ACS Nano
·
2023
·
IF 17.1
Tingting Wei,Yingke Ren,Yifan Wang,Li’e Mo,Zhaoqian Li,Hong Zhang,Linhua Hu,Guozhong Cao
The reversibility and cyclability of aqueous zinc-ion batteries (ZIBs) are largely determined by the stabilization of the Zn anode. Therefore, a stable anode/electrolyte interface capable of inhibiting dendrites and side reactions is crucial for high-performing ZIBs. In this study, we investigated the adsorption of 1,4-dioxane (DX) to promote the exposure of Zn (002) facets and prevent dendrite growth. DX appears to reside at the interface and suppress the detrimental side reactions. ZIBs with the addition of DX demonstrated a long-term cycling stability of 1000 h in harsh conditions of 10 mA cm–2 with an ultrahigh cumulative plated capacity of 5 Ah cm–2 and shows a good reversibility with an average Coulombic efficiency of 99.7%. The Zn//NH4V4O10 full battery with DX achieves a high specific capacity (202 mAh g–1 at 5 A g–1) and capacity retention (90.6% after 5000 cycles), much better than that of ZIBs with the pristine ZnSO4 electrolyte. By selectively adjusting the Zn2+ deposition rate on the crystal facets with adsorbed molecules, this work provides a promising modulation strategy at the molecular level for high-performing Zn anodes and can potentially be applied to other metal anodes suffering from instability and irreversibility.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Yu Lang,Jingjie Zhou,Jinyuan Sun,Huibin Liang,Ke Zhang,Chunyu Wang,Yuqi Liu,Tao Geng
Surfactant reduces the surface tension of liquids, resulting in improved emulsion stability, and there is great interest in pesticide additives. Ethoxylate is often used as a pesticide emulsifier. However, the degree of ethoxylation and the existence of dioxane byproducts can significantly affect the performance of emulsifiers. Here, a series of polyoxyethylene tallow amines with the addition of different numbers of ethylene oxide (EO) were synthesized and characterized. Their physical and chemical performances were measured. The ability of POEA as a surfactant to reduce water surface tension and the surface adsorption of molecules were assessed based on the static and dynamic surface tensions. The results show that the surfactant molecules preferentially form a saturated adsorption layer in solution, and the mixed-diffusion-kinetics mechanism dominates the adsorption process. With the increase of the EO addition number, the emulsifying property of POEA increases, while the wetting property gradually decreases and the contact angle increases. These results can provide a basis for the selection of pesticide additives. At the same time, the mechanism of removing dioxane by ethoxylate is described, and a simple and low-consumption method is put forward to reduce the dioxane content. It provides a new idea for the removal of dioxane.
研究领域:
农药科学
·
表面化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Xing-Ya Ni,Xiao-Fang Lv,Rong-Qiang Zhong,Yang Liu,Chuan-Shuo Wang,Qian-Li Ma,Yan-Yun Xiao,Shi-Dong Zhou,Shang-Fei Song
The mixed gas separation of hydrate technology can promote biogas separation, purify CO2, and improve the quality of CH4 while reducing carbon emissions and realizing efficient CO2 capture and storage. Herein, we identified the effects of low-content 1,3-dioxolane (DIOX) on the separation efficiency and kinetics of a CH4/CO2 (6:4) mixture via gas hydrates. The experimental results showed that the hydrate formation with DIOX had five stages. The purification rate of CH4 could be effectively accelerated with the increase in DIOX concentrations. At 4.5 MPa and 274.65 K, the induction time of hydrate formation could be reduced by 93.3% compared to that of the pure water system. However, higher driving forces could lead to dense hydrate film and reduce the separation efficiency of CO2/CH4. The suitable pressure and temperature (e.g., 4 MPa, 274.65 K) could alleviate this problem, and it could result in a CO2 recovery of 92.2%. When the gas–liquid ratio was 3.5, the CO2 recovery could be increased by 23% and the CO2 phase equilibrium constant could be increased by 2.8 times compared to that of the pure water system.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Pharmaceutics
·
2019
·Vol. 11
·期 5
·214
·
IF 4.773
Qing Min,Xiaofeng Yu,Jiaoyan Liu,Jiliang Wu,Ying Wan
Chitosan(CH)-poly(dioxanone) (CH-PDO) copolymers containing varied amounts of PDO and having free amino groups at their CH backbone were synthesized using a group protection method. The selected CH-PDO with soluble characteristics in aqueous media was used together with hyaluronic acid (HA) to prepare HA/CH-PDO polyelectrolyte complex nanoparticles (NPs) via an ionotropic gelation technique, and such a type of HA/CH-PDO NPs was employed as a carrier for delivering bone morphogenetic protein-2 (BMP-2). The optimal BMP-2-encapsulated HA/CH-PDO NPs with high encapsulation efficiency were embedded into CH/glycerophosphate composite solutions to form different hydrogels in order to achieve long-term BMP-2 release. The formulated gels were found to be injectable at room temperature and had its thermosensitive phase transition near physiological temperature and pH. They also showed abilities to administer the release of BMP-2 in approximately linear manners for a few weeks while effectively preserving the bioactivity of the encapsulated BMP-2. In view of their fully biocompatible and biodegradable components, the presently developed gel systems have promising potential for translation to the clinic use in bone repair and regeneration where the sustained and controlled stimuli from active signaling molecules and the stable biomechanical framework for housing the recruited cells are often concurrently needed.Keywords:chitosan;hyaluronic acid;nanoparticles;hydrogel;bone morphogenetic protein-2
研究领域:
生物材料
·
组织工程
·
药物递送系统
·
骨修复与再生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2024
·
IF 24.4
Jixiao Li,Chunyue Li,Yutong Yao,Zhangling Li,Jiaozhi Yao,Lingpeng Luo,Weili Liao,Xing Ye,Wenming Dai,Fei Li,Xiaokun Zhang,Yong Xiang
The construction of poly-dioxolane (PDOL) solid-state electrolytes by in situ polymerization is an effective way to achieve high performance lithium-metal batteries. However, the poor electrochemical stability and safety issues of linear PDOL limit their further application. In this work, a multifunctional crosslinker has been introduced to construct a flame retardant crosslinked quasi solid-state electrolyte (FCDOL). Due to the synergistic effect of the crosslinked network, the prepared FCDOL achieves excellent room temperature ionic conductivity (0.72 mS cm −1 ), high Li + transference number (0.655), wide electrochemical stabilization window (4.8 V vs Li/Li + ), and impressive performance when matched with lithium metal anodes (>4000 h plating/stripping) and high-voltage cathodes, and the corresponding pouch cells can withstand abusive tests such as bending and cutting, encouraging that in situ polymerization of SPEs provides new insights into high-energy density and high-safety solid-state batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 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）