CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jiawei Mu,Miao Yu,Bo Zhao,Yan Dai,Tiantian Li,Xiangcun Li,Xinhong Qi,Xuri Wang,Gaohong He
Optimizing Zn 2+ dispersion and regulating Zn 2+ deposition is a key issue in the aqueous Zn-ion anodes. Herein, the flexible membrane (CNT/PAN/Ag) with uniformly interwoven pores was facilely fabricated by one-step phase inversion method. The complex woven pore structure can effectively disperse the flow of Zn 2+ , reduce current density of nucleation sites, and avoid the aggregated deposition of Zn 2+ . Furthermore, the scalable Janus membrane with different affinities to electrolyte on the two sides can be designed based on the membrane surface structure. The high wettability of the upper surface of the membrane with electrolyte facilitates rapid transfer of Zn 2+ flux into the membrane for redispersion, and low wettability of the back surface is benefit to isolate electrolyte from surface of the zinc anode and to avoid side reactions brought about by the aqueous electrolyte. Meanwhile, by virtue of the high adsorption energy with Zn 2+ , the doped Ag active sites in the membrane further extend the dispersion path of Zn 2+ within the membrane and induce portion of Zn 2+ to be deposited within the membrane, balancing and reducing current density at the deposition interface. In the galvanostatic current test of the symmetric battery at 1 mA cm −2 , 0.5 mAh cm −2 , the battery can be stably cycled more than 1000 h, the specific capacity of pouch cell with NH 4 V 4 O 10 reserved 384 mA h/g at 5 Ag −1 after 95 cycles. The work presents a new flexible membrane design for solving the Zn dendrites in aqueous zinc ion batteries.
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高影响因子
Nanoscale
·
2024
·Vol. 16
·期 36
·16933-16941
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IF 5.8
Xinyu Feng,Siwen Zhang,Jiazhuo Li,Yingfang Hu,Rongyuan Ge,Yaowen Shi,Yali Yao,Bosi Yin,Tianyi Ma
Ni3(NO3)2(OH)4 has a high theoretical specific capacitance, low cost, and environmental friendliness, making it a promising electrode material. Specifically, Ni3(NO3)2(OH)4 electrodes have a larger layer spacing (c = 6.898 Å) than Ni(OH)2 electrodes since NO3− has a much larger ionic radius than OH−. The larger layer spacing stores more electrolyte ions, significantly improving the electrochemical activity of the electrodes. Additionally, the interlayer NO3− can enhance the structural stability of Ni3(NO3)2(OH)4. However, since Ni3(NO3)2(OH)4 has a higher molar mass than Ni(OH)2, it has a lower theoretical specific capacity. Consequently, Ni3(NO3)2(OH)4 has not been used in zinc-based alkaline batteries. Studies showed that doping could enhance the electrochemical performance of electrode materials. Therefore, this study used a simple solvothermal reaction to synthesize yttrium-doped Ni3(NO3)2(OH)4 (Y-Ni3(NO3)2(OH)4), assembling a Y-Ni3(NO3)2(OH)4//Zn battery for electrochemical testing. Y-Ni3(NO3)2(OH)4 served as the cathode in the battery. The analysis of Y-Ni3(NO3)2(OH)4 showed that yttrium (Y) doping increased the specific surface area and pore size of Ni3(NO3)2(OH)4 significantly. The increased specific surface area improved the active material utilization, and the abundant mesopores facilitated OH− transport, substantially enhancing the battery's specific capacity and energy density. Ultimately, the specific discharge capacity of the advanced Y-Ni3(NO3)2(OH)4//Zn battery reached 177.97 mA h g−1 at a current density of 4 A g−1, nearly doubling the capacity of the earlier Ni3(NO3)2(OH)4//Zn battery (103.59 mA h g−1).
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PubMed
高影响因子
RARE METALS
·
2025
·
IF 11
Gong Qian,Cunha João,Zhao Liming,Yu Zhipeng,Zhang Xiaoyu,Luo Shunrui,Lashari Najeeb ur Rehman,Wang Xiaona,Zhou Yurong
Zn-ion hybrid supercapacitors (ZHSCs), as emerging energy storage systems, combine high energy and power density with cost-effectiveness and safety, attracting significant attention. However, due to the inherent energy storage mechanism and the diminishing marginal benefits of increased porosity on capacitance, engineering porous nanostructures to develop carbon materials with ideal architectures is crucial for achieving high performance. Herein, a novel web-in-web porous carbon/carbon nanotubes (CNTs) composite has been proposed, fabricated by a simple phase separation method and two-step carbonization. During pre-oxidation, gradual air oxidation induces the formation of an O, N co-doped polymer-chain template, which subsequently transforms into a graphitized web during high-temperature carbonization. The optimized web-in-web structure, enriched with abundant active sites, accelerates mass transport and charge transfer kinetics. When assembled in ZHSCs, the web-in-web cathode achieved a high area capacitance (14,309 mF cm −2 ) with high mass loading (38.2 mg cm −2 ). It delivered excellent high-rate performance at 50 mA cm −2 with a capacitance retention of 83% after 10,000 cycles, also boosting a high energy density (1452.7 μWh cm −2 ) and power density (30.8 mW cm −2 ). Furthermore, ex situ characterization and in situ electrochemical analyses reveal hybrid energy storage mechanisms, involving both physical/chemical adsorption and precipitation/dissolution across different potential regions. This study provides a promising strategy for designing high-area-capacitance carbon cathodes boosting high-performance ZHSCs. Graphical
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高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Shakeel Abbas,Tanveer H Bokhari,Amina Zafar,Saqib Javed,Shafqat Karim,Hongyu Sun,Shafqat Hussain,Atia Khalid,Yanlong Yu,Rao Tahir Ali Khan,Inayat Ullah,Amjad Nisar,Mashkoor Ahmad
In this work, Zn-doped δ-MnO 2 (ZnMO) flower-like nanostructures on carbon fibers are synthesized by one-pot hydrothermal method . It is found that insertion of Zn ions induces oxygen vacancy defects, increase in active sites and conductivity of δ-MnO 2 (MO) structure. These features making ZnMO structure an excellent candidate for the fabrication of electrode material for supercapacitors . It has been revealed that ZnMO@CC electrode delivered an enhanced specific capacitance of 667 F g −1 at a current density of 1 A g −1 as compared to the pristine δ-MnO 2 and previously reported nanostructures . The developed asymmetric coin cell supercapacitor (ZnMO//AC) obtained a specific capacitance of 116 F g −1 at 1 A g −1 and achieved an outstanding energy density of 71.5 Wh kg −1 at a power density of 1067.1 W kg −1 . Moreover, the device retains its initial capacitance of 92 % after 8000 cycles at 8 A g −1 . These results suggest that ZnMO could be an emerging electrode material for the fabrication of high-performance supercapacitors for practical applications. This research hunts for new visions for the preparation of MnO 2 -based material by doping strategy for energy storage applications, especially supercapacitor.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Fengzhou Yuan,Zhe Chen,Huan Zhang,Yachao Jin,Li Song,Mingdao Zhang
Owing to the unique structure and physicochemical properties, including high specific surface area , self-doped N atoms, open pore structure and good chemical stability, zeolitic imidazolate frameworks (ZIFs) and their derivatives have been widely used in the field of energy storage. Here, a new type of "cocoon"-like Zn/N doped ZIF-derived porous carbon (Zn@N-C-800) is synthesized as an anode for lithium-ion batteries (LIBs) and sodium ion batteries (SIBs) through a one-step carbonization process using a novel Zn-ZIF as the precursor. In Zn@N-C-800, the "cocoon"-like disordered carbon skeleton is conducive to electrolyte infiltration, while the Zn/N doping can provide additional active sites for ion storage. Benefiting from these unique structural characteristics, Zn@N-C-800 achieves excellent electrochemical performances as anode for both LIBs and SIBs: an ultrahigh rate capability of 352 mAh g −1 can be delivered at 12.8 A g −1 for LIBs; an outstanding long-term cycling stability (312 mAh g −1 at 1 A g −1 after 2000 cycles) can be achieved for SIBs. This paper provides new ideas for the design and preparation of high-performance anodes for LIBs and SIBs.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yuan Li,Hanyu Zhao,Bing Xiao,Zhiwei Huang,Yuan Cui,Yuqin Ma,Heng-Guo Wang
The severe dendrite growth and complex by-products of zinc metal anodes greatly hinder the development of aqueous zinc-ion batteries (AZIBs). In this paper, a nitrogen-rich quinazoline-based porous organic polymer coating (hexaazatriph-enylenehexacarbonitrile-800, HAT-CN-800) was prepared to solve these problems. The HAT-CN-800 coating can adjust the uniform Zn 2+ transport path to achieve uniform zinc deposition. In addition, abundant zincophilic N sites enhance the deposition kinetics of Zn 2+ . Therefore, with the HAT-CN-800 coating providing protection, the symmetrical cell can sustain a service life of over 2000 h at a current density of 0.5 mA cm −2 , which is approximately 10 times longer than the lifespan of the bare zinc anode. In addition, the full cell assembled with ammonium vanadate still operates normally after 1000 cycles, which is better than the bare zinc anode. This study offers a hopeful approach to design porous organic polymer coatings to solve the anode problem of AZIBs.
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高影响因子
Carbon Energy
·
2025
·
IF 24.2
Mengmeng Ma,Runkang Lin,Kaige Huang,Shizhong Yue,Maohong Fan,Zhijie Wang,Shengchun Qu
Functionalization has emerged as a pivotal endeavor to tailor the surface properties of photocatalysts. We propose a facile amine functionalization strategy to establish a Cu−In−Zn−S (CIZS)/NiS x hybrid with covalent bonds using individual ethylenediamine (EDA) molecules. Our approach witnesses a remarkable photocatalytic hydrogen evolution (PHE) competence of 65.93 mmol g −1 h −1 driven by visible light, the highest value yielded by CIZS to date. X-ray absorption spectra of CIZS and density functional theory (DFT) calculations confirm the crucial amine N→Cu coordination after amine functionalization. The new emerging coordination via lone-pair electron donation profitably accesses the regulation of the coordination environment, electronic structures, and carrier behavior. Moreover, individual EDA molecule with two-terminal −NH 2 group serves as a molecular bridge to hybrid CIZS and NiS x cocatalyst via N→Cu and N→Ni coordination, favorably promoting efficient charge transport. This study provides advances in practical functionalizing photocatalysts.
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高影响因子
ENERGY
·
2025
·
IF 9.4
Run-Sheng Zhai,Chen-Yu Li,Hui Huang,Guang-Ping Zhang
The development of metal-organic framework (MOF)-derived porous carbon materials, specifically CoZn/NC, for supercapacitors is achieved through a one-step annealing process of the precursor ZIF-67@ZIF-8, which has a distinctive flower-like structure. The flower-like structure is formed under the influence of the introduced SO 4 2− , which accelerates the nucleation of ZIF-67. This process enables the CoZn/NC material to combine the advantages of a balanced pore size distribution, a high specific surface area, and high nitrogen content. As a result, the electrical energy storage is improved and pseudocapacitance is introduced. Furthermore, characterization results indicate that moderate amounts of carbon nanotubes grow on the surface of the carbon material. This growth is facilitated by the catalysis of cobalt nanoparticles and the synergistic effects of zinc. These carbon nanotubes help form an excellent conductive network. Electrochemical tests reveal that the specific capacitance of the CoZn/NC carbon material reaches 324.1 F g −1 at a current density of 0.5 A g −1 and retains 98.8 % of its initial capacitance after 14000 cycles at 10 A g −1 . Additionally, the CoZn/NC material, when assembled into symmetrical capacitors, achieves an energy density of 16 Wh kg −1 at a power density of 300.8 W kg −1 , surpassing the performance of most other electrode materials derived from MOF-based porous carbon reported in the literature.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shuqi He,Yaozhi Liu,Hong Wu,Wenjun Zhao,Zhiqing Xue,Yue Zhang,Sibo Wang,Jing Wang,Xiao-Xia Liu,Xiaoqi Sun
Rechargeable aqueous Zn-MnO 2 batteries are promising for large-scale energy storage. A two-electron transfer reaction of MnO 2 /Mn 2+ is available for the cathode, delivering a high theoretical capacity of 616 mAh g −1 . However, this process requires protons, and its practical contribution in conventional mildly acidic zinc batteries is limited. Herein, an organic redox mediator of Tiron is demonstrated to realize dominant two-electron transfer energy storage in MnO 2 cathode materials. The reversible hydroquinone/benzoquinone redox couple of Tiron allows facile spontaneous chemical reaction with MnO 2 to generate Mn 2+ as well as electrochemical redox in zinc cells according to combined in situ/ex situ analysis. Theoretical calculations further reveal that Tiron reduces the energy required for Mn release from the MnO 2 lattice. Therefore, Tiron not only boosts the two-electron reaction of MnO 2 but also reactivates any dead materials. Thanks to these effects, the MnO 2 cathode achieves a high capacity of 525 mAh g −1 at 0.3 A g −1 , far exceeding 384 mAh g −1 in the baseline system. The lifespan also extends four times to 12 000 cycles at 5 A g −1 together with stable capacity retention. This work presents an effective strategy to encourage the high-capacity reaction path of MnO 2 cathodes in aqueous zinc batteries.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Xianghui Meng,Yuanjie Zhang,Zhiqiang Wang,Zihan Wang,Huiqing Zhao,Ting Wang,Zongge Li,Wenjun Kang,Haibo Li
A defect-rich carbon catalyst with highly dispersed Fe/Zn/Ce species (FeZnCe-NC-1000) is synthesized via a controllable high-temperature pyrolysis strategy. Electrochemical characterizations reveal that FeZnCe-NC-1000 exhibits enhanced oxygen reduction reaction activity in 0.1 M KOH, featuring favorable kinetics and a dominant 4-electron transfer pathway. It also shows excellent durability with minimal performance degradation after 5000 cycles and strong methanol tolerance. When integrated into zinc-air batteries, FeZnCe-NC-1000 outperforms commercial Pt/C, delivering superior open-circuit voltage, discharge rate performance, specific capacity, and maximum power density. These results demonstrate that FeZnCe-NC-1000 is a promising non-precious metal catalyst with great potential for practical applications in energy conversion and storage systems.
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高影响因子
Energy & Environmental Science
·
2022
·Vol. 15
·期 4
·1682-1693
·
IF 39.714
Huili Peng,Changhui Liu,Nana Wang,Chenggang Wang,Dongdong Wang,Yanlu Li,Bo Chen,Jian Yang,Yitai Qian
Zinc anodes in aqueous batteries always suffer from severe electrochemical corrosion and terrible dendrite growth. These issues could be alleviated by using hydrophobic polymers and ion-conductive inorganics together as an artificial layer. However, inorganics without special modifications always show an inferior compatibility with hydrophobic polymers, thus leading to a loose and porous layer and a limited inhibition of side reactions. Here, monodisperse hexagonal nanoplates of α-ZrP are intercalated by n-butylamine, successfully improving the compatibility with N-methyl pyrrolidone and poly(vinyldene fluoride) usually used as a recipe for artificial layers. The obtained layer on Zn is dense and robust, thus reducing the direct exposure of Zn to electrolytes and well suppressing the side reactions. This intercalation also increases the interlayer spacing and improves the charge transfer, enriching the future selection of conductive inorganics. Hence, the electrochemical performances are much better than those of bare Zn and untreated α-ZrP. Finally, a similar enhancement is confirmed in other layered structures, demonstrating the promising prospects of this strategy.
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高影响因子
Small
·
2021
·Vol. 17
·期 35
·2101720
·
IF 13.281
Yijie Wang,Aoshuang Li,Chuanwei Cheng
Developing highly active, cost-effective, and durable bifunctional oxygen electrocatalysts is an important step for the advancement of rechargeable Zn–air batteries (ZABs). Herein, an efficient bifunctional oxygen electrocatalyst of ultrathin Co(OH) 2 nanosheets supported on nitrogen-doped carbon nanoflake arrays (named as Co(OH) 2 @NC), is reported, which yields excellent bifunctional activity, i.e., a low overpotential of 285 mV to reach 10 mA cm −2 for oxygen evolution reaction (OER), a high half-wave potential (0.83 V) for oxygen reduction reaction (ORR), and a low potential gap (Δ E ) of 0.69 V. The excellent bifunctional catalytic performance can be ascribed to the concerted efforts of cobalt hydroxide toward OER and nitrogen-doped carbon for ORR. The Co(OH) 2 @NC nanoflake arrays is further used as binder-free air cathodes for rechargeable Zn–air batteries, exhibiting a high specific capacity of 798.3 mAh g Zn −1 , improved stability (a working life of >70 h at 5 mA cm −2 ), as well as a reduced long-term charging voltage, which outperforms the counterparts of NC nanoflake arrays and Pt/C-based air cathodes. One step further, the Co(OH) 2 @NC nanoflake arrays on carbon cloth are directly used as binder-free air cathodes for flexible, solid-state ZABs, showing excellent performance under deformation as well.
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高影响因子
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