1
|
Yu J, Zhu Q, Ma W, Dai Y, Zhang S, Wang F, Zhu H. Hydrophilic Chitosan-Doped Composite Diaphragm Reducing Gas Permeation for Alkaline Water Electrolysis Producing Hydrogen. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1394-1403. [PMID: 38157839 DOI: 10.1021/acsami.3c13426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The present paper studied the chitosan-doped composite diaphragm by the phase exchange method with the objective of developing a composite diaphragm that complies with the alkaline water electrolysis requirements, as well as tested the electrolytic performance of the diaphragm in alkaline water electrolysis. The structure and morphology are characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The performance of chitosan-doped composite diaphragms was tested; CS3Z12 composite diaphragm with a low area resistance (0.20 Ω cm2), a high bubble point pressure (2.75 bar), and excellent electrochemical performance (current density of 650 mA cm-2 at 1.83 V) shows the best performance. Moreover, the performance of the synthesized composite diaphragm is significantly elevated compared to commercial diaphragms (Zirfon PERL), which is promising for practical application in alkaline electrolytic cells.
Collapse
Affiliation(s)
- Jinghua Yu
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Qingqing Zhu
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Wenli Ma
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yajie Dai
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Shuhuan Zhang
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Fanghui Wang
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Hong Zhu
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| |
Collapse
|
2
|
Kakati N, Anderson L, Li G, Sua-An DM, Karmakar A, Ocon JD, Chuang PYA. Indispensable Nafion Ionomer for High-Efficiency and Stable Oxygen Evolution Reaction in Alkaline Media. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55559-55569. [PMID: 38058109 DOI: 10.1021/acsami.3c08377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Addressing the challenge of sluggish kinetics and limited stability in alkaline oxygen evolution reactions, recent exploration of novel electrochemical catalysts offers improved prospects. To expedite the assessment of these catalysts, a half-cell rotating disk electrode is often favored for its simplicity. However, the actual catalyst performance strongly depends on the fabricated catalyst layers, which encounter mass transport overpotentials. We systematically investigate the role and sequence of electrode drop-casting methods onto a glassy carbon electrode regarding the efficiency of the oxygen evolution reaction. The catalyst layer without Nafion experiences nearly 50% activity loss post stability test, while those with Nafion exhibit less than 5% activity loss. Additionally, the sequence of application of the catalyst and Nafion also shows a significant effect on catalyst stability. The catalyst activity increases by roughly 20% after the stability test when the catalyst layer is coated first with an ionomer layer, followed by drop-casting the catalysts. Based on the half-cell results, the Nafion ionomer not only acts as a binder in the catalyst layer but also enhances the interfacial interaction between the catalyst and electrolyte, promoting performance and stability. This study provides new insights into the efficient and accurate evaluation of electrocatalyst performance and stability as well as the role of Nafion ionomer in the catalyst layer.
Collapse
Affiliation(s)
- Nitul Kakati
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95343, United States
| | - Lawrence Anderson
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95343, United States
| | - Guangfu Li
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95343, United States
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology, Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, China
| | - Desiree Mae Sua-An
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95343, United States
- Laboratory of Electrochemical Engineering, Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Ayon Karmakar
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95343, United States
| | - Joey D Ocon
- Laboratory of Electrochemical Engineering, Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Po-Ya Abel Chuang
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95343, United States
| |
Collapse
|
3
|
Ding L, Wang W, Xie Z, Li K, Yu S, Capuano CB, Keane A, Ayers K, Zhang FY. Highly Porous Iridium Thin Electrodes with Low Loading and Improved Reaction Kinetics for Hydrogen Generation in PEM Electrolyzer Cells. ACS APPLIED MATERIALS & INTERFACES 2023; 15:24284-24295. [PMID: 37167124 DOI: 10.1021/acsami.2c23304] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Highly efficient electrodes with simplified fabrication and low cost are highly desired for the commercialization of proton exchange membrane electrolyzer cells (PEMECs). Herein, highly porous Ir-coated thin/tunable liquid/gas diffusion layers with honeycomb-structured catalyst layers were fabricated as anode electrodes for PEMECs via integrating a facile and fast electroplating process with efficient template removal. Combined with a Nafion 117 membrane, a low cell voltage of 1.842 V at 2000 mA/cm2 and a high mass activity of 4.16 A/mgIr at 1.7 V were achieved with a low Ir loading of 0.27 mg/cm2, outperforming most of the recently reported anode catalysts. Moreover, the thin electrode shows outstanding stability at a high current density of 1800 mA/cm2 in the practical PEMEC. Moreover, with in-situ high-speed visualizations in PEMECs, the catalyst layer structure's impact on real-time electrochemical reactions and mass transport phenomena was investigated for the first time. Increased active sites and improved multiphase transport properties with favorable bubble detachment and water diffusion for the honeycomb-structured electrode are revealed. Overall, the significantly simplified ionomer-free honeycomb thin electrode with low catalyst loading and remarkable performance could efficiently accelerate the industrial application of PEMECs.
Collapse
Affiliation(s)
- Lei Ding
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Weitian Wang
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Zhiqiang Xie
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Kui Li
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Shule Yu
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | | | - Alex Keane
- Nel Hydrogen, Wallingford, Connecticut 06492, United States
| | - Kathy Ayers
- Nel Hydrogen, Wallingford, Connecticut 06492, United States
| | - Feng-Yuan Zhang
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| |
Collapse
|
4
|
Li K, Ding L, Xie Z, Yang G, Yu S, Wang W, Cullen DA, Meyer HM, Hu G, Ganesh P, Watkins TR, Zhang FY. Robust Copper-Based Nanosponge Architecture Decorated by Ruthenium with Enhanced Electrocatalytic Performance for Ambient Nitrogen Reduction to Ammonia. ACS APPLIED MATERIALS & INTERFACES 2023; 15:11703-11712. [PMID: 36812428 DOI: 10.1021/acsami.2c20809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Electrochemical conversion of nitrogen to green ammonia is an attractive alternative to the Haber-Bosch process. However, it is currently bottlenecked by the lack of highly efficient electrocatalysts to drive the sluggish nitrogen reduction reaction (N2RR). Herein, we strategically design a cost-effective bimetallic Ru-Cu mixture catalyst in a nanosponge (NS) architecture via a rapid and facile method. The porous NS mixture catalysts exhibit a large electrochemical active surface area and enhanced specific activity arising from the charge redistribution for improved activation and adsorption of the activated nitrogen species. Benefiting from the synergistic effect of the Cu constituent on morphology decoration and thermodynamic suppression of the competing hydrogen evolution reaction, the optimized Ru0.15Cu0.85 NS catalyst presents an impressive N2RR performance with an ammonia yield rate of 26.25 μg h-1 mgcat.-1 (corresponding to 10.5 μg h-1 cm-2) and Faradic efficiency of 4.39% as well as superior stability in alkaline medium, which was superior to that of monometallic Ru and Cu nanostructures. Additionally, this work develops a new bimetallic combination of Ru and Cu, which promotes the strategy to design efficient electrocatalysts for electrochemical ammonia production under ambient conditions.
Collapse
Affiliation(s)
- Kui Li
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Lei Ding
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Zhiqiang Xie
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Gaoqiang Yang
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Shule Yu
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Weitian Wang
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - David A Cullen
- Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Harry M Meyer
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Guoxiang Hu
- Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Panchapakesan Ganesh
- Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Thomas R Watkins
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Feng-Yuan Zhang
- Nanodynamics and High-Efficiency Lab for Propulsion and Power, Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| |
Collapse
|
5
|
Wang H, Yan J, Song W, Jiang C, Wang Y, Xu T. Ion exchange membrane related processes towards carbon capture, utilization and storage: Current trends and perspectives. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
6
|
Wan L, Liu J, Xu Z, Xu Q, Pang M, Wang P, Wang B. Construction of Integrated Electrodes with Transport Highways for Pure-Water-Fed Anion Exchange Membrane Water Electrolysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200380. [PMID: 35491509 DOI: 10.1002/smll.202200380] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/28/2022] [Indexed: 06/14/2023]
Abstract
The design of high-performance and durable electrodes for the oxygen evolution reaction (OER) is crucial for pure-water-fed anion exchange membrane water electrolysis (AEMWE). In this study, an integrated electrode with vertically aligned ionomer-incorporated nickel-iron layered double hydroxide nanosheet arrays, used on one side of the liquid/gas diffusion layer, is fabricated for the OER. Transport highways in the fabricated integrated electrode, significantly improve the transport of liquid/gas, hydroxide ions, and electron in the anode, resulting in a high current density of 1900 mA cm-2 at 1.90 V in pure-water-fed AEMWE. Specifically, three-electrode and single-cell measurement results indicate that an anion-exchange ionomer can increase the local OH- concentration on the integrated electrodes surface and facilitate the OER for pure-water-fed AEMWE. This study highlights a new approach to fabricating and understanding electrode architecture with enhanced performance and durability for pure-water-fed AEMWE.
Collapse
Affiliation(s)
- Lei Wan
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No.30 Shuang-Qing Road, Hai-Dian District, Beijing, 100084, P.R. China
| | - Jing Liu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No.30 Shuang-Qing Road, Hai-Dian District, Beijing, 100084, P.R. China
| | - Ziang Xu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No.30 Shuang-Qing Road, Hai-Dian District, Beijing, 100084, P.R. China
| | - Qin Xu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No.30 Shuang-Qing Road, Hai-Dian District, Beijing, 100084, P.R. China
| | - Maobin Pang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No.30 Shuang-Qing Road, Hai-Dian District, Beijing, 100084, P.R. China
| | - Peican Wang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No.30 Shuang-Qing Road, Hai-Dian District, Beijing, 100084, P.R. China
| | - Baoguo Wang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, No.30 Shuang-Qing Road, Hai-Dian District, Beijing, 100084, P.R. China
| |
Collapse
|
7
|
Wang W, Li K, Ding L, Yu S, Xie Z, Cullen DA, Yu H, Bender G, Kang Z, Wrubel JA, Ma Z, Capuano CB, Keane A, Ayers K, Zhang FY. Exploring the Impacts of Conditioning on Proton Exchange Membrane Electrolyzers by In Situ Visualization and Electrochemistry Characterization. ACS APPLIED MATERIALS & INTERFACES 2022; 14:9002-9012. [PMID: 35142208 DOI: 10.1021/acsami.1c21849] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
For a proton exchange membrane electrolyzer cell (PEMEC), conditioning is an essential process to enhance its performance, reproducibility, and economic efficiency. To get more insights into conditioning, a PEMEC with Ir-coated gas diffusion electrode (IrGDE) was investigated by electrochemistry and in situ visualization characterization techniques. The changes of polarization curves, electrochemical impedance spectra (EIS), and bubble dynamics before and after conditioning are analyzed. The polarization curves show that the cell efficiency increased by 9.15% at 0.4 A/cm2, and the EIS and Tafel slope results indicate that both the ohmic and activation overpotential losses decrease after conditioning. The visualization of bubble formation unveils that the number of bubble sites increased greatly from 14 to 29 per pore after conditioning, at the same voltage of 1.6 V. Under the same current density of 0.2 A/cm2; the average bubble detachment size decreased obviously from 35 to 25 μm. The electrochemistry and visualization characterization results jointly unveiled the increase of reaction sites and the surface oxidation on the IrGDE during conditioning, which provides more insights into the conditioning and benefits for the future GDE design and optimization.
Collapse
Affiliation(s)
- Weitian Wang
- Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Kui Li
- Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Lei Ding
- Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Shule Yu
- Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - Zhiqiang Xie
- Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| | - David A Cullen
- Center for Nanophase Materials Sciences, Oak Ridge National Lab, Oak Ridge, Tennessee 37831, United States
| | - Haoran Yu
- Center for Nanophase Materials Sciences, Oak Ridge National Lab, Oak Ridge, Tennessee 37831, United States
| | - Guido Bender
- Chemistry & Nanoscience Department, National Renewable Energy Lab, Golden, Colorado 80401, United States
| | - Zhenye Kang
- Chemistry & Nanoscience Department, National Renewable Energy Lab, Golden, Colorado 80401, United States
| | - Jacob A Wrubel
- Chemistry & Nanoscience Department, National Renewable Energy Lab, Golden, Colorado 80401, United States
| | - Zhiwen Ma
- Chemistry & Nanoscience Department, National Renewable Energy Lab, Golden, Colorado 80401, United States
| | | | - Alex Keane
- Nel Hydrogen, 10 Technology Drive, Wallingford, Connecticut 06492, United States
| | - Kathy Ayers
- Nel Hydrogen, 10 Technology Drive, Wallingford, Connecticut 06492, United States
| | - Feng-Yuan Zhang
- Department of Mechanical, Aerospace & Biomedical Engineering, UT Space Institute, University of Tennessee, Knoxville, Tullahoma, Tennessee 37388, United States
| |
Collapse
|
8
|
Yang Y, Li P, Zheng X, Sun W, Dou SX, Ma T, Pan H. Anion-exchange membrane water electrolyzers and fuel cells. Chem Soc Rev 2022; 51:9620-9693. [DOI: 10.1039/d2cs00038e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The key components, working management, and operating techniques of anion-exchange membrane water electrolyzers and fuel cells are reviewed for the first time.
Collapse
Affiliation(s)
- Yaxiong Yang
- Institute of Science and Technology for New Energy, Xi’an Technological University, Xi’an, 710021, P. R. China
| | - Peng Li
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
- Institute for Superconducting & Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Xiaobo Zheng
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wenping Sun
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, P. R. China
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Shi Xue Dou
- Institute of Energy Material Science, University of Shanghai for Science and Technology, Shanghai 200093, China
- Institute for Superconducting & Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi’an Technological University, Xi’an, 710021, P. R. China
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, P. R. China
| |
Collapse
|