ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 14
·2008514
·
IF 18.808
Tiancun Liu,Shuangqiang Chen,Weiwei Sun,Li-Ping Lv,Fei-Hu Du,Hao Liu,Yong Wang
Detrimental dendritic lithium (Li) growth, infinite volume expansion of Li deposition and inevitable excess electrolyte consumption have always impeded the successful application of Li metal anodes. Herein, a unique lithiophilic vertical cactus-like framework (LVCF) derived from a Zn/Cu-based coordination polymer through in situ chemical etching of Cu foam is proposed to enhance the safety and electrochemical performance of Li metal anodes. An ingenious strategy of releasing Cu ions from Cu foam in the presence of organic ligands is implemented successfully to achieve the coordination polymer precursor, resulting in the coexistence of massive lithiophilic nitrogen-containing functional groups, ZnO quantum dots and in situ grown carbon nanotubes (CNTs) in the LVCF, which is beneficial to avoiding the generation of harmful Li dendrites. Benefiting from the positive effects of the improved lithiophilicity, decreased local current density and relieved volume expansion, LVCF delivers an ultrastable Coulombic efficiency of 98.6% for 600 cycles at 1 mA cm –2 and an improved cycling lifespan of 1800 h for symmetric cells. Full cells comprising LVCF@Li anodes and LiFePO 4 cathodes can deliver an ultrahigh capacity of 101.8 mAh g –1 (capacity retention ratio: 77.9%) after 900 cycles at 1 C and excellent rate performance.
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Dewei Wang,Zhaorui Sun,Xinliang Han
The exploration of a non-corrosive and sustainable strategy to produce thin graphene-like porous carbon nanosheets with large specific surface area for electrochemical energy storage applications is highly desired yet a huge challenge. Herein, we report a eutectic salt induced self-activation process for the synthesis of a serials of porous carbon nanosheets with well-controlled microstructures just by simply changing the type of eutectic salt. The experiment results illustrated that the in-situ formed Na 2 CO 3 , which is usually “inert” when serves as a chemical activation reagent at relatively low temperature, display a significant enhanced chemical activation in eutectic salt medium. Specifically, thin graphene-like porous carbon nanosheets with a large specific surface of 1739.5 m 2 /g can be obtained in CsCl-NaCl eutectic salt. When acts as a cathode for Zn-ion hybrid supercapacitors (ZSCs), a high specific capacity of 169.1 mAh/g (at 0.1 A/g), large specific energy of 62.24 W h kg −1 (at an ultrahigh specific power of 16 kW g −1 ) and cyclic stability of 91.7 % after 10,000 cycles. In addition, a quasi-solid-state ZSC device, which can freely realize series to increase the working voltage, demonstrated its hold a potential for practical application. This strategy combines the advantages of the in-situ chemical activation with the advantages of the eutectic salt medium, which offers an alternative way for the producing of various functional nanocarbons for a variety of applications including electrochemical energy storage.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 43
·24868-24876
·
IF 10.733
Xiang Chen,Zhenhua Yan,Meng Yu,Hongming Sun,Fangming Liu,Qiyuan Zhang,Fangyi Cheng,Jun Chen
Rechargeable metal–air batteries require nonprecious, efficient, and durable bifunctional electrodes for catalyzing the oxygen reduction/evolution reaction (ORR/OER). Here, we report a facile, scalable synthesis of a self-standing bifunctional electrode with CoMn2O4 (CMO) in situ embedded in nitrogen-doped carbon nanofibers (NCNFs) by electrospinning. Strong coupling between CMO and NCNFs facilitates the multiphase charge transport process. Meanwhile, the conductive carbonaceous network contributes to the overall stability by protecting CMO from corrosion and aggregation. As a result, the nanocomposite exhibits remarkable Pt-like ORR activity (onset/half-wave potential of 1.05/0.83 V) and high OER activity (overpotential of 340 mV at 10 mA cm−2). The rechargeable Zn–air battery assembled with CMO/NCNF delivers a peak power density of 224 mW cm−2 and a low charge–discharge voltage gap of 0.85 V even after 350 cycles at 10 mA cm−2. Furthermore, the assembled bendable solid-state Zn–air battery shows rechargeability, suggesting the promising potential of spinel/carbon hybrids in flexible devices.
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DOI
高影响因子
Arabian Journal of Chemistry
·
2023
·
IF 6
Jia-Hao Gao,Pei-Pei Huang,Jie Liu,Nan Zheng,Dong Wang,Si-Yu Yue,Er-Nu Liu,Quan Liu,Bo Liu,Jiu-Fu Lu
Three new metal coordination polymers with different spatial structure, namely {[Co 2 (H 2 O) 6 (4-PDCA) 2 ] 2 ·3H 2 O} n ( SNUT-12 ), {[Cd(H 2 O) 2 (4-PDCA)]·2H 2 O} n ( SNUT-13 ) and [Zn 2 (4-PDCA) 2 ] n ( SNUT-14 ), where H 2 (4-PDCA) = 1-(4-carboxyphenyl)-5-methyl-4-oxo-1,4-dihydropyridazine-3-carboxylic acid, were synthesized by changing the central ion with the same ligand under solvothermal and hydrothermal conditions, which were further characterized by single crystal X-ray diffraction, powder XRD, FT-IR and TGA . Single crystal X-ray analysis revealed that SNUT-12 exhibits a 1D infinite zigzag chains which were constructed by Cobalt(II) ion and 4-PDCA 2− ligand, SNUT-13 features a 2D ladder-like structure. Meanwhile, SNUT-14 displays 2-fold 3D → 3D parallel interpenetrating frameworks. In addition, SNUT-12 exhibited high electrocatalytic oxygen evolution reaction, and SNUT-13, SNUT-14 showed strong fluorescence at room temperature .
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高影响因子
Biomass Conversion and Biorefinery
·
2022
·
IF 4.05
Wang Dewei,Wang Shuangyu,Sun Jiaqi
Exploration of non-corrosive chemical activation agents that are capable of transforming sustainable biomass into nanocarbon with large specific surface area and suitable heteroatomic content for electrochemical energy storage applications is highly desired. Herein, potassium peroxodisulfate (K 2 S 2 O 8 ) has been proposed as the effective activation agent for the synthesis of N, S co-doped carbon nanosheets (N, S-CNSs) from renewable onions. Different from the other activation agents, it was found that the K 2 S 2 O 8 can act as the physical activating agent and chemical activating agent simultaneously owing to its temperature-dependent decomposition behavior. Consequently, the N, S-CNSs with large specific surface area of 2110.6 \({\mathrm{m}}^{2}{\mathrm{g}}^{-1}\) , optimal oxygen, nitrogen, and sulfur-containing functional groups were rationally emerged. The assembled Zn-ion hybrid supercapacitors with the as-prepared N, S-CNSs delivered a maximum specific capacity of 141.5 mAh \({\mathrm{g}}^{-1}\) , robust cycling stability with 98.3% capacity retention after 20,000 cycles, and large specific energy up to 113.4 Wh k \({\mathrm{g}}^{-1}\) . As explicitly discussed with the relevant characterizations, the study deeply explored the adaptability of the chemical activating agent in general synthesis of porous carbon-based materials from sustainable biomass, and great insight for designing high-performance electrochemical energy storage devices.
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高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Xiaolong Guo,Xiaolin Hu,Dan Wu,Chuan Jing,Wei Liu,Zongling Ren,Qiannan Zhao,Xiaoping Jiang,Chaohe Xu,Yuxin Zhang,Ning Hu
The rational design of excellent electrocatalysts is significant for triggering the slow kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in rechargeable metal–air batteries. Hereby, we report a bifunctional catalytic material with core–shell structure constructed by Co3O4 nanowire arrays as cores and ultrathin NiFe-layered double hydroxides (NiFe LDHs) as shells (Co3O4@NiFe LDHs). The introduction of Co3O4 nanowires could provide abundant active sites for NiFe LDH nanosheets. Most importantly, the deposition of NiFe LDHs on the surface of Co3O4 can modulate the surface chemical valences of Co, Ni, and Fe species via changing the electron donor and/or electron absorption effects, finally achieving the balance and optimization of ORR and OER properties. By this core–shell design, the maximum ORR current densities of Co3O4@NiFe LDHs increase to 3–7 mA cm–2, almost an order of magnitude increases compared to pure NiFe LDH (0.45 mA cm–2). Significantly, an OER overpotential as low as 226 mV (35 mA cm–2) is achieved in the designed core–shell catalyst, which is comparable to and/or even better than those of commercial Ir/C. Hence, the primary zinc–air battery employing Co3O4@NiFe LDH as an air electrode achieves a high specific capacity (667.5 mA h g–1) and first-class energy density (797.6 W h kg–1); the rechargeable battery can show superior reversibility, excellent stability, and voltage gaps of ∼0.8 V (∼60% of round-trip efficiency) in >1200 continuous cycles. Furthermore, the flexible quasi-solid-state zinc–air battery with bendable ability holds practical potential in portable and wearable electronic devices.
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Jiangfu Zheng,Wenbo Li,Rongdi Tang,Sheng Xiong,Daoxin Gong,Yaocheng Deng,Zhanpeng Zhou,Ling Li,Long Su,Lihua Yang
In this study, an investigation is conducted into the degradation of nitenpyram (NTP) using highly efficient APMMO/PDS/Vis system. As photocatalysts, silver phosphate (AP) and calcined Zn–Al layered double hydroxides (MMO) exhibit high efficiency in achieving charge separation. Besides, the injection of electrons into peroxydisulfate (PDS) from the APMMO can contribute to obtaining the species in the active state with higher efficiency. Based on the APMMO/PDS/Vis system, 50 mg/L of nitenpyram (NTP, 50 mL) can be completely removed in 60 min using 0.8 g/L photocatalyst and 0.2 g/L PDS under the optimum condition and visible light (780 nm > λ > 420 nm). Meanwhile, as demonstrated under visible light within 30 min, an ultrahigh degradation efficiency can be achieved by NTP based on APMMO1/PDS/Vis system. Besides, the electron paramagnetic resonance (EPR) technique and radical quenching experiments suggested 1 O 2 , h + , SO 4 − •, •O 2 − , and •OH are all contributory to the removal of pollutants. Given the outcomes achieved by LC/MS system and mass spectrometry, the primary degradation intermediates of NTP end up being converted into photodegradation products (such as 2-Chloropyridine, 6-Chloropurine Riboside and dl -Leucine). Additionally, there are three potential photodegradation pathways to NTP degradation have been deployed. Moreover, the NTP light degradation occurring in APMMO1/PDS/Vis system is competent under the three types of real water sample. Accordingly, the high-efficiency APMMO1/PDS/Vis system is fit for use in water pollution control for agricultural productions.
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DOI
PubMed
高影响因子
Sustainable Energy & Fuels
·
2020
·Vol. 4
·期 9
·4722-4732
·
IF 5.503
Jizhao Zou,Qi Luo,Hongliang Wu,Shiyu Liu,Tongbin Lan,Yuechao Yao,Muhammad Aurang Zeb Gul Sial,Fenglin Zhao,Qi Zhang,Xierong Zeng
Transition metal selenide-based materials have been demonstrated as promising electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), yet the actual design of a highly efficient and stable electro-catalyst based on these materials still remains a long and arduous challenge. Herein, a predesigned hybrid Zn/Co zeolitic imidazole framework was used to fabricate CoSe2/Co nanoheteroparticles embedded within hierarchically porous Co, N co-doped carbonnanopolyhedra/nanotubes (CoSe2/Co@NC-CNTs) through a facile approach involving controlled carbonization and selenization procedures. As expected, the optimized CoSe2/Co@NC-CNT-1 displayed outstanding electrocatalytic performance for the ORR and OER, with an onset potential of 0.95 V vs. RHE, a half-wave potential of 0.84 V vs. RHE for ORR, and a potential of 1.69 V vs. RHE for OER at 10 mA cm−2. It also exhibited excellent long-term stability and methanol resistance ability, which were superior to commercial IrO2 and the commercial 20 wt% Pt/C catalyst. Notably, the assembled Zn–air battery with CoSe2/Co@NC-CNT-1 showed a low charge–discharge voltage gap (0.696 V at 10 mA cm−2) and a high peak power density (100.28 mW cm−2) with long-term cycling stability. These superior performances can be ascribed to the synergistic effects of the highly active CoSe2/Co nanoheterostructure, hierarchically porous structure with a large surface area, high electrical conductivity and uniform doping of the Co and N.
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高影响因子
DYES AND PIGMENTS
·
2020
·
IF 4.613
Xiaojun He,Qi Xie,Jinyi Fan,Chuchu Xu,Wei Xu,Yahui Li,Feng Ding,Hui Deng,Hong Chen,Jianliang Shen
Rationally designed and synthesized Schiff base sensor CMTAH containing coumarin fluorophores by the coupling of coumarin aldehyde and thiophene-2-carbohydrazide and acts as differentially selective chemosensor via colorimetric/ratiometric responses to Cu(II)/Zn(II) ions with fluorescence switchable strategy in aqueous media . Variation in absorption and emission spectra of CMTAH with different metal cations in aqueous media reveal high-affinity binding to Cu(II)/Zn(II) ions over other coexisting cations. Moreover, the spectrometric titrations and Job's plot curves substantiated the stoichiometric ratio of 1:1 for Cu(II)/Zn(II) complexes formation with low detection limits of 141 nM and 72 nM, respectively. Particularly, the responding mechanism of CMTAH toward Cu(II)/Zn(II) ions was investigated by density functional theory calculations. Notably, the molecular logic gates were established with the combination of CMTAH for the intelligentialized recognition of Cu(II)/Zn(II) ions. Additionally, the compatibility and permeability of CMTAH were attributed to Schiff base group, which exhibited remarkable responding and bioimaging in living cells and zebrafish. Notably, CMTAH could be used to image in Drosophila larvae with a clearly visible profile of internal organs and effectively capture Cu(II) and Zn(II) ions in living Drosophila larvae, which lay the foundation of sensors in the field of Drosophila biological imaging research.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Yi-jin Wu,Xiao-hong Wu,Teng-xiu Tu,Peng-fang Zhang,Jun-tao Li,Yao Zhou,Ling Huang,Shi-gang Sun
Efficient bifunctional oxygen electrocatalysts are essential for high-performance rechargeable Zn-air batteries (rZABs). Herein, a porous hollow carbon nanoshell (H-Co@FeCo/N/C) in which FeN x and CoN x metal sites are atomically dispersed and interfaced intimately with metallic Co nanoparticles was derived from pyrolysis of polydopamine-coated ZnCo-ZIFs adsorbed with Fe 3+ ; the chemical interactions among different organic and metal species during the polymer-coating process was inverstigated; their role in regulating the size of the Co nanoparticles, the structure of the hollow carbon nanoshell and the formation of the FeN x -CoN x dual active sites was revealed. The H-Co@FeCo/N/C showed superior bifunctional oxygen electrocatalytic activity (Δ E = 0.698 V) and mass activity of 6.8 A g cat. −1 at 0.9 V, outperforming the commercial Pt/C/RuO 2 catalysts or the Fe/N/C or Co/N/C counterparts. When assembled for rZABs, the H-Co@FeCo/N/C cathode displayed a long cycle life of 200 h ( E gap of about 1.0 V@10 mA cm -2 ).
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Hao Li,Sirong Yu,Jinhui Hu,Xiaoli Yin
Modifier-free superhydrophobic surfaces have attracted much attention since their discovery due to the potential for applications. Although there is an emerging consensus that modifier-free structured hydrophilic surfaces can achieve superhydrophobic , how the surface morphology influence their wettability as well as why modifier-free structured surfaces can achieve superhydrophobic are lacking. In this work, we fabricated many Cu-Zn coatings with various surface morphologies on steel substrate by tuning electrodeposition parameters including the current density , the Zn 2+ /Cu 2+ molar ratio, and the electrodeposition time. We found that these freshly prepared electrodeposited Cu-Zn coatings were superhydrophilic after dried. Interestingly, after storage in air for more than 60 days, these modifier-free hierarchical structured Cu-Zn coatings became superhydrophobic with the maximum water contact angle of 154.73° and the minimum sliding angle of ~6.5°. We experimentally demonstrated that both the hierarchical structure and the chemical composition (the formation of CuO-ZnO and the oxygen adsorption) contribute to the superhydrophobicity of the modifier-free Cu-Zn coating. Furthermore, this modifier-free superhydrophobic Cu-Zn coating presents excellent durability, self-cleaning, anti-corrosion, and anti-scaling properties.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuanwei Chu,Tingting Luo,Jingcheng Li,Hong Zhang,Wenjing Dai,Yingning Zhou,Yijin Zhang,Yaweixue Deng,Bo Zou,Junchen Chen,Yun Huang,Mingshan Wang,Yang Gao,Xing Li
Despite the widely acknowledged and remarkable advantages of aqueous zinc-ion batteries (ZIBs), issues such as uncontrollable dendrite growth and hydrogen evolution reaction, which severely affect their rechargeable stability and cycle life. To address these issues, a dynamic Zn 2+ ions rectification interfacial layer (DRIL) was constructed via in-situ spin coating and crosslinking of hydrophilic borax-modified hydroxypropyl guar gum on the Zn anode (BHPG@Zn). During the process of in-situ crosslinking, BHPG formed a carded molecular chain structure through synergistic crosslinking with borax, which re-regulated the uniform distribution of Zn 2+ ion fluxes at the interface. Leveraging the abundant oxygen-containing functional groups on BHPG, the inherent strong hydrogen-bonding network environment formed by water molecules is disrupted through strong coupling with Zn 2+ ions, thus promoting the transportation and desolvation of Zn 2+ ions. Furthermore, the stronger binding energy and affinity between BHPG and zinc induce the formation of a (002) plane-oriented Zn deposition layer. Based on the DRIL modification, the BHPG@Zn displays stable cycling for over 7100 h at 2 mA cm −2 with coulombic efficiency of 99.3 %, while the AC@Ti||BHPG@Zn zinc-ion capacitor retains a capacity of 65 mAh g −1 after 10,000 cycles at 2 A g −1 .
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