ACS Applied Energy Materials
·
2024
·
IF 5.4
Haitao Zhang,Xinglin Jiang,Shanshan Wu,Xiang Chu,Tao Xiang
Environmentally friendly and self-healable supercapacitors (EFSH-supercapacitors) hold promise to support high safety and extend the lifetime when undergoing mechanical loads and, therefore, share great application in flexible wearable electronics. Here, we develop this kind of a supercapacitor through using a polyampholyte (PA) hydrogel that possesses the capability of salt permeation and self-healing. The ionic conductivity of the PA hydrogel is largely enhanced (up to 13.2 mS cm–1) by both bonding and adsorbing NaCl salt. The balanced electrical and mechanical performance of NaCl infiltrated PA hydrogel facilitates strong electrode–electrolyte interfacial linkage and low charge transfer resistance, which enables the EFSH-supercapacitor to have state-of-the-art electrochemical properties. We show that supercapacitor after structural failure as PA hydrogel electrolyte is cut into two pieces, for which stored energy was previously completely damped, can now be rapidly (8 min) and repeatedly repaired (∼54% after four times self-healing). We also prove that the damage of the whole supercapacitor including both electrodes and electrolyte can also be successfully repaired. The electrolyte-dried supercapacitor recovers to efficient work by adding synthetic sweat, demonstrating its practical application in wearable electronics.
研究领域:
材料科学
·
能源技术
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Chun-Ping Li,Ya-Qi Wu,Fei-Yang Zhang,Li-Xin Gao,Da-Quan Zhang,Zhong-Xun An
Carbon materials with suitable pore size distribution, high specific surface area and good wettability are crucial for the capacitive deionization (CDI) electrode. Herein, the Mg-MOF-74 derived carbon (MMCK) is prepared by solvothermal synthesis, carbonization, and potassium hydroxide (KOH) activation method. The MMCK has super hydrophilicity and rich hierarchical porous structure composed of micropores, mesopores and macropores. The capacitive deionization of MMCK is investigated in NaCl aqueous solution. The MMCK has high oxygen doping amount, and has a high electrosorption capacity (16.82 mg·g −1 ) for 500 mg·L −1 NaCl. This indicates that MMCK is novel and potential material for capacitive deionization.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Shihui Qiu,Wei Li,Wenru Zheng,Haichao Zhao,Liping Wang
Dispersion of graphene in water and its incorporation into waterborne resin have been rarely researched and hardly achieved owing to its hydrophobicity. Furthermore, it has largely been reported that graphene with impermeability contributed to the improved anticorrosion property. Here, we show that highly concentrated graphene aqueous solution up to 5 mg/mL can be obtained by synthesizing hydrophilic polypyrrole (PPy) nanocolloids as intercalators and ultrasonic vibration. On the basis of π–π interaction between PPy and graphene, stacked graphene sheets are exfoliated to the thickness of three to five layers without increasing defects. The corrosion performance of coatings without and with PPy and graphene is obtained by potential and impedance measurements, Tafel curves, and fitted pore resistance by immersing in a 3.5 wt % NaCl solution. It turns out that composite coating with 0.5 wt % graphene additive exhibits superior anticorrosive ability. The mechanism of intercalated graphene-based coating is interpreted as the synergistic protection of impermeable graphene sheets and self-healing PPy and proved by the identification of corrosion products and the scanning vibrating electrode technique.
研究领域:
材料科学
·
腐蚀与防护
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
·
2023
·
IF 3.8
Hao Zhang,Haiqiang Yang,Zhengjun Chen,Fang Yuan,Qiang Yang,Bo Liu
The presence of dissolved salts in water inhibits bubble coalescence, facilitating the generation of microbubbles, while also maintaining a tangentially mobile air-water surface. In this study, we investigated the variation of bubble size and gas holdup with gas velocity in NaCl solutions using a rectangular bubble column and interpreted the experimental data using the one-dimensional drift-flux model. For the generated bubbles at the size between 0.4 mm and 1 mm, we found that the Moore model assumes mobile air-water surfaces, rather than the Schiller and Naumann model, should be used to describe the bubble terminal velocity. The latter model, which assumes an immobile air-water surface, has been used successfully to predict two-phase flow in surfactant solutions but would overestimate the gas holdup by almost 100 % for NaCl solutions. This finding emphasizes the crucial role of surface mobility in determining gas holdup. Thus, we propose the use of a one-dimensional drift-flux model, incorporating the Moore model to describe bubble terminal velocity, for microbubble systems with a mobile air-water interface.
研究领域:
化学工程
·
流体力学
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2022
·
IF 3.269
Shuaiqi Sun,Dan Li,Tao Zhang,Yong Ma,Lingzong Meng,Tianlong Deng,Yafei Guo
The solubilities and refractive indices in the systems NaCl–Na 2 SO 4 –H 3 BO 3 –H 2 O and NaCl–H 3 BO 3 –H 2 O at 323.15 K were investigated with the isothermal dissolution equilibrium method. The phase diagram of the ternary system consists of two single-salt crystallization fields of NaCl and H 3 BO 3 , two solubility univariant curves, and one invariant point. The dry-salt diagram of the quaternary system is composed of three single-salt crystallization fields corresponding to NaCl, Na 2 SO 4 and H 3 BO 3 , three solubility univariant curves, and one invariant point. A comparison of the diagrams of the quaternary system at (298.15, 323.15 and 373.15) K shows that areas of sodium chloride and sodium sulfate salts region increases whereas the area of H 3 BO 3 region decreases distinctly with temperature increasing. Combining the Pitzer parameters and solubilities in the ternary systems in this study and literatures, the lacking Pitzer parameters for H 3 BO 3 were fitted on the basis of Pitzer model. The calculated solubilities with the model agree well with the experimental data. The phase diagrams and Pitzer model for the quaternary system at 298.15 and 323.15 K were then used to conduct a computer simulation of brine separation. All H 3 BO 3 and most of Na 2 SO 4 can be separated from the solution with segmental evaporation method.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2018
·Vol. 101
·期 9
·4038-4043
·
IF 2.956
Wen Bin Hong,Lei Li,Meng Cao,Xiang Ming Chen
NaCl ceramics were prepared by room-temperature cold sintering using moistened NaCl powder with 4 wt% water and dry pressing using dehydrated powder. When the applied uniaxial pressure is low, the relative density of dry-pressed NaCl ceramic is significantly lower than that of cold-sintered ceramic, while the former is 98.5%-99.3% and much higher than the latter (94.3%-94.6%) for high applied pressure of 200-300 MPa. The uniaxial pressure-induced plastic deformation dominates the densification of dry-pressed NaCl ceramic, and also plays a role during cold sintering as well as the dissolution-precipitation process. The lower density of cold-sintered NaCl ceramic under high applied pressure is attributed to the trapped water in ceramic body during cold sintering. Besides, the presence of water always promotes the microstructural homogeneity, which is responsible for the much higher Qf value of cold-sintered NaCl ceramic. The optimal microwave dielectric properties with ε r = 5.55, Qf = 49 600 GHz, and τ f = −173 ppm/°C are obtained in cold-sintered NaCl ceramic under the applied pressure of 300 MPa, indicating that it is a promising candidate as a microwave dielectric material.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 76
·40352-40358
·
IF 3.708
Xing Li,Yong-De Yan,Mi-Lin Zhang,Yun Xue,Hao Tang,De-Bin Ji,Zhi-Jian Zhang
The electrochemical reduction of Nd(III) was investigated on an inert W and a liquid Al electrode in molten NaCl–KCl eutectic salt. On both W and liquid Al electrodes, the reduction of Nd(III) ions to Nd(0) metal occurred in a single reaction step, which avoids the corrosion reaction: 2Nd(III) + Nd → 3Nd(II). Therefore, corrosion of Nd metal in this molten chloride media is not expected. The co-reduction behavior of Nd(III) and Al(III) ions was studied on a W electrode in NaCl–KCl–AlCl3–NdCl3 melts. Five kinds of Al–Nd intermetallic compound were detected via cyclic voltammetry and open circuit chronopotentiometry. Intermittent galvanostatic electrolysis was employed on liquid Al electrodes to extract Nd in the form of Al–Nd alloys in NaCl–KCl–NdCl3 melts. Nd, AlNd3, Al2Nd, and AlNd phases were identified by X-ray diffraction (XRD). With the increase of electrolytic time, the content of Nd-rich Al–Nd intermetallic compounds in the Al–Nd alloy increased. The morphology and micro-zone chemical analysis of the deposits were characterized by a scanning electron microscope (SEM) equipped with an energy dispersive spectrometer (EDS), and the Al11Nd3 phase was confirmed by EDS analysis.
研究领域:
冶金学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2023
·Vol. 13
·期 7
·1246
·
IF 3.4
Wenjuan Qi,Desheng Ding,Weijie Luo,Weiliang Jin,Qian Kou,Chuntao Ge,Saijun Xiao
The hardness and wear resistance of amorphous Al–Mn alloy coatings can be improved by incorporating ceramic particles into them to extend their application. In this paper, Al–Mn/WC composite coatings have been prepared with electrodeposition in stirred AlCl3–NaCl–KCl–MnCl2molten salts at 180 °C with the addition of WC particles. The effects of stirring speed (400–700 rpm) and cathode current density (15–75 mA/cm2) on the produced Al–Mn/WC composite coatings have been studied. At 600 rpm and 700 rpm, the Al–Mn/WC composite coatings exhibited the best uniform distribution of the embedded WC particles, with the tested microhardness value up to 650 HV0.1, compared with 530 HV0.1of the Al–Mn alloy. Moreover, under various cathode current densities, the best quality of the Al–Mn/WC composite coating was obtained at 55 mA/cm2, with a homogeneous distribution of WC particles and the highest microhardness value (670 HV0.1). It is expected that this method could be extended to be applied for the preparation of aluminum-based and magnesium-based ceramic composite coatings.Keywords:AlCl3–NaCl–KCl–MnCl2molten salts;electrodeposition;WC particles;Al–Mn/WC composite coating
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 4
·046532
·
IF 1.449
Chen Chen,Binxu Lan,Kang Liu,Hongbo Wang,Yuxin Deng,Yufei Zuo,Xiaohan Xu,Cheng Chen,Zhen Chen,Ping Luo,Shijie Dong
Herein, we prepared Al–Bi–NaCl composites by mechanical ball milling and investigated the effects of ball milling time on their hydrogen production performance, additionally analyzing energy conversion during ball milling. Subsequently, the effects of Bi and NaCl content and initial temperature on hydrogen production performance were studied. Moreover, the phase, morphology, and elemental composition of these composites and by-products of their hydrolysis were studied by a range of instrumental techniques. An optimal hydrogen yield of 1140 ml g−1 (in 1 h) was obtained at a milling time of 4 h, and the results of instrumental characterization showed that no new phase was formed during ball milling (i.e., Al, Bi, and NaCl were only mechanically mixed) and that the constituent elements were evenly distributed in the composite. Hydrolysis by-products were identified as porous Al(OH)3 and AlO(OH), that is, Bi did not participate in the reaction.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2019
·Vol. 97
·期 12
·3002-3011
·
IF 1.61
Jie Ren,Yi-Ling Liu,Li Feng,Chun-Wei Liu
The electrochemical preparation of NaClO has been widely used for the production of industrial disinfectant. To reduce the cost of electrode preparation using the brushing method, this paper introduces a method for the electrodeposition for RuO 2 /Ti and RuO 2 -IrO 2 /Ti preparation and NaCl solution electrolysis. The deposition of Ir improves the uniformity and stability of the RuO 2 /Ti electrode. The optimum preparation conditions and additive concentrations were investigated in detail through the orthogonal experiment. By adjusting the electroplating time, temperature and voltage, the electrode with a high content of available chlorine was synthesized successfully. The physicochemical properties of the as-prepared RuO 2 /Ti and RuO 2 -IrO 2 /Ti were determined by XRD, SEM-EDS, and XPS, and the electrochemical performance and lifetime of the RuO 2 /Ti and RuO 2 -IrO 2 /Ti was verified via an electrochemical workstation. Uniform and stable RuO 2 /TiO 2 and RuO 2 -IrO 2 /TiO 2 were synthesized successfully for the electrolysis of the NaCl solution.
研究领域:
材料科学
·
电化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2023
·
IF 2.6
Tingting Zhou,Xueli Huang,Baharguli Hadeerbieke,Fangning Yan,Xueying Wang,Qinglong Luo
The phase diagram can guide the comprehensive utilization of salt lake brine, particularly lithium extraction. In this paper, the study on phase equilibria of the quinary system Li+, Na+, K+, Mg2+//Cl––H2O saturated with NaCl·2H2O and its subsystem Li+, Na+, Mg2+//Cl––H2O at 258.15 K were carried out using the isothermal dissolution equilibrium method. Based on the experimental data, equilibrium diagrams for stable phases were plotted. For the equilibrium diagram of the quaternary system Li+, Na+, Mg2+//Cl––H2O at 258.15 K, there are two invariant points, five univariant curves, and four crystallization fields. The quinary system Li+, Na+, K+, Mg2+//Cl––H2O saturated with NaCl·2H2O at 258.15 K contains three invariant points, seven univariant curves, and five crystallization fields. Comparing the phase diagram of the system at 258.15 K to that at 298.15 K reveals that, except KCl, all crystallization zones have decreased, and LiCl·MgCl2·7H2O has the smallest crystallization zone compared to the other salts in the systems. This fundamental research could be valuable for promoting comprehensive utilization of the lithium-containing salt lake brine.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 6
·2629
·
IF 4.6
Xinru Ma,Xuxia Shai,Yu Ding,Jie Zheng,Jinsong Wang,Jiale Sun,Xiaorui Li,Weitao Chen,Tingting Wei,Weina Ren,Lei Gao,Shukang Deng,Chunhua Zeng
Thermoelectric (TE) technology, which can convert scrap heat into electricity, has attracted considerable attention. However, broader applications of TE are hindered by lacking high-performance thermoelectric materials, which can be effectively progressed by regulating the carrier concentration. In this work, a series of PbSe(NaCl)x(x = 3, 3.5, 4, 4.5) samples were synthesized through the NaCl salt-assisted approach with Na+and Cl−doped into their lattice. Both theoretical and experimental results demonstrate that manipulating the carrier concentration by adjusting the content of NaCl is conducive to upgrading the electrical transport properties of the materials. The carrier concentration elevated from 2.71 × 1019cm−3to 4.16 × 1019cm−3, and the materials demonstrated a maximum power factor of 2.9 × 10−3W m−1K−2. Combined with an ultralow lattice thermal conductivity of 0.7 W m−1K−1, a high thermoelectric figure of merit (ZT) with 1.26 at 690 K was attained in PbSe(NaCl)4.5. This study provides a guideline for chemical doping to improve the thermoelectric properties of PbSe further and promote its applications.Keywords:chemical doping;salt-assisted;NaCl doping;PbSe;thermoelectric material;thermoelectric performance
研究领域:
材料科学
·
物理学
✓ 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）