JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Guilong Liu,Mingyuan Xu,Ruping Cao,Zihan Zhao,Wenzhuo Yuan,Yong Liu,Ang Cao,Lijuan Wang,Xianming Liu
SnS with high theoretical capacity, large lamellar spacing, and favorable voltage plateau is considered as a highly prospective anode material for sodium-ion batteries (SIBs). Nevertheless, the unsatisfied intrinsic conductivity and damaging volume variation during cycles restricted its specific capacity and potential application. In this work, a synergistic sodium storage of interfacial engineering and Na 2 S adsorption was proposed to boost the electrochemical kinetics of SnS by vertically growing SnS@C nanosheets on MBenes. The experimental and theoretical calculation results verified that the nanosheets, heterogeneous interface, and charge transfer between Mo 4/3 B 2 T x and SnS offered rapid ion diffusion pathways and ameliorated the intrinsic conductivity, promoting the electrochemical kinetics. The sufficient sulfur vacancies and strong adsorption ability of Na 2 S on MBenes provided supplementary active sites for ion adsorption and suppressed the shuttle effect of Na 2 S, improving the electrochemical capacity and reversibility. Consequently, the MBenes-SnS@C anode delivered high capacities of 411 mAh g −1 at 1 A g −1 and 420 mAh g −1 after 100 cycles at 0.5 A g −1 . The synergistic sodium storage mechanism arising from interfacial effects and Na 2 S adsorption offered novel insights for the rational design of high-performance transition metal sulfide anodes for SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 14
·4634-4644
·
IF 6.4
Yue Jian,Tianliang Xie,Litao Han,Dongxing Kou,Wenhui Zhou,Zhengji Zhou,Shengjie Yuan,Yuena Meng,Yafang Qi,Sixin Wu
As a promising absorber material for thin film solar cells, the highest reported power conversion efficiency (PCE) of Cu2ZnSn(S,Se)4 (CZTSSe) is still far from the detailed balance limit of efficiency due to the large VOC deficit. Back contact engineering plays an important role in promoting the CZTSSe solar cell towards realizing high PCE. In this study, a MoO3-modified layer with the highest oxidation state 6+ and better thermal stability was in situ introduced by spin-coating Na2S aqueous solution on the Mo electrode. The results demonstrate that the Na2S layer at the rear contact provides more Na to diffuse into the absorber, thus improving the crystallinity of the film and the quality of the p–n heterojunction, and the carrier collection in the neutral region and at the front interface of the devices is enhanced. The formation of the MoO3 layer can also inhibit the decomposition reaction between Mo and CZTSSe, which minimizes the secondary phases and voids, and improves the quality of the back interface. Moreover, the band alignment and interfacial barrier at the back contact were modified by the MoO3 layer, resulting in better carrier collection and the reduction of photogenerated carrier recombination. By optimizing the Na2S (MoO3) layer, the average PCE of the CZTSSe solar cell increased to 12.48% from 10.22% with the large VOC increments of 60 mV and FF increments of 5%, and the best performance was achieved, with an active area efficiency of 12.74% without the anti-reflection coating layer.
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
ADVANCED MATERIALS
·
2025
·
IF 26.8
Shaoqing Lu,Zhengyi Zhu,Weite Meng,Jian Wang,Lulu Huang,Mengyao Li,Aziz Genç,Siqi Huo,Khak Ho Lim,Andreu Cabot,Yucheng Wu,Yu Zhang,Min Hong,Jian Yan,Yu Liu
Thermoelectric (TE) materials, capable of directly converting heat into electricity, offer a promising route for sustainable energy recovery. However, practical deployment is limited by the difficulty in simultaneously optimizing electrical and thermal transport properties. In this study, a synergistic microstructure-composition co-design strategy for enhancing the performance of PbTe-based TEs via Na 2 S-assisted solid-state synthesis is presented. The thermal decomposition of Na 2 S not only introduces hierarchical porosity but also facilitates initial Na doping, enabling the concurrent optimization of phonon scattering, carrier concentration, and band convergence. The optimized composition, Pb 0.97 Na 0.03 Te-1.0%Na 2 S, exhibits refined grains, dispersed Na 2 Te nanoprecipitates, and a high density of dislocations, leading to ultralow lattice thermal conductivity (≈0.50 W m −1 K −1 at 750 K) while preserving excellent electrical transport. A peak TE figure of merit zT ≈2.2 at 823 K and a high average zT ≈1.9 across 623–823 K are achieved. To validate the device-level applicability, single-leg TE modules are fabricated, achieving a high conversion efficiency of 13.4% at Δ T = 395 K, which is among the best reported for a PbTe-based system. Furthermore, a unicouple module integrated with n-type skutterudite reaches a record power density of 2.2 W cm −2 at Δ T = 375 K. This study highlights a scalable pathway for advancing mid-temperature TE materials and devices through structural and compositional engineering.
研究领域:
材料科学
·
热电学
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固态化学
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能量转换
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纳米材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TETRAHEDRON
·
2015
·
IF 2.641
Bo Liu,Ning Zhu,Hailong Hong,Limin Han
A novel methodology for the preparation of benzothiazole derivatives via the reaction of ortho -anilino disulfides with aryl and heteroaryl aldehydes catalyzed by Na 2 S·9H 2 O has been developed. The reaction mechanism was investigated by LC–MS and 1 H NMR. The disulfide was cleaved firstly by the interchange reaction of the disulfide and metal sulfide , and the resulting thiol reacted in situ with the aldehyde to form the corresponding benzothiazoline. Subsequently, the intermediate benzothiazoline reduced the disulfide to thiol and it was oxidized to benzothiazole. The excess benzothiazoline was oxidized by air and both halves of the disulfide were ultimately converted to the desired benzothiazole.
研究领域:
有机化学
·
药物化学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 14
·1703369
·
IF 13.325
Youchen Gu,Heping Shen,Chen Ye,Xuezeng Dai,Qian Cui,Jianbao Li,Feng Hao,Xiaojing Hao,Hong Lin
The thin-film photovoltaic material Cu 2 ZnSnS 4 (CZTS) has drawn worldwide attention in recent years due to its earth-abundant, nontoxic element constitution, and remarkable photovoltaic performance. Although state-of-the-art power conversion efficiency is achieved by hydrazine-based methods, effort to fabricate such devices in a high throughput, environmental-friendly way is still highlydesired. Here a hydrazine-free all-solution-processed CZTS solar cell with Na 2 S self-depleted back contact modification layer for the first time is demonstrated, using a ball-milled CZTS as light absorber, low-temperature solution-processed ZnO electron-transport layer as well as silver-nanowire transparent electrode. The inserting of Na 2 S self-depleted layer is proven to effectively stabilize the CZTS/Mo interface by eliminating a detrimental phase segregation reaction between CZTS and Mo-coated soda lime glass, thus leading to a better crystallinity of CZTS light absorbing layer, enhanced carrier transportation at CZTS/Mo interface as well as a smaller series resistance. Furthermore, the self-depletion feature of the Na 2 S modification layer also averts hole-transportation barrier within the devices. The results show the vital importance of interfacial engineering for these CZST devices and the Na 2 S interface layer can be extended to other optoelectronic devices using Mo contact.
研究领域:
材料科学
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
JOM
·
2022
·Vol. 74
·期 5
·1889-1899
·
IF 2.597
Zhu Qiang,Yang Jianguang,Tang Chaobo,Nan Tianxiang,Ding Ruize,Liu Jiang
This work proposes a novel nitrogen bottom-blowing method to enhance mass transfer in the molten salt electrolysis process, improve current efficiency, and reduce electrolysis energy consumption. The effect of nitrogen agitation on the dissolution of Sb 2 S 3 and Sb was studied. The effects of nitrogen flow rate, electrolytic temperature, cell voltage, and pole spacing on the distribution behavior of Sb during constant piezoelectric reduction were investigated. The results show that nitrogen agitation can obviously accelerate the dissolution of Sb 2 S 3 . The current efficiency of the cathode reaches 92.76%, the energy consumption is 1.78 kWh kg −1 , and the grade of crude antimony is 98.5%. Compared to no nitrogen stirring, electrolytic current efficiency is improved by 19.87% and the energy consumption is saved by 20.89%. Furthermore, the appropriate flow rate of nitrogen accelerates the removal of sulfur from the reactor and avoids the formation of high-priced antimony compounds.
研究领域:
冶金学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Hao Sun,Danyan Xie,Zhen Song,Chuanhui Liang,Lingbo Xu,Xianlin Qu,Yuxin Yao,Deng Li,Hang Zhai,Kun Zheng,Can Cui,Yiying Zhao
Numerous trap states and low conductivity of compact TiO2 layers are major obstacles for achieving high power conversion efficiency and high-stability perovskite solar cells. Here we report an effective Na2S-doped TiO2 layer, which can improve the conductivity of TiO2 layers, the contact of the TiO2/perovskite interface, and the crystallinity of perovskite layers. Comprehensive investigations demonstrate that Na cations increase the conductivity of TiO2 layers while S anions change the wettability of TiO2 layers, thus improving the crystallinity of perovskite layers and passivate defects at the TiO2/PVK interface. The synergetic effects of dopants lead to a champion efficiency as high as 21.25% in unencapsulated perovskite solar cells (PSCs), with much-improved stability. Our work provides new insights on anion dopants in TiO2 layers, which is usually neglected in previous reports, and also proposes a simple approach to produce low-cost and high-performance electron transport layers for high-performance PSCs.
研究领域:
光伏学
·
材料科学
·
纳米技术
·
能源材料
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Yufen Yan,Yayu Guo,Huadong Zheng,Liang Qi,Yutao Yang,Yanli Miao,Xixi Shi,Lianqi Zhang,Chunliang Li,Dawei Song
Development of sulfide solid-state electrolytes (SSEs) with high ionic conductivity plays a leading role in achieving all-solid-state sodium batteries (ASSSBs). As an important raw material for synthesizing sulfide SSEs, the purity of Na 2 S significantly affects the ionic conductivity and electrochemical properties of sulfide SSEs. In order to obtain high-purity and low-cost Na 2 S, a hydrogen reduction of industrial grade Na 2 SO 4 followed by ethanol purification has been successfully employed to synthesize and purify Na 2 S, which possesses a high purity of 98 %. Na 3 SbS 4 has been synthesized by as-synthesized Na 2 S (A-Na 2 S) and commercial Na 2 S (C–Na 2 S) by liquid-phase synthesis and solid-state reaction methods, respectively. The electrochemical properties indicate that Na 3 SbS 4 samples synthesized by A-Na 2 S possess higher ionic conductivity and lower Ea, and the assembled ASSSBs exhibit higher specific capacities, superior cycle and rate performance. At 0.5C, the assembled TiS 2 /Na 3 SbS 4 /NaSn ASSSB exhibits a high initial capacity of 211.4 mAh g −1 with capacity retention of 96.2 % after 360 cycles at room temperature. This work provides a simple approach for synthesizing high-purity Na 2 S at low cost, enabling the large-scale application of sulfide SSEs for ASSSBs.
研究领域:
材料科学
·
电化学
·
固态离子学
·
能源存储
·
无机合成
·
电池技术
✓ 已验证
DOI
高影响因子
ACS ES&T Engineering
·
2022
·
IF 0
Lei Li,Qi Xu,Shaolin Li,Wei-xian Zhang
Herein, a critical problem regarding the milling of zerovalent iron (ZVI) to produce fine ZVI particles is solved. During milling, ZVI is prone to be rapidly oxidized by oxygen, water, and other potential oxidants in the milling environment, which results in significant metallic iron (Fe(0)) loss and raises safety concerns. In this work, a sulfide solution (using Na2S) is introduced as the milling solvent; as benchmarks, ZVI milling under a pure aqueous solution (ZVI(W)) and organic solvents (pure ethanol, ZVI(E)) is also investigated. Produced ZVIs are characterized with six different techniques to assess their Fe(0) content, safety, reactivity, and reductive capacity. The obtained results show that the sulfide solution is effective in minimizing Fe(0) oxidation during milling; the Fe(0) content (∼63%, w/w) of ZVI milled in sulfide solution (ZVI(S)) is more than 10 times that of ZVI(W) after 5 h of milling. ZVI(S) is comparable to ZVI(E) in their Fe(0) contents, reductive reactivity, and capacity, but ZVI(S) is more stable and safer in use; an optimal Na2S concentration of 10 g Na2S/L is recommended. A mechanistic study shows that Fe(0) preservation in a sulfide solution results from a combined effect of the alkaline pH of the solution and the coating of iron sulfides on ZVI. This exploratory study demonstrates an original milling solution for a highly scalable, economical, and safe scheme to produce ultrafine and reactive ZVI with a high Fe(0) content for environmental applications.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
WATER RESEARCH
·
2022
·
IF 13.4
Shuangjie Xiao,Zilan Jin,Haoran Dong,Junyang Xiao,Yangju Li,Long Li,Rui Li,Jie Chen,Ran Tian,Qianqian Xie
There are plentiful ways to synthesize sulfidized nanoscale zerovalent iron (S-nZVI), and this study investigated the influence of sulfur reagents (Na 2 S, Na 2 S 2 O 3 , Na 2 S 2 O 4 ) and sulfidation sequence (co-sulfidation and post-sulfidation method) on the physicochemical properties, reactivity, and long-term performance of S-nZVI in simulated groundwater. The results suggested that the co-sulfidized nZVI (S-nZVI co ) has higher reactivity (∼2-fold) than S-nZVI post due to the stronger electron transfer capacity, deriving from the higher content of Fe 0 and reductive sulfur species. However, during aging, the reactivity of S-nZVI co would be lost more rapidly than S-nZVI post , due to the faster corrosion of Fe 0 and more oxidation of reductive sulfur species. S-nZVI post has the superior long-term performance with the degradation rate of trichloroethylene (TCE) remained at 30%∼60% even after 90 d of aging. Sulfur precursors can control the selectivity of S-nZVI by affecting the sulfur speciation on the particle surface. The proportion of reductive sulfur species on S-nZVI post synthesized by Na 2 S was higher than S-nZVI post synthesized by Na 2 S 2 O 3 or Na 2 S 2 O 4 , resulting in a higher selectivity of the former S-nZVI post than the latter S-nZVI post . In addition, sulfidation procedures and sulfur precursors did not affect the degradation pathway of TCE. Nevertheless, the degradation product distribution can be affected by the different physicochemical transformation of various types of S-nZVI with the aging time. These results indicated that sulfur reagents and sulfidation procedures have crucial effects on the reactivity and long-term performance of S-nZVI, which can be designed for the specific application scenarios.
研究领域:
环境科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2022
·
IF 2.799
Yu Zhang,Yun Jia,Yaoguo Huang,Linlin Chen,Ming Wang,Yali Zhang
In this study, thioacetamide (TAA) was used as the precipitant to selectively precipitate Cu2+, Cd2+, and Pb2+ in acidic solution. The effect of temperature, time, and pH conditions on the selective precipitation of metal ions were investigated. Meanwhile, the thermodynamic process of single metal precipitation was studied by Avrami equation. By continuously and accurately controlling pH, Cu2+, Cd2+, and Pb2+ were successfully precipitated at pH 2.5, 4.0, and 6.5, respectively. Traditional inorganic sulfide precipitator Na2S was also used to compare with TAA under the same conditions, and the results showed that compared with Na2S, TAA could be better to achieve the goal of selective precipitation of Cu2+, Cd2+, and Pb2+. The metal sulfide precipitation was measured by field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD).
研究领域:
环境化学
·
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2023
·Vol. 25
·期 3
·1157-1168
·
IF 9.8
Yu Jin,Zhengxiang Wang,Chengcheng Hu,Jie Wang,Kangle Yan,Juan He,Zhong Wang,Zhongkai Wang,Liang Yuan
Epoxy resins are among the best performing adhesives. Recovering the adhesively joined parts for repetitive use demands innovative bonding strategies to afford facile debonding while not sacrificing the adhesion performance. Here, a series of hardeners were prepared by reacting elemental sulfur with renewable 10-undecenoic acid and further employed for curing diglycidyl ether of bisphenol-A (DGEBA). Dynamically cross-linked epoxy networks from this solvent- and catalyst-free procedure exhibit high tensile strength and toughness, which are well maintained during repetitive thermal processing, assisted by exchanges of the S–S bonds and β-hydroxyl ester moieties. Moreover, the toughened epoxy resins show a high adhesion strength of up to 31 MPa for steel plates. Furthermore, the joined plates can be readily separated by immersing in a methanol solution of Na2S or hexylamine without any residual resins.
研究领域:
材料科学
·
化学工程
·
粘合技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）