DESALINATION
·
2023
·
IF 9.9
Shabab Hussain,Zhizhen Ye,Xinsheng Peng
Organically modified polyamide (PA) selective layer, with ultrahigh perm-selectivity and good interfacial compatibility with the porous support of the ion-sieving membranes, has great importance in the advanced separation of ions. Herein, we report the synthesis of 1,4-butane sultone (BS) integrated polyamide “BS@PA” selective layer via conventional interfacial polymerization (IP). The grafted BS makes the BS@PA selective layer superhydrophilic and highly negatively charged, ultimately increases the membrane water/salt separation properties. While osmotic-driven ionic-separation, the BS@PA membrane exhibits a high water permeability of 36.9 and 79.8 mol·m −2 ·h −1 ·bar −1 with NaCl and MgCl 2 salts reverse permeation rates of 6.5 × 10 −3 and 1.8 × 10 −3 mol·m −2 ·h −1 ·bar −1 , respectively. As compared to blank PA membrane (control membrane), the BS@PA membrane demonstrates higher water permeation rates with extremely low salt/ion permeation leakage , exhibiting upper-bound water/salt, ion selectivity . The outperformed ion-separation of BS@PA membrane is ascribed to the superhydrophilic and highly negatively charged PA selective layer. This study provides a facile one-step interfacial polymerized BS integrated PA selective layer for the typical osmotically/pressure-driven ion-separation membranes to overcome conventional permeance/selectivity tradeoff of the membranes.
研究领域:
材料科学
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化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Materials
·
2020
·
IF 2.705
Li Xinxi,Liu Long,Li Shumin,Guo Lin,Li Bin,Zhang Guoqing
Spinel lithium manganese oxide (LiMn2O4) based Li-ion battery (LIB) is attractive for hybrid/full electric vehicles because of its abundant resources and easy preparation. However, operation under an elevated temperature could cause severe capacity fading of the spinel cathodes. In this work, 1, 3-propane sultone (PS) is investigated as an electrolyte additive for improving the cyclability of the LiMn2O4/graphite LIB at elevated temperature. The charge and discharge measurement proves that PS can significantly enhance the cyclability of 053048-type LiMn2O4/graphite pouch cell at 60°C. Compared to the cell without additive, the capacity retention of the cell using electrolyte with 5% PS increases from 52 to 71% after 180 cycles. The improved cyclability is attributable to the modification of the solid electrolyte interface (SEI) on both positive and negative sides of the LiMn2O4/graphite cell by PS, which effectively prevents anode and cathode from structural breakdown and inhibits the electrolyte decomposition.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2021
·Vol. 8
·期 13
·2534-2544
·
IF 4.59
Lengdan Zhang,Xiaoxi Zuo,Tianming Zhu,Wenping Lei,Dongming Xie,Jiansheng Liu,Xin Xiao,Xinli Chen,Junmin Nan
Graphical The role performed by the tetrafluoroethane beta-sultone (TFBS) additive for improving the electrochemical properties of LiCoO 2 /graphite pouch cells at higher charging cutoff voltage (4.5 V) is raised. The energy density of lithium cobalt oxide (LiCoO 2 )-based cells can be increased by charging at voltages above 4.2 V. However, the poor interface stability of the cathode/electrolyte deriving from the continuous severe decomposition of the electrolyte on the cathode/electrolyte surface and the instability of the structure of the cathode at high-voltage operation limits their wider commercial application. Herein, a new fluoro-functionalized electrolyte additive, tetrafluoroethane beta-sultone (TFBS), is used for promoting the electrochemical performance of LiCoO 2 -based cells. Upon cycling between 3.0 and 4.5 V (vs. Li/Li + ) with 0.5 C (1 C=274.4 mAh/g), it is shown that the capacity retention of the LiCoO 2 /graphite pouch-cell with TFBS-controlled electrolyte reaches 96.8 % (183.9 mAh g −1 ), yet it is 66.5 % (126.3 mAh g −1 ) for the pouch-cell without TFBS in baseline electrolyte at the 100 th cycle. All the results indicate that TFBS can be decomposed prior to the solvents in the electrolyte and can then form low-resistance, high-conductivity interface layers on the surfaces of the cathode-electrolyte and the anode-electrolyte, respectively, thus improving the cycling stability of the cells at a high charging cutoff voltage (4.5 V).
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Qinlan Luo,Bohak Yoon,Hongxia Gao,Juan Lv,Gyeong S. Hwang,Min Xiao,Zhiwu Liang
To reduce the regeneration energy consumption for CO 2 capture, an advanced monoethanolamine (MEA) + 2-(ethylamino)ethanol (EAE) + sulfolane biphasic aqueous solution was developed, and the phase separation mechanism was explored. The effects of the concentration ratio on the phase separation behavior, CO 2 absorption performance, CO 2 loading at the phase separation point, and CO 2 desorption performance of MEA + EAE + sulfolane solutions were investigated comprehensively in experiments. The 3 M MEA + 2 M EAE + 5 M sulfolane showed the best properties with a large CO 2 loading of 0.32 mol/mol at the phase separation point and the relative low regeneration energy consumption, which is comparable to 5 M MEA in absorption with an improved desorption performance. The molecular mechanism of phase separation was revealed by molecular dynamics simulations, illustrating that strong hydrogen bonding between amine products and water and enhanced intermolecular interaction among amine products, would promote an aggregation of amine products. This study provides a promising candidate for energy-efficient CO 2 capture with molecular insights into a liquid–liquid phase separation.
研究领域:
化学工程
·
环境科学
·
计算化学
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2024
·
IF 9.7
Jishao Jiang,Rui Hou,Huilin Cui,Zhuyu Tang,Yousif Abdelrahman Yousif Abdellah,Caspar C.C. Chater,Ke Cheng,Fuqiang Yu,Dong Liu
This study surveyed the fates of artificial sweeteners in influent, effluent, and sewage sludge (SS) in wastewater treatment plant, and investigated the effects of Micro-Kaolin (Micro-KL) and Nano-Kaolin (Nano-KL) on nitrogen transformation and sucralose (SUC) and acesulfame (ACE) degradation during SS composting. Results showed the cumulative rate of ACE and SUC in SS was ∼76 %. During SS composting, kaolin reduced NH 3 emissions by 30.2–45.38 %, and N 2 O emissions by 38.4–38.9 %, while the Micro-KL and Nano-KL reduced nitrogen losses by 14.8 % and 12.5 %, respectively. Meanwhile, Micro-KL and Nano-KL increased ACE degradation by 76.8 % and 84.2 %, and SUC degradation by 75.3 % and 77.7 %, and significantly shifted microbial community structure. Furthermore, kaolin caused a positive association between Actinobacteria and sweetener degradation. Taken together, kaolin effectively inhibited nitrogen loss and promoted the degradation of ACE and SUC during the SS composting, which is of great significance for the removal of emerging organic pollutants in SS.
研究领域:
环境工程
·
废物管理
·
微生物学
✓ 已验证
DOI
PubMed
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2012
·
IF 4.859
Bin Li,Mengqing Xu,Tiantian Li,Weishan Li,Shejun Hu
In this paper, we reported a novel solid electrolyte interphase (SEI) formation additive, prop-1-ene-1,3-sultone (PES), used in propylene carbonate (PC)-based electrolyte for lithium ion batteries . The effect of PES on the co-intercalation of PC into anode and the battery performance was investigated by energy calculation, cyclic voltammetry and battery charge–discharge test. The theoretical calculations and the voltammograms show that PES can be reduced prior to propane sultone (PS), a practical SEI formation additive for lithium ion batteries. Charge–discharge test shows that the use of PES can suppress successfully the co-intercalation of PC with lithium ions into graphite and the LiCoO 2 /graphite battery using PES exhibits better performance than that using PS as the SEI formation additive.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2020
·
IF 7.183
Chenxu Zhang,Congcong Yin,Yanjie Wang,Jiemei Zhou,Yong Wang
Membranes with zwitterionic surfaces are highly desired in water-based separations for their distinguished fouling resistance. Herein, a facile strategy for the preparation of zwitterion-functionalized membranes is developed by coupling the pore-making and zwitterion functionalization in one step. We soaked thin films of poly (2-dimethylaminoethyl methacrylate)- block -polystyrene (PDMAEMA- b -PS) in the mixture of ethanol and 1, 3-propanesultone (1, 3-PPST). In this mixture, PDMAEMA microdomains were selective swollen leading to nanoporous structures with PDMAEMA chains enriched on the surface. Simultaneously, the quaternization reaction between PDMAEMA and 1, 3-PPST took place. Unexpectedly, in addition to function as the zwitterionic agent, 1, 3-PPST also contributed to the selective swelling induced pore generation. It was found that the presence of 1, 3-PPST in ethanol slowed down the swelling process at the early stage, but evidently enhanced the swelling of PDMAEMA- b -PS films in longer duration. Thus-prepared zwitterion-functionalized membranes exhibited several times higher water permeance than non-zwitterionized counterparts, which should be attributed to increased pore size and strongly improved hydrophilicity as a result of zwitterion functionalization. Moreover, the membranes showed exceptional fouling resistance because of the presence of zwitterions.
研究领域:
材料科学
·
化学工程
·
环境工程
✓ 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）