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Wang W, Li S, Jiang L, Cui X, Gao Y, Ning H, Li Q, Jiang X, Zhang M, Deng D, Shu Y, Wang J, Guan Y, Geng X. Anti-sulfur poisoning and highly sensitive portable detection instrument for monitoring of hydrogen sulfide on-site. JOURNAL OF HAZARDOUS MATERIALS 2025; 492:138278. [PMID: 40245717 DOI: 10.1016/j.jhazmat.2025.138278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2025] [Revised: 03/28/2025] [Accepted: 04/11/2025] [Indexed: 04/19/2025]
Abstract
The susceptibility of sensors to sulfur poisoning is the biggest challenge when monitoring high concentrations of hydrogen sulfide (H2S). In order to solve this problem, a portable detection instrument based on electrochemical sensor was developed. The "chainmail" catalyst of graphene-encapsulated cobalt-nickel nanoparticles (CoNi@NGs) was synthesized and doped with conductive carbon black (CCB) as sensing material. The graphene shell could protect core metal from sulfur poisoning. The anti-sulfur poisoning performance of the developed instrument reached the best level in literature. After 60 days of intermittent detection of 100 ppm H2S or on-site monitoring in wastewater treatment tank, the signals only decreased by 1.3 % and 1.6 %, respectively. By doping CCB, a porous structure was constructed on the working electrode membrane (WEM), which reduced the response and recovery time by 87.9 % and 77.0 %, to 14 s and 24.5 s, respectively. In addition, the instrument had a wide detection range (20 ppb-700 ppm), high sensitivity (0.580 μA/ppm) and limit of detection (LOD) of 0.52 ppb (3σ). Finally, the instrument was applied to monitor of H2S in wastewater treatment tank and sewage sewer of an institute, which showed that the instrument had broad application prospects for on-site monitoring of H2S in real environments.
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Affiliation(s)
- Wenjing Wang
- Department of Chemistry, College of Sciences, Northeastern University, 11 Wenhua Road, Shenyang 110819, China; Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Shenghong Li
- Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
| | - Liumo Jiang
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100039, China
| | - Xiaoju Cui
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China
| | - Yan Gao
- Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Haijing Ning
- Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Qinglian Li
- Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xiaolin Jiang
- Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Mo Zhang
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China
| | - Dehui Deng
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Science, 457 Zhongshan Road, Dalian 116023, China
| | - Yang Shu
- Department of Chemistry, College of Sciences, Northeastern University, 11 Wenhua Road, Shenyang 110819, China.
| | - Jianhua Wang
- Department of Chemistry, College of Sciences, Northeastern University, 11 Wenhua Road, Shenyang 110819, China
| | - Yafeng Guan
- Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China; Institute of Deep-Sea Science & Engineering, Chinese Academy of Sciences, 28 Luhuitou Road, Sanya 572000, China
| | - Xuhui Geng
- Department of Instrumentation & Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China.
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Wang Y, Mu A, Wang W, Yang B, Wang J. A Review of Capacity Decay Studies of All-vanadium Redox Flow Batteries: Mechanism and State Estimation. CHEMSUSCHEM 2024; 17:e202301787. [PMID: 38440928 DOI: 10.1002/cssc.202301787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/06/2024]
Abstract
As a promising large-scale energy storage technology, all-vanadium redox flow battery has garnered considerable attention. However, the issue of capacity decay significantly hinders its further development, and thus the problem remains to be systematically sorted out and further explored. This review provides comprehensive insights into the multiple factors contributing to capacity decay, encompassing vanadium cross-over, self-discharge reactions, water molecules migration, gas evolution reactions, and vanadium precipitation. Subsequently, it analyzes the impact of various battery parameters on capacity. Based on this foundation, the article expounds upon the significance of battery internal state estimation technology. Additionally, the review also summarizes domestic and international mathematical models utilized for simulating capacity decay, serving as a valuable reference for future research endeavors. Finally, through the comparison of traditional experimental methods and mathematical modeling methods, this article offers effective guidance for the future development direction of battery state monitoring. This review generally overview the problems related to the capacity attenuation of all-vanadium flow batteries, which is of great significance for understanding the mechanism behind capacity decay and state monitoring technology of all-vanadium redox flow battery.
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Affiliation(s)
- Yupeng Wang
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, No. 5, Jinhua South Road, Xi'an, P. R. China
| | - Anle Mu
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, No. 5, Jinhua South Road, Xi'an, P. R. China
| | - Wuyang Wang
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, No. 5, Jinhua South Road, Xi'an, P. R. China
| | - Bin Yang
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, No. 5, Jinhua South Road, Xi'an, P. R. China
| | - Jiahui Wang
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, No. 5, Jinhua South Road, Xi'an, P. R. China
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Chu F, Su M, Xiao G, Tan Z, Yang G. Analysis of Electrode Configuration Effects on Mass Transfer and Organic Redox Flow Battery Performance. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04689] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Fengming Chu
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Minghui Su
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guozhen Xiao
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhanao Tan
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guoan Yang
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Abstract
The world is moving to the next phase of the energy transition with high penetrations of renewable energy. Flexible and scalable redox flow battery (RFB) technology is expected to play an important role in ensuring electricity network security and reliability. Innovations continue to enhance their value by reducing parasitic losses and maximizing available energy over broader operating conditions. Simulations of vanadium redox flow battery (VRB/VRFB) cells were conducted using a validated COMSOL Multiphysics model. Cell designs are developed to reduce losses from pump energy while improving the delivery of active species where required. The combination of wedge-shaped cells with static mixers is found to improve performance by reducing differential pressure and concentration overpotential. Higher electrode compression at the outlet optimises material properties through the cell, while the mixer mitigates concentration gradients across the cell. Simulations show a 12% lower pressure drop across the cell and a 2% lower charge voltage for improved energy efficiency. Wedge-shaped cells are shown to offer extended capacity during cycling. The prototype mixers are fabricated using additive manufacturing for further studies. Toroidal battery designs incorporating these innovations at the kW scale are developed through inter-disciplinary collaboration and rendered using computer aided design (CAD).
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