CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Chuntao Yang,Kaiyong Feng,Jiangchang Chen,Ze Liu,Yingjian Yu
The commercial applications of aqueous rechargeable zinc-ion batteries (ZIBs) remain limited mainly owing to the low capacity storage efficiency and structural deformation of cathode materials, coupled with anode dendrite formation and side reactions that compromise battery performance. Herein, the electronically conductive metal-organic framework (EC-MOF) DDA-Cu was developed and used as the cathode for the first time in ZIBs. The electrode material showed an excellent initial discharge capacity of 249.6 mAh g −1 at 0.2 A g −1 . Notably, it also reached a effective capacity of 120 mAh g −1 after 175 cycles at an increased current density of 1 A g −1 . When used as an interface protective coating for zinc anodes, the uniform pore channels of DDA-Cu facilitated homogeneous zinc-ion deposition, which effectively suppressed dendrite growth and side reactions, typically a hydrogen evolution reaction (HER). Compared with bare zinc anodes, the Zn@DDA-Cu anode significantly extended battery lifespan, demonstrating stable cycling for over 3500 h at 0.5 mA cm −2 . Notably, the full battery with a Zn@DDA-Cu anode and a DDA-Cu cathode exhibited stable cycling for 100 cycles at 1 A g −1 , retaining a capacity of 185.5 mAh g −1 . This study provides an innovative strategy for the development of promising EC-MOFs for practical ZIB application.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Yu Deng,Zhengquan Xiao,Dajin Liu,Shilin Wu,Jiahang Zou,Zhipeng Jiang,Yongtao Li
Aqueous zinc-iodine batteries (AZIBs) are considered a very promising way to store energy. However, inherent issues such as cathodic slow I₂/I⁻ redox kinetics and anodic zinc (Zn) dendrite growth, limit the practical application of AZIBs. Here, we used just a trace amount of the electrolyte additive cesium iodide (CsI) for homogeneous deposition of Zn 2+ and enhanced cathode kinetics in AZIBs. The introduction of Cs + produces electrostatic shielding layers that regulate the homogenization of Zn 2+ deposition. Besides, I - promotes cathodic kinetics to achieve the effect of increasing the battery capacity. Electrochemical tests show that by adding 5 mM trace CsI to the Zn-Zn symmetric cell, the cycling time was increased to 650 h, and the Zn-Cu half-cell's cycling time was increased to 3000 cycles under conditions of 5 mA cm −2 . More importantly, Zn-I 2 cells can stably cycle for 10000 cycles at 1 A g −1 and 10 A g −1 . The average capacity increased to 97.54 mAh g −1 after 100 cycles at 1 A g −1 and 74.57 mAh g −1 after 100 cycles at 10 A g −1 . After 100 cycles, the Zn-I 2 full cell's capacity retention rose from 2.41 % to 57.47 % under the conditions of 1 A g −1 and a 5.6 N/P ratio.
研究领域:
电化学
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能源材料
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储能技术
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无机化学
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材料科学
✓ 已验证
DOI
高影响因子
Arabian Journal of Chemistry
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2023
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IF 6
Yuhang Zhang,Shaoshuai Gao,Tingyu Zhao,Danshuo Chen,Rongli Wang,Yingjian Yu
The advantages of Ge-air batteries compared with metal-air batteries are their high anode utilization and ideal safety. To further enhance the discharge performance of Ge-air batteries, we report for the first time the successful synthesis of metal–organic segments (MOSs) material on the surface of germanium wafers by solution growth methods and demonstrate their performance in a button-type Ge-air battery with an alkaline gel polymer electrolyte . The morphology of MOSs can be controlled by adjusting the solution concentration and reaction time, and the discharge time of the battery would be elevated to about 350 h with prolonged reaction time. Our experimental findings prove that applying this MOSs material at the anode can significantly improve the discharge duration of Ge-air batteries. This paper also provides a strategy for anode modification to ameliorate the performance of Ge-air batteries.
研究领域:
材料科学
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电化学
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能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2020
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IF 1.566
Bo Tang,Li Ji,Yuanzhe Dai,Haiqun Chen,Zhenyu Zhang,Zhengwei Wang,Sen Li
MOF-based composite material is adopted to modify photoanode, and the obtained large BET area is found meaningful to the dye loading amount, which brings about a high short circuit current and incident photon to current conversion efficiency. Meanwhile, three-dimensional graphene networks (3DGNs) are employed to provide a fast transport channel for photo-induced electrons. The morphology is analyzed by SEM, TEM, XRD and Raman spectrum, and the photovoltaic performances are recorded to reveal the specific functions of MOF and 3DGNs. The synergy between MOF, 3DGNs and TiO 2 is achieved by adjusting their mass fraction. Moreover, the average size of MOF exerts a significant influence on the resulting properties resulting from the scattering ability to incident light. After corresponding optimizing, the short circuit current, open circuit voltaic, fill factor and energy conversion efficiency reach 20.5 mAcm − 2 , 680 mV, 0.619% and 8.63%.
研究领域:
材料科学
·
能源技术
✓ 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）