A Vanadium Redox Flow Process for Carbon Capture and Energy Storage DOI Creative Commons
Mohammad Rahimi, Mohsen Afshari, Abdelrahman Refaie

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 16, 2024

Abstract Climate change mitigation by decreasing worldwide CO2 emissions is an urgent and demanding challenge that requires innovative technical solutions. This work, inspired vanadium redox flow batteries (VRFB), introduces integrated electrochemical process for carbon capture energy storage. It utilizes established ferricyanide couples pH modulation desorption absorbent regeneration. The developed consumes electricity during the daytime—when renewable available—to desorb charge cell, it can regenerate further absorption while releasing to grid nighttime when solar power unavailable. research explores fundamentals scalability potential, through extensive study of system's thermodynamics, transport phenomena, kinetics, bench-scale operations. Cyclic voltammetry (CV) was utilized thermodynamics process, mapping profiles identify ideal potential windows operation. CV results pinpointed a 0.3 V Nernstian overpotential as thermodynamic minimum required cell Additionally, polarization studies were conducted select practical operating identifying 0.5 optimal cycle provide sufficient polarity overcome activation barriers in addition potential. Mass transfer analysis balanced conductivity efficiency, with 1:1 ratio identified redox-active species background electrolyte concentration. To enhance kinetics reactions, plasma treatment electrode surfaces implemented, resulting 43% decrease resistance, measured impedance spectroscopy (EIS) analysis. Finally, operation system demonstrated consumption 54 kJ/mol CO2, which competitive other technologies. Besides its competitiveness, offers multiple additional advantages, including elimination precious metal electrodes, oxygen insensitivity flue gas, VRFB technology, unique ability function battery regeneration enabling efficient day-night

Language: Английский

Materials challenges on the path to gigatonne CO2 electrolysis DOI
Blanca Belsa, Lu Xia, Viktoria Golovanova

et al.

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(8), P. 535 - 549

Published: June 24, 2024

Language: Английский

Citations

28
Electrode, Electrolyte, and Membrane Materials for Electrochemical CO2 Capture DOI Creative Commons

Kaige Sun,

Mike Tebyetekerwa, Hongxia Zhang

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(24)

Published: April 23, 2024

Abstract One of the many possible ways to capture carbon dioxide (CO 2 ) is through electrochemical means. This an emerging approach with various merits. It energy efficient, utilizes renewable energy, operates under ambient conditions, provides ease for control reaction rates, and scalable. Additionally, it can be integrated as a plug‐and‐play module at scales, including large industrial sources or small scale, e.g., on vehicles, easily combine CO capture, storage, utilization into value‐added chemicals. Various “proof‐of‐concept” approaches have been demonstrated in recent past. These are made electro‐active materials that separate, concentrate form electrodes, electrolytes, membranes devices. Herein, these their working mechanisms identified reviewed devices where they utilized. Also, current challenges future research directions summarized give rational understanding guidance selecting designing use

Language: Английский

Citations

13
Indigo as a Low‐Cost Redox‐Active Sorbent for Electrochemically Mediated Carbon Capture DOI
Krish N. Jayarapu, Anmol Mathur, Xing Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)

Published: May 13, 2024

Abstract Climate change has driven the need for carbon capture to mitigate anthropogenic greenhouse gas emissions, yet current thermochemical methods are hampered by high energy intensities. Electrochemically mediated (EMCC) utilizing redox‐active dioxide (CO 2 ) carriers is an attractive alternative capture. Here, economical vat dye compound, indigo, presented, which can reversibly and release CO upon electrochemical reduction oxidation, respectively. Electrode electrolyte engineering strategies utilized improve reversibility stability of indigo EMCC. A bench‐scale prototypical fixed‐bed device constructed demonstrate indigo's EMCC performance under various practically relevant conditions, such as simulated flue extremely dilute sources pertinent direct air hybrid sorbent electrode‐gas diffusion layer approach revealed alleviate mass transport limitations, achieving ≈80% capacity utilization a 15% feed stream. Furthermore, reactive‐diffusive model developed illustrate approaches that be universally applied optimize systems. This work advances potential class low‐cost sorbents while underscoring importance molecular, electrolyte, materials, enable high‐performance

Language: Английский

Citations

10
A Vanadium Redox Flow Process for Carbon Capture and Energy Storage DOI
Mohsen Afshari, Abdelrahman Refaie, Prince Aleta

et al.

ACS ES&T Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Climate change mitigation by decreasing worldwide CO2 emissions is an urgent and demanding challenge that requires innovative technical solutions. This work, inspired vanadium redox flow batteries (VRFB), introduces integrated electrochemical process for carbon capture energy storage. It utilizes established ferricyanide couples pH modulation desorption absorbent regeneration. The developed consumes electricity during the daytime─when renewable available─to desorb charge cell, it can regenerate further absorption while releasing to grid nighttime when solar power unavailable. research explores fundamentals scalability potential, through extensive study of system's thermodynamics, transport phenomena, kinetics, bench-scale operations. Cyclic voltammetry (CV) was utilized thermodynamics process, mapping profiles identify ideal potential windows operation. CV results indicated overpotential approximately 0.3 V required driving reactions. Additionally, polarization studies were conducted select practical operating identifying 0.5 as optimal cycle provide sufficient polarity overcome activation barriers in addition Nernstian potential. Mass transfer analysis balanced conductivity efficiency, with a 1:1 ratio identified redox-active species background electrolyte concentration. To enhance kinetics reactions, plasma treatment electrode surfaces implemented, resulting 43% decrease resistance, measured impedance spectroscopy (EIS) analysis. Finally, operation system demonstrated consumption 54 kJ/mol CO2, which competitive other technologies. Besides its competitiveness, offers multiple additional advantages, including elimination precious metal electrodes, oxygen insensitivity flue gas, VRFB technology, unique ability function battery regeneration enabling efficient day-night

Language: Английский

Citations

0
Multiscale process systems Engineering for electrochemically mediated CO2 Capture: A Mini-Review DOI

Yongxin Hu,

Longgang Sun, Teng Zhou

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121340 - 121340

Published: Feb. 1, 2025

Language: Английский

Citations

0
Materials Advancements in Electrochemically Mediated Carbon Capture DOI
Andong Liu, Yayuan Liu

Current Opinion in Electrochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 101680 - 101680

Published: March 1, 2025

Language: Английский

Citations

0
Electro-activated indigos intensify ampere-level CO2 reduction to CO on silver catalysts DOI Creative Commons
Zhengyuan Li, Xing Li, Ruoyu Wang

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 3, 2025

Language: Английский

Citations

0
Hierarchically structured MOF aerogels with tandem pores for high-performance CO2 capture and separation DOI

Yuhao Che,

Chunqi Wang, Youlie Cai

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163538 - 163538

Published: May 1, 2025

Language: Английский

Citations

0
Electrifying amine carbon capture with robust redox-tunable acids DOI Creative Commons
Xing Li, Charles B. Musgrave, Andong Liu

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 9, 2025

Electrochemically mediated carbon capture presents an energy-efficient and cost-effective strategy to combat climate change due its ability utilize renewable energy operate at ambient conditions. However, many current approaches suffer from operational instability limited scalability potential a lack of reliable, low-cost redox-active absorbent materials. Here, we introduce class chemically robust economical redox-tunable Brønsted acids electrify amine capture. The exhibit reversible tunability in pKa spanning over 20 units organic solvents response electrochemical potential, thereby enabling the regeneration classic amines for CO2 separation via proton-coupled electron transfer. Remarkably, RAs maintain their chemical integrity 400 h operation symmetric flow cell under 10% 21% O2 temperature pressure. By harnessing electrification, our approach can effectively mitigate shortcomings inherent thermochemical processes, facilitating more sustainable drop-in replacement incumbent scrubbing.

Language: Английский

Citations

0
A Vanadium Redox Flow Process for Carbon Capture and Energy Storage DOI Creative Commons
Mohsen Afshari, Abdelrahman Refaie, Prince Aleta

et al.

Published: May 23, 2024

Climate change mitigation by decreasing worldwide CO2 emissions is an urgent and demanding challenge that requires innovative technical solutions. This work, inspired vanadium redox flow batteries (VRFB), introduces integrated electrochemical process for carbon capture energy storage. It utilizes established ferricyanide couples pH modulation desorption absorbent regeneration. The developed consumes electricity during the daytime—when renewable available—to desorb charge cell, it can regenerate further absorption while releasing to grid nighttime when solar power unavailable. research explores fundamentals scalability potential, through extensive study of system's thermodynamics, transport phenomena, kinetics, bench-scale operations. Cyclic voltammetry (CV) was utilized thermodynamics process, mapping profiles identify ideal potential windows operation. CV results pinpointed a 0.3 V Nernstian overpotential as thermodynamic minimum required cell Additionally, polarization studies were conducted select practical operating identifying 0.5 optimal cycle provide sufficient polarity overcome activation barriers in addition potential. Mass transfer analysis balanced conductivity efficiency, with 1:1 ratio identified redox-active species background electrolyte concentration. To enhance kinetics reactions, plasma treatment electrode surfaces implemented, resulting 43% decrease resistance, measured impedance spectroscopy (EIS) analysis. Finally, operation system demonstrated consumption 54 kJ/mol CO2, which competitive other technologies. Besides its competitiveness, offers multiple additional advantages, including elimination precious metal electrodes, oxygen insensitivity flue gas, VRFB technology, unique ability function battery regeneration enabling efficient day-night

Language: Английский

Citations

1