Batteries & Supercaps
·
2025
·
IF 4.7
Xia Li,Ying Liu,Liangdan Chen,Long Su,Fei Lu,Hui Gu,Xinpei Gao
Aqueous zinc-ion batteries (AZIBs) have recently emerged as a promising candidate for large-scale energy storage applications, primarily due to their nonflammable nature, low production costs, and satisfactory specific energy. Nevertheless, their cycle stability is significantly limited by the inevitable formation of Zn dendrites and undesirable water-induced parasitic reactions. To tackle these challenges, a porous poly(p-aminoazobenzene) (PPAAB) interfacial protective layer is developed for regulating the transport and deposition behavior of Zn 2+ ions. The engineered PPAAB coating, functionalized with polar moieties ( NH and N ), exhibits strong hydrophilic characteristics that enable controlled Zn 2+ ion flux and deposition behavior via a selective ion-confinement mechanism. Consequently, the Zn@PPAAB anode exhibits improved interfacial dynamics and a low nucleation overpotential, demonstrating stable plating/stripping behavior. When paired with a NaV 3 O 8 (NVO) cathode, the NVO||PPAAB@Zn cell showcases impressive capacity retention, maintaining 84% of its capacity after 1100 cycles at 1.0 A g −1 . This study not only advances accessible interface engineering but also provides deeper mechanistic insights into Zn anode behavior, paving the way for enhanced AZIBs. Graphical A porous poly(p-aminoazobenzene) (PPAAB) protective layer functionalized with polar groups ( NH and N ) is engineered to regulate Zn 2+ flux, suppress dendrite growth, and inhibit side reactions, achieving highly stable and reversible zinc metal anodes for advanced aqueous batteries.
✓ 已验证
产品关联
DOI
高影响因子
Biosensors-Basel
·
2022
·Vol. 12
·期 10
·813
·
IF 5.743
Chao Hu,Ping Pan,Haiping Huang,Hongtao Liu
Cr-MOF nanoparticles were synthesized by a simple hydrothermal method, and their morphology and structure were characterized by SEM, TEM, and XRD techniques. The Cr-MOF modified glassy carbon electrode (Cr-MOF/GCE) was well constructed and served as an efficient electrochemical sensor for the detection of p-nitrophenol (p-NP). It was found that the Cr-MOF nanoparticles had significant electrocatalytic activity toward the reduction of p-NP. The Cr-MOF-based electrochemical sensor exhibited a low detection limit of 0.7 μM for p-NP in a wide range of 2~500 μM and could maintain excellent detection stability in a series of interfering media. The electrochemical sensor was also practically applied to detect p-NP in a local river and confirmed its validity, showing potential application prospects.Keywords:nanoparticle;modified electrode;electrochemical sensor;electrocatalytic activity;detection limit
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2022
·
IF 19.069
Sijing Liu,Yuewang Yang,Shusheng Chen,Jiongzhi Zheng,Dong Gyu Lee,Dan Li,Jinglei Yang,Baoling Huang
Flexible ionic thermoelectric materials with large thermopowers show great promise for ultrasensitive thermal detection in wearable devices . Here large and tunable p- and n-type thermopowers are reported in stretchable and self-healing ionogels made of a fluorocarbon elastomer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), an ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIMTFSI) and a salt acting as the thermopower regulator. Particularly, a self-healing n-type ionic thermoelectric material is developed for the first time. The thermopower of the resultant ionogels varies from + 30 mV K −1 to − 21 mV K −1 at 90% relative humidity. Meanwhile, the ionogels exhibit excellent stretchability up to 1700% and appropriate Young’s modulus of around 0.26 MPa. Both the mechanical and thermoelectric properties can self-heal spontaneously after damage. Taking advantage of the large p and n-type thermopowers, the stretchable self-healing ionogels are integrated as a flexible thermoelectric detector with 10 pairs of p- and n-type legs on copper electrodes, showing a total thermopower of 0.25 V K −1 operating with a low temperature difference of 1–2 K.
✓ 已验证
产品关联
DOI
高影响因子
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
·
2022
·Vol. 57
·期 12
·1213-1223
·
IF 1.351
Uddin W.,Nawabi M. Y.,Rehman S. Ur.,Hu G.,Khan J.,Shen X.
Abstract We introduced a novel technique for monitoring the activity of analytes for the first time. The technique is built upon the inhibitory effect caused by the free-radical-scavengers on the pattern of novel Briggs–Rauscher (BR) electrochemical oscillator catalyzed by tetra-aza-macrocyclic complex catalyst ([NiL](ClO 4 ) 2 . The ligand “L” in the complex is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene. The effect involves a sudden ceasing of oscillation, an inhibition time ( t in ) that directly proportional to the amount of additive ( p -Dimethylaminobenzaldehyde ( p -DMAB)) added, and subsequent restoration of oscillations. Thus, a linear regression curve between concentrations range of 2.7 × 10 –7 mol L –1 to 4.5 × 10 –6 mol L –1 p -DMAB Vs t in was achieved with a correlation coefficient of 0.98. The observed limit of detection (LOD) is 2.7 × 10 –7 mol L –1 while the RSD calculated from 7 measurements of 2.5 × 10 –6 mol L –1 p -DMAB is 1.5%. Factors that influence the determination of p -DMAB were also studied. The mechanistic interpretation of the perturbed oscillation was anticipated from both NF and FCA models. A fleeting elucidation is that the intermediate species (HOO • ) produced during oscillatory reactions and reacted with p ‑DMAB. As a result, the oscillation was temporarily ceased.
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2022
·Vol. 33
·期 6
·1892-1897
·
IF 3.348
Xing Chen,Chenyang Hu,Huidi Xu,Rui Qu,Xiaohong Hu,Jie Yang,Xiaofeng Song
Polyurethane (PU) as a multifunctional material has been produced by various methods. In this work, a series of novel chloric PUs are made from p -toluene sulfonyl isocyanate (TSI) and epichlorohydrin (ECH) via direct salen catalysis under mild temperature. Catalytic efficiency and activity of salen metal complexes are analyzed and evaluated. The salen-cobalt (III) (DNP) exhibits high yield, excellent urethane selectivity, narrow polymer weight distribution in bulk polymerization with the molar ratio of TSI with catalyst changing. And compared to bulk polymerization, salen-cobalt (III) (DNP) can promote the reaction better in solution polymerization and synthesize the product with higher molecular weight. The obtained polymer shows excellent thermal stability, and its thermal degradation starts from 240.8°C. So, it will provide experience for developing functional PU under mild reaction conditions.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Zhijie Cui,Zhibo Yan,Jie Yin,Wenpin Wang,Mei-E Yue,Zhongcheng Li
Tailoring surface composition and coordinative environment of catalysts in a nano-meter region often influence their chemical performance. It is reported that CoP exhibits a low dissociation ability of H–OH, originating from the poor desorption of intermediate species. Herein, we provide a feasible method to construct P-Fe 2 O 3 -CoP nanosheets through a gas-phase phosphorization process. P doping induces the formation of interfacial structure between Fe 2 O 3 and CoP and the generation of defective structures. The resulting P-Fe 2 O 3 -CoP nanosheets afford high freshwater/seawater oxidation activity (250/270 mV@10 mA/cm 2 ) in 1 mol/L (M) KOH, which is even lower than commercial RuO 2 . Compared with CoP||CoP, P-Fe 2 O 3 ||P-Fe 2 O 3 , and Co 3 O 4 ||Co 3 O 4 , the assembled P-Fe 2 O 3 -CoP||P-Fe 2 O 3 -CoP exhibits the superior water/seawater electrolysis performance with 1.61/1.65 V@10 mA/cm 2 . The synergistic effect of P doping, defective structure, and heterojunction leads to high water oxidation efficiency and water splitting efficiency.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2021
·Vol. 26
·期 22
·6849
·
IF 4.412
Yan Fan,Tao Wang,Yinwei Qiu,Yinli Yang,Qiubo Pan,Jun Zheng,Songwei Zeng,Wei Liu,Gang Lou,Liang Chen
Graphene p-n junctions have important applications in the fields of optical interconnection and low–power integrated circuits. Most current research is based on the lateral p-n junction prepared by chemical doping and other methods. Here, we report a new type of pure graphene oxide (pGO) vertical p-n junctions which do not dope any other elements but only controls the oxygen content of GO. The I–V curve of the pGO vertical p–n junction demonstrates a remarkable rectification effect. In addition, the pGO vertical p–n junction shows stability of its rectification characteristic over long-term storage for six months when sealed and stored in a PE bag. Moreover, the pGO vertical p–n junctions have obvious photoelectric response and various rectification effects with different thicknesses and an oxygen content of GO, humidity, and temperature. Hall effect test results show that rGO is an n–type semiconductor; theoretical calculations and research show that GO is generally a p–type semiconductor with a bandgap, thereby forming a p–n junction. Our work provides a method for preparing undoped GO vertical p–n junctions with advantages such as simplicity, convenience, and large–scale industrial preparation. Our work demonstrates great potential for application in electronics and highly sensitive sensors.Keywords:undoped p–n junction;vertical p–n junction;graphene oxide
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Zi-Chen Wang,Xiao-Di Jiang,Yu-Xian Duan,Xu Wang,Zhen-Hua Ge,Jin-Ming Cai,Xiao-Ming Cai,Hong-Lin Tan
Tin selenide exhibits outstanding thermoelectric properties. Among its various forms, multicrystalline SnSe stands out as a more practical choice compared to single-crystal SnSe, owing to its straightforward chemical synthesis process, enhanced processability, and scalability. Herein, we synthesized p-type polycrystalline Sn 1−x Ag X Se bulk materials (x = 0, 0.01, 0.015, 0.02, 0.025, 0.03) using a simple hydrothermal and hot pressing method. Characterization methods such as XRD , Raman and XPS were used to demonstrate the successful doping of Ag + into the SnSe matrix. When the doping concentration reached Sn 0.98 Ag 0.02 Se (x = 0.02), Ag + reached the optimal concentration in the SnSe matrix, causing significant lattice distortion which increased phonon scattering and lowered the thermal conductivity , resulting in Sn 0.98 Ag 0.02 Se achieving ZT max = 1.14. However, when the doping concentration exceeded Sn 0.98 Ag 0.02 Se (x > 0.02), excess silver ions precipitated, partially acting as charge carriers, leading to a significant increase in electrical conductivity , resulting in Sn 0.97 Ag 0.03 Se having an electrical conductivity of 6860 s/m at 773 K. Compared to the pure phase, the electrical conductivity of Sn 0.97 Ag 0.03 Se increased by 259 %, and the ZT value of Sn 0.98 Ag 0.02 Se increased by 178%. This work demonstrates that Ag + is an effective p-type dopant in the SnSe system and indicates that high ZT values in SnSe can be achieved through a simple, low-cost, and environmentally friendly method.
✓ 已验证
产品关联
DOI
高影响因子
CLINICAL AND EXPERIMENTAL ALLERGY
·
2021
·Vol. 52
·期 1
·46-58
·
IF 5.018
Nan Wang,Jue Wang,Yongjing Zhang,Shiling Hu,Tianxiao Zhang,Yuanyuan Wu,Xiuzhen Sun,Tao Zhang,Shuanying Yang,Langchong He
Background Allergic asthma is a common inflammatory lung disease and a major health problem worldwide. Mast cells (MCs) play a key role in the early-stage pathophysiology of allergic asthma. Substance P (SP) functions in neurogenic inflammation by activating MCs, and therefore, it may to participate in the occurrence and development of asthma. Objective We examined the relationship between SP and lung inflammation, and also whether SP can directly trigger asthma. Methods We measured the number of peripheral blood eosinophils, neutrophils and basophils and evaluated the levels of IgE and SP in blood samples of 86 individuals with allergic asthma. Serum IgE and SP levels were also determined in 29 healthy individuals. C57BL/6 mice were subjected to different doses of SP, and bronchoalveolar lavage fluid (BALF) was collected to count the inflammatory cells. Lung tissues were analysed using histopathological methods to evaluate lung peribronchial inflammation, fibrosis and glycogen deposition. Levels of IgE, interleukin (IL)-1, IL-2, IL-4, IL-5, IL-13, IL-17 and IFN-γ were determined in mouse serum. Results Substance P levels were increased in the serum samples of patients with asthma. SP induced mouse lung peribronchial inflammation, fibrosis and glycogen deposition, with high levels of Th2-related cytokines such as IL-4, IL-5 and IL-13 observed in the BALF. Furthermore, low level of total IgE was noted in the serum, and SP had little effect on MC-deficient kit W-sh/W-sh mice. Conclusions & clinical relevance Substance P levels increased significantly in serum of asthmatic patients and independently associated with the risk of asthma. Furthermore, SP induced Th2 lung inflammation in mice, which was dependent on MCs. Graphical Here, we found that SP levels were increased in the serum samples of patients with asthma, which was independently associated with the risk of asthma. In mice model, SP induced lung peribronchial inflammation, fibrosis, and glycogen deposition, with high levels of Th2-related cytokines in the BALF. Furthermore, low level of total IgE was noted in the serum, and SP had little effect on MC-deficient kit W-sh/W-sh mice, which indicated that SP induced Th2 lung inflammation in mice was dependent on MCs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2020
·
IF 5.006
Haodong Duan,Xiaolei Xu,Kangwei Leng,Ge Guo,Qing Yu,Xinjin Li,Yuxi Han,Jun Gao,Zhongwei Wang
The characteristics of the reaction for the preparation of dichlorophenylphosphine (DCPP) via benzene and PCl 3 in the presence of AlCl 3 were studied. Some unique characteristics were observed when a catalytic amount of AlCl 3 was used. Namely, more than one mole of DCPP was obtained per mole AlCl 3 , the reaction solution was layered, and DCPP could be directly separated. Our mechanistic study showed that benzene reacted with PCl 3 to form DCPP-AlCl 3 , and DCPP-AlCl 3 dissociated into DCPP and AlCl 3 , continuing to catalyze this reaction. This resulted in the high catalytic efficiency of AlCl 3 . The layering of the reaction solution was caused by the immiscibility of DCPP-AlCl 3 with the raw materials, greatly facilitating the dissociation process of DCPP-AlCl 3 . The formation of diphenylphosphorus chloride (DPC) was due to a continuous Friedel-Crafts reaction between DCPP and benzene. DPC cooperated with AlCl 3 to form the stable coordination compound DPC-AlCl 3 that did not dissociate and was responsible for the deactivation of AlCl 3 .
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemistry
·
2020
·
IF 3.693
Li Yujiao,Li Chen,Yu Huanqin,Yuan Beilei,Xu Fan,Wei Haoming,Cao Bingqiang
To regulate the optical and electrical properties of the crystals and films of the intrinsic methylammonium lead iodide (CH3NH3PbI3), we dope them with sodium (Na) by selecting sodium iodide (NaI) as a dopant source. The highly conductive p-type sodium-doped CH3NH3PbI3 (MAPbI3: Na) perovskite single crystals and thin films are successfully grown using the inverse temperature crystallization (ITC) method and antisolvent spin-coating (ASC) method, respectively. With the increase of Na+ doping concentration, the grain size of the film increases, the surface becomes smoother, and the crystallinity improves. Hall effect results demonstrate that both the MAPbI3: Na thin films and single crystals change their quasi-insulating intrinsic conductivity to a highly conductive p-type conductivity. The room-temperature photoluminescence (PL) peaks of doped MAPbI3 films slightly blue shift, while the photocarriers' lifetime becomes longer. The optical fingerprints of the doped levels in MAPbI3: Na perovskites can be identified by temperature-dependent PL. Obvious fingerprints of Na-related acceptor (A0X) levels in the doped MAPbI3: Na were observed at 10 K. These results suggest that sodium doping is an effective way to grow highly conductive p-type MAPbI3 perovskites.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CLAYS AND CLAY MINERALS
·
2020
·Vol. 67
·期 6
·461-470
·
IF 1.507
Zhao Shun-Ping,Guo Yu,Zhu Miao-Miao,Wang Jie,Feng Xiao-Liang,Qiao Qiao,Xu Heng
The construction of organic-inorganic hybrid ferroelectric materials with larger, high-polarity guest molecules intercalated in kaolinite (K) faces difficulties in terms of synthesis and uncertainty of structure-property relationships. The purpose of the present study was to optimize the synthesis method and to determine the mechanism of ferroelectric behavior of kaolinite intercalated with p -aminobenzamide (PABA), with an eye to improving the design of intercalation methods and better utilization of clay-based ferroelectric materials. The K-PABA intercalation compound (chemical formula Al 2 Si 2 O 5 (OH) 4 ∙(PABA) 0.7 ) was synthesized in an autoclave and then characterized using X-ray diffraction (XRD), infrared spectroscopy (IR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The experimental results showed that PABA expanded the kaolinite interlayer from 7.2 Å to 14.5 Å, and the orientation of the PABA molecule was ~70° from the plane of the kaolinite layers. The amino group of the PABA molecule was close to the Si sheet. The presence of intermolecular hydrogen bonds between kaolinite and PABA and among PABA molecules caused macro polarization of K-PABA and dipole inversion under the external electric field, resulting in K-PABA ferroelectricity. Simulation calculations using the Cambridge Sequential Total Energy Package ( CASTEP ) and the ferroelectricity test revealed the optimized intercalation model and possible ferroelectric mechanism.
✓ 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）