Chemistry-An Asian Journal
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2024
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IF 3.5
Han Shi,Hui Pan,Peng Kang
Severe dendrite growth on Zn anodes poses a significant challenge to the development of Zn-based batteries. An effective strategy for inhibiting the formation of Zn dendrites involves electrode modification. In this study, hollow nitrogen-doped carbon spheres (HNCS) are synthesized and used as electrodes to regulate Zn deposition in Zn-based flow batteries. The electrochemical performance of HNCS reveals that the pyrrole nitrogen of HNCS changes the electrode surface state. Therefore, HNCS can inhibit the hydrogen evolution reaction and achieve uniform Zn deposition. HNCS can effectively inhibit dendrite growth and improve the reversibility of the Zn plating/stripping process to regulate the reversibility of Zn-based batteries. The zinc–bromine redox flow battery assembled with HNCS significantly reduces the hydrogen evolution reaction and exhibits a coulombic efficiency of 90% and energy efficiency of 73% at a current density of 60 mA cm–2. Similarly, an alkaline zinc–iron flow battery can maintain high Coulombic efficiency and energy efficiency of 83%.
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Batteries-Basel
·
2024
·Vol. 10
·期 12
·416
·
IF 4.6
Jiazhe Cheng,Kai Wang,Xiaoyu Ning,Jichao Zhang,Hao Jia,Benjamin Tawiah,Shouxiang Jiang
Aqueous zinc-ion batteries (AZIBs) are increasingly being acknowledged as a promising candidate to safely power large-scale energy storage systems and portable devices. However, the development of effective separator materials remains a significant challenge due to issues such as harmful dendrite growth on zinc (Zn) anodes and parasitic side reactions in aqueous electrolytes. To address this challenge, we synthesize a manganese-coordinated cellulose nanofibril (Mn-CNF)-based separator for high-performance AZIBs. This separator affords enhanced ion transport channel, a large number of hydroxyl groups, and exceptional mechanical properties, with a tensile strength of 2.8 MPa and superior ionic conductivity of 5.14 mS·cm−1. These attributes collectively enhance Zn-ion transport, minimize nucleation overpotential for Zn, and accelerate the Zn deposition kinetics, thus significantly outperforming the untreated CNF separators. Consequently, the Zn||MnO2battery with the Mn-CNF separator shows a marked improvement in the galvanostatic rate performance and cycling stability by effectively accelerating and optimizing Zn-ion transport. This study offers valuable insights into the development of efficient and reliable separators for advanced electrochemical energy storage technologies.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Shu-Tai Zhang,Yu Meng,Peng-Xiang Hou,Chang Liu,Feng Wu,Jin-Cheng Li
The development of cost-effective, high-activity and stable catalysts to accelerate the sluggish kinetics of cathodic oxygen reduction/evolution reactions (ORR/OER) plays a critical part in commercialization application of rechargeable Zn-air batteries (RZABs). Herein, a multiscale nanoengineering strategy is developed to simultaneously stabilize Co-doped Fe nanoparticles originated from metal-organic framework-derived approach and atomic Fe/Co sites derived from metal nanoparticle-atomized way on N-doped hierarchically tubular porous carbon substrate. Thereinto, metal nanoparticles and single atoms are respectively used to expedite the OER and ORR. Consequently, the final material is acted as an oxygen electrode catalyst, displaying 0.684 V of OER/ORR potential gap, 260 mW cm -2 of peak power density for liquid-state RZAB, 110 mW cm -2 of peak power density for solid-state RZAB, and 1000 charge-discharge cycles without decay, which confirms great potential for energy storage and conversion applications.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2018
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IF 2.88
Haipeng Diao,Lixia Guo,Wen Liu,Liheng Feng
A conjugated polymer probe comprised of fluorene , quinolone and benzothiazole units was designed and synthesized by the Suzuki coupling reaction. Through the studies of photophysical and thermal properties, the polymer displays blue-emitting feature and good thermal stability. A ratiometric fluorescence signal of the probe for Zn(II) was observed in ethanol with a new emission peak at 555 nm. The probe possesses a high selectivity and sensitivity for Zn(II) during familiar metal ions in ethanol. The detection limit of the probe for Zn (II) is up to 10 −8 mol/L. The electron distributions of the polymer before and after bonding with Zn (II) were investigated by the Gaussian 09 software, which agreed with the experimental results. Noticeably, based on the color property of the probe with Zn(II), a series of color test paper were developed for visual detecting Zn(II) ions. This work helps to provide a platform or pattern for the development of polymer fluorescence probe in the chemosensor field.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Zhengyan Hao,Yong Xu,Xijia Yang,Xuesong Li,Yang Gao,Liying Wang,Wei Lü
Zinc-ion hybrid supercapacitors (ZIHSCs) are emerging as a promising energy storage device, combining the benefits of traditional batteries and capacitors, including high energy density, incredible power density, a wide voltage window, and excellent capacity retention. In this study, a Cu²⁺ and Zn²⁺ co-doped needle-like tunnel-structured α-MnO₂ material is proposed as the cathode (Cu-Zn-MnO₂@CC), which is grown on an acid-treated flexible carbon cloth substrate using a simple hydrothermal synthesis method. Along with an anode made of super-mesoporous activated carbon derived from waste rice husks (ACrh@CC). The synergistic effect of the co-doping stabilizes the nanowire tunnel structure and provides more active sites. As a result, the Cu-Zn-MnO₂@CC//2 M ZnSO₄//ACrh@CC ZIHSC achieves an ultrahigh specific capacitance of 1241.85 mF cm⁻² at 1 mA cm⁻², representing an improvement of more than 50 % in performance compared to with conventional MnO₂@CC ZIHSC. And a maximum areal energy density of 689.9 μWh cm⁻² at a power density of 1 mW cm⁻². After 20,000 cycles, it retains 86.35 % of its initial capacitance. Furthermore, the assembled flexible device achieves a specific capacitance of 1070.21 mF cm⁻² at 1 mA cm⁻². This device can provide long-term power for electronic devices such as digital watches and timers. The study offers crucial understanding regarding structure of ZIHSC electrode materials and opens up possibilities for their potential applications.
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E-POLYMERS
·
2024
·Vol. 24
·期 1
·
IF 3.2
Xiang Luo,Yuqing Yang,Mingdi Yang,Kehua Zhang,Yuxi Xian,Ping Wang,Hongliang Xu,Xianhai Hu
Polymer-based transition metal complexes have attracted much attention in many fields of application. In this article, a fluorescent polymer-based transition metal complex was prepared by bonding the transition metal complex with the polymer. First, Schiff base salicylaldehyde ethanolamine (HL) as a ligand was prepared by the reaction of salicylaldehyde with ethanolamine. Then, salicylaldehyde glycolamine Zn( ii ) transition metal complexes (ZnL 2 ) were synthesized with HL and Zn 2+ as the central ion. Finally, a blue fluorescent waterborne-based polyurethane Zn( ii ) complex (ZnL 2 -WPU) with an antibacterial function was prepared with ZnL 2 as a chain extender by modified acetone method. The characteristics of fluorescence, heat stability, and bacteriostasis were characterized. Compared with ZnL 2 , the UV–vis absorption peak of ZnL 2 -WPU shows a blue shift of about 20 nm. ZnL 2 -WPU has a strong blue fluorescence emission at 450 nm, and the intensity increases significantly with ZnL 2 content. Surprisingly, the fluorescence lifetime of ZnL 2 -WPU is obviously increased, reaching more than one time that of ZnL 2 . Interestingly, the antibacterial efficiency of ZnL 2 -WPU against E. coli reached an incredible 99%. More importantly, ZnL 2 -WPU uses water as the dispersing medium, which is more environmentally friendly.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Chen Ze,Wang Tairan,Wu Zhuoxi,Hou Yue,Chen Ao,Wang Yanbo,Huang Zhaodong,Schmidt Oliver G.,Zhu Minshen,Fan Jun,Zhi Chunyi
The high redox potential of Zn 0/2+ leads to low voltage of Zn batteries and therefore low energy density, plaguing deployment of Zn batteries in many energy-demanding applications. Though employing high-voltage cathode like spinel LiNi 0.5 Mn 1.5 O 4 can increase the voltages of Zn batteries, Zn 2+ ions will be immobilized in LiNi 0.5 Mn 1.5 O 4 once intercalated, resulting in irreversibility. Here, we design a polymer hetero-electrolyte consisting of an anode layer with Zn 2+ ions as charge carriers and a cathode layer that blocks the Zn 2+ ion shuttle, which allows separated Zn and Li reversibility. As such, the Zn ‖ LNMO cell exhibits up to 2.4 V discharge voltage and 450 stable cycles with high reversible capacity, which are also attained in a scale-up pouch cell. The pouch cell shows a low self-discharge after resting for 28 days. The designed electrolyte paves the way to develop high-voltage Zn batteries based on reversible lithiated cathodes.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2024
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IF 2.6
Wei Kaijun,Zhang Shihong,He Yi,Li Hongjie,Zhou Huilian,Li Zhiyuan,Xu Shijun,Chen Quangang,Cheng Xingtao
Zinc-nickel (ZN) coatings were deposited on N80 steel substrates using pulsed electrodeposition. The current density of the two-step electrodeposition process was adjusted to promote the formation of micro/nanostructures on the coating surface. Superhydrophobic coatings were obtained by using appropriate current parameters and subsequent modification of the coatings with hexadecyltrimethoxysilane. The results showed that the coating achieved a water contact angle of 157 ± 1° and a sliding angle of 6 ± 1°, indicating that the superhydrophobicity was successfully constructed. In addition, electrochemical tests confirmed the coating’s excellent corrosion resistance. Compared with other samples, the corrosion current density of the coating in 3.5 wt% NaCl solution was significantly reduced, the corrosion inhibition rate reached 94.41%, and the impedance modulus in the low-frequency region of the Bode plot was improved by one order of magnitude compared with that of the blank sample. In conclusion, the prepared superhydrophobic coating has good hydrophobicity and corrosion resistance and has a broad industrial application prospect.
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MICROPOROUS AND MESOPOROUS MATERIALS
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2024
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IF 4.8
Ying Zhang,Qinqin Wang,Mingyuan Zhu,Bin Dai
The prevailing Zn/AC catalysts was plagued by limited lifetime and difficulties in regeneration for acetylene acetoxylation. In order to exploring renewable catalyst for acetylene acetoxylation, Zn/S-1 catalyst was synthesized using Silicalite-1(S-1) as support. The catalytic performance of Zn/S-1 was compared with Zn/AC catalyst using active carbon as support. The CH 3 COOH conversion of Zn/S-1 catalyst only decreased 15 % after running 225 h, much better than the 66 % of Zn/AC after 154 h. TG analysis revealed that the improved stability of Zn/S-1 catalyst was attributed to its better resistance for carbon deposition with the presence of S-1 support. A series of characterizations and DFT results elucidated that the Lewis acid sites of S-1 support and Zn component serve as dual active sites, which enhanced the adsorption of CH 3 COOH and inhibited the carbon deposition. In addition, the deactivated Zn/S-1 catalyst could be regenerated by calcination in air atmosphere due to the thermal stability of S-1, and the regenerated Zn/S-1 catalyst showed similar catalytic activity with the fresh catalyst.
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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2025
·Vol. 122
·期 33
·e2501935122
·
IF 9.1
Chuan Li,Bochun Liang,Ze Chen,Rong Zhang,Huilin Cui,Yanbo Wang,Qing Li,Chao Peng,Jun Fan,Zengxia Pei,Chunyi Zhi
The practical applications of aqueous Zn||MnO2 batteries are limited by their small areal capacity, low discharging plateau, and clumsy packing device. Currently, the high potential MnO2/Mn2+ redox conversion can only be well activated in electrolytes with a very low pH value, which is not friendly to the Zn metal anode. To overcome these limitations, we have designed mild amphiphilic hydrogel electrolytes (AHEs) with a wide electrochemical stability window (ESW) and high ionic activity. The design is based on the mechanism that trace amounts of hydrophobic moieties enhance the hydrogen bonding between hydrophilic groups and water molecules in the hydrogel electrolytes. The developed AHE possesses an ESW up to ~3.0 V even at a high water content of ~76 wt%. The assembled Zn||MnO2 pouch cells using the hydrogel electrolytes demonstrated a large areal capacity of ~5 mAh cm−2 at 1 mA cm−2 and a high-voltage and flat discharging plateau of ~1.9 V. Furthermore, a pouch cell with an area of 40 cm2 was fabricated, exhibiting a capacity of ~125 mAh at 2 mA cm−2. Two pouch cells (25 cm2) in series were used to drive a 3.7 V-powerable electric fan. This work highlights the rational design of wide-ESW AHEs with high ionic activity as a promising approach to achieving portable and scalable applications of aqueous high-voltage Zn||MnO2 batteries.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Tinglei Huang,Beier Peng,Yuandi Zeng,Zhao Lu,Yufen Hu,Min Chen
The zinc anode in alkaline Zn-MnO 2 primary batteries suffers from high reactivity causing passivation, corrosion and low active-material utilization, affecting performance and durability. Herein, we introduce mannitol, a hydroxyl-rich organic molecule, as a dual-functional electrolyte additive to simultaneously optimize the solvation structure and suppress zinc corrosion in alkaline Zn-MnO 2 batteries. Theoretical calculations and experimental analyses reveal that the hydroxyl moieties in mannitol disrupt the original hydrogen-bond network, elevate the energy barrier of the hydrogen evolution reaction (HER), and mitigate parasitic water splitting. Concurrently, mannitol enhances interfacial corrosion resistance via chemisorption on the zinc anode surface and promotes the formation of a complex and dense passivation layer. The optimized electrolyte delivers a 12.3% increase in discharge capacity at 10 mA (25°C), with a corresponding rise in Zn utilization from 55.6% to 62.5%. Furthermore, significantly greater capacity improvements are observed under extreme temperatures: 17.4% at 80°C and 44.4% at -10°C. Additionally, the corrosion efficiency is reduced by 29.6% compared to the blank sample. This study deciphers the mechanism by which polyhydroxy organic molecules optimize the performance of alkaline aqueous batteries through modulating solvation structures and the electrode/electrolyte interface, offering a scalable strategy toward high-performance alkaline Zn-MnO 2 batteries.
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GREEN CHEMISTRY
·
2025
·
IF 9.2
Fusheng Luo,Xin Qi,Qing Wu,Jinlong Zhang,Song Yang,Xiude Liu,Zeyu Yan,Jun Huang
Rampant and uncontrolled detrimental interfacial reactions severely undermine the inherent advantages of zinc (Zn) anodes, thereby impeding the advancement of aqueous zinc-ion batteries (AZIBs). To address this challenge, the integration of eco-friendly macromolecules (RNA and DNA) as additives in the electrolyte facilitates the formation of persistent and stable nucleic acid recognition interfaces, effectively protecting the Zn anode and promoting uniform and healthy interfacial reactions. The rich functional groups and phosphate backbones present in these nucleic acid recognition interfaces engage in strong interactions with Zn2+ ions, leading to the establishment of a homogenous interfacial ionic environment and optimized flux within the AZIBs. Consequently, these enhanced Zn anode interfaces exhibit not only high Coulombic efficiency and impressive rate performance in symmetric and half-cells, but also superior long-cycle performance in full cells. This research provides valuable insights into achieving uniform and healthy interfacial reactions for AZIBs, paving the way for their further advancement.
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