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Toward High Capacity and Stable SnO_(2)Hollow Nanosphere Electrode Materials:A Case Study of Ni-substituted Modification

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Research and Application of Materials Science 2021年第2期3卷 1-7,I0004页

作者： Yannan ZHANG Peng DONG Yingjie ZHANG Hong GUO National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Yunnan Provincial Laboratory for Advanced Materials and Batteries ApplicationFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanPR China School of Materials and Energy Yunnan Key Laboratory for Micro/Nano Materials and TechnologyYunnan UniversityKunming 650091China

To develop the urgent requirement for high-rate electrodes in next-generation lithium-ion batteries,SnO_(2)-based negative materials have been spotlighted as potential ***,the intrinsic problems,such as conspicuous volume variation and unremarkable conductivity,make the rate capability behave badly at a high-current ***,to solve these issues,this work demonstrate a new and facile strategy for synergistically enhancing their cyclic stability by combining the advantages of Ni doping and the fabrication of hollow ***,the incorporation of Ni^(2+)ions into the tetragonal rutile-type SnO_(2)shellsimproves the charge transfer kinetics effectively,leading to an excellent cycling *** addition,the growth of surface grains on the hollow nanospheres are restrained after Ni doping,which also reduces theunexpected polarization of negative *** a result,the as-prepared Ni doped electrode delivers a remarkable reversible capacity of 712 mAh g^(-1)at 0.1 A g^(-1)and exhibits outstanding capacity of 340 mAh g^(-1)at 1.6 A g^(-1),about 2.58 times higher than that of the pure SnO_(2)hollow sample.

关键词： tin oxide Negative materials Nickel doping Hollow nanospheres Lithium ion batteries

Influence of reflow processing conditions on the uniformity of the chromium passivation film on tinplate

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Baosteel Technical Research 2014年第2期8卷 41-45页

作者： XIE Long CHEN Hongxing XIE Yingxiu Research Institute Baoshan Iron & Steel Co.Ltd

This study aims to systematically analyze the key parameters of the reflow process that influence the uniformity of the chromium passivation film coated on tinplate. The distribution characteristics of the chromium passivation film coated on the tinplate surface under different treatment conditions were systematically characterized using the scanning Kelvin probe technique, X-ray photoelectron spectroscopy, and X-ray diffraction. Results indicate that the use of flux reduces the porosity of tin coating, thereby favoring the uniform growth of the passivation film. Furthermore, an increase in the reflow power and quenching temperature facilitates the homogeneous distribution of the passivation film on the tinplate surface,particularly when treated with electrolytic cathodic sodium dichromate.

关键词： chromium passivation film tinplate uniformity tin oxide

Preparation and Gas Sensitive Properties of Nanometer-Sized SnO2

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Advances in Manufacturing 1998年第1期 75-79页

作者： Pan Qingyi Dong Xiaowen Xu Jiaqiang * Zhang Jianping Shi Liyi (School of Chemicstry and Chemical Engineering, Shanghai University) ( *Zhengzhou Institute of Light Industry)

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关键词： sol gel nanometer sized tin oxide gas sensitive property

Strong Synergistic Coupling of Four-Components-Blended Interface for Efficient Electron Transfer and Stable Mesoscopic Perovskite Solar Cells:The Key Role of SnO2

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Strong Synergistic Coupling of Four-Components-Blended Inter...

第四届新型太阳能电池学术研讨会

作者： Yantao Shi Qingshun Dong Yanping Lv Chunyang Zhang Shi Wang Yulin Feng Caiyun Xue Yingying Shao State Key laboratory of Fine Chemicals School of Chemistry Dalian University of Technology

Contrary to the traditional double-layer structured electron transfer layer(ETL) applied in mesoscopic perovskite solar cells(M-PSCs), we propose a more rational design of ETL architecture which does not contain a compact TiO underlayer but is based on an interface with strongly coupled four components of FTO, SnO, TiO, and *** structure has proved to be more kinetically advantageous for transferring photo-induced *** key to the construction of the proposed ETL is the partial pre-attachment of a spot of SnO nanocrystallites(NCs) on FTO prior to the preparation of the mesoporous TiO ***, an interface involving the four components is formed, along with the deposition of *** interfacial electron transfer dynamics of M-PSCs with three different ETL structures is studied in *** M-PSCs with the new ETL, a very strong synergistic interfacial electronic coupling between perovskite and FTO charge transfer is observed and clarified using electrochemical impedance spectra(EIS).In the new ETL, SnO is a key component and is found to be essential to lower series resistance(R) and enhance shunt resistance(R), which can sufficiently offset the deteriorated dark current as a result of the direct contact between perovskite and *** with the new strategy of solvent engineering we developed in the present study for the sequential deposition of high-quality perovskite of CHNHPbI, the M-PSCs with new ETL exhibit lower hysteresis effect and high PCE of 18.16%.These M-PSCs also display a steady-state PCE output of 17.14%, which is much superior to that of M-PSCs with traditional double-layer *** addition, the stability of M-PSCs with the new ETL can be significantly improved, because of the absence of the compact TiO layer which leads to photo-induced interfacial *** study confirms the feasibility and rational of replacing the conventional double-layer ETL in M-PSCs with a new structure that is more advantage

关键词： mesoscopic perovskite solar cells blended interface electron transfer tin oxide

Efficient, stable and flexible perovskite solar cells using two-step solution processed SnO2 layers as electron-transport-material

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Efficient, stable and flexible perovskite solar cells using ...

第五届新型太阳能电池学术研讨会

作者： Xincan Qiu Bingchu Yang Hui Chen Gang Liu Yuquan Liu Yongbo Yuan Han Huang Haipeng Xie Dongmei Niu Yongli Gao 周聪华 Hunan Key Laboratory of Super-microstructure and Ultrafast Process School of Physics and Electronics Central South University Department of Physics and Astronomy University of Rochester

Flexible perovskite solar cells were prepared using two-step solution-processed SnO layers as electron-transport material. The first layer was constructed by hydrothermal derived SnO nanoparticles, and the second layer was in-situ formed from hydrolysis and oxidization of SnCl. It was observed that the two-step formed SnO layers could efficiently improve the device performance of the flexible perovskite solar cells. Without such layers, no photovoltaic effect was observed due to poor wettability of substrate. After SnO was deposited, power conversion begins due to improved crystallinity of perovskite layer. Compared with one-step processed SnO layer, the two-step processed SnO layers could take the advantages of accelerated charge extraction, lowered contact resistance, as well as reduced charge recombination, which help to upgrade open circuit voltage, short circuit current, fill factor and power conversion efficiency of the flexible devices. Device efficiency of 15.21%(AM 1.5 G, 100 mW/cm) was obtained for the flexible devices, with prolonged shelf-stability in addition. After being stored in dark for 111 days(relative humidity of 35-55%, no encapsulation was used), device could keep 85% of starting efficiency. Meanwhile, specific power(ratio between power and device weight) of 0.87 kW/kg was obtained, as well as sound fatigue ability against bending. The solution based two-step formation process thus provides a reliable strategy for future application of flexible perovskite solar cells.

关键词： Flexible perovskite solar cells tin oxide Electron-transport-material Wettability Crystallinity Charge extraction

High performance CH3NH3PbIx(SCN)3-x planar perovskite solar cells with low-temperature processed SnO2 electron transport layer

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High performance CH3NH3PbIx(SCN)3-x planar perovskite solar ...

第四届新型太阳能电池学术研讨会

作者： Yang Zhou Zongbao Zhang Yangyang Cai Hui Liu Qiqi Qin Sujuan Wu Junming Liu Institute for Advanced Materials and Laboratory of Quantum Engineering and Quantum Materials South China Normal University Laboratory of Solid State Microstructures Nanjing University

We report a low-temperature and ambient air-processed CHNHPbI(SCN) perovskite planar solar cell(PSCs) based on SnO electron transport *** optimization, the PSCs show an average power conversion efficiency of 15.8%(maximum 16.3%) and superior long-term *** stored in ambient air with the relative humidity exceeds 50%, the PCE can also retain 85% of their initial performance after 700 *** strategy provides a possible way for future commercialization and application in the field of flexible electronic device.

关键词： CH3NH3PbIx(SCN)3-x perovskite solar cells tin oxide low-temperature and air process optoelectronic properties

Preparation and Gas Sensitive Properties of Nanometer-Sized SnO_(2)

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Advances in Manufacturing 1998年第1期 75-79页

作者： Pan Qingyi Dong Xiaowen Xu Jiaqiang Zhang Jianping Shi Liyi School of Chemicstry and Chemical Engineering Shanghai University Zhengzhou Institute of Light Industry

Nanometer sized SnO 2 particles were prepared by a sol gel method using inorganic salt as a precursor material. Its crystallization was investigated by means of TG DTA,IR absorption spectra, X ray diffractometry and TEM as well as its resistivity change and the gas sensitivity varied with temperature were measured in various reducing gas. The results indicate that well crystallized nano sized SnO 2 with size around 15nm can be obtained at annealing temperature 600℃. The activation energy for the growth of nano SnO 2 was calculated to be *** 1 when the annealing temperature was higher than 500℃. The measurements also show that there is a peculiar resistance change varied with temperature for nano SnO *** has relevance to the increase in surface adsorbed oxygen. The selective detectivities to C 4H 10 and petrol can be increased when ruthenium ion was doped in nano SnO 2 as a catalyst and so do the gas sensitivity to CO,CH 4,H 2 etc. when rhodium ion was doped *** detection to the several reducing gas can be realized when the temperature ranged from 260℃ to 400℃.

关键词： sol gel nanometer sized tin oxide gas sensitive property

Collection optimization of photo-generated charge carriers for efficient organic solar cells

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Collection optimization of photo-generated charge carriers f...

第六届新型太阳能电池材料科学与技术学术研讨会

作者： Yang Sun Shengchun Qu Institute of Semiconductors Chinese Academy of Sciences

Collection of photo-generated charge carriers is of significance in organic photovoltaic devices. Herein, we focus on systematically exploring the effective methods to improve the charge collection efficiency in organic solar cells based on PBDB-T: ITIC. In the active layer, we observe that the energy level bending at the interface of acceptor/donor is influential to the recombination of charge carriers. For extracting electrons efficiently, we propose that using SnO instead of ZnO as the electron conducting layer is advantageous in improving short-circuit current(J), power conversion efficiency(PCE), and particularly stability. To unveil the dynamics of hole collection, we use different metals as the anode and find out that enlarging the work function of the anode close to the highest occupied molecular orbital(HOMO) of the donor is beneficial for enhancing the open-circuit voltage(V), J, fill factor(FF) and thus PCE1. 2 T3 he optimized device delivers a PCE of 10.77%. Insights on how to efficiently extract photo-generated charge carriers are elaborated systematically.

关键词： tin oxide Electron transport layer Electrode Energy level Organic solar cells 123

Deep extractive and oxidative desulfurization of dibenzothiophene with SnO2

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Deep extractive and oxidative desulfurization of dibenzothio...

第十届全国催化剂制备科学与技术研讨会（成都）

作者： Aili Liu Panpan Zhang Bao Wang Mingyuan Zhu Bin Dai School of Chemistry and Chemical Engineering of Shihezi University Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical Engineering Shihezi University

The recycling and stability of heterogeneous catalysts are very important for industrialization. The stability of tin based catalyst was low due to its catalytic oxidation in liquid phase. we use a simple method to directly prepare tin oxide nanoparticles catalysts for deep oxidation desulfurization. The effects of catalysts on catalytic activity under different calcination temperatures were also investigated. During the oxidative desulfurization process, Sulfur removal of dibenzothiophene(DBT) in n-octane was 99.8% in 2 h at 60℃ under the conditions of HO/DBT molar ratio of ten and M(catalyst): V(oil) = 0.1 g:10 ml. And there was no significant catalytic performance decrease after 14 recycles. This excellent catalytic activity and recoverability of the catalyst was attributed to the change of specific surface area, acidic site strength of catalysts caused by different heat treatment temperatures, which may produce beneficial Lewis acid sites. The synthesized SnO catalyst was characterized via XPS, XRD, HRTEM, FT-IR, NH-TPD, and ICP-AES.

关键词： tin oxide Oxidative desulfurization Calcination Acid sites Recyclability