Investigations on physicochemical properties and electrochemical performance of sulfate-chloride mixed acid electrolyte for vanadium redox flow battery

Yang, Yadong; Zhang, Yimin; Tang, Li; Liu, Tao; Huang, Jing; Peng, Sui; Yang, Xiaoling

doi:10.1016/j.jpowsour.2019.226719

Cited by 31 publications

(17 citation statements)

References 19 publications

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“…Because of the excessive use of fossil fuels and the implementation of firm environmental safety policies, the use of renewable energy sources, including solar and wind, has rapidly increased. 1 However, renewable energy sources are intermittent. Thus, energy-storage systems that can enable the efficient and timely utilization of these resources are required.…”

Section: ■ Introductionmentioning

confidence: 99%

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Bayeh

Lin

Chang

et al. 2020

ACS Sustainable Chem. Eng.

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A novel, low-cost, and powerful cerium-oxide nanowire (CeO2NW) electrode decorated with graphite felt (GF) through a one-step hydrothermal method was proposed in this study. Subsequently, hydrogen annealing was conducted to create defective-hydrogen-annealed CeO2NWs decorated with GF (H–CeO2NWs–GF) for use in vanadium redox flow batteries (VRFBs). The electrochemical results show that the H–CeO2NWs–GF reveals excellent electrocatalytic effects toward the VO2 +/VO2+ redox process in VRFBs at the positive electrode to facilitate the electrochemical kinetics of the VRFBs. The VRFBs using different electrode materials were compared with a VRFB using H–CeO2NWs–GF. The results revealed that the VRFB using H–CeO2NWs–GF exhibits the highest voltage efficiency of 90.4% at a current density of 40 mA cm–2, which is significantly higher than those using pristine GF (81.1%) and a CeO2NW electrode decorated with GF (88.4%). The significant improvement in the electrochemical performance of H–CeO2NWs–GF might be mostly ascribed to the defect-rich H–CeO2NWs on the GF surface, which acts as active sites and reduces the electrochemical polarization of the redox reaction. Moreover, the one-dimensional nature of H–CeO2NWs is favorable for the charge-transfer process and improves the accessibility, thus improving the electrode performance.

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Section: ■ Introductionmentioning

confidence: 99%

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Bayeh

Lin

Chang

et al. 2020

ACS Sustainable Chem. Eng.

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“…Penelitian sebelumnya telah banyak dilakukan dan difokuskan pada karakteristik baterai yang meliputi tegangan kerja yang dihasilkan (Lim et al, 2019), membran yang digunakan(Q. H. Liu et al, 2012;X. Wu et al, 2014), optimalisasi elektroda (Mehboob et al, 2018;Wei et al, 2016), dan adiktif pada elektrolit (Cao et al, 2018;Yadong Yang et al, 2019). Namun sangat sedikit ditemukan hasil penelitian yang menjelaskan secara baik tentang distribusi potensial kimia dan distribusi konsentrasi permukaan spesies ion vanadium pada kedua elektroda.…”

Section: Pendahuluanunclassified

Simulasi Pengaruh Ketebalan Elektroda Terhadap Potensial Elektrolit dan Molaritas Spesies Vanadium Redox Flow Battery (VRFB)

Kumara

Hidayah

Hadila

et al. 2022

JFF

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Vanadium Redox Flow Battery (VRFB) adalah jenis baterai sekunder yang relatif baru yang memiliki kemampuan sebagai Energy Storage System (ESS) untuk pembangkit listrik energi terbarukan seperti solar cell. Sel tunggal VRFB 2D dimodelkan menggunakan software COMSOL Multiphysics dan disimulasikan secara numerik menggunakan Nernst-Planck, distribusi arus sekunder, distribusi arus tersier dan prinsip Buttler-Volmer. Simulasi dilakukan pada 293,15 K, dengan variasi ketebalan elektroda 1 mm (L1), 2 mm (L2), 3 mm (L3), 4 mm (L4) dan 5 mm (L5). Berdasarkan hasil simulasi diketahui bahwa potensial elektrolit pada elektroda negatif lebih tinggi dari pada elektroda positif dan distribusinya cenderung menurun untuk semua variasi. Konsentrasi permukaan dekat kolektor dominan selama pengisian dibandingkan posisi inlet dan fenomena sebaliknya terjadi selama proses pengosongan. VRFB L1 menunjukkan kinerja yang lemah dan VRFB L2 menunjukkan kinerja terbaik dalam hal potensial elektrolit dan molaritas spesies di permukaan elektroda.KATA KUNCI: Baterai aliran vanadium redoks; Distribusi arus tersier; Ketebalan elektroda; Potensi elektrolit.ABSTRACT−Vanadium Redox Flow Battery (VRFB) is a relative new type of secondary battery that has ability as Energy Storage System (ESS) for renewable energy power plants such as solar cell. 2D VRFB single cell was modeled using COMSOL Multiphysics software and simulated numerically by using Nernst-Planck, secondary current distribution, tertiary current distribution and Buttler-Volmer principle. Simulation was conducted at 293,15 K, with electrode thickness variations of 1 mm (L1), 2 mm (L2), 3 mm (L3), 4 mm (L4) and 5 mm (L5). According to the simulation results, it is known that electrolyte potential in negative electrode is higher than positive electrode and the distribution is tend to decrease for all variations. Surface concentration near collector is dominant during charging compare inlet position and the reverse phenomenon occur during discharging process. VRFB L1 show weak performance and VRFB L2 show the best performance in term of electrolyte potential and species molarity in the electrode surface.

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“…In 2016, Reed et al [108] also reported a kW class stack operating at 320 mA cm −2 with 75% energy efficiency due to improved electrode microstructure and flow field design, and also confirmed operations above 50 • C without detrimental effects. In 2019, the viscosity, conductivity, and electrochemical properties were investigated and optimized by Yang et al [109], and it was concluded by their group that the optimal battery efficiency and capacity would be reached at 2.2 M vanadium concentration, 2.75 M sulfate concentration, and 5.8 M chloride ion concentration. However, the main drawback of this strategy is the presence of chloride ions, which can lead to chlorine evolution at the positive electrode, which implies not only safety hazards but also consequences such as thermal precipitation of V 5+ and pump blocking [4,38,108,110].…”

Section: Mixed Acid Vanadium Redox Flow Battery (G3 Rfb)mentioning

confidence: 99%

“…Despite several efforts to improve and optimize the mixed-acid RFB [111][112][113][114], and studies showed that the mixed-acid electrolyte can operate until 1.7 V without gas evolution [115], it still remains one of the biggest threats to the commercialization of this technology [3]. There are also studies about using immobilizing agents, such as phosphoric acid (H 3 PO 4 ) and ammonium phosphate ((NH 4 ) 3 PO 4 ), but improving the vanadium solubility in RFBs involves complex and controversial chemical processes, and it still is an open topic of discussion [4,38,79,105,109,110].…”

Section: Mixed Acid Vanadium Redox Flow Battery (G3 Rfb)mentioning

confidence: 99%

Redox Flow Batteries: Materials, Design and Prospects

et al. 2021

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The implementation of renewable energy sources is rapidly growing in the electrical sector. This is a major step for civilization since it will reduce the carbon footprint and ensure a sustainable future. Nevertheless, these sources of energy are far from perfect and require complementary technologies to ensure dispatchable energy and this requires storage. In the last few decades, redox flow batteries (RFB) have been revealed to be an interesting alternative for this application, mainly due to their versatility and scalability. This technology has been the focus of intense research and great advances in the last decade. This review aims to summarize the most relevant advances achieved in the last few years, i.e., from 2015 until the middle of 2021. A synopsis of the different types of RFB technology will be conducted. Particular attention will be given to vanadium redox flow batteries (VRFB), the most mature RFB technology, but also to the emerging most promising chemistries. An in-depth review will be performed regarding the main innovations, materials, and designs. The main drawbacks and future perspectives for this technology will also be addressed.

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Investigations on physicochemical properties and electrochemical performance of sulfate-chloride mixed acid electrolyte for vanadium redox flow battery

Cited by 31 publications

References 19 publications

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Simulasi Pengaruh Ketebalan Elektroda Terhadap Potensial Elektrolit dan Molaritas Spesies Vanadium Redox Flow Battery (VRFB)

Redox Flow Batteries: Materials, Design and Prospects

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Investigations on physicochemical properties and electrochemical performance of sulfate-chloride mixed acid electrolyte for vanadium redox flow battery

Cited by 31 publications

References 19 publications

Oxygen-Vacancy-Rich Cubic CeO2 Nanowires as Catalysts for Vanadium Redox Flow Batteries

Oxygen-Vacancy-Rich Cubic CeO2 Nanowires as Catalysts for Vanadium Redox Flow Batteries

Simulasi Pengaruh Ketebalan Elektroda Terhadap Potensial Elektrolit dan Molaritas Spesies Vanadium Redox Flow Battery (VRFB)

Redox Flow Batteries: Materials, Design and Prospects

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Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries

Oxygen-Vacancy-Rich Cubic CeO₂ Nanowires as Catalysts for Vanadium Redox Flow Batteries