JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Chunru Li,He Song,Changming Mao,Hongrui Peng,Guicun Li
Antimony (Sb) is an attractive anode material for lithium-ion batteries with high theoretical capacity. However, its practical application is greatly hindered by the rapid capacity fading due to the large volume expansion during lithiation. Tuning the morphology of active materials at the nanoscale or designing reasonable components is essential to address this issue. Employing an antimony sulfide nanorod as semi-sacrificial template, here, we successfully synthesize one-dimensional MoS 2 sheets-decorated Sb@Sb 2 S 3 @C(MoS 2 -Sb@Sb 2 S 3 @C) nano-structure via facile thermal carbonization of Mo-polypyrrole complex coating film. During annealing, metallic Sb from the partial reduction of Sb 2 S 3 nanorods is embedded into amorphous carbon nanotubes that are derived from polypyrrole and simultaneously MoS 2 nanosheets forms on the surface of Sb-Sb 2 S 3 -C nanostructures. This unique hierarchical tubular composite not only can serve as robust skeleton frameworks for accommodating volume changes of metallic Sb and Sb 2 S 3 during cell cycling, but also are characterized by high electronic conductivity (because of the amorphous carbon nanotubes and metallic Sb) and abundant active sites, both of which are beneficial for the improvement of Li-ion storage properties. As expected, the MoS 2 -Sb@Sb 2 S 3 @C composite exhibit a high specific capacity (1596 mAh g −1 at 0.1 A g −1 ), high rate capability (481 mAh g −1 at 5 A g −1 and 355 mAh g −1 at 8 A g −1 ), and stable cycling performance (760 mAh g −1 maintained after 100 cycles at 1 A g −1 ). Our work potentially sheds some light on future development of alloy-type anodes for battery applications.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
Advanced Electronic Materials
·
2018
·Vol. 4
·期 7
·1800154
·
IF 5.466
Qiu Li,Aixiang Wei,Jianting Lu,Lili Tao,Yibin Yang,Dongxiang Luo,Jun Liu,Ye Xiao,Yu Zhao,Jingbo Li
Layered 2D semiconductors, such as graphene and transition-metal dichalcogenides (TMDs), are receiving intensive attention owing to their great performance in electronic and optoelectronic application during the past few years. Among them, SnS has similar anisotropy to black phosphorus and high photoresponse in the near infrared range, rendering it as an ideal candidate for infrared photodetectors. In this work, large-size (up to 330 µm) and high-quality single-crystalline SnS nanoplates are synthesized successfully via controlled chemical vapor deposition technique and characterized by field-emission scanning electron microscopy, X-ray diffraction, confocal Raman system, atomic force microscope, transmission electron microscopy, and photoluminescence spectroscopy. Photodetectors based on as-grown SnS nanoplates are fabricated with back-gated field effect transistors (FETs) configuration, exhibiting a high mobility of 17.1 cm 2 V −1 s −1 . Photodetectors based on the SnS FETs demonstrate excellent optoelectronic performance both in visible and near-infrared spectral range. Typically, photoresponsivity of 197.7 A W −1 , photoresponse time of 39 ms, and external quantum efficiency of 6.06 × 10 4 % are exhibited under the irradiation of 405 nm laser. The wide response range and ultrahigh sensitivity make the large-area single crystal SnS nanoplate a promising candidate for future application in optoelectronics.
研究领域:
材料科学
·
纳米科技
·
半导体物理
·
光电子学
·
凝聚态物理
✓ 已验证
DOI
高影响因子
DESALINATION
·
2012
·
IF 2.59
Lei Ling,Yuming Zhou,Jingyi Huang,Qingzhao Yao,Guangqing Liu,Peixin Zhang,Wei Sun,Wendao Wu
In an attempt to control Ca 3 (PO 4 ) 2 , CaCO 3 , and CaSO 4 deposits in industrial recycling water systems, an acrylic acid (AA)-allyloxy poly(ethylene glycol) polyglycerol carboxylate (APEG-PG-COOH) copolymer was synthesized as a nonphosphorus inhibitor. The synthesized polymer was characterized by 1 H NMR. The performance of PAA/APEG-PG-COOH on inhibition of Ca 3 (PO 4 ) 2 , CaCO 3 and CaSO 4 precipitation was studied through static scale inhibition tests. It was shown that PAA/APEG-PG-COOH exhibited excellent ability to control inorganic minerals, with approximately 100% CaSO 4 inhibition and 99.89% Ca 3 (PO 4 ) 2 inhibition at levels of 3 and 6 mg/L PAA/APEG-PG-COOH, respectively. PAA/APEG-PG-COOH also displayed ability to prevent the formation of CaCO 3 scales. The effects on formation of Ca 3 (PO 4 ) 2 , CaCO 3 and CaSO 4 were investigated with combination of Scanning electronic microscopy (SEM), Transmission electron microscopy (TEM), and X-ray powder diffraction (XRD) analysis, respectively.
研究领域:
环境化学
·
材料科学
·
工业水处理
·
高分子化学
·
腐蚀与防护
·
矿物结垢控制
✓ 已验证
DOI
高影响因子
POWDER TECHNOLOGY
·
2019
·
IF 3.413
Zhilin Xi,Shuhui Zhou,Longzhe Jin
In this work, a self-hardening foam-sol (SHF) is proposed to control the diffusion of static coal dust. The SHF was mainly synthesized by a foaming solution (composed of 1 g/L polyethylene oxide (PEO), 25 g/L sodium dodecyl sulfate (SDS), 100 g/L sodium silicate and 874 g/L water) and organic acid with a concentration range of 10 to 13 g/L. Based on fluorescence spectrophotometry , drop shape analysis, X-ray photoelectron spectroscopy and scanning electron microscopy, several conclusions could be found. The critical micelle concentration of SDS was 25 g/L, when most of the pyrene pendants were solubilized into the SDS micelles to form the hydrophobic mixed micelles, and excimer formation began to reach a maximum. The SHF had optimal wetting ability with the smallest contact angle of 17 o , due to PEO-bonded water and SDS forming hydrogen and a dual adsorption layer, which could enhance the wetting ability of the SHF on coal dust surfaces. The SHF had the best accepted loss of liquidity time (180–86 s) and self-hardening time (236–121 s) via the reaction of sodium silicate and organic acid. The pores and cracks among dust particles could be linked closely by SHF via the solid bridge force. The primary components were silica and sodium carbonate with crystal water and hydrophilic C O and C O or O–C–O functional groups. Based on the dust suppression experiment, the dust suppression efficiency was almost 100% at airflow speeds below 12 m/s. Obviously, the dust particles could be controlled via their surfaces being covered by a layer of SHF, since the SHF has strong hydrophilic properties and the solid bridge force. In addition, vehicle-mounted SHF preparation equipment was designed.
研究领域:
环境工程
·
矿业安全
·
胶体与界面化学
·
职业健康
·
颗粒物控制
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Ming Li,Xiaoqin Yuan,Haoran Ruan,Xiandong Wang,Yongping Liu,Zhenhuan Lu,Jiefeng Hai
A new method for synthesizing freestanding PbS-CH 3 NH 3 PbI 3 (MAPI) core-shell nanoparticles (NPs) with enhanced light absorption and photoelectric properties was reported. The transmission electron microscopy (TEM) and energy dispersive spectrometer (EDS) analysis confirmed the core-shell structure of the obtained sample. The Vis-NIR spectra proved the core-shell sample absorbed light both in visible and near infrared region . For comparison, oleic acid/oleylamine molecule capping PbS NPs, MAPI molecule capping PbS NPs, and PbS-MAPI core-shell NPs were used to fabricate Schottky solar cells. PbS-MAPI core-shell NPs based solar cells delivered a photocurrent response from both the PbS and MAPI, and achieved the highest overall PCE.
研究领域:
材料科学
·
纳米科技
·
光电子学
·
能源材料
·
半导体物理
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2014
·Vol. 21
·期 21
·12382-12389
·
IF 2.757
Li Chenyu,Chen Ligang,You Xiaoxiao
A novel method for the extraction of Sudan dyes including Sudan I, II, III, and IV from environmental water by magnetic titanium dioxide nanoparticles (Fe 3 O 4 @TiO 2 ) coated with sodium dodecylsulfate (SDS) as adsorbent was reported. Fe 3 O 4 @TiO 2 was synthesized by a simple method and was characterized by transmission electron microscopy, Fourier-transform infrared spectrometry, and vibrating sample magnetometer. The magnetic separation was quite efficient for the adsorption and desorption of Sudan dyes. The effect of the amount of SDS, extraction time, pH, desorption condition, maximal extraction volume, and humic acid on the extraction process were investigated. This method was employed to analyze three environmental water samples. The results demonstrated that our proposed method had wide linear range (25–5,000 ng L −1 ) with a good linearity ( R
2 > 0.999) and low detection limits (2.9–7.3 ng L −1 ). An enrichment factor of 1,000 was achieved. In all three spiked levels (25, 250, and 2,500 ng L −1 ), the recoveries of Sudan dyes were in the range of 86.9–93.6 %. The relative standard deviations obtained were ranging from 2.5 to 9.3 %. That is to say, the new method was fast and effective for the extraction of Sudan dye from environmental water.
研究领域:
分析化学
·
环境科学
·
纳米技术
·
污染物检测
·
样品前处理
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Baosheng Li,Xue Ma,Yuying Xin,Zoltán Major,Xianfa Zhang,Tingting Wang,Lihua Huo,Xiaoli Cheng,Yingming Xu
Real-time detection and degradation of chemical warfare agents have great importance in both human healthcare and environmental protection. Herein, hierarchical Fe 2 O 3 nanotube arrays were constructed by a simple in situ solvothermal method for effective monitoring of 2-chloroethyl ethyl sulfur enigma (2-CEES). The resultant Fe 2 O 3 sensor exhibited ultrahigh response (9.6) and short response time (3.7 s) to 10 ppm 2-CEES at 170 ℃. The sensor also behaved low detection limit (30 ppb), good stability, and high moisture resistance . Notably, Fe 2 O 3 nanotube arrays demonstrated high degradation capacity (95.2%) (100 ppm, 10 min). Such excellent performance of the portable Fe 2 O 3 sensor for 2-CEES comes from the synergistic effect of multiple microstructural features , active sites, and surface-adsorbed oxygen species at operating temperature. The 2-CEES sensing mechanism of Fe 2 O 3 nanotube arrays has been discussed in detail. This work offers guidance for designing high-performance sensing materials to realize efficient detection of chemical warfare agents.
研究领域:
材料科学
·
环境监测
·
化学传感
·
纳米技术
·
公共安全
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Kailin Li,Changqing Yin,Xingjian Dai,Jiayun Zhang,Shuang Yi,Jinsong Rao,Yuxin Zhang
Layered transition metal hydroxide, a clay-like material, possessing characteristics of large specific surface area, adjustable fraction, and plentiful active components make it a potential energy storage material , especially in the background of energy and environment crisis. Herein, comprehensive applications of cobalt-aluminum-based LDHs for supercapacitors are proposed. Binder-free electrodes were successfully synthesized such as Co 3 Al 1 -LDH/Ni, Ni 2 Co 1 Al 1 -LDH/Ni and Ni 1 Co 2 Al 1 -LDH/Ni using a rapid green hydrothermal approach. Subsequently, further sulfuration was carried out to obtain a heterostructure of sulfide/layered hydroxide. The electrochemical energy storage properties of binder-free electrodes were investigated, which show that the performance of ternary LDH electrode is better than that of binary one, and the incompletely sulfuration Ni 1 Co 2 S/Ni has the optimal electrochemical performance among all electrodes, with a specific capacitance of 2186 F g −1 at 1 A g −1 . The Ni 1 Co 2 S//AG hybrid supercapacitor (HSC) device assembled with Ni 1 Co 2 S as positive electrode and active graphene as negative electrode delivers an energy density of 13 Wh kg −1 at a power density of 749 W kg −1 , good rate capability and cycling stability.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能材料
·
电化学储能
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2019
·Vol. 25
·期 70
·16054-16062
·
IF 5.16
Raheela Naz,Qinglei Liu,Waseem Abbas,Muhammad Imtiaz,Imran Zada,Javed Ahmad,Tengfei Li,Jiajun Gu
A new ternary composite of 1T-molybdenum disulfide, hexagonal tungsten trioxide, and reduced graphene oxide (M-W-rGO) is synthesized by using a one-pot hydrothermal process. The synergetic effect of 1T-MoS 2 and hexa-WO 3 nanoflowers improves the electrochemical performance for supercapacitors by inducing additional active sites and hexagonal tunnels, respectively, which lead to high storage capacity and easy transfer of electrolyte ions. The ternary M-W-rGO composite has a high specific capacitance of 836 F g −1 at 1 A g −1 , which is nearly twice that of binary composites of M-rGO and W-rGO with high capacitance retention of 86.35 % after 3000 cycles at a high current density of 5 A g −1 . This study provides a new ternary composite that can be used as an electrode material for high-performance supercapacitors. Graphical The flower of supercapacitors : 1T-MoS 2 and hexa-WO 3 nanoflowers are grown on a 3D network of reduced graphene oxide by using a one-pot hydrothermal process. The hexagonal tunnel structure of WO 3 and 1T conducting phase of MoS 2 provide additional active sites, high storage capacity, and easy electronic transportation for high-performance supercapacitor applications.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2017
·Vol. 5
·期 2
·383-390
·
IF 4.136
Hang Zhao,Jianlong Li,Hao Wu,Tiange Dong,Yun Zhang,Heng Liu
The molybdenum sulfide has a layered structure, similar to graphite, and delivers a good transfer channel for lithium ions as an anode. To enhance the discharge capacity and cycling stability of the molybdenum sulfide, exfoliated MoS 2 nanoflakes with a N-doped carbon coating were prepared by exfoliation of bulk MoS 2 and carbonization of a polydopamine coating. The morphological characteristics show that the carbonized polydopamine was coated on the surface of MoS 2 nanoflakes successfully. Consequently, as-prepared E-MoS 2 @NC delivers a good electrochemical performance and cycling stability as the anode for lithium-ion batteries; the reversible lithium storage capacity was up to 650 mAh g −1 at a current density of 0.2 A g −1 , and the discharge specific capacity was stabilized at 562 mAh g −1 even after 200 cycles at a current density of 0.5 A g −1 . Graphical Exfoliation and carbon coating : The exfoliation and polydopamine coating method are combined to prepare a N-doped carbon coating of exfoliated MoS 2 nanoflakes for anodes of lithium-ion batteries. The exfoliation treatment reduced the MoS 2 particle size and shortened the Li-ion migration path. The N-doped carbon coating enhanced the conductivity of exfoliated MoS 2 nanoflakes, promoted the lithium ion transport, and enhanced the corresponding electrochemical performance. The discharge specific capacity could be stabilized at 562 mAh g −1 after 200 cycles at a current density of 0.5 A g −1 .
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Rude Guo,Yanxia Che,Guangyuan Lan,Jianlian Lan,Jianhui Li,Lidan Xing,K. Xu,Weizhen Fan,Le Yu,Weishan Li
Performances of lithium-ion batteries at subambient temperatures are extremely restricted by the resistive interphases originated from electrolyte decomposition, especially on the anode surface. This work reports a novel strategy that an anode interphase of low impedance is constructed by applying an electrolyte additive dimethyl sulfite (DMS). Electrochemical measurements indicate that the as-constructed interphase provides graphite/LiNi0.5Co0.2Mn0.3O2 pouch cells with excellent low-temperature performance, outperforming the interphase constructed by 1,3,2-dioxathiolane 2,2-dioxide (DTD), a common commercially used electrolyte additive. Spectral characterizations in combination with theoretical calculations demonstrate that the improved performance is attributed to the unique molecular structure of DMS, which presents appropriate reduction activity and constructs the more stable and ionically conductive anode interphase due to the weaker combination of its reduction product with lithium ions than DTD. This rational design of interphases via an additive structure has been proven to be a low cost but rather an effective approach to tailor the performances of lithium-ion batteries.
研究领域:
电化学
·
材料科学
·
能源存储
·
界面工程
·
电池技术
✓ 已验证
DOI
高影响因子
Small
·
2018
·Vol. 14
·期 21
·1704367
·
IF 9.598
Sheng Huang,Chao Meng,Min Xiao,Shan Ren,Shuanjin Wang,Dongmei Han,Yuning Li,Yuezhong Meng
Sodium ion batteries (SIB) are considered promising alternative candidates for lithium ion batteries (LIB) because of the wide availability and low cost of sodium, therefore the development of alternative sodium storage materials with comparable performance to LIB is urgently desired. The sodium ions with larger sizes resist intercalation or alloying because of slow reaction kinetics. Most pseudocapacitive sodium storage materials are based on subtle nanomaterial engineering, which is difficult for large-scale production. Here, ferroelectric Sn 2 P 2 S 6 with layered nanostructure is developed as sodium ion storage material. The ferroelectricity-enhanced pseudocapacitance of sodium ion in the interlayer spacing makes the electrochemical reaction easier and faster, endowing the Sn 2 P 2 S 6 electrode with excellent rate capability and cycle stability. Furthermore, the facile solid state reaction synthesis and common electrode fabrication make the Sn 2 P 2 S 6 that becomes a promising anode material of SIB.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
固体化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）