JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Wenlong Gao,Xinyu Wang,Shumin Liu,Maolin Fang,Xiangkun Ma
Alkaline zinc iron flow battery (AZIFB) is considered as an economical candidate for energy storage technologies. Ion conduction membranes as the key material of AZIFB directly affect the performance of efficiency and output power. However, the “Trade off” effect between ion selectivity and conductivity is a significant challenge in membrane development. Herein, we propose a method of simultaneously improving ion conductivity and ion selectivity by in-situ incorporating negative TiO 2 nanoparticles into the Nafion 212 membrane. The Nafion 212/TiO 2 composite membranes exhibit lower Zeta potential of −33.1 mV than the Nafion 212 membrane (−17.1 mV). This significant electronegativity of the composite membrane plays a key role in AZIFBs by inhibiting the crossover of the electronegative active species such as [Zn(OH) 4 ] 2 ⁻, [Fe(CN) 6 ] 4 ⁻, and [Fe(CN) 6 ] 3 ⁻. Additionally, since the charge carriers such as K + and Na + display electropositive properties, the electrostatic effect generated by the Nafion 212/TiO 2 composite membrane attracts these charge carriers, further influencing ion transport dynamics within the battery system. Therefore, the composite membrane synergistically enhances both ion selectivity and ion conductivity, resulting in impressive performance metrics for AZIFBs. Consequently, AZIFBs based on the composite membranes achieve a superior energy efficiency (EE) of 84.5 % and voltage efficiency (VE) of 84.9 % at a current density of 80 mA/cm 2 , which is much higher than that of the typical Nafion 212 membrane (EE: 68.2 %; VE: 68.9 %). This work offers significant insights for the enhancing the high-performance membranes for the practicality of AZIFBs.
研究领域:
材料科学
·
电化学能源
✓ 已验证
DOI
高影响因子
RARE METALS
·
2023
·Vol. 42
·期 4
·1214-1226
·
IF 8.8
Jiang Qing-Chun,Li Jin,Yang Yu-Jie,Ren Yu-Jie,Dai Lei,Gao Jia-Yi,Wang Ling,Ye Jia-Ye,He Zhang-Xing
Metal–organic framework (MOF) and its derivatives have low-cost, controllable structure, and good catalytic performance, which are often used in the electrochemical field. In this work, SnO 2 in situ modified graphite felt (SnO 2 /GF) is prepared by hydrothermal method then simple thermal treatment using Sn-based MOF (Sn-MOF) as precursor. SnO 2 is uniformly and firmly distributed on the GF surface rather than the common agglomeration and poor bonding of metal oxides on carbon-based electrodes, providing stable active centers for the VO 2+ /VO 2 + and V 2+ /V 3+ redox reactions. At 250 mA·cm −2 , the energy efficiency of the battery with SnO 2 /GF remains at 63.2%, while the blank one has failed. The former battery, at 100 mA·cm −2 , has higher energy efficiency and good cycle stability (over 200 cycles). The battery performance of this study is better than that of most previous report in metal oxide-related work. This work obtains high-performance composite electrode by simple treatment of MOF, which provides a reference for the application of MOF in vanadium redox flow battery.
Graphical abstract
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
Joule
·
2022
·
IF 46.048
Zhizhang Yuan,Lixin Liang,Qing Dai,Tianyu Li,Qilei Song,Huamin Zhang,Guangjin Hou,Xianfeng Li
Future terawatt-scale deployment of flow batteries will require substantial capital cost reduction, particularly low-cost electrolytes and hydrocarbon ion exchange membranes. However, integration of hydrocarbon membranes with novel flow battery chemistries in commercial-scale stacks is yet to be demonstrated. Here, we report the pilot-scale synthesis and roll-to-roll manufacturing of sulfonated poly(ether ether ketone) (SPEEK) membranes and demonstrate their high hydroxide conductivity and chemical stability in kW-scale alkaline-based flow batteries. The membrane was integrated in flow battery stacks with power up to 4,000 W, which demonstrated a high energy efficiency of 85.5% operated at 80 mA cm −2 and long-term stable operation over 800 h as well as substantial cost savings relative to Nafion membranes. This work illustrates a potential pathway for manufacturing and upscaling of next-generation cost-effective flow batteries based on low-cost hydrocarbon membranes developed in the past decades to translate to large-scale applications for grid energy storage.
研究领域:
能源材料
·
电化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Erqiang Yang,Yixin Wang,Tiegen Guo,Ge Chao,Xiaowei Zhou,Yuchen Zhang,Bin Hu,Zixin Lv,Huidong Qian,Kang Geng,Nanwen Li
Polybenzimidazole (PBI) membranes have attracted much attention for flow batteries due to their good chemical stability. However, the high area resistance (AR) of dense PBI limits its further development in VFBs. Herein, we design a sintering method to remove the phthalates with different molecular structures in the ternary system (PBI as polymer, N-methylpyrrolidone as solvent, and phthalates as non-solvent). Asymmetric PBI membranes with adjustable and disconnected pores, as well as ultrathin-dense layers, are prepared. This series of porous membranes shows excellent overall performance in VFBs. Among them, the porous NPBI-DBP-200 membrane (0.139 Ω cm 2 ) with DBP as the non-solvent exhibits a lower AR compared to the dense NPBI (0.489 Ω cm 2 ). At a current density of 200 mA cm −2 , the energy efficiency (EE) of a single cell assembled with the NPBI-DBP-200 membrane (EE = 78.26 %) has improved by 26.37 % compared to the dense NPBI membrane (EE = 61.93 %). In addition, the porous NPBI-DBP-200 membrane has excellent in-situ stability, and the single cell can operate stably for 1800 cycles at the current density of 120 mA cm −2 . This work presents a novel, easy-to-use technique for preparing high-performance porous PBI membranes with adjustable pore morphology.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2024
·Vol. 14
·期 46
·2402227
·
IF 24.4
Hua Jiang,Wendong Yang,Pei Liu,Linfeng Wang,Jintao Meng,Shuangyan Gui,Xue Long,Xuan Cai,Yilin Zeng,Yifan Zhang,Jinhua Guo,Jun Wang,Jun Zhou,Jiangjiang Duan
Alkaline all-iron flow batteries possess intrinsic safety and low cost, demonstrating great potential for large-scale and long-duration energy storage. However, their commercial application is hindered by the issue of capacity decay resulting from the decomposition of iron complexes and ligand crossovers. In this paper, an robust anolyte Fe(TEA-2S) is reported, which is formed by chelating iron ions with the sulfonate-enriched ligand (TEA-2S) in alkaline environment. By skillfully designing the ligands, the binding energy of the iron complexes increases and ligand crossovers are suppressed, making the iron complexes highly stable in the charge–discharge cycles. Alkaline all-iron flow batteries coupling with Fe(TEA-2S) and the typical iron-cyanide catholyte perform a minimal capacity decay rate (0.17% per day and 0.0014% per cycle), maintaining an average coulombic efficiency of close to 99.93% over 2000 cycles along with a high energy efficiency of 83.5% at a current density of 80 mA cm −2 . In addition, Fe(TEA-2S) exhibits high solubility of up to 1.85 м (with a theoretical capacity of up to 49.58 Ah L −1 ), even at low temperatures as extreme as −30 °C. This work demonstrates a promising pathway toward achieving long-duration and large-scale energy storage.
研究领域:
能源存储技术
·
电化学材料
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Shaoliang Wang,Zeyu Xu,Xiaoliang Wu,Huan Zhao,Jinling Zhao,Jianguo Liu,Chuanwei Yan,Xinzhuang Fan
Iron–chromium flow battery (ICFB) is one of the most promising technologies for energy storage systems, while the parasitic hydrogen evolution reaction (HER) during the negative process remains a critical issue for the long-term operation. To solve this issue, In 3+ is firstly used as the additive to improve the stability and performance of ICFB. The results suggest that In 3+ not only effectively inhibits the HER but also accelerates the kinetics of Cr 3+ /Cr 2+ and Fe 3+ /Fe 2+ to some extent. More importantly, the ICFB using an optimal concentration of 0.01 M In 3+ in the anolyte exhibits an energy efficiency of 77.0% at 200 mA cm −2 , and a 36.3% higher capacity retention ratio than that of the pristine anolyte after 140 cycles at 160 mA cm −2 . Furthermore, the capacity decay rate is low to 0.16% per cycle during the cycle test, which is much lower than that in the previous studies. Both the enhanced stability and electrochemical performance are attributed to the coupling effect of the inhibited HER and promoted kinetics of Cr 3+ /Cr 2+ after In 3+ is introduced. Therefore, In 3+ as an anolyte additive can be a promising and cost-effective method to further improve the battery performance of ICFB and promote its engineering application.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Xuelong Zhou,Liyu Lin,Yunhui Lv,Xiangyang Zhang,Liangdong Fan,Qixing Wu
Component materials and flow fields are key design parameters that influence the advection-diffusion-reaction process and thereby the performance of a Sn–Fe hybrid flow battery . In this work, various electrode configurations (empty chamber and porous carbon-based electrodes), membranes (cation and anion conducting) and flow fields (serpentine and interdigitated) are systematically investigated to elucidate their effects on the unique charge/discharge behaviors of the Sn–Fe flow battery with tin metal plating/striping. It is found that the battery capacity roughly increases linearly with the porosity of the porous electrode especially at low current densities , and a highly porous electrode (graphite felt) is more desirable than an empty chamber configuration in terms of capacity and power density. In addition, as compared to cation exchange membrane (Nafion 212), the anion exchange membrane (Fumasep FAP-450) exhibits improved capacities and columbic efficiencies in sulfuric acid-based electrolytes at low current densities due to the reduction of cation crossover. Interestingly, it is showed that although a serpentine flow field and a low flow rate generally lead to poor battery performance, they tend to ameliorate the maldistribution of plated tin at the negative electrode owing to the restricted mass transfer of reactants.
研究领域:
能源科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ENERGY
·
2024
·
IF 10.1
Min Wu,Mingjun Nan,Yujiao Ye,Mingjun Yang,Lin Qiao,Huamin Zhang,Xiangkun Ma
Iron‑chromium flow battery (ICFB) is the one of the most promising flow batteries due to its low cost. However, the serious capacity loss of ICFBs limit its further development. Herein, we analyze the capacity loss mechanism of ICFBs. The capacity loss is due to inactive Cr(H 2 O) 6 3+ ions result in the mismatched content of active ions in catholyte and anolyte. Thus, a simple method is proposed to raise the content of active Cr 3+ species (Cr(H 2 O) 5 Cl 2+ and Cr(H 2 O) 4 Cl 2 + ), achieving the match of Fe 2+ /Fe 3+ and Cr 3+ /Cr 2+ redox couples and reducing the capacity loss of ICFBs. Meanwhile, the increasing content of active Cr 3+ ions was proved by the quantitative analysis of the UV–vis absorption spectra. As a result, the ICFB with the improved electrolyte of 1 M FeCl 2 + 1.3 M CrCl 3 + 3 M HCl (E-1.3Cr) exhibits an energy efficiency (EE) of 84.51%, which is much higher than the original one of 1 M FeCl 2 + 1 M CrCl 3 + 3 M HCl (E-1Cr) (82.32%) at a current density of 80 mA cm −2 . Most importantly, the ICFB with E-1.3Cr (7.44 mAh/cycle) shows the much slower capacity decay rate than that with E-1Cr (9.16 mAh/cycle). This work provides an effective way to accelerate engineering applications of ICFBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Biao Lu,Kaifeng Yu,Weide Shao,Jianing Zhang,Jinpeng Cao,Yong Cheng,Feifei Zhang
Redox flow batteries have gained significant attention in the context of large-scale energy storage systems, owing to their safety features, environmental sustainability, and the ability to decouple power generation from energy storage. However, the limited voltage and energy density of flow batteries pose challenges to their further advancement. In this work, we propose a novel hybrid flow battery that incorporates Ni(OH) 2 and hydrogen storage alloy respectively on the electrodes of Fe-DHPS flow batteries. This hybrid flow battery enhances the overall capacity of the battery while also mitigating the increased polarization often associated with the introduction of solid active substances into the tank. Additionally, it demonstrates a volume specific capacity of 60 Ah L −1 and an energy density of 65 Wh L −1 . Furthermore, these batteries demonstrate the capability to undergo 100 cycles at a current density of 60 mA cm −2 with a capacity decay rate of 0.3745 % per day. With the concentration of DHPS reaching theoretical solubility, the volume specific capacity can extend up to 120 Ah L −1 . This innovative flow battery, loaded with solid active substances on the electrodes, holds significant promise for large-scale energy storage systems.
研究领域:
能源存储技术
·
电化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Yuanhui Cheng,Ningyuan Zhang,Qiuli Wang,Yinjian Guo,Shuo Tao,Zhijian Liao,Peng Jiang,Zhonghua Xiang
Zinc nickel flow battery is one of the most promising energy storage technologies for intermittently renewable solar and wind power. However, unpaired coulombic efficiency of nickel hydroxide cathode and zinc anode causes zinc accumulation in practical operation, which shortens the cycle life and impedes the commercialization of the battery. Here, we induce an additional O 2 /OH − redox couple integrated with NiOOH/Ni(OH) 2 as cathode energy storage materials . Benefit from the new reaction mechanism of the hybrid cathode, deposited zinc upon charge can be fully consumed during discharge, which completely avoids zinc accumulation issue. The new designed battery vigorously operates for more than 1100 h with negligible performance degradation , while the energy efficiency of pristine zinc-nickel flow battery dramatically reduces after 440 h. More importantly, the specific capacity of the cathode synchronously increases by 2.5 times and thereby the energy density . This system dexterously integrates dual redox couples into one hybrid unit at cathode complementing advantages of one another, demonstrating a broader method to solve the problem of unpaired coulombic efficiency in zinc based flow batteries.
研究领域:
能源存储技术
·
电化学工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Na Chen,Huan Zhang,Xu-Dong Luo,Chuan-Yu Sun
In this paper, the SiO 2 -decorated graphite felts are obtained by silicic acid etching graphite felts in hot air, and their performance as the electrodes of iron-chromium redox flow battery (ICRFB) is investigated. The surface morphology, microstructure and surface chemical composition of SiO 2 -decorated graphite felts are characterized in detail through scanning electron microscopy, specific surface area analysis, X-ray photoelectron spectroscopy, X-ray diffraction, and Raman spectroscopy. The electrocatalytic activity of SiO 2 -decorated graphite felts and the performance in ICRFBs are studied by electrochemical impedance spectroscopy , cyclic voltammetry , and single-cell charge-discharge cycling tests. Results indicate that the SiO 2 introduced by the decomposition of silicic acid can increase the effective specific surface area of the graphite felts, and concurrently facilitate the oxidation of the SiO 2 -decorated graphite felts in hot air. The number of oxygen functional groups and the defect sites on the surface of the SiO 2 -decorated graphite felts increase to a great degree that especially have a considerable influence on the negative reaction activity of the ICRFB. An ICRFB assembled with graphite felts etched by 50 wt% silicic acid as the electrodes has a voltage efficiency and energy efficiency of 86.27% and 79.66% at a current density of 120 mA/cm 2 , respectively. The decay rate of capacity is only 0.46% per cycle. The cost-effective and convenient method demonstrated in this paper can coordinate the control of oxygen functional groups, surface area and electrical conductivity of graphite felts, which may provide an example for improving the electrode materials for the commercial application of ICRFBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Huan Zhang,Yi Tan,Jiayan Li,Bing Xue
The performances of rayon (RGF) and polyacrylonitrile (PGF) based graphite felts as electrodes are compared in the iron-chromium redox flow battery (ICRFB). The essential differences in structure between RGF and PGF are also characterized in this study. The results show that the RGF electrode displays excellent electrochemical performance for negative redox couple (Cr 3+ /Cr 2+ ), resulting in the cell with higher charge efficiency and slower capacity decay. However, due to the high degree of graphitization and electrochemical activity for positive redox couple (Fe 2+ /Fe 3+ ) in PGF, the cell using PGF has higher voltage efficiency and energy efficiency, as well as lower area surface resistance than the cell with RGF. The fundamental difference between RGF and PGF is the crystallites structure in radial direction and basal plane of the fiber. PGF with the core-rim structure has better graphitization stacked in radial direction of the fiber. Further, PGF has more defective carbons exposed in the basal planes, while the surface of RGF exhibits a higher concentration of oxygen functional groups. The role of catalysts in the ICRFB has also been studied by introducing bismuth (Bi) into RGF and PGF used as negative electrodes. The electrocatalytic activities of RGF and PGF before and after modification with Bi are investigated by cyclic voltammetry (CV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). Bismuth deposition on the negative electrode is found to improve the negative reaction in ICRFB.
研究领域:
材料科学
·
电化学
✓ 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）