Green hydrogen and sustainable development – A social LCA perspective highlighting social hotspots and geopolitical implications of the future hydrogen economy

Akhtar, Malik Sajawal; Khan, Hafsa; Liu, Jay; Na, Jonggeol

doi:10.1016/j.jclepro.2023.136438

Cited by 55 publications

(12 citation statements)

References 37 publications

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“…The depletion of non-renewable energy sources and the harmful pollution caused by fossil fuel combustion have prompted the development of eco-friendly and sustainable energy storage and production systems. − One promising solution is using supercapacitors for electrochemical energy storage, as they offer high reliability, power density, and cycle durability. , Another green technology is using hydrogen as a fuel through the “hydrogen economy”, which holds great promise for the future. − The most sustainable method for hydrogen production is water splitting through the hydrogen evolution reaction (HER). − However, there is a need to improve the performance of energy storage systems and develop cost-effective electrocatalysts for HER.…”

Section: Introductionmentioning

confidence: 99%

Triazine-Based Two-Dimensional Porous Covalent Organic Framework for Efficient Electrode Materials for Electrocatalytic Hydrogen Generation and Hybrid Supercapacitors

Halder

Chakraborty

2023

ACS Appl. Eng. Mater.

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The urgent need for eco-friendly and sustainable energy storage systems or green energy production methods to combat the detrimental effects of non-renewable fossil fuels is widely recognized. In this context, we have synthesized a pyromellitic diimide and triazine-containing covalent organic framework named PDT-COF and investigated its performance in two key energy applications: electrocatalytic hydrogen evolution reaction (HER) for green hydrogen energy production and electrochemical energy storage for supercapacitor devices. The PDT-COF nanosheets exhibit a high surface area of 312.6 m 2 /g and abundant pores with a size of ∼1.8 nm. Leveraging these features, the metal-free PDT-COF electrocatalyst demonstrates good performance in HER, requiring a minimal overpotential of 210 mV for 10 mA/cm 2 current density. Notably, PDT-COF follows the Heyrovsky−Volmer mechanism for HER and exhibits outstanding durability, sustaining over 60 h of continuous electrocatalysis. Furthermore, the PDT-COF-based asymmetric solid-state device exhibits a specific capacitance of 104 F/g, coupled with a high energy density of 32.55 W h/kg and a power density of 1875 W/kg at a current density of 1 A/g. Importantly, the robustness and cycle stability of the PDT-COF-based asymmetric pseudocapacitor device are confirmed, as it retains 88% of its initial capacitance and maintains a Columbic efficiency of 90% even after 5000 cycles of charge and discharge. Considering these findings, the synthesized PDT-COF material holds great promise as a metal-free electrode material for future applications in hydrogen energy generation and electrochemical energy storage devices.

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Section: Introductionmentioning

confidence: 99%

Triazine-Based Two-Dimensional Porous Covalent Organic Framework for Efficient Electrode Materials for Electrocatalytic Hydrogen Generation and Hybrid Supercapacitors

Halder

Chakraborty

2023

ACS Appl. Eng. Mater.

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“…One of the primary geopolitical implications of the shift towards green hydro-gen-based DRI production is the potential loss of market share and revenue for fossil fuel-exporting countries. As the global demand for green hydrogen increases, there is a risk that the demand for traditional fossil fuels will decline, leading to reduced export revenues for countries that rely heavily on these commodities [69]. This can have sig-nificant economic repercussions for these countries, as their national budgets and eco-nomic stability are often highly dependent on revenues from fossil fuel exports [70].…”

Section: Geopolitical Implicationsmentioning

confidence: 99%

An Overview of the Arguments in Literature, For and Against the Use of Green Hydrogen for the Production of Direct Reduced Iron

Roos

2024

Preprint

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The global steel industry is a major contributor to greenhouse gas emissions, and the adoption of green hydrogen in Direct Reduced Iron (DRI) production has the potential to significantly reduce CO2 emissions and support climate targets. This review explores the environmental, economic, technological, and social implications of using green hydrogen in DRI processes. The findings suggest that green hydrogen can reduce emissions by up to 90% compared to traditional methods, enhance energy security, and stimulate local economic development. However, high initial costs, energy efficiency concerns, and social acceptance issues remain significant barriers. The review also highlights the importance of integrating carbon capture and storage technologies, addressing logistical challenges, and considering the geopolitical implications of a shift towards green hydrogen. Green hydrogen presents a promising solution for decarbonising the steel industry but continued research, investment in infrastructure, and strategic planning are essential to overcome the challenges and drive widespread adoption.

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“…1 Among these, hydrogen (H 2 ) with highest gravimetric energy density of around 142 MJ kg −1 has become one of the fascinating energy alternatives toward sustainable development. 2,3 At this moment, coal gasification and methane reforming have been the two main commercialized technologies for H 2 synthesis, but they suffer from their heavy reliance on fossil fuels, which is detrimental to the environment. 4 As for now, numerous strategies have been proposed for ultrapure H 2 synthesis and electrochemical overall water splitting (OWS) consisting of hydrogen evolution reaction (HER) at the cathode and oxygen (O 2 ) evolution reaction (OER) at the anode has been the emerging topic in the field of energy conversion.…”

Section: Introductionmentioning

confidence: 99%

“…To tackle these obstacles, renewable energies have recently been the focal point of research studies to satisfy tremendous global energy demands 1 . Among these, hydrogen (H 2 ) with highest gravimetric energy density of around 142 MJ kg −1 has become one of the fascinating energy alternatives toward sustainable development 2,3 . At this moment, coal gasification and methane reforming have been the two main commercialized technologies for H 2 synthesis, but they suffer from their heavy reliance on fossil fuels, which is detrimental to the environment 4 .…”

Section: Introductionmentioning

confidence: 99%

Allying interfacial engineering of 2D carbon nanosheet‐, graphene‐, and graphdiyne‐based heterostructured electrocatalysts toward hydrogen evolution and overall water splitting

Mo,

Foo,

Ong

2024

Electron

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Electrochemical hydrogen evolution reaction (HER) and overall water splitting (OWS) for renewable energy generation have recently become a highly promising and sustainable strategy to tackle energy crisis and global warming arising from our overreliance on fossil fuels. Previously, tremendous research breakthroughs have been made in 2D carbon‐based heterostructured electrocatalysts in this field. Such heterostructures are distinguished by their remarkable electrical conductivity, exposed active sites, and mechanical stability. Herein, with fundamental mechanisms of electrocatalytic OWS summarized, our review critically emphasized on state‐of‐the‐art 2D carbon nanosheet‐, graphene‐, and graphdiyne‐based heterostructured electrocatalysts in HER and OWS since 2018. Particularly, the three emerging carbonaceous substrates tend to be incorporated with metal carbides, phosphides, dichalcogenides, nitrides, oxides, nanoparticles, single atom catalysts, or layered double hydroxides. Meanwhile, fascinating structural engineering and facile synthesis strategies were also unraveled to establish the structure–activity relationship, which will enlighten future electrocatalyst developments toward ameliorated HER and OWS activities. Additionally, computational results from density functional theory simulations were highlighted as well to better comprehend the synergistic effects within the heterostructures. Finally, current stages and future recommendations of this brand‐new electrocatalyst type were concluded and discussed for advanced catalyst designs and future practical applications.

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Green hydrogen and sustainable development – A social LCA perspective highlighting social hotspots and geopolitical implications of the future hydrogen economy

Cited by 55 publications

References 37 publications

Triazine-Based Two-Dimensional Porous Covalent Organic Framework for Efficient Electrode Materials for Electrocatalytic Hydrogen Generation and Hybrid Supercapacitors

Triazine-Based Two-Dimensional Porous Covalent Organic Framework for Efficient Electrode Materials for Electrocatalytic Hydrogen Generation and Hybrid Supercapacitors

An Overview of the Arguments in Literature, For and Against the Use of Green Hydrogen for the Production of Direct Reduced Iron

Allying interfacial engineering of 2D carbon nanosheet‐, graphene‐, and graphdiyne‐based heterostructured electrocatalysts toward hydrogen evolution and overall water splitting

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