CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Wenzhe Su,Zanyu Chen,Xingkai Wang,Peng Cui,Minjie Yao,Hui Sun,Hong Zhang,Yida Deng,Xiaopeng Han,Wenbin Hu
Due to high safety and low-cost, aqueous Zn-ion batteries (ZIBs) are expected to be a promising next-generation energy storage technology. Exploiting high capacity and stable cathode materials are extremely important for the development of aqueous ZIBs. However, commercial V 2 O 5 despite its high theoretical specific capacity, suffers from structural instability during charging and discharging, and strong electrostatic forces seriously limit the diffusion of Zn 2+ . Herein, a novel dynamic transport mechanism of Zn 2+ is designed by intercalating organic cations (C 8 H 15 N 2 + ) from ionic liquids into the interlayers of V 2 O 5 . The electrostatic interaction between the C 8 H 15 N 2 + and the V-O layers enhance the structure stability of the layers and increase the interlayer spacing. Meanwhile, the C 8 H 15 N 2 + between the V-O layers reduce the diffusion energy barrier of Zn 2+ and enable the rapid dynamically transport of Zn 2+ . The diffusion coefficient is enhanced by an order of magnitude. The optimized V 2 O 5 cathode exhibits a high capacity of 268 mA h/g at 100 mA/g and excellent cycling stability (over 500 cycles at 200 mA/g with nearly 100 % coulombic efficiency). The home-made pouch cells deliver a high energy density of 310 W h kg −1 . This interesting idea opens up a new research direction for high-energy secondary batteries.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Xuedong He,Yujian Zhang,Juan Wang,Jun Li,Lianghao Yu,Feng Zhou,Juan Li,Xiaojun Shen,Xin Wang,Shun Wang,Huile Jin
Metal compounds encapsulated in carbon materials exhibit promising properties as potential oxygen electrocatalysts. Herein, we first report Fe2N@C derived from the biomass bioaccumulation doping method, which offers a new perspective for exploring oxygen reduction reaction (ORR) electrocatalysts with low cost and high performance. The Fe2N@NCNTs prepared with our biodoping method display excellent ORR activity with a low half-wave potential (E1/2) and long-term stability in a broad pH range. More importantly, a zinc–air battery (ZAB) constructed with Fe2N@NCNTs’ catalysts exhibits a high open-circuit voltage (1.53 V), high peak power density (135 mW cm–2), and excellent stability (over 200 h). The significantly improved ORR performance can be attributed to the high N-doping level and its hierarchically porous structure. This work offers a path for the development of ORR catalysts for environmental governance and efficient energy conversion.
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高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Tian Zhang,Zhiwen Gan,Shujun Zhen,Yongmei Hu,Xiaoli Hu
Due to the well-known side effects on human health caused by 6-Mercaptopurine (6-MP), it is necessary to develop a simple to operate method for determination of 6-MP. In this work, a simple and easy ratiometric fluorescence probe was fabricated based on two kind of quantum dots with different emission. The probe was composed of blue emission carbon dots (CDs) and yellow emission Zn-doped CdTe quantum dots (ZnCdTe QDs) capped with GSH. The fluorescence intensity of ZnCdTe QDs could be selectively quenched by 6-MP based on fluorescence resonance energy transfer (FRET). At the same time, the fluorescence intensity of CDs basically stayed constant, and the fluorescence intensity ratio ( F 445 / F 565 ) showed a linear response to the concentration of 6-MP. The designed probe of ZnCdTe QDs/CDs displayed a wide and comparable detection range from 1.0 to 100.0 μmol L −1 , and the detection limit reached 0.46 μmol L −1 . Furthermore, the method has been realized for monitoring the concentration of 6-MP in human serum samples.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Tianliang Song,Huilian Hao,Yue Zhao,Xu Wang,Changwang Li,Wenyao Li
Zinc ion hybrid supercapacitors (Zn-HSCs), combined with the superiorities of supercapacitors and batteries , are regarded to have evolutive potential in devices of energy storage. Herein, the nitrogen and sulfur co-doped graphene/polyaniline nanoarrays (NSG/PANI) have been successfully compounded by in-situ polymerization. The structural characterization shows that the NSG/PANI-50 nanocomposite possess more active sites and vertically arranged PANI nanoarrays on the surface of NSG. The Zn-HSCs devices assembled by the zinc foil as anode, NSG/PANI-x (x = 30, 50, 70) as cathode and ZnSO 4 as electrolyte (NSG/PANI//ZnSO 4 (aq.)//Zn) show extraordinary energy storage properties. The prepared NSG/PANI-50//Zn device exhibits exceptional specific capacitance of 268.4 F g −1 at 0.1 A g −1 (the retention rate is 75.2% as the current density increased 20-times from 0.1 A g −1 to 2 A g −1 ), high energy density (95.4 Wh kg −1 ) and excellent capacitance retention rate of ~ 93% at 5 A g −1 after 10,000 cycles. The diffusion-controlled behavior (72% of the total storage charge at 5 mV s −1 ) suggests that the diffusion-controlled process acts a momentous role in the process of energy storage. The impressive results demonstrate that NSG/PANI nanocomposite could be a potential high-performance electrode material for Zn-ion hybrid energy systems.
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高影响因子
Advances in Materials Science and Engineering
·
2022
·Vol. 2022
·期 1
·7408284
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IF 2.098
Zhenhao Wei,Yufan Ji,Yiping Huang,Jingjing Huang,Yunguo Huang,Changhai Yue,Junzhou Li,Mingwei Tang,Yunfang Liu,Hanfei Liu,Hao Zhu,Kai Zhu,Fan Yang,Xuedong Zhu
Zinc (Zn) and cerium (Ce) modified hierarchical ZSM-5 (HZ) catalysts were prepared by incipient wetness impregnation, and their catalytic performances in methanol to aromatics reaction were evaluated in a fixed-bed reactor operating at 400°C under 0.1 MPa and WHSV of 1.0 h −1 . The structure, acidity, and state of Zn species of the Zn/Ce modified HZ catalysts were investigated via several characterization techniques, including XRD, NH 3 -TPD, H 2 -TPR, nitrogen adsorption, and XPS. The results showed that the aromatization activity of 2 wt% Zn-modified HZ (2% Zn/HZ) could be significantly enhanced by loading 0.6 wt% Ce, which was mainly attributed to the increase in surface ZnOH + species. Moreover, it was found that Ce inhibited pore blockage caused by Zn. Consequently, compared to 2% Zn/HZ, 2% Zn-0.6% Ce/HZ exhibited higher aromatic selectivity and longer catalyst lifetime.
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高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Hang Yang,Duo Chen,Yicheng Tan,Hao Xu,Li Li,Yiming Zhang,Chenglin Miao,Guangshe Li,Wei Han
Since the electrode/electrolyte interface (EEI) is the main redox center of electrochemical processes, proper manipulation of the EEI microenvironment is crucial to stabilize interfacial behaviors. Here, a finger–paint method is proposed to enable quick physical modification of glass–fiber separator without complicated chemical technology to modulate EEI of bilateral electrodes for aqueous zinc–ion batteries (ZIBs). An elaborate biochar derived from Aspergillus Niger is exploited as the modification agent of EEI, in which the multi–functional groups assist to accelerate Zn 2+ desolvation and create a hydrophobic environment to homogenize the deposition behavior of Zn anode. Importantly, the finger–paint interface on separator can effectively protect cathodes from abnormal capacity fluctuation and/or rapid attenuation induced by H 2 O molecular on the interface, which is demonstrated in modified MnO 2 , V 2 O 5 , and KMnHCF–based cells. The as–proposed finger–paint method opens a new idea of bilateral interface engineering to facilitate the access to the practical application of the stable zinc electrochemistry.
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Haibo Ye,Zhiyong Liu,Xingyue Liu,Bo Sun,Xianhua Tan,Yuxue Tu,Tielin Shi,Zirong Tang,Guanglan Liao
Organic-inorganic lead halide perovskite solar cells have garnered enormous interest in scientific communities due to comparable power conversion efficiencies and solution-processed fabrication techniques. Among them, carbon-based perovskite solar cells seem to be one of the most promising candidates for addressing the stability issue while suffering from inferior efficiency or high processing temperature. Herein, we introduce low-temperature processed Zn-doped SnO 2 (below 200 °C) as an effective electron transport layer in perovskite solar cells for the first time, and demonstrate a low-temperature carbon-based device with Cu-phthalocyanine as hole transport layer. We find that Zn doping contributes to a more suitable energy level alignment and an improved conductivity for SnO 2 films. As a result, the electron transfer and extraction are enhanced and the charge recombination is suppressed. In addition, devices with Zn-doped SnO 2 have a wider depletion region, leading to an enhanced photovoltaic performance . An optimal efficiency of 17.78% can be obtained after 2 mM Zn doping. Furthermore, these devices, introducing highly stable and hydrophobic Cu-phthalocyanine and carbon, maintain almost 100% of their initial efficiencies over 1200 h in ambient air. Our study paves the way for developing highly efficient and flexible carbon-based perovskite solar cells.
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高影响因子
JOURNAL OF CHEMICAL PHYSICS
·
2022
·Vol. 156
·期 1
·
IF 4.304
Lei Xueyan,Fu Zhengping,Xiang Bin,Lu Yalin
The low stability and poor activities of transition metal selenides (TMSs) in alkaline electrolyte limit their application in supercapacitors. Metal doping and hybridization of various electroactive materials with different properties are utilized to enhance the electrochemical performance of TMSs by optimizing their electronic structure and providing rich electrochemical active sites. Herein, we report a simple two-step hydrothermal method for the growth of Zn-doped NiSe 2 and Ni(OH) 2 nanocomposites on Ni foam [Zn–NiSe 2 /Ni(OH) 2 ]. The resulting material delivers high specific capacity (1525.8 C g −1 /564.7 mA h g −1 at 6 A g −1 and 1220 C g −1 at 10 A g −1 ) in a three-electrode system. A Zn–NiSe 2 /Ni(OH) 2 //porous carbon (PC) aqueous asymmetric supercapacitor (ASC) was built by utilizing Zn–NiSe 2 /Ni(OH) 2 as the positive electrode and PC as the negative electrode. This Zn–NiSe 2 /Ni(OH) 2 //PC ASC shows an energy density of 75.8 W h kg −1 at a power density of 916.1 W kg −1 and achieves a specific capacity retention of 100% after 25 000 cycles at 10 A g −1 . These results reveal that the Zn doping and the hybridization of NiSe 2 with Ni(OH) 2 can obtain impressive electrochemical properties in ASCs.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2020
·
IF 4.192
Jianghua Zhang,Ke Cheng,Hongyan Li,Fawen Yin,Qiaoe Wang,Li Cui,Shasha Yang,Jinggang Nie,Dayong Zhou,Beiwei Zhu
Catalytic production of structured phospholipids (SPLs) containing short-chain fatty acids (SCFAs) in an efficient heterogeneous manner is of great importance from the standpoint of food engineering. Herein, a bifunctionalized sulfonated Zn-SBA-15 catalyst was studied for SPL synthesis through interesterification of soybean lecithin with ethyl propionate or methyl butyrate. Various characterization techniques such as pyridine Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and ultraviolet–visible diffuse reflectance spectroscopy were conducted to determine the physicochemical properties, so as to build the possible structure–reactivity relationship of the catalyst. In screening tests with commercial Amberlyst-15 or other SBA-15-type materials, the as-prepared sample showed promising catalytic performance probably owing to its mesoporous structure and cooperative role of Brönsted and Lewis acid sites. Notably, the sample was easily separated and recycled without obvious deactivation. In general, the investigated catalyst was regarded as one of the promising alternatives to otherwise expensive biocatalysts for SCFA-containing SPL production.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xingxing Li,Yanan Ma,Yang Yue,Guosheng Li,Chuankun Zhang,Minglei Cao,Yongchen Xiong,Jintao Zou,Yongheng Zhou,Yihua Gao
In recent years, the metal ion hybrid micro-supercapacitor (MSC) comprised of the battery-type Faradaic cathode based electrode and capacitor-type anode based electrode, can realize both high power and energy density, which becomes one of the most hottest areas of energy device. Herein, we demonstrated a zinc-ion hybrid micro-supercapacitor (ZIHMSC) by designing a Ti 3 C 2 T x MXene based electrode as capacitor-type anode and vanadium pentoxide (V 2 O 5 ) based electrode as battery-type cathode. In addition, the polyacrylamide (PAM) hydrogel where ZnSO 4 dissolved was chosen as the electrolyte, which effectively avoids the security risks, unlike other hybrid MSC based on the organic electrolytes. Meanwhile, the flexible ZIHMSC also exhibits well electrochemical properties, displaying a remarkable capacitance (129 mF cm −2 under 0.34 mA cm −2 ), high energy density (48.9 μWh cm −2 at 673 μW cm −2 ) and well-cycle stability (retaining ~ 77% capacitance after 10,000 cycles). This work supports a prospective routine for constructing the new-generation flexible micro-energy storage systems.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Guochao Wan,Wenhao Sun,Lei Liu,Changming Mao,Zhonghua Zhang,Xiaosong Guo,Guicun Li
Reducing the free radicals associated with electrochemical reactions and the activity of H2O is an effective measure to inhibit side reactions and improve stability for rechargeable aqueous Zn-ion batteries. Herein, methylsulfonylmethane (MSM), a popular dietary supplement for humans, is used as an innoxious and low-cost additive to scavenge free radicals and optimize the coordination condition for aqueous ZnSO4 electrolyte. Profiting from the double effects of MSM, the Zn∥Ti asymmetric cells exhibit excellent stability and display a high Coulombic efficiency (CE) of 99.5% in the aqueous MSM/ZnSO4 electrolyte for 1000 h, and the Zn∥Zn cells achieve a long cycle life of over 2000 h. In addition, MSM can effectively suppress the dissolution of an ammonium vanadate (NVO) cathode. The positive role of MSM is further exhibited in the Zn∥NVO and Zn∥PANI full cells, exhibiting outstanding charge/discharge performance and capacity retention. This work provides a type of innoxious additive for an aqueous electrolyte for aqueous rechargeable zinc-ion batteries.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Jiacheng Yan,Zeming Tang,Binxin Li,Da Bi,Qingxue Lai,YanYu Liang
With the advantages of low cost, non-pollution, and strong controllability over composition, morphology, nanostructures, as well as surface characters, carbon-based nanomaterials are regarded as ideal substitutes of traditional platinum-based catalysts for oxygen reduction reaction (ORR) electrocatalysis in ORR-involved devices. Herein, an in situ ZnO activation-coupled electrospinning strategy was employed to facilely construct nitrogen-doped porous carbon nanofibers (NPCNF) for flexible Zn–air batteries. In situ formation and thermal removal of ZnO make a critical difference in construction of micro/meso-hierarchically porous structures as well as highly active N-doped sites, therefore generating self-standing carbon nanofibers with high nitrogen doping content as well as specific Brunauer–Emmett–Teller of 501 m2/g and 5.6 at. %. As a result, the prepared NPCNF as a self-standing electrode delivers an excellent performance both in alkaline liquid-state and quasi-solid-state Zn–air batteries, giving the possibility of applications in flexible devices.
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高影响因子
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