Energies
·
2022
·Vol. 15
·期 4
·1354
·
IF 3.252
Shuai Zhang,Zhenhua Wu,Zekun Liu,Yongbo Lv,Zhiyu Hu
Photothermal conversion is an environmentally friendly process that harvests energy from the sun and has been attracting growing research interest in recent years. However, nanostructured strategies to improve light capture performance deserve further development, and the application of solar heating effects for clean energy needs to be explored. Herein, a multiscale nanomaterial was prepared by in situ polymerizing the polyaniline (PANI) nanoparticles into porous anodic aluminum oxide (AAO) membrane. As a result, the as-prepared PANI-AAO shows broadband solar absorption and provides a platform for efficient photothermal conversion. What is more, we introduced a typical thermoelectricity generator (TEG) with excellent output performance and combined it with PANI-AAO to prepare a solar thermoelectric generator (s-TEG). The s-TEG harvests solar energy and converts it into electricity, showing an outstanding power generation capability in outdoor conditions. Thus, the nanostructured broadband solar absorber and the integrated solar thermoelectric generator offer a promising candidate for a sustainable and green energy source in the future.Keywords:polyaniline nanoparticles;anodic aluminum oxide;solar absorber;thermoelectricity generator
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yu Nie,Dongqi Yue,Wenmei Xiao,Wenxiang Wang,Hou Chen,Liangjiu Bai,Lixia Yang,Huawei Yang,Donglei Wei
For the new generation of wearable flexible electronic devices, it is urgent to achieve higher requirements for the realization of anti-freezing properties. Herein, a strategy was successfully designed to fabricate flexible sensors that could withstand at −30 °C. Functional poly(diallyldimethylammonium chloride) (PDDA) were successfully grafted onto the surface of cellulose nanocrystals (CNCs) by electrostatic interaction. As biomass acid, phytic acid (PA) with anti-freezing properties were further introduced as crosslinking agents, poly(vinyl alcohol) (PVA)/CNCs@PDDA/PA (PCP) nanocomposite hydrogels were successfully fabricated through facile freeze–thaw cycle in the water/glycerol binary solvent system. With the increase of PA ratio, the anti-freezing performance of hydrogels is improved obviously. The obtained hydrogels still maintain favorable mechanical strength (1.0 MPa) and self-healing efficiency (85.0%) after healing about 4 h at −30 °C. Hydrogels based flexible sensors exhibit fast response time (310.0 ms), wide strain detection range (0.0 ∼ 600.0%), excellent stability and fatigue resistance, which can also perform excellent human motion signal detection tasks even at −30 °C for 24 h. This work paves the way for the application of wearable flexible electronic devices in extreme climate areas.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Youguo Huang,Yiyan Wang,Yanhao Shen,Qichang Pan,Yan Tang,Yezheng Cai,Qingyu Li,Qiang Wu,Zhaoling Ma
The amorphous electrocatalysts with lower periodic structure take over a vital role in oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) of oxygen electrode of fuel cell and metal-air batteries . However, the controllable synthesis of amorphous electrocatalysts with a certain periodic range still faces a certain challenge. Herein, different crystallization period is controllably synthesized by adjusting two kind of organic ligands in the competitive complexation process of coordinating metal ions . Except for crystallization, the competitive complexation also alters the chemical composition of electrocatalyst. The CoO nanoparticles with the short-range ordered structure supported on N,P codoped carbon flakes showcase local defect of the positional deviation along with different crystallization orientation while endow superior bifunctional activity for ORR and OER with high half-wave potential of 0.841 V for ORR and overpotential at 10 mAcm −2 of 360 mV for OER along with a low voltage gap of 0.77 V even in 1 M KOH solution.
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Gongrui Wang,Wentao Wang,Xiaoyue He,Jie Li,Lai Yu,Bo Peng,Genqiang Zhang
Potassium ion hybrid capacitors (KIHCs) are one of the most promising candidate for large scale energy storage owing to the merits of high energy/power density, natural abundance and low cost. However, the sluggish ion adsorption kinetics on both electrodes results in unfavorable performance of KIHCs. Herein, we prepared bi-functional hierarchical porous P/N co-doped pancake-like carbon (PN-PanC), which exhibits superior K + /FSI − storage performance. Specifically, the PN-PanC delivers high specific capacity (385.8 mAh g −1 at 100 mA g −1 ), stable cycling capability (2000 cycles with an average attenuation rate of 0.21 ‰ at 1000 mA g −1 ) for anode application, and remarkable specific capacity (94.2 mAh g −1 at 100 mA g −1 ) when evaluated as cathode. The origins of the concurrently enhanced K + /FSI − storage are studied by ex-situ XPS, in-situ Raman, EIS analysis and DFT calculations, which could be attributed to the synergy of hierarchical porous structure, exposed active sites, tuned electronic structure and enhanced ion adsorption kinetics. Importantly, the KIHCs devices exhibit both high energy density (155.9 Wh kg −1 at 76.1 W kg −1 ) and high power density (11,309.1 W kg −1 with 22.0 Wh kg −1 retained) with ultra-long lifespan (93.4% capacity retention at 500 mA g −1 after 20 K cycles).
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Yue Zhao,Huilian Hao,Tianliang Song,Xu Wang,Changwang Li,Wenyao Li
By combining the large power density of supercapacitors with the high energy density of ion batteries , a novel zinc-ion hybrid supercapacitor (ZHSC) is proposed and considered a promising candidate. But there are still challenges in the selection and application of reliable cathode materials . Herein, we used a mature and safe one-step hydrothermal method to synthesize N/P co-doped graphene (NPG), which exhibited a unique three-dimensional structure and a large specific surface area, showing great advantages as cathode to assemble Zn//NPG ZHSC with zinc foil. In the 1 M ZnSO 4 solution, the ZHSC shows superior electrochemical performance, which presents an excellent specific capacitance of 210.2 F g −1 under a wide working voltage of 1.8 V, and it achieves both a maximum energy density of 94.6 Wh kg −1 and a large power density of 4500 W kg −1 . More importantly, the capacitance retention rate remains 82% and a coulomb efficiency of ∼100% is achieved after 15,000 cycles. Overall, the results of this study highlight the efficient synthesis and excellent performance of NPG cathode materials, and also promote the rapid development and great application of high-performance Zn-ion hybrid capacitors.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Chemistry
·
2023
·
IF 3
Dawei Zhang,Zhenhua Zhou,Guifeng Sun,Shiying Chen,Minzhi Jiang,Zihan Yao,Anthony Chukwunonso Ogbuehi,Hao Wang,Lei Jin
Protein glycosylation and phosphorylation are two important post-translational modifications and play significant roles in various biological processes. However, both glycoproteins and phosphoproteins are in low abundance in complex samples, which hinders their characterization. In this work, we developed a novel method for the simultaneous adsorption of glycoproteins and phosphoproteins based on solid phase extraction. By virtue of the unique structure of hydrophilic titanium (IV) ion immobilized cotton fiber functionalized with phytic acid (denoted as Ti4+-PA-cotton), glycoproteins, and phosphoproteins could be efficiently enriched in one-step incubation and eluted in sequence. The newly prepared Ti4+-PA-cotton was well characterized, and the adsorption isotherms and kinetics were studied. The maximum adsorption capacities of Ti4+-PA-cotton for β-casein and HRP were 833.3 mg/g and 384.6 mg/g with the adsorption rate of 259.1 and 63.1 mg/g·min. Standard protein mixture of BSA, HRP, and β-casein was used to test the enrichment ability as a proof of concept. The SDS-PAGE results demonstrated that Ti4+-PA-cotton had an excellent enrichment performance and possessed an outstanding application potential in the analysis of glycoproteins and phosphoproteins.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2023
·Vol. 61
·期 22
·2909-2921
·
IF 3.4
Jianhua Zhou,Chen Liu,Kai Lu,Fangxin Dong
In this study, phytic acid-polydopamine functionalized GO (GO@PA@PDA) was first synthesized. The DOPO derivatives, hydroxyl-terminated polydimethylsiloxane (PDMS) and GO@PA@PDA were incorporated into waterborne polyurethane (WPU) by in situ polymerization. The chemical structure of GO@PA@PDA was characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, ultraviolet–visible (UV–vis) spectroscopy and scanning electron microscopy. A cone calorimeter test and a universal testing machine investigated the flame retardancy and mechanical properties of GO@PA@PDA modified waterborne polyurethane (GPD-WPU). The results showed that the incorporation of GO@PA@PDA into WPU significantly enhanced the flame retardancy by reducing the heat release rate, total heat release, smoke production rate, and total smoke production. Furthermore, the mechanical properties of the GPD-WPU composite films increased with the dosage of GO@PA@PDA from 0 to 2.0 wt%, and decreased slightly afterward. The contact angle and atomic force microscope measurements showed that the addition of GO@PA@PDA increased the surface roughness of GPD-WPU composite film, thereby improving the hydrophobicity of GPD-WPU composite films. Afterward, GPD-WPU as a finishing agent was coated on polyester fabric. The experimental results of limiting oxygen index (LOI) and the vertical burning test indicated that when the dosage of GO@PA@PDA was 2.5 wt% in GPD-WPU, after-flame time, after-glow time, damage length and LOI value of the coated polyester fabric were 2.9 s, 0 s, 6.8 cm, and 28.6%, respectively. Graphical
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 33
·22831-22837
·
IF 3.9
Bin Li,Wenrui Hao,Aolin Wu,Mengjing Zhou,Qinghua Yan,Heng Zhang,Lihua Su
The present study synthesized a deep eutectic solvent (DES) using acrylic acid (AA), acrylamide (AM), and choline chloride (ChCl), and added phytic acid (PA) as a filler. Subsequently, the PA/P(AA-co-AM) composite hydrogel was prepared under ultraviolet irradiation and used a photoinitiator. Characterization of the hydrogels was conducted using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The study aimed to investigate the impact of PA on the mechanical properties, fatigue resistance, and electrical conductivity of the composite hydrogel. The findings demonstrated that as the mass fraction of PA increased, the compressive strength of the composite hydrogel gradually decreased, yet the fatigue resistance of the composite hydrogel increased. Specifically, after 10 cycles of compression, the resilience recovery rate of FP0 dropped from 86.9% to 70.4%, the maximum stress recovery rate of FP1 dropped from 97.9% to 89.4%, the maximum stress recovery rate of FP2 dropped from 94.4% to 86.6%, and the maximum stress recovery rate of FP3 dropped from 97.3% to 93%. Overall, this study offers a straightforward and efficient method for producing composite hydrogels with both fatigue resistance and electrical conductivity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Jiehui Li,Yaxin Wu,Jinmei He,Qinghua Liu,Xiaofeng Liu,Hui Liu,Yuyu Xue,Leihuan Mu,Mengnan Qu
Developing functional adsorption materials that efficiently adsorb high viscosity oil is crucial for solving oil spill accidents. Herein, low-density three-dimensional porous melamine sponge was used as the modified substrate. First, phytic acid is selected for modification to make it flame retardant. Then, polypyrrole (PPy) and hexadecyltrimethoxysilane (HDTMS) are modified on its surface through low-temperature polymerization and impregnation, ultimately obtaining a multifunctional durable superhydrophobic PA/PPy/HDTMS@MF (melamine foam) sponges with photo/electro-thermal effects and flame retardant. When the applied voltage is 10 V, the core temperature on the PA/PPy/HDTMS@MF sponge’s surface rapidly increases from 26.4 °C to 134.6 °C within 80 s, and the sponge will not burn and be damaged. Under the irradiation of one sunlight (1 kW/m 2 ), the surface core temperature can rapidly rise from 26.4 °C to 93 °C within 70 s. The superhydrophobic PA/PPy/HDTMS@MF sponge can all-weather absorb kinds of high viscosity crude oil and solid oils that are 18–27 times than its own mass, indicating that the prepared superhydrophobic sponge has excellent oil collection performance. And under one sunlight (1 kW/m 2 ), after 10 cycles of desorption, the prepared superhydrophobic sponge can still absorb 26 times more crude oil than its own weight. In addition, PA/PPy/HDTMS@MF sponge also has the characteristic of photothermal defrosting and deicing, and the ice on its surface can begin to melt within 5 min under one sunlight (1 kW/m 2 ). The melted water will not enter the inside of the sponge, effectively ensuring the utilization efficiency of photothermal effects. Based on the above advantages, the prepared photo/electro thermal conversion superhydrophobic sponge has excellent development prospects in the field of high viscosity oil adsorption and photothermal defrosting/deicing.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 42
·e54542
·
IF 3
Wangping Qin,Ruike Zhang,Yan Fu,Jie Chang
A fully bio-based flame retardant PNF was prepared based on phytic acid, nicotinamide and iron salts in aqueous solution by a green and convenient ionic reaction, and then blended with polylactic acid (PLA) to improve its properties. The results demonstrated that the PLA composite containing 4 wt% PNF(PLA/4PNF) had a flame retardancy rating of UL 94 V-0 and an oxygen index of 25.3%. In addition, the peak heat release rate (PHRR) and total heat release (THR) of PLA/4PNF were reduced by 27.0% and 27.7%, respectively, compared to pure PLA, and the flame retardancy index (FRI) was increased by 210%, demonstrating that PNF could effectively improve the flame retardancy of PLA. Moreover, the thermal conductivity of PLA/4PNF increased by 284% compared to pure PLA, making the material require higher heat to reach the combustion state. DSC and mechanical property tests showed that PLA/4PNF had 31.3% higher crystallinity, 5.2% higher heat deflection temperature and 10.0% higher flexural modulus compared to pure PLA, indicating that PNF effectively improved the mechanical properties and heat resistance of PLA. The research in this article broadens the application of bio-based flame-retardant PLA in the field of electronic appliances and office equipment.
✓ 已验证
产品关联
DOI
高影响因子
ENERGY
·
2023
·
IF 9
Yongcun Liu,Wenye Zhang,Xiaoxiang Su,Wenjie He,Jia Yang,Gang Qin,Xiang Yu,Qiang Chen
Flexible supercapacitor is an important energy supply source for wearable electronic devices. Herein, an integrated supercapacitor with exceptional electrochemical performance is successfully constructed based on a novel dual redox-mediated double network (DN) gel polymer electrolyte (GPE). Thanks to the synergistic effect of DN structure and multiple physical interactions (hydrophobic association, hydrogen bond and ionic coordination), the polyacrylic acid/lauryl methacrylate/sodium carboxymethyl cellulose/H 2 SO 4 /CuSO 4 _FeSO 4 GPE possesses exceptional mechanical properties and rapid self-healing ability. In addition to being ionic cross-linking agents, CuSO 4 _FeSO 4 can also serve as carrier donors and anti-freezing agents, endowing the GPE with excellent conductivity (0.17 S/cm) and low temperature adaptability. The GPE-based integrated supercapacitor demonstrates an outstanding specific capacitance of 414.96 mF/cm 2 and a high energy density of 84.21 μWh/cm 2 , benefiting from redox reactions of Cu 2+ /Cu + and Fe 2+ /Fe 3+ at the electrode/electrolyte interface. Due to the seamless gradient structure, the interfacial resistance is reduced and the relative slippage is overcome, resulting in splendid capacitance retention of the supercapacitor under various mechanical deformations . Moreover, the device demonstrates promising self-healing ability even at −20 °C. This work provides a novel strategy for designing and fabricating the supercapacitor with self-healing, arbitrary deformability and anti-freezing in next-generation electronic devices.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2023
·
IF 4.6
Haowen Sun,Qiuru Bao,Gang Chen,Shulong Wu,Yuan Liu,Qi Wang
With the development of microelectronics and flexible wearable electronic devices, poly(vinyl alcohol) (PVA) based thermal interface materials (TIMs) have received much attention. However, poor heat dissipation and high flammability have emerged as the key issues that restrict their application. In this work, the directional alignment of phytic acid (PA) modified boron nitride nanosheets (BNNS) and Ti 3 C 2 T x MXene in PVA matrix was achieved by ice-templated assembly, which simultaneously enhanced the flame retardancy and thermal conductivity of PVA composite films (PVA/BT x ). Owing to the synergistic effect between oriented BNNS and Ti 3 C 2 T x MXene on forming the thermally conductive network within PVA matrix, the in-plane thermal conductivity of PVA/BT x -30 composite film was increased to 8.54 W m −1 K −1 , much higher than that of PVA film (0.30 W m −1 K −1 ). Meanwhile, the heat dissipation process of PVA films applied as TIMs was simulated, which showed that PVA/BT x -30 films exhibited excellent thermal conduction and significantly decreased the operation temperature of electronic devices. Additionally, the peak heat release rate (PHRR) and total heat release (THR) of PVA/BT x -30 films were reduced by 60.3% and 62.0%, respectively, showing good flame retardancy. Importantly, the flexible Ti 3 C 2 T x nanosheets further enhanced the mechanical properties of PVA/BT x composite films. Therefore, this work provides an effective method for the preparation of high thermal conductivity and flame retardant composite materials, which has important potential applications in the microelectronics industry.
✓ 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）