A Review of Technical Advances, Barriers, and Solutions in the Power to Hydrogen (P2H) Roadmap

Hu, Guoping; Chen, Chao; Lu, Hiep Thuan; Wu, Yue; Liu, Congmin; Tao, Lefu; Men, Yuhan; He, Guangli; Li, Gang Kevin

doi:10.1016/j.eng.2020.04.016

Cited by 91 publications

(51 citation statements)

References 120 publications

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“…At present, AE technology is more suitable for large scale implementation because of the cost and maturity (Brauns and Turek 2020;Hu et al 2020). However, the main drawbacks are low current densities, corrosion and limitation when working in dynamic condition (e.g.…”

Section: Electrolysismentioning

confidence: 99%

Ex-situ biological CO2 methanation using trickle bed reactor: review and recent advances

Sposób

Wahid

Fischer

2021

Rev Environ Sci Biotechnol

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Power-to-methane technology is a promising solution to facilitate the use of excess variable renewable energy for biomethane production. In this approach, hydrogen produced via electrolysis is used to upgrade raw biogas, which can be subsequently used as fuel or stored in the gas grid. Ex-situ biomethanation is an emerging technology that could potentially replace conventional energy-intensive biogas upgrading methods and allow CO2 utilization for biomethane production. This work provides a comprehensive overview on the current status of ex-situ biomethanation with particular attention to trickle bed reactor. The review includes description of ex-situ biomethanation and summarizes previous works on this topic. The key elements related to operational conditions, efficiency, and microbiology of ex-situ biomethanation using trickle bed reactor are described here. Additionally, the review highlights the technical and economic issues that have to be addressed for future development and large-scale implementation of ex-situ biomethanation.

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Section: Electrolysismentioning

confidence: 99%

Ex-situ biological CO2 methanation using trickle bed reactor: review and recent advances

Sposób

Wahid

Fischer

2021

Rev Environ Sci Biotechnol

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“…Fig. 1 shows a distinctive geographic match between the availability of solar power and the shortage of freshwater in the majority of the continents, such as North Africa, West and Central Asia, Midwest of Oceania, and southwest of North America 9 . Few studies have been trying to mitigate the water shortage for electrolysis.…”

Section: Mainmentioning

confidence: 99%

“…

Hydrogen gas (H2) produced by water splitting using renewable energy, namely green hydrogen, is the most promising energy carrier of the low-carbon economy [1][2][3][4][5][6] . However, the geographic mismatch between renewables distribution and freshwater availability poses a significant challenge to green hydrogen production [7][8][9] . Here, we demonstrate a method of directly producing H2 from the air, namely, capturing freshwater from the atmosphere using hygroscopic electrolyte and converting it to H2 by electrolysis powered by solar energy.

…”

mentioning

confidence: 99%

Hydrogen Production from the Air

Guo

Zhang

et al. 2021

Preprint

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Hydrogen gas (H2) produced by water splitting using renewable energy, namely green hydrogen, is the most promising energy carrier of the low-carbon economy1–6. However, the geographic mismatch between renewables distribution and freshwater availability poses a significant challenge to green hydrogen production7–9. Here, we demonstrate a method of directly producing H2 from the air, namely, capturing freshwater from the atmosphere using hygroscopic electrolyte and converting it to H2 by electrolysis powered by solar energy. A prototype H2 generator has been successfully established and operated for 12 consecutive days with a stable performance at an average Faradaic efficiency around 95%. This so-called direct air electrolysis (DAE) module can work under low relative humidity (20%) environment, overcoming water supply issues and producing green hydrogen sustainably with minimal impact to the environment. The DAE modules can be easily scaled to provide H2 to remote, arid/semi-arid, and scattered areas.

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“…Therefore, an integrated membrane-adsorption process (Fig. 7) is a promising approach to combine the best of both technologies [23,159,183]. Recently, Liemberger et al reported an integrated process of an aromatic polyimide hollow fibre membrane module with a PSA that could recover at least 60% H 2 at purity 98.0%-99.3% (v/v) from 1/99-10/90 (v/v) H 2 /CH 4 feed gas at 21-51 bar and a) The summary excludes some advanced membrane materials that require more database to make the conclusion; b) H 2 /N 2 selectivity with assumption that selectivity of H 2 /N 2 and H 2 /CH 4 being identical [57]; c) the selectivity of H 2 in ceramic mixed protonic-electronic conducting membrane is proposed to similar to dense metallic membrane.…”

Section: Technology Integrationmentioning

confidence: 99%

The opportunity of membrane technology for hydrogen purification in the power to hydrogen (P2H) roadmap: a review

Miandoab

et al. 2020

Front. Chem. Sci. Eng.

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The global energy market is in a transition towards low carbon fuel systems to ensure the sustainable development of our society and economy. This can be achieved by converting the surplus renewable energy into hydrogen gas. The injection of hydrogen (⩽10% v/v) in the existing natural gas pipelines is demonstrated to have negligible effects on the pipelines and is a promising solution for hydrogen transportation and storage if the end-user purification technologies for hydrogen recovery from hydrogen enriched natural gas (HENG) are in place. In this review, promising membrane technologies for hydrogen separation is revisited and presented. Dense metallic membranes are highlighted with the ability of producing 99.9999999% (v/v) purity hydrogen product. However, high operating temperature (⩾300 °C) incurs high energy penalty, thus, limits its application to hydrogen purification in the power to hydrogen roadmap. Polymeric membranes are a promising candidate for hydrogen separation with its commercial readiness. However, further investigation in the enhancement of H 2 /CH 4 selectivity is crucial to improve the separation performance. The potential impacts of impurities in HENG on membrane performance are also discussed. The research and development outlook are presented, highlighting the essence of upscaling the membrane separation processes and the integration of membrane technology with pressure swing adsorption technology.

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A Review of Technical Advances, Barriers, and Solutions in the Power to Hydrogen (P2H) Roadmap

Cited by 91 publications

References 120 publications

Ex-situ biological CO2 methanation using trickle bed reactor: review and recent advances

Ex-situ biological CO2 methanation using trickle bed reactor: review and recent advances

Hydrogen Production from the Air

The opportunity of membrane technology for hydrogen purification in the power to hydrogen (P2H) roadmap: a review

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