JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Linfeng Chen,Hongyang Li,Pengsen Qian,Yuqi Wang,Jianjun Zhang,Gaoran Li
Tin oxide, characterized by its exceptional theoretical capacity, emerges as a highly promising alternative anode in the pursuit of high-energy-density lithium-ion batteries (LIBs). However, inherent limitations in conductivity and structural integrity impede the fulfillment of its energy storage potential. Herein, sophisticated SnO 2 -carbon nanorods (SnO 2 /C NRs) derived from a tin-based metal-organic framework are developed for superior lithium storage. The ultrafine SnO 2 nanocrystals are embedded within a hollow and porous rod-like architecture, ensuring fast multidirectional charge transfer and well-accommodated volume variation during the lithiation/delithiation process. Moreover, the integration of the carbon matrix further promotes electron conduction and reinforces the structural integrity towards fast, efficient, and durable electrochemistry. As a result, the SnO 2 /C NRs electrodes demonstrate excellent long-term cyclability with a minimal capacity fading rate of 0.089 % per cycle over 500 cycles, and a commendable rate capability with a highly reversible capacity of 922.1 mAh g −1 at 3 C. This work establishes a unique and insightful paradigm for designing advanced electrode materials towards energy-dense next-generation LIBs.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Mingchen Xu,Xinfa Zhu,Gaoning Fan,Xiyu Jia,Yonghui Zhang,Mengjun Wang,Hongxing Zheng,Pengyu Zhou,Chao Fan
Visible photodetectors based on two-dimensional tin disulfide (SnS2) have attracted interest for applications in optical communication, information capture, and military reconnaissance owing to their high absorption efficiency, atomic-scale thickness, and nontoxicity. However, their intrinsic bandgap limits their spectral detection range, hindering further practical applications. Herein, we introduce VIII B-nickel (Ni) with a similar ionic radius to Sn to form Ni-doped SnS2 few-layers via micromechanical exfoliation. As the Ni-doping concentration increases, the bandgap decreases from 2.14 (SnS2) to 1.95 eV (Sn0.9Ni0.1S2). Subsequently, Ni-doped SnS2-based photodetectors are fabricated and characterized. These devices exhibit an extended spectral detection range and excellent performance, with a maximum responsivity of 2009 A W–1 and high normalized detectivity of 2.47 × 1012 cm Hz1/2 W–1. Furthermore, to suppress dark current and noise, SnS2/Ni-doped SnS2 homostructures and their corresponding photodetectors are fabricated. The built-in electrical field of the homostructure effectively reduces the dark current of the homostructure photodetector to 110 nA. Consequently, the responsivity is enhanced to 3350 A W–1 and the response time is reduced to 3.5 ms, outperforming most other 2D material–based and commercial photodetectors. And Ni-SnS2 VPDs show an application potential in imaging and visible-light communication systems. Thus, this study presents an effective approach to extend the detection spectrum of SnS2-based photodetectors and pave the way for their future applications.
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IEEE ELECTRON DEVICE LETTERS
·
2024
·Vol. 45
·期 3
·396-399
·
IF 4.1
Yilun Zhong,Jiwei Zou,Taoming Guo,Lei Han,Ye Zou,Wei Tang,Yongpan Liu,Huazhong Yang,Yunlong Guo,Chen Jiang
Transparent organic thin-film transistors (OTFTs) are promising for bioelectronics applications, by allowing simultaneous optical imaging with electrical sensing and modulation. However, the state-of-the-art transparent OTFTs have limited device performance, in terms of low mobility and high threshold voltage. This is mainly attributed to the large contact resistance induced by the energy level mismatch between the transparent electrodes and organic semiconductors. He re, we report transparent OTFTs with indium tin oxide electrodes modified by fluorinated silanes to improve device performance. It is found that the OTFTs with electrode modified by fluorinated silanes exhibit increased mobility from 0.12 cm2/ $\text{V}\cdot \text{s}$ to 1.58 cm2/ $\text{V}\cdot \text{s}$ and lower threshold voltage from–12.45 V to–2.21 V. The contact resistance of the OTFT characterized by a transmission line method, shows a reduction from over 1 $\text{M}\Omega $ to below 100 $\text{k}\Omega $ .
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SURFACE REVIEW AND LETTERS
·
2018
·
IF 0.734
GAO PINGPING,OUYANG CHUN,XIE ZHIYONG,TAO TAO
The Ni-P/TiN coating was used as bipolar plate by electroless plating on Ti. Surface morphology and phase structure of the coatings were characterized by SEM and XRD, respectively. Corrosion resistance of Ni-P and Ni-P/TiN coating was measured in the simulated solution of Proton exchange membrane fuel cells (PEMFCs). The interfacial contact resistance (ICR) was conducted by applied different forces. SEM images indicated that the particles of core–shell structure were formed on the surface of coating on Ti substrate. The core–shell structure was composed of TiN core and Ni-P electroless plating shell. Compared with Ni-P coatings, the Ni-P/TiN coating showed better corrosion resistance behaviors and low ICR (below 10 m Ω cm − 2 under pressure of 200 N/cm 2 ) . TiN particles and distribution of core–shell were in favor of the formation of coating and compact surface morphology. The good conductivity was attributed to the compact surface morphology of coating. The Ni-P/TiN coating showed excellent interfacial conductivity and good corrosion resistance at applied high potential in simulated solution of PEMFCs.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Jiaqi Zhang,Jianan Wang,Qishen Zhou,He Zhu,Yongyan Pan,Chenyang Shi,Sanwan Liu,Zheng Zhou,Huande Sun,Yong Cai,Rui Chen,Fumeng Ren,Zhengjing Zhao,Zihe Cai,Xiaojun Qin,Zhiguo Zhao,Zhichun Yang,Zonghao Liu,Wei Chen
All-perovskite tandem solar cells (TSCs) hold a great promise to break the Shockley-Queisser (S-Q) efficiency limit of single-junction solar cells. However, the inferior performance of the tin-lead (Sn–Pb) mixed perovskites based narrow-bandgap bottom subcells largely limits the development of all-perovskite TSCs due to the serious defects assisted non-radiative charge recombination loss, especially at the perovskite/electron charge transport layer (ETL) interface. Herein, a dual-source defect managing strategy is demonstrated to modify the top surface of Sn–Pb mixed perovskites. Specifically, ethylenediammonium diiodide (EDAI 2 ) and (3-mercaptopropyl) trimethoxysilane (MPTS) are simultaneously introduced to passivate the organic cations and metal cations related defects, respectively. The strong interactions between the passivators and Sn–Pb perovskite result in effectively reduced non-radiative carrier recombination, obviously suppressed Sn 2+ oxidation and accelerated carrier transportation at the perovskite/ETL interface. Ultimately, a champion efficiency of 22.7% for single-junction Sn–Pb solar cells and an impressive efficiency of 28.26% for the all-perovskite TSCs are achieved based on the dual-source defect managing strategy.
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Nanomaterials
·
2024
·Vol. 14
·期 5
·437
·
IF 4.4
Yanjun Xing,Zhiqiang Deng,Qiuxiang Wang,Jiaxing Xiong,Xiaohui Liu,Like Huang,Yuejin Zhu,Jing Zhang
The poor film stability of Sn-Pb mixed perovskite film and the mismatched interface energy levels pose significant challenges in enhancing the efficiency of tin–lead (Sn-Pb) mixed perovskite solar cells. In this study, polyvinylpyrrolidone (PVP) is introduced into the PVK perovskite precursor solution, effectively enhancing the overall stability of the film. This improvement is achieved through the formation of robust coordination bonds between the carbonyl (C=O) in the pyrrole ring and the undercoordinated SnIIand PbII, thereby facilitating the passivation of defects. Furthermore, the introduction of PVP inhibits the oxidation of tin (Sn), thereby enhancing the n-type characteristics of the perovskite film. This adjustment in the energy level of the PVK perovskite film proves instrumental in reducing interface energy loss, subsequently improving interface charge transfer and mitigating device recombination. Consequently, perovskite solar cells incorporating PVP achieve an outstanding champion power conversion efficiency (PCE) of 21.31%.
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IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 14
·21792-21799
·
IF 4.3
Zhenheng Zhang,Shengyi Yang,Zhenhua Ge,Haiyuan Xin,Ying Wang,Yurong Jiang,Bingsuo Zou
Self-driven photodetectors based on flexible silicon nanowire (Si-NW) array have attracted widespread research interests since they can continuously operate without external bias. However, their practical performances are limited due to the high density of intrinsic defects introduced by the chemical etching procedure for the Si-NWs. To address this issue, first ultrathin silicon wafers are etched with a metal-assisted chemical etching method, then flexible Si-NWs are obtained, and finally, a high-performance self-driven photodetector Si/[Si-NWs/FASnBr3]/MoO3/Au, in which Si-NWs are surface passivated with FASnBr3 nanocrystals, is presented. As a result, the responsivity and specific detectivity of the self-driven photodetector reach 0.694 A/W and $2.9\times 10^{{13}}$ Jones, respectively, under $0.8~\mu $ W/cm $^{{2}}~980$ nm illumination at zero bias, with a rising time of 58.552 ms and a falling time of 43.729 ms. The enhanced device performance is mainly due to the improved surface passivating effect on the silicon nanowire surfaces by FASnBr3 nanocrystals. Thus, it provides an efficient method to passivate the surfaces of silicon nanowires, and it is a promising method to enhance the performances of self-driven Si-NW-based photodetectors.
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Journal of Physical Chemistry C
·
2024
·
IF 3.3
Han Liu,Zhiyuan Li,Xiaofeng Zhang,Hao Chen,Shijun Xu,Yi Fan,Qing Yuan,Yi Sun,Xiangshan Hou,Yi He
In this paper, a pulse electrodeposition technique is employed to introduce superhard nanoscale titanium nitride (TiN) particles into the Ni–W–P coating. Moreover, the work extensively examined the impact of varying TiN nanoparticle concentrations on the Ni–W–P coating’s performance. The findings reveal that the introduction of TiN effectively fills the crevices and other imperfections present on the pristine plating layer’s surface, improving the aggregation of grains. The incorporation of TiN nanoparticles, owing to their “labyrinthine effect” and grain refinement capability, notably enhanced the mechanical performance and corrosion resistance of the pure coating. Optimal results are achieved, showcasing superior mechanical attributes and corrosion defense, when the TiN concentration in the bath reaches 4 g/L. Vickers microhardness testing unveils that the Ni–W–P/TiN composite coating, at a TiN loading of 4 g/L, observes its microhardness escalating from 496.6 HV for the pure Ni–W–P coating to 847.6 HV. In a reciprocating friction assessment, the mean friction coefficient diminishes, plummeting from 0.663 for Ni–W–P to 0.325. Regarding corrosion tolerance, the Ni–W–P/TiN (4 g/L) composite coating demonstrates the greatest capacitive arc radius, alongside a corrosion current density diminishing from 26.0 μA/cm2 (Ni–W–P coating) to 11.93 μA/cm2 compared to the unaugmented Ni–W–P coating. Additionally, the self-corrosion potential shifts positively, going upward from −0.536 V for the Ni–W–P coating to −0.323 V. It is further established that the Ni–W–P/TiN composite at 4 g/L surpasses the Ni–W–P coating in corrosion resistance capabilities.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhang Hua,Chang Wu,Xi Luo,Shu-Jin Long,Zheng-Yi Wang,Xian-Wei Cheng,Jin-Ping Guan
The facile development of a sustainable and durable flame-retardant approach for protein silk is of interest. Inspired by silk tin-weighting technology, this study developed a novel and sustainable in-situ deposition strategy based on biomass phytic acid to impart durable flame-retardant performance to silk fabrics. The chemical structure of insoluble chelating precipitation, and the surface morphology, thermal stability, combustion behavior, flame-retardant capacity, laundering resistance, and flame-retardant mode of action of the tin-weighting silk samples, were explored. The Sn-, P-, Si-containing insoluble chelating precipitation formed within the fiber interior and combined with silk fibers through electrostatic attraction and metal salt chelation. As a result, the tin-weighting silk displayed excellent self-extinguishing capacity, with the damaged length reduced to 9.2 cm and the LOI increased to 31.6 %; it also achieved self-extinguishing after 30 washing cycles, demonstrating high flame-retardant efficacy and laundering resistance. Moreover, the tin-weighting silk also showed the obvious suppression in smoke and heat generation by 55.6 % and 35.7 %, respectively. The synergistic charring action of phosphate groups, tin metal salts, and silicates was beneficial for enhancing the fire safety of silk. The tin-weighting treatment also displayed a minor impact on mechanical performance of silk fabrics.
研究领域:
材料科学
·
纺织工程
·
可持续发展
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COMPOSITES PART B-ENGINEERING
·
2021
·
IF 9.078
Jinzhe Li,Zhengkang Xu,Tian Li,Dandan Zhi,Yao Chen,Quanhong Lu,Jingjing Wang,Qian Liu,Fanbin Meng
The rapid development of high performance detection technology promotes the innovation of stealth technology moving towards the direction of multi-band compatibility, but suffers great challenges. Especially for the widely used radar detection and infrared detection, how to overcome the contradiction between their corresponding stealth materials and develop high-performance stealth materials with microwave-infrared compatible property is extremely urgent. Herein, flexible cellular reduced graphene oxide aerogels modulated by antimony tin oxide (ATO/rGO) have been synthesized by self-assembly, which demonstrate excellent microwave-infrared stealth compatibility. Remarkably, the aerogel exhibits dual-absorption in microwave stealth caused by strong interface polarization, achieving the maximum reflection loss (RL) of −40.92 dB at 11.36 GHz coupled with another absorption peak of −19.82 dB at 16.64 GHz and a broadest effective absorption bandwidth of 9.8 GHz covering the X band and Ku band, which can be verified by electromagnetic finite element method simulation. Moreover, trace amount of loss components ATO in conductive network structure guarantee the low infrared emissivity (0.383) and thermal insulation synchronously, which is the key to compatibility with infrared stealth. The light ATO/rGO aerogels demonstrate the great prospect for anti-detection and security protection, providing a novel approach for multispectral compatible stealth.
研究领域:
材料科学
·
电磁学
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NANOTECHNOLOGY
·
2021
·Vol. 33
·期 2
·025201
·
IF 3.874
Risheng Jin,Keli Shi,Beibei Qiu,Shihua Huang
Recently, antimony-doped tin oxide nanoparticles (ATO NPs) have been widely used in the fields of electronics, photonics, photovoltaics, sensing, and other fields because of their good conductivity, easy synthesis, excellent chemical stability, high mechanical strength, good dispersion and low cost. Herein, for the first time, a novel nonvolatile transistor memory device is fabricated using ATO NPs as charge trapping sites to enhance the memory performance. The resulting organic nano-floating gate memory (NFGM) device exhibits outstanding memory properties, including tremendous memory window (∼85 V), superhigh memory on/off ratio (∼109), long data retention (over 10 years) and eminent multilevel storage behavior, which are among the optimal performances in NFGM devices based on organic field effect transistors. Additionally, the device displays photoinduced-reset characteristic with low energy consumption erasing operation. This study provides novel avenues for the manufacture of simple and low-cost data storage devices with outstanding memory performance, multilevel storage behavior and suitability as platforms for integrated circuits.
研究领域:
电子材料
·
纳米技术
·
存储器件
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ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Jiajun Wei,Zhigang Yin,Shan-Ci Chen,Qingdong Zheng
In this study, Sn-doped ZnO (ZTO) is prepared by a sol–gel method and is employed as an electron transport material for organic solar cells (OSCs). After Sn modification, the fabricated ZTO films exhibited better charge transport properties and smoother surface morphology, especially for those processed at a low temperature of 120 °C. By incorporation of the high-temperature (200 °C) processed ZTO films, inverted OSCs showed the highest power conversion efficiency (PCE) of 9.32%, which is higher than those based on the same temperature processed ZnO films. For the devices based on the low-temperature processed ZTO, a high PCE over 9.0% with long-term stability was achieved, which is much better than those based on the same temperature processed ZnO (8.46% PCE). Here, the ZTO films can be fabricated without high-temperature annealing, demonstrating their great potential as electron transport layers for efficient flexible OSCs.
研究领域:
材料科学
·
能源技术
·
光电转换
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高影响因子
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