JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Yunlv Cheng,Xinshu Zhao,Yulv Yu,Lifang Chen,Tao Cheng,Jin Huang,Yan Liu,Masafumi Harada,Akimitsu Ishihara,Yuan Wang
Few currently applied carbon-supported metal cathode catalysts exhibit satisfactory durability under the harsh operation conditions of proton exchange membrane fuel cells. Herein we report for the first time a highly active In 2 O 3 supported Pt–In alloy nanocluster (NC) catalyst (Pt–In/In 2 O 3 ) toward oxygen reduction reaction , with small alloy NCs and a Pt content of 42 wt%, which exhibits obviously enhanced durability compared to currently applied carbon-supported Pt catalysts (Pt/C) and previously reported Pt NCs-based catalysts with a similar Pt content. The mass activity (MA) and specific activity (SA) over Pt–In/In 2 O 3 are 0.32 A·mg −1 Pt and 1.14 mA cm −2 at 0.9 V (vs. reversible hydrogen electrode (RHE)), respectively. Electron transfer from In to Pt in the alloy NCs occurs as confirmed by X-ray absorption measurements, which is an important cause of the high catalytic activity . After an accelerated aging test of 6000 potential cycles between 1.0 and 1.6 V, the MA loss over Pt–In/In 2 O 3 is 3%, but that over Pt/C is 33%. The catalysts subjected to the aging test are characterized by transmission electron microscopy and X-ray diffraction to understand the extremely high durability.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Lina Wang,Peiyi Yan,Huairui Chen,Zhuo Li,Shu Jin,Xiaoxiang Xu,Jun Qian
Narrow bandgap semiconductor MgIn 2 S 4 has been readily grown onto In 2 O 3 nanofibers by an in situ growing method. The so-formed MgIn 2 S 4 -In 2 O 3 hybrid nanofibers are characterized by strong visible light absorption and intimate MgIn 2 S 4 /In 2 O 3 heterointerfaces. Under visible light illumination ( λ ≥ 400 nm), the hybrid nanofibers demonstrate an exceptionally high photocatalytic activity for Escherichia coli ( E. coli ) disinfection, outcompeting pristine MgIn 2 S 4 , naked In 2 O 3 nanofibers, and many other photocatalytic systems reported. Specifically, the hybrid nanofibers achieve a 7 log reduction in viable cells for merely 20 min illumination while pristine MgIn 2 S 4 and naked In 2 O 3 nanofibers alone are almost inactive. Further analysis indicates that the hybrid nanofibers essentially form a type-II semiconductor heterojunctions which enable spatial separation of photocarriers. Owing to the intimate heterointerfaces, photocarriers can be promptly separated and accumulated respectively in In 2 O 3 and MgIn 2 S 4 thereby allowing continuous generation of copious reactive species for disinfection. This work signifies the usefulness of heterointerfaces in promoting photocarrier separation and provides a useful strategy to upgrade photocatalytic performance from otherwise almost inactive semiconductors.
研究领域:
材料科学
·
光催化
·
纳米材料
·
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2021
·Vol. 12
·期 6
·2103644
·
IF 29.368
Shaotang Yu,Bingyan Li,Jingjing Jiang,Xinge Liu,Shasha Hao,Shuaiqi Han,Weibo Yan,Hao Xin
Solution-processed Cu(In,Ga)(S,Se) 2 solar cells have reached 18% efficiency but still remain much lower compared to state-of-the-art vacuum based solar cells. In comparison to vacuum deposited precursor films, which mostly consist of stacked metal and/or metal chalcogenide layers and takes a liquid Cu 2− x Se assisted grain growth mechanism, solution-processed precursor films normally have a chalcopyrite structure that is already developed. Understanding the grain growth mechanism of solution-processed absorbers is crucial to control the electronic properties and further improve the device photovoltaic performance. Here, the grain growth mechanism of a N -methyl-pyrrolidone solution processed precursor film with composition from Cu-poor to Cu-rich is systematically investigated. Characterizations show that the chalcopyrite structured CuInS 2 precursor film takes a direct phase transformation grain growth mechanism and forms the CuIn(S,Se) 2 (CISSe) absorber without the presence of a detrimental Cu 2− x Se phase with Cu/In ratio up to unit. Beyond the stoichiometric composition, the coexistence of Cu 2− x Se facilitates grain growth but deteriorates device performance. The direct phase transformation mechanism not only avoids detrimental Cu 2− x Se but also enables fabrication of a highly efficient CISSe device near stoichiometric composition with high tolerance to the Cu/In ratio (from 0.90 to 1.05). By preliminary optimization, a CISSe solar cell with an efficiency of 13.6% is achieved in ambient air with a Cu/In ratio of 0.93.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Xiaohua Wang,Yanwei Li,Guang Sun,Jianliang Cao,Yan Wang
Recently, because of the urgent need for safety and health protection, there has been a growing focus on exploring effective and feasible gas sensors based on metal oxide semiconductors (MOSs) for detecting trace levels of hydrogen sulfide (H2S). In this context, a cobalt (Co) doping strategy was proposed to improve the H2S-sensitive properties of In2O3 nanomaterials, enabling them to monitor 1 ppm of H2S at a relatively lower temperature. The Co-doped In2O3 hierarchical porous nanocubes (Co–In2O3 HPNCs) were prepared through a hydrothermal route using In(OH)3 as a precursor. When utilized as a sensing material to detect H2S, the Co–In2O3 HPNCs demonstrated significant enhancements compared to pure In2O3. These enhancements include a reduction in the operating temperature (260 vs 300 °C), a significant increase in response (36.99 vs 12.28 for 20 ppm of H2S), and better selectivity (13.21 vs 3.07 times to ethanol). Even to 1 ppm of H2S, the Co–In2O3 sensor can give a response value of 1.86, highlighting its substantial potential for detecting H2S at the limit of detection (LOD) of 1 ppm. A detailed analysis of the multiple sensitization effects of Co doping reveals that these improved H2S sensing characteristics of Co–In2O3 HPNCs can be primarily traced back to three factors, namely, an increased oxygen vacancy concentration, a narrowing of the bandgap, and an upward shift of the Fermi level.
研究领域:
材料科学
·
传感器技术
·
环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2015
·Vol. 17
·期 8
·4482-4488
·
IF 8.02
Xiaojiao Kang,Yanchun Yang,Lijian Huang,Ying Tao,Lan Wang,Daocheng Pan
Water-soluble CuInSe2/ZnS (CISe/ZnS) and AgInSe2/ZnS (AISe/ZnS) core/shell quantum dots (QDs) on a multigram scale have been synthesized by using gelatin and thioglycolic acid as dual stabilizers in an electric pressure cooker. The core/shell QDs present composition-tunable emission in the range of 582 nm to 686 nm with a maximum PLQY of 23.3%. The core/shell QDs also exhibit good water/buffer stability. The red-emitting CISe/ZnS QDs are applied as wavelength converters to achieve warm white light-emitting diodes.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yi Wang,Jixiang Xu,Jun Wan,Jing Wang,Lei Wang
Developing a photocatalyst for efficient reduction of carbon dioxide (CO 2 ) is a long-term goal to address global climate change. In this work, a tube-like indium oxide@indium phosphide/cuprous oxide ( In 2 O 3 @InP/Cu 2 O) photocatalyst was prepared by annealing-phosphidation of In-Materials of Institute Lavoisier-68 (In-MIL-68) followed by electrodeposition of Cu 2 O, which was used to reduce CO 2 with water under light irradiation . Partial phosphidation of In 2 O 3 endowed In 2 O 3 @InP/Cu 2 O with strong light-harvesting ability. The In 2 O 3 @InP heterojunction combined with in situ loaded Cu 2 O provided a dual Z-scheme heterojunction for efficient electrons-holes separation. Under the synergisms of each component, the optimized In 2 O 3 @InP 60 /Cu 2 O-1 exhibited strong adsorption of CO 2 and excellent photocatalytic performance in CO 2 reduction. The yields of CO and CH 4 were 13.7 and 38.8 μmol g −1 , respectively, after 5 h simulated light illumination, higher than the corresponding yields with In 2 O 3 (CO: 7.2 μmol g −1 , CH 4 : 13.2 μmol g −1 ). This study may provide some insights into the design of specific ternary photocatalysts with dual Z-scheme charge transfer mode for CO 2 reduction.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2015
·
IF 2.037
Fangbiao Zhao,Yongcun Zou,Xueju Lv,Hongwei Liang,Qiong Jia,Weikun Ning
Magnetic cobalt ferrite (CoFe2O4)-coated zeolite was prepared with a hydrothermal method and used for the adsorption of gallium and indium. The magnetic zeolite was characterized with X-ray diffraction, X-ray photoelectric spectroscopy, Fourier-transformed infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy to determine its crystal structure, element valence, chemical bond, morphology, and grain size, respectively. Gallium and indium were determined with graphite furnace atomic absorption spectrometry. Effects of experimental parameters, including solution pH and adsorption time, were discussed. The experimental data were studied by employing various isotherm and kinetic models, such as Langmuir/Freundlich and pseudo-first-order/pseudo-second-order models. Furthermore, thermodynamic functions, such as changes of enthalpy (ΔHo), entropy (ΔSo), and Gibbs energy (ΔGo), were obtained.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Weitao Jing,Kunyang Zou,Xin Dai,Junjie Sun,Qiang Tan,Yuanzhen Chen,Yongning Liu
Lithium metal has been considered one of the most ideal anode materials for batteries due to its ultrahigh theoretical capacity and energy density . However, the unstable SEI layer and the growth of Li dendrites cause poor cycling performance and even safety hazards, which also severely restrict the commercial application of Li metal batteries . In this paper, a Li-In alloy anode was designed and prepared by mechanical rolling of both Li and In pure metal foils together. Three-dimensional Li-In alloy network structures are formed by mechanical alloying during rolling, and the 3D Li-In alloy structure not only possesses strong lithium affinity but also possesses more interface between the Li matrix and the second phase formed in mechanical alloying, which can promote rapid diffusion at the interface and uniform deposition of lithium ions . As a result, the Li-In electrode shows an extremely low overpotential of approximately 35 mV at a high current density of 5 mA cm −2 during the lithium plating/stripping experiment. In addition, the battery revealed a higher discharge capacity of 295 mAh/g at 0.05 C and capacity retention of 80 % after 150 cycles when the Li-In alloy was used as the anode electrode in a cell with Li 1.2 Ni 0.2 Mn 0.6 O 2 as the cathode. The Li-In alloy can also be used as anode of Li-S battery, the result showed that the capacity decay rate was reduced from 0.22 % to 0.1 % after 200 cycles without any decoration treatment of S cathode except conductive carbon. This work verified that indium in the Li-In alloy can effectively protect the lithium anode and provides an idea for the practical application of lithium metal batteries.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Weinan Dong,Xuehong Qiu,Weisong Zhao,Bao Guo,Kaixi Jiang
In zinc hydrometallurgical plant, neutralizing precipitation and the subsequent dissolution are implemented to enrich scattering metals, Gallium (Ga) and Indium (In), and Cu from zinc leaching solution, facilitating further extraction and separation of Ga/In and others. The formation of jarosite presents both challenges and opportunities for Ga/In extraction, as Ga/In can substitute Fe within the jarosite structure. In this work, the evolution of the Ga/In occurrence state, especially its relationship with jarosite was investigated and the role of Fe/K/Pb was emphasized. Results show that jarosite formation is inevitable at pH 1–2, with K-jarosite forming kinetically faster than Pb-jarosite. By supplying sufficient K, precipitation rates reached 95.7 % for Ga and 98.1 % for In at pH 2 with little Cu/Ge loss. Eventually, a more appropriate and efficient flowsheet for recovery of scattering metals and Cu from zinc leaching solution is recommended, providing a practical framework comprehensive utilization in zinc hydrometallurgy.
研究领域:
冶金学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 16
·1-8
·
IF 2.8
Tang Jingwen,Tang Haifeng,Tian Zhihua,Wu Fushuo,Zhang Peigen,Sun ZhengMing
Ti 2 InB 2 , a typical member of MAB phases (a family of layered transition metal borides), has gained wide attention due to its excellent properties. However, in this work, Ti 2 InB 2 is found to share a similar A-site metal whisker growth phenomenon with MAX phases (a family of layered carbides/nitrides), which casts doubt on its reliability, and therefore would hinder its applications in advanced technologies. Specifically, the weaker bond between Ti and In atoms in Ti 2 InB 2 leads to the exfoliation of In atomic layers under mechanical damage. It is proposed that the In atoms released by the mechanochemically decomposed Ti 2 InB 2 have high chemical potentials and are inclined to crystallize, which is responsible for the In whisker growth. Furthermore, it is observed that the decomposition degree of Ti 2 InB 2 affects the whisker growth propensity and morphology. Understanding the In whisker growth mechanism is meaningful to ensure the reliability as Ti 2 InB 2 is finding technological applications.
研究领域:
材料科学
·
力学
✓ 已验证
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
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 24
·2212213
·
IF 29.4
Ziwan Du,Yuxuan Lai,Ruirong Bai,Bolun Wang,Qiang Zheng,Chuan Xu,Teng Lu,Jun Pei,Wei Li,Yu-Ning Wu,Kai Liu,Yun Liu,Engang Fu,Jing-Feng Li,Yigang Yang,Qian Li
Direct neutron detection based on semiconductor crystals holds promise to transform current neutron detector technologies and further boosts their widespread applications. It is, however, long impeded by the dearth of suitable materials in the form of sizeable bulk crystals. Here, high-quality centimeter-sized LiInP 2 Se 6 single crystals are developed using the Bridgman method and their structure and property characteristics are systematically investigated. The prototype detectors fabricated from the crystals demonstrate an energy resolution of 53.7% in response to α -particles generated from an 241 Am source and robust, well-defined response spectra to thermal neutrons that exhibit no polarization or degradation effects under prolonged neutron/ γ -ray irradiation. The primary mechanisms of Se-vacancy and In Li antisite defects in the carrier trapping process are also identified. Such insights are critical for further enhancing the energy resolution of LiInP 2 Se 6 bulk crystals toward the intrinsic level (≈8.6% as indicated by the chemical vapor transport-grown thin crystals). These results pave the way for practically adopting LiInP 2 Se 6 single crystals in new-generation solid-state neutron detectors.
研究领域:
材料科学
·
核技术应用
✓ 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）