Journal of Renewable Materials
·
2022
·
IF 2.115
Jianjun Guo,Lingling Jia,Sandra Senyo Fometu,Qiang Ma,Jinjin Wang,Hang Li,Lei Jiang,Guohua Wu
Traditionally, silkworm silk has been used to make high-quality textiles. Nevertheless, various wastes from silkworm silk textiles that are no longer used are increasing, which is also causing considerable waste and contamination. This issue is causing widespread concern in countries that use more silk. Regenerated silk fibroin (RSF) fibers have been shown to be fragile and tender, which prohibits RSF from being widely used as a structural component. Therefore, enriching the function of silk and enhancing the RSF mechanical properties are important directions to expand the comprehensive utilization of silk products. In the present research, wet spinning was used to create a series of RSF/tungsten disulfide (WS 2 ) nanoparticles (NPs) hybrid fiber having distinct WS 2 nanoparticles concentrations. It was discovered that the temperature of hybrid fibers containing 0.8 wt% RSF/WS 2 nanoparticles might climb from 20.4°C to 85.6°C in 1 min and 108.3°C in 10 min after being exposed to simulated sunlight for a period of one minute and ten minutes. It also had certain antibacterial activity and thermal stability. Fabrics created by hand mixing had outstanding photothermal characteristics under natural sunlight. Furthermore, adding WS 2 nanoparticles might increase the tensile properties of hybrid fibers, which could be caused by the reality that the blending of WS 2 nanoparticles inhibited the self-assembly of β-sheets in RSF reaction mixture in a dosage-dependent way, as evidenced by the fact that RSF/WS 2 nanoparticles hybrid fibers had lesser β-sheets material, crystalline nature, and crystalline size. The above performance makes the RSF/WS 2 nanoparticles hybrid fibers promising candidates for application in photothermal fabrics as well as military clothing.
研究领域:
材料科学
·
纺织工程
·
高分子物理
·
纳米复合材料
·
光热转换
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 34
·18966-18971
·
IF 2.936
Zhiwei Lu,Yujuan Chen,Zhaoen Liu,Aoqi Li,Dong Sun,Kelei Zhuo
The development of high energy density and power density supercapacitors is very necessary in energy storage and application fields. A key factor of such devices is high-performance electrode materials. In this work, nitrogen and sulfur co-doped graphene aerogels (N/S-GA) were synthesized using graphene oxide as the precursor and 2-mercapto-1-methylimidazole as both the reducing agent and the N/S doping agent. The pore size distribution of the as-prepared N/S-GA was measured and the N/S-GA possesses a hierarchical porous structure. As an electrode material of supercapacitors, the N/S-GA could provide a suitable structure for charge accommodation and a short distance for ion transport. When 1-ethyl-3-methylimidazolium tetrafluoroborate ([Emim]BF4) ionic liquid was used as the electrolyte, the specific capacitance of the N/S-GA electrode material reached 212 F g−1 and 162 F g−1 at the current densities of 1 A g−1 and 10 A g−1, respectively. And the energy density and average power density of the N/S-GA based supercapacitor could reach 117 W h kg−1 and 1.0 kW kg−1 at 1 A g−1, 82 W h kg−1 and 9.5 kW kg−1 at 10 A g−1, respectively. It is believed that the N/S-GA material can be used in high-performance supercapacitors.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能材料
✓ 已验证
DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2023
·
IF 5.4
Zhenggang Jia,Xuexi Zhang,Mingfang Qian,Yingmin Jin,Yueping Xiong
Considering the high ion conductivity and good machining properties of lithium thiophosphate (LPS), it has attracted increasing attention as a solid electrolyte for all-solid-state batteries. Chemical and thermal stability can be significantly enhanced by increasing lithium content. However, in past reports, the lithium content of LPS is commonly less than 40 %. LPS with high lithium content (Li > 40 at%) shows low ion conductivity and high grain boundary resistance. In the present work, LPS with 47.2 at% lithium was prepared by cryomilling and solid-state reaction, avoiding crystallization and adhesion in the ball milling process. By improving the ball milling process, the ion conductivity (1.36 mS/cm) and ion activation energy (10.80 kJ/mol) were optimized by 106.1 % and 41.5 %, respectively. The resulting all-solid-state battery showed a high capacity retention of 104 % after 100 cycles.
研究领域:
材料科学
·
电化学
·
固态离子学
·
能源材料
·
电池技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Bing Zhao,Juan Wu,Zhixuan Wang,Wencheng Ma,Yaru Shi,Yong Jiang,Jinlong Jiang,Xiaoyu Liu,Yi Xu,Jiujun Zhang
Li 7 P 3 S 11 glass-ceramic is considered as a superionic conductor electrolyte with great application prospect, but its realization is limited due to an unstable interface against lithium metal. Incorporation of lithium halides in electrolyte promotes enhancement in ionic conductivity and helps inhibit lithium dendrite growth. However, the mechanistic impact of halide incorporation is still not been fully explained. In this work, the effects of halogen introduction into Li 7 P 3 S 11 glass-ceramic to the ion conductivity, critical current density and interfacial stability of solid electrolyte interphase (SEI) is studied. It shows that the LiBr-incorporated Li 7 P 3 S 11 obtains the most obviously increased critical current density. Structural characterizations indicate that the LiBr does not enter the lattice, but rather exists in the lattice gap of Li 7 P 3 S 11 . However, the highly electronegative Br decreases the electron cloud density on the surface of P 2 S 7 4− and PS 4 3− units, reduces their binding to Li + and thus increases the ion conductivity. Density functional theory evaluations show that the addition of LiBr can increase the interface energy of SEI to Li, which is beneficial to suppress the growth of lithium dendrite. Therefore, the Li/80Li 7 P 3 S 11 •20LiBr/Li cell presents a double increase of the critical current density (0.968 mA/cm 2 ) and circulates stably at 0.5 mA/cm 2 at room temperature.
研究领域:
材料科学
·
电化学
·
固态离子学
·
能源材料
·
锂电池技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Mengxuan Zhang,Lu Zhao,Dong Sun,Yankun Sun,Chunming Xu,Shichao Lu,Tao Li,Yongfeng Li,Zhihua Xiao
The poor electronical conductivity and large volume change of nano-silicon anode has seriously hindered its further application. To overcome these drawbacks, we employed the S-doped multiwalled carbon nanotubes (SCNTs) as the conductive additive to fabricating a scaffolded framework for the first time. The as-assembled Si anode with 5 wt% SCNTs (Si@C-5SCNTs) shows a large specific capacity of 939 mA h g −1 at 2 A g −1 within 0–1 V, significantly higher than that of Si@C (466 mA h g −1 ) and Si@C-5CNTs (720 mA h g −1 ), showing a superior rate performance. Besides, it shows higher initial coulombic efficiency, Li-ion diffusion coefficient, cycling performance, and smaller volume change than that of Si@C and Si@C-CNTs at room temperature. Even at 40 ℃, the Si@C-5SCNTs anode still show a superior rate performance (1842 and 819 mAh g −1 at 0.05 and 2 A g −1 , respectively) and cycling stability (83.6% capacity retention) than that of Si@C and Si@C-5CNTs. To better explain the significantly enhanced electrochemical performance of Si anode both room and high temperature conditions, both the chemo-mechanical coupling and internal temperature distribution models have been rational constructed, and further demonstrated that the SCNTs can effectively buffer the volume expansion and reduce the internal local temperature rise.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
先进电池技术
✓ 已验证
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2018
·Vol. 2017
·期 2
·340-350
·
IF 1.247
Ma Jie,Li Haiyan,Yang Yongqi,Li Xuening
The present study explored the influence of Cl − , Br − , CO 3 2− , HCO 3 − , PO 4 3− , HPO 4 2− , NO 3 − , SO 3 2− and natural organic matter (NOM) on the reaction kinetics and the formation of undesired degradation byproducts during phenol oxidation by heat-activated persulfate (PS). CO 3 2− and PO 4 3− promoted the phenol degradation, because the hydrolysis of CO 3 2− and PO 4 3− created basic pH conditions which were conducive to enhanced PS oxidation rate. Br − promoted the reaction by reacting with sulfate radicals (SO 4 •− ) to produce bromine radicals that can selectively react with electron-rich phenol. NOM scavenged reactive SO 4 •− , thus inhibiting the reaction. As a strong reducing agent, SO 3 2− rapidly reduced PS, thus completely suppressing the reaction. HCO 3 − , HPO 4 2− , Cl − , and NO 3 − had negligible impact on PS oxidation of phenol. Six intermediates were detected in the no anion control using gas chromatography–mass spectrometry (GC-MS). Various toxic halogenated phenols and halogenated hydroquinones were detected in the treatment containing Cl − and Br − . In contrast, in the treatment containing CO 3 2− , HCO 3 − , PO 4 3− , HPO 4 2− , and NO 3 − , no new intermediates were identified except for the intermediates already detected in the control treatment. Based on intermediates identified, reaction pathways for PS oxidation of phenol without anions and in the presence of halides were proposed respectively.
研究领域:
环境化学
·
水处理技术
·
高级氧化过程
·
污染物降解
·
反应机理
·
环境毒理学
✓ 已验证
DOI
高影响因子
Polymer Chemistry
·
2010
·Vol. 1
·期 10
·1638-1643
·
IF 0
Yin Wang,Guohua Jiang,Xinke Sun,Miaojun Ding,Hongyuan Hu,Wenxing Chen
Shell cross-linked polymeric nanoparticles were prepared through an interfacially confined copolymerization of styrene and disulfide cross-linker in a reversible addition-fragmentation chain transfer (RAFT) miniemulsion system using poly(2-(dimethylamino) ethyl methacrylate) (PDMAEMA) as stabilizer and macroinitiator. 1H NMR, FT-IR, and FE-SEM have been applied to investigate the structures and morphologies of the resultant nanoparticles. Fluorescent spectra results show that the as-prepared samples have fluorescent properties, which may be used as a fluorescent carrier for control release of guest molecules.
研究领域:
高分子化学
·
纳米医学
·
药物递送
·
生物材料
·
聚合物科学
✓ 已验证
DOI
Energy Technology
·
2020
·Vol. 8
·期 10
·2000606
·
IF 3.404
Yu Wang,Nachuan Yang,Yi Shuai,Kanghua Chen
Na 3 PS 4 -based materials, which have relatively high conductivities, make promising Na-ion solid electrolytes for realizing all-solid-state sodium batteries. Herein, Na 2.9375 PS 3.9375 Cl 0.0625 solid electrolytes’ power is prepared by a mechanical ball milling process and subsequent heat treatment process using low-cost Na, NaCl, P 2 S 5 , and S as raw materials. In addition, its electrical conductivity and electrochemical performance by compounding with polyethylene oxide–NaClO 4 are studied. The results show that Na 2.9375 PS 3.9375 Cl 0.0625 solid electrolyte heated at 550 °C with polyethylene oxide–NaClO 4 exhibits Na-ion conductivity of 8.75 × 10 −4 S cm −1 . The pragmatic and cost-effective raw materials grant the solid electrolyte with high-performance and higher practical value.
研究领域:
材料科学
·
电化学
·
能源存储
·
固体离子学
·
无机非金属材料
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yanwei Sun,Chunshan Song,Xinwen Guo,Sungwon Hong,Jungkyu Choi,Yi Liu
Metal-organic framework (MOF) membranes have received increasing attention due to their unprecedented potential for energy-efficient gas separation. Compared with other MOF materials (like ZIF), fabrication and microstructural manipulation of high-performance Ti-MOF-based membranes, although being very attractive due to their excellent chemical and thermal stability, remained relatively less investigated due to the limitations of available titanium sources and heating modes. In this study, different Ti sources (TPOT, TiS 2 , and MXene) and heating modes (conventional heating, multi-mode microwave heating, and single-mode microwave heating) were examined for the preparation of NH 2 -MIL-125 membranes showing diverse microstructures and gas separation performances. The present work revealed that for the first time, MXene , the new two-dimensional Ti carbide , could be used as Ti source for synthesizing MOF membranes. The best performing NH 2 -MIL-125 membranes, which were obtained with TiS 2 as the metal source under single-mode microwave heating, exhibited the highest H 2 /CO 2 selectivity (ca. 17.2) as well as considerable H 2 permeance (1.7 × 10 −7 mol m −2 s −1 Pa −1 ), owing to an enhanced non-thermal effect of single-mode microwave heating and balanced dissolution rate of TiS 2 .
研究领域:
材料科学
·
膜分离技术
·
化学工程
·
纳米材料
·
气体分离
·
可持续能源
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2022
·Vol. 6
·期 5
·e12415
·
IF 13.443
Lin Chen,Jingwen Zhou,Junxiang Zhang,Guicai Qi,Bin Wang,Jianli Cheng
High energy density Li-CO 2 batteries have attracted much attention owing to the “two birds with one stone” feature in fixing greenhouse gas CO 2 and providing renewable energy. However, poor reversibility of the discharge product Li 2 CO 3 is one of the main problems that limit its application, resulting in poor cycling stability and severe polarization. Herein, copper indium sulfide (CIS), a semiconducting non-precious metal sulfide, is fabricated as cathode catalysts for high-performance Li-CO 2 batteries. Combined with the synergistic effect of bimetallic valence bonding and coordinated electron transfer, Li-CO 2 batteries using CIS cathodes exhibit high full specific discharge capacity, excellent rate capability and cycle stability, namely it delivers a high specific full discharge capacity of 8878 μAh cm −2 , runs steadily from 10 to 100 μA cm −2 , and performs a stable long-term cycling behavior (>1050 h) under a high energy efficiency of 84% and a low charge voltage of approximately 3.4 V at 20 μA cm −2 within 100 μAh cm −2 . In addition, a flexible Li-CO 2 pouch cell is constructed to reveal the potential of employing CIS to fabricate flexible high energy storage devices in practical applications. This work shows a promising development pathway toward next-generation sustainable energy storage devices.
研究领域:
电化学
·
能源材料
·
纳米催化
·
可持续能源存储
·
金属-气体电池
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Chunru Li,He Song,Changming Mao,Hongrui Peng,Guicun Li
Antimony (Sb) is an attractive anode material for lithium-ion batteries with high theoretical capacity. However, its practical application is greatly hindered by the rapid capacity fading due to the large volume expansion during lithiation. Tuning the morphology of active materials at the nanoscale or designing reasonable components is essential to address this issue. Employing an antimony sulfide nanorod as semi-sacrificial template, here, we successfully synthesize one-dimensional MoS 2 sheets-decorated Sb@Sb 2 S 3 @C(MoS 2 -Sb@Sb 2 S 3 @C) nano-structure via facile thermal carbonization of Mo-polypyrrole complex coating film. During annealing, metallic Sb from the partial reduction of Sb 2 S 3 nanorods is embedded into amorphous carbon nanotubes that are derived from polypyrrole and simultaneously MoS 2 nanosheets forms on the surface of Sb-Sb 2 S 3 -C nanostructures. This unique hierarchical tubular composite not only can serve as robust skeleton frameworks for accommodating volume changes of metallic Sb and Sb 2 S 3 during cell cycling, but also are characterized by high electronic conductivity (because of the amorphous carbon nanotubes and metallic Sb) and abundant active sites, both of which are beneficial for the improvement of Li-ion storage properties. As expected, the MoS 2 -Sb@Sb 2 S 3 @C composite exhibit a high specific capacity (1596 mAh g −1 at 0.1 A g −1 ), high rate capability (481 mAh g −1 at 5 A g −1 and 355 mAh g −1 at 8 A g −1 ), and stable cycling performance (760 mAh g −1 maintained after 100 cycles at 1 A g −1 ). Our work potentially sheds some light on future development of alloy-type anodes for battery applications.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Usman Farooq,Fei Wang,Malik Muhammad Arslan Aslam,Xinhai Wang
The presence of additional active sites in a synthesized heterogeneous material is crucial for the activation of peroxymonosulfate (PMS). The prepared CuO sheets ( sh- CuO) were utilized in the PMS process to degrade trichloroethane (TCA). Various characterizations (SEM, TEM, XRD, and XPS) revealed monoclinic tenorite CuO irregular rectangular sheets (0.72 × 0.28 μm) with an 82 % crystallinity and mesoporous structure. The sh- CuO showed enhanced (93 %) heterogeneous activation of PMS for TCA oxidation compared to commercially available CuO (43 %) and Co 3 O 4 (47 %). The experimental parameters study such as PMS, sh -CuO dose, temperature, and pH confirmed that sh -CuO possessed low activation energy (9.601 kJ/mol) which strengthened its performance around acidic pH. The mechanism study revealed that due to its high redox potential , not only SO 4 − radicals but also Cu 3+ contributed as a powerful oxidant. Finally, the sh -CuO stability and recyclability of 86 % until the fourth cycle supported its potential application in groundwater remediation.
研究领域:
环境化学
·
材料科学
·
催化化学
·
环境污染与修复
·
物理化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）