Zhang,Wenyi Lai,Zhenglin Zou,Peigen Zhang,Jingwen Tang,Ying Guan,Shuang Tian,Balázs Illés,ZhengMing Sun
The spontaneous growth of metal whiskers has long posed reliability challenges in electronic devices, often resulting in short-circuit failures. Recent findings on the rapid and extensive formation of tin (Sn) whiskers on Ti₂SnC substrates underscore the critical role of atomized Sn in whisker growth. In this study, mechanochemically decomposed Ti₂SnC, capable of quantitatively and efficiently generating large amounts of atomized Sn, was implanted to Sn, Bi, and Pb metal matrices. After three days of being annealed at 60 °C, numerous whiskers grown on all implanted matrices, proving the critical role of atomized Sn in whisker growth. Notably, SnBi bimetallic and solid solution whiskers were detected. TEM analysis proved that the formation of SnBi whiskers was caused by the released latent heat of crystallizing atomized Sn, which creates SnBi micro-melt pools at the interface, facilitating interface flow and supplying the necessary constituents for SnBi bimetallic and solid solution whisker formation. Likewise, SnPb bimetallic whiskers were observed in Pb matrices implanted with the mechanochemical decomposed Ti 2 SnC. These findings provide two contrasting strategies for future applications: effectively suppressing whisker formation and intentionally synthesizing bimetallic nanowires.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 11
·期 3
·2202087
·
IF 10.05
Zhe Liu,Xiyu Jia,Weishuai Duan,Xinfa Zhu,Biao He,Chun Sun,Mengjun Wang,Erping Li,Chao Fan
Tin disulfide (SnS 2 ) is an emerging 2D-layered metal dichalcogenide with promising application potential for highly sensitive and fast-response-speed photodetectors. However, SnS 2 -based photodetectors still have drawbacks that limit their practical and commercial applications. Herein, an effective route is proposed for constructing SnS 2 /indium-doped SnS 2 homostructures to improve photodetector performance. Vertical SnS 2 /Sn 0.991 In 0.009 S 2 homostructures and photodetectors based on these homostructures were fabricated via a polydimethylsiloxane-assisted dry-transfer method. The photodetectors exhibit excellent performance, including a high photoresponsivity of up to 271.7 A W −1 , high normalized detectivity of up to 2.13 × 10 12 cm Hz 1/2 W −1 , and fast response time of ≈10 ms. The pseudo-built-in electrical field of the SnS 2 /Sn 0.991 In 0.009 S 2 homostructure results in the superior performance of the photodetectors based on this material compared to that based on individual SnS 2 and Sn 0.991 In 0.009 S 2 thin layers, most 2D materials, and commercial photodetectors (e.g., THORLABS FD11A Si, and FGA01 InGaAs). This study provides a facile and effective approach to enhance the performance of SnS 2 -based photodetectors and paves the way for future applications of photodetectors based on SnS 2 and other 2D materials.
研究领域:
材料科学
·
光电探测器技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Qilin Ding,Zhiwen Zhao,Zheng Zeng,Xianjun Chen,Pei Tang,Yi Sun,Zhongsheng Hua
One-step electrolysis realizes closed-loop recycling of spent stripping solution. • Cathodic reduction and hydrolysis enable the selective separation of Cu and Sn. • Cu recovery of 98.64% and Sn removal of 96.17% are achieved. • The treated spent solution can be directly reused for tin tripping in PCB process. The sustained growth of the printed circuit board (PCB) industry has made the disposal and resource reclamation of spent nitric acid-based tin stripping solution an increasingly urgent concern. Herein, a one-step electrolysis strategy based on the intrinsic differences between Cu 2+ and Sn 4+ in electrochemical reduction potentials and hydrolysis behaviors is proposed to enable their simultaneous and differentiated separation. The electrochemical behavior of Cu 2+ was systematically investigated in HNO 3 -Cu(NO 3 ) 2 system, revealing that its reduction is a diffusion-controlled irreversible process, with copper electrocrystallization following an instantaneous nucleation mechanism. Key kinetic parameters, including diffusion coefficient, charge-transfer resistance, and activation energy, were obtained. Furthermore, the effects of Fe 3+ and Sn 2+ on Cu 2+ reduction were examined, elucidating the promotion and competitive adsorption patterns of coexisting ions. Electrolysis of actual industrial spent tin stripping solution was then carried out. Under optimized conditions, Cu 2+ was reduced to copper metal at the cathode with a removal efficiency of 98.64%, while Sn 4+ was precipitated as SnO 2 · n H 2 O with a removal efficiency of 96.17%. The post-electrolysis solution can be directly reused in the PCB tin-stripping process. This study opens an alternative technological pathway for green, short-process closed-loop utilization of spent tin stripping solution and provides a theoretical reference for electrochemical recovery of complex acidic waste liquids.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Shengzhou Chen,Qiuchan Huang,Wei Yang,Hanbo Zou,Huangwang Mai,JiaHai Wang
Herein, new catalysts for the oxygen reduction reaction (ORR) (Pt CoN nanoparticles supported on TiN–carbon nanotubes (CNTs)) were successfully prepared via the simple polymerized complex method and heat treatment in NH 3 . Through this facile two-step synthesis, metal chlorides were first transformed to the corresponding oxides, then reduced to metal particles or nitrides . The synthesized Pt CoN/TiN–CNT electrocatalysts showed excellent electrochemical activity for oxygen reduction and high tolerance against methanol in acidic medium. The ORR onset potential of Pt 0.3 CoN/TiN–CNT (0.812 V vs. RHE) is higher than that of 40 wt% commercial Pt/C (0.789 V vs. RHE) due to the synergistic effect between nano-platinum particles and metal nitrides. The TiN-coated CNT support provided high electron transfer rate and catalytic tolerance in methanol solution. The number of transferred electrons was examined by rotating ring-disk electrode measurements, which concurred with the result of the Koutecky–Levich equation for a four-electron mechanism.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Metals
·
2024
·Vol. 14
·期 1
·87
·
IF 2.6
Yuantao Yang,Junli Wang,Xuanbing Wang,Jinlong Wei,Xiaoning Tong,Ruidong Xu,Linjing Yang
The electrolytic refining of crude tin is generally carried out in the fluorosilicic acid (H2SiF6) system with the assistance of bone glue and β-naphthol. However, the high saturated vapor pressure and low stability of H2SiF6present environmental concerns and do not align with sustainable development goals. In this paper, the electrochemical behavior of tin on a glassy carbon (GC) electrode was studied in a relatively green and environmentally friendly methanesulfonic acid (MSA) system. Bone glue, sodium lignosulfonate, and β-naphthol were used as additives to make the deposit morphology smooth and to ensure grain refinement. The electrochemical reduction process of Sn2+in an MSA system is a quasi-reversible process controlled by diffusion. The apparent activation energyEa= 14.189 kJ/mol for the ion diffusion of Sn2+was further calculated. The results of chronoamperometry showed that the electrocrystallization of Sn2+on the GC electrode gradually tended to three-dimensional instantaneous nucleation with the increase in applied potential. The morphology and phase of the deposits were analyzed using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results showed that the deposits were uniform and dense pure tin. This work elucidates the electrochemical behavior of tin in a methanesulfonic acid system.
研究领域:
电化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Hongtao Ge,Zhengxiang Gu,Peng Han,Hanchen Shen,Abdullah M. Al-Enizi,Lijuan Zhang,Gengfeng Zheng
The increasing accumulation of CO 2 in the atmosphere has been leading to serious environmental problems. Electrochemical reduction of CO 2 is a potential means of carbon recycling for energy storage and environmental sustainability. However, it is limited by the lack of highly active and selective electrocatalysts. Here we demonstrate the development of mesoporous tin oxide (SnO 2 ) for electrocatalytic CO 2 reduction, which facilitates the adsorption and electrochemical reduction of CO 2 inside mesopores. The highly-ordered and uniform pore sizes of the mesoporous SnO 2 electrocatalyst favor the enhancement of formation of carbon monoxide (CO) and formate during the electrochemical reduction. The combined faradaic efficiencies of CO and formate reach a peak value of ∼80% at a current density of 5 mA cm −2 at −0.8 V vs. reversible hydrogen electrode. This work suggests attractive development of mesoporous electrocatalysts with a variety of pore size and structures for efficient energy conversion and electrochemical CO 2 reduction.
研究领域:
材料科学
·
电化学
·
环境科学
·
能量转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 46
·期 5
·2259-2265
·
IF 3.591
Yanting Xu,Ke-Jian Jiang,Pengcheng Wang,Wei-Min Gu,Guang-Hui Yu,Xueqin Zhou,Yanlin Song
3D tin-based halide perovskites are promising light absorbers for perovskite solar cells (PSCs) due to their non-toxicity, suitable optical band gaps, and excellent optoelectronic properties. However, the inherent rapid crystallization and easy oxidation of Sn2+ to Sn4+ in 3D perovskites result in a low power conversion efficiency (PCE) and poor stability of tin perovskite solar cells compared with the lead counterparts. In this report, quasi-2D hybrid tin-based perovskite films are fabricated by using 2-thiopheneethylammonium (TEA+) as the spacer cation in MASnI3 (MA: CH3NH3+), leading to the formation of quasi-2D perovskite films with high orientation and a low content of Sn4+. As a result, the perovskite solar cells show a considerable power-conversion efficiency of 6.8%, which is among the highest values reported for MASnI3-based solar cells. Moreover, the devices exhibited excellent stability compared with the device without TEAI.
研究领域:
材料科学
·
能源技术
·
光伏器件
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2017
·
IF 3.582
Gen Liu,Zhanchang Pan,Bo Zhang,Jun Xiao,Guowei Xia,Qixiang Zhao,Shikun Shi,Guanghui Hu,Chumin Xiao,Zhigang Wei,Yanbin Xu
The application of direct methanol fuel cells (DMFCs) is hampered by not only low activity but also poor stability and poor CO tolerance by the Pt catalyst . Herein, a novel titanium nitride coated multi-walled carbon nanotubes (CNTs@TiN) hybrid support was successfully synthesized by a facile solvothermal process followed by a nitriding process , and this hybrid support was used as Pt support for the oxidation of methanol. The structure, morphology and composition of the synthesized CNTs@TiN exhibits a uniform particle perfect coating with high purity and interpenetrating network structure. Notably, Pt/CNTs@TiN also showed excellent stability, experiencing only a slight performance loss after 5000 potential cycles. The onset potential (0.34 V) of CO oxidation on Pt/CNTs@TiN is obviously more negative than that on the Pt/TiN (0.38 V) and Pt/CNTs (0.48 V) in the first forward scan. In the Pt 4f XPS spectra, plentiful Pt atoms existed as Pt(II) in the Pt/CNTs and Pt/TiN catalysts, while a relatively smaller amount of Pt(II) was observed in the Pt/CNTs@TiN catalyst. The synthetic Pt/CNTs@TiN catalyst was studied with respect to its electrocatalytic activity and durability and CO tolerance toward methanol oxidation might be mainly attributed to the strongly coupled Pt–TiN and the fast electron-transport network structure. This work may provide more insight into developing novel catalyst supports of various transition metal nitrides coated CNTs for DMFCs with high activity and good durability and excellent CO tolerance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Kai Jin,Yu-Tong Yang,Yu Xia,Xiao-Yu Rong,Xin Chen,Lei Huang,Chun-Hao Chen,Jing Chen,Kai-Li Wang,Zhao-Kui Wang
Tin halide perovskites (THPs) suffer from low stability due to the easy oxidation of Sn (II). Although traditional reduction strategies effectively inhibit the oxidation of Sn (II), the gradual depletion of reducing agents during continuous device operation significantly weakens their antioxidative capacity, thereby limiting the long-term stability of the device. Herein, a regenerative redox cycling strategy utilizing 4-mercaptobenzoic acid (4-MBA) is proposed. Under operational conditions, UV irradiation enables 4-MBA regeneration, which concurrently drives continuous Sn (IV)-to-Sn (II) reduction and facilitates dual-site defect passivation, significantly enhancing device efficiency and stability. Ultimately, an excellent efficiency of 15.15% is achieved and maintained 100% of the initial efficiency for 1100 h in a simulated day–night cycle maximum power point tracking (MPPT) test. This work provides a sustainable reduction strategy that effectively addresses the long-term stability issue of tin perovskite photovoltaic cells.
研究领域:
材料科学
·
光伏技术
·
纳米材料
·
能源化学
·
半导体物理
·
功能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）