Journal of the American Chemical Society
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2013
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IF 10.677
Yu Zou,Xiong Su,Jiang Jiang
Cu2ZnSnS4 (CZTS) nanocrystals with different morphologies and phases have been synthesized in hot organic solvents such as dodecanethiol and oleylamine. The crystallographic phases could be controlled by the sulfur precursor and the ligand species of the metal salts used for the synthesis. When a highly reactive sulfur precursor and metal acetates were used, wurtzite CZTS nanocrystals were obtained. On the other hand, using a low-reactivity sulfur precursor or metal chlorides produced CZTS nanocrystals in a kesterite phase. The experimental results from systematic investigations indicated that the reaction rate between Zn and S precursors played a determining role for the growth of CZTS nanocrystals with different crystalline phases. A relatively faster reaction between Zn and S precursors in comparison to the Sn–S reaction favored the formation of a metastable wurtzite phase, which could be accelerated by increasing the reactivity of the S precursor. This work provided a safe and economical way to synthesize high-quality phase-controlled Cu2ZnSnS4 nanocrystals, especially wurtzite nanorods, for potential photovoltaic applications. Moreover, preliminary results show that the proposed mechanism also applies to the phase-controlled synthesis of other quaternary Cu2MSnS4 (M = Cd2+, Mn2+) nanocrystals.
研究领域:
材料科学
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化学工程
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纳米技术
✓ 已验证
DOI
PubMed
高影响因子
CATALYSIS COMMUNICATIONS
·
2016
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IF 3.389
Dapeng Liu,Anjie Wang,Chenguang Liu,Roel Prins
Bulk Ni 2 P and Al 2 O 3 -supported Ni 2 P were prepared at low phosphidation temperature (300 °C) from Ni 9 S 8 and NH 4 H 2 PO 2 , which were separated to avoid the formation of phosphate inside the support pores. The unsupported product phases were characterized by XRD and the Ni 2 P/Al 2 O 3 catalysts by XRD, BET and TEM. A 10 wt.% Ni 2 P/Al 2 O 3 catalyst, made by the Ni(NO 3 ) 2 –NiO–Ni 9 S 8 –Ni 2 P path at a P/Ni ratio of 3, showed the highest activity in the hydrodesulfurization of dibenzothiophene. By separating the nickel and hypophosphite sources, Ni 2 P/Al 2 O 3 catalysts could be obtained at low phosphidation temperature and with low degree of blockage of pores by surplus phosphorus.
研究领域:
催化化学
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材料科学
✓ 已验证
DOI
高影响因子
NATURE
·
2025
·Vol. 637
·期 8047
·846-853
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IF 48.5
Song Huimin,Münch Konrad,Liu Xu,Shen Kaier,Zhang Ruizhuo,Weintraut Timo,Yusim Yuriy,Jiang Dequan,Hong Xufeng,Meng Jiashen,Liu Yatao,He Mengxue,Li Yitao,Henkel Philip,Brezesinski Torsten,Janek Jürgen,Pang Quanquan
With promises for high specific energy, high safety and low cost, the all-solid-state lithium–sulfur battery (ASSLSB) is ideal for next-generation energy storage 1 , 2 , 3 , 4 , 5 . However, the poor rate performance and short cycle life caused by the sluggish solid–solid sulfur redox reaction (SSSRR) at the three-phase boundaries remain to be solved. Here we demonstrate a fast SSSRR enabled by lithium thioborophosphate iodide (LBPSI) glass-phase solid electrolytes (GSEs). On the basis of the reversible redox between I − and I 2 /I 3 − , the solid electrolyte (SE)—as well as serving as a superionic conductor—functions as a surficial redox mediator that facilitates the sluggish reactions at the solid–solid two-phase boundaries, thereby substantially increasing the density of active sites. Through this mechanism, the ASSLSB exhibits ultrafast charging capability, showing a high specific capacity of 1,497 mAh g −1 sulfur on charging at 2C (30 °C), while still maintaining 784 mAh g −1 sulfur at 20C. Notably, a specific capacity of 432 mAh g −1 sulfur is achieved on charging at an extreme rate of 150C at 60 °C. Furthermore, the cell demonstrates superior cycling stability over 25,000 cycles with 80.2% capacity retention at 5C (25 °C). We expect that our work on redox-mediated SSSRR will pave the way for developing advanced ASSLSBs that are high energy and safe.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2019
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IF 3.683
Yilan Jiang,Long Yuan,Yanyan Xu,Jiaojiao Ma,Yu Sun,Xia Gao,Keke Huang,Shouhua Feng
The synthesis of intermetallic antimonides usually depends on either the high-temperature alloying technique from high-purity metals or the flux method in highly poisonous Pb-melt. In this paper, we introduced a soft-chemical method to synthesize intermetallic antimonides from ternary chalcogenide precursors under an argon atmosphere below 200 °C. Powder X-ray diffraction and compositional analysis clearly indicate that a new phase of the Ag3Sb nanocrystal was synthesized from the Ag3SbS3 precursors. Three types of trialkylphosphines (TAPs) were applied as desulfurization agents, and the transformation mechanism was elucidated. The capability of the desulfurization agent follows the sequence of triphenylphosphine (TPP) > tributylphosphine (TBP) > trioctylphosphine (TOP). Besides, this TAP-driven desulfurization route to synthesize the intermetallic phase could also be possible for AgSbSe2 and Sb2S3. Therefore, this paper provides an efficient and mild technique for the fabrication of intermetallic nanocrystals.
研究领域:
材料科学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2023
·
IF 5.9
Yanpeng Wu,Tonghui Yang,Yongchang Cheng,Tao Huang,Bin Yu,Qilin Wu,Meifang Zhu,Hao Yu
A sulfur- and phosphorus-containing flame retardant monomer phosphonic diamide, P-phenyl-N, N′-bis(p-sulfanilylphenyl) (PDDDS) was designed, synthesized, and incorporated into polyamide 66 (PA66) through polycondensation to suppress smoke generation upon combustion and achieve satisfactory mechanical properties, a good UL-94 rating (V-0), and a high limiting oxygen index (31.6%). The increased flame retardancy of the PA66-PDDDS copolymer was ascribed to its decomposition into (i) gas-phase P–O and SO 2 species scavenging free radicals such as H• and OH• and (ii) condensed-phase products catalyzing the dehydration of PA66 to form char layer. Thus, our work presents a strategy for improving the fire safety of PA66 to significantly expand its practical application value.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·Vol. 37
·期 38
·2507308
·
IF 26.8
Qiang Li,Chenxiang Xie,Xin Jiang,Chuannan Geng,Zhonghao Hu,Huilin Ge,Jiwei Shi,Li Wang,Wei Lv,Quan-Hong Yang
All-solid-state lithium-sulfur batteries (ASSLSBs) have garnered significant research interest due to their inherent safety and high energy density. Nevertheless, their practical applications remain constrained by the sluggish sulfur reaction kinetics. While catalytic strategies have been demonstrated to facilitate sulfur conversion, their efficacy is fundamentally constrained by the lack of interfacial continuity. Thus, there is an urgent need for interfacial fusion to achieve such continuity and construct efficient catalytic interfaces. In this work, an amorphous interfacial fusion strategy using TiS 2 as a catalytic “solder”, enabling intimate integration among sulfur, the catalyst, and the solid-state electrolyte is proposed. Upon reacting with sulfur and the sulfide-based solid electrolyte, TiS 2 induces the in situ formation of amorphous TiS 4 and Li-Ti-P-S-Cl interfacial phases. These amorphous phases facilitate interfacial “soldering”, creating integrated catalytic interfaces that enhance Li + transport and catalytic efficiency. As a result, the optimized ASSLSBs show a reversible specific capacity of 720 mAh g −1 after 2000 cycles at 1 C. It also delivers a high areal capacity of 7.05 mAh cm −2 at a sulfur loading of 4.0 mg cm −2 . This interfacial fusion strategy offers a promising pathway toward the practical development of high-performance ASSLSBs.
研究领域:
材料科学
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储能
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电化学
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电池技术
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纳米材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Meng Jiashen,Hong Xufeng,Xiao Zhitong,Xu Linhan,Zhu Lujun,Jia Yongfeng,Liu Fang,Mai Liqiang,Pang Quanquan
Molten salt aluminum-sulfur batteries are based exclusively on resourcefully sustainable materials, and are promising for large-scale energy storage owed to their high-rate capability and moderate energy density; but the operating temperature is still high, prohibiting their applications. Here we report a rapid-charging aluminium-sulfur battery operated at a sub-water-boiling temperature of 85 °C with a tamed quaternary molten salt electrolyte. The quaternary alkali chloroaluminate melt – possessing abundant electrochemically active high-order Al-Cl clusters and yet exhibiting a low melting point – facilitates fast Al 3+ desolvation. A nitrogen-functionalized porous carbon further mediates the sulfur reaction, enabling the battery with rapid-charging capability and excellent cycling stability with 85.4% capacity retention over 1400 cycles at a charging rate of 1 C. Importantly, we demonstrate that the asymmetric sulfur reaction mechanism that involves formation of polysulfide intermediates, as revealed by operando X-ray absorption spectroscopy, accounts for the high reaction kinetics at such temperature wherein the thermal management can be greatly simplified by using water as the heating media.
研究领域:
能源存储
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电池技术
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材料科学
·
电化学
✓ 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）