Journal: Renewable and Sustainable Energy Reviews

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Abbreviation

Renew. sustain. energy rev.

Publisher

Elsevier

Journal Volumes

ISSN

1364-0321

Description

Search Results

Publications1 - 10 of 74
  • Venkatesan, Suriya; Mitzel, Jens; Wegner, Karsten; et al. (2022)
    Renewable and Sustainable Energy Reviews
    Significant progress has been achieved in the development of nanomaterials for polymer electrolyte membrane fuel cells (PEMFC) and solid oxide cells (SOC). However, the limited scalability and multi-step processing of the conventional synthesis routes for the electrocatalysts, their supports and thin functional films in general (e.g., co-precipitation and solid-state synthesis) remain a great challenge for inexpensive production of these energy materials and cells. These drawbacks could be overcome by flame spray pyrolysis (FSP), a simple, rapid, scalable and single step fabrication technique. Here, a comprehensive review on flame-based synthesis and deposition techniques with a major focus on FSP for PEMFCs and SOCs is presented. Flame-made materials of practical importance including Pt, Pt alloys, metal-nitrogen-carbon catalysts, perovskites and catalyst support structures, and their performance are discussed along with challenges and opportunities to bridge the gap between materials research and cell development.
  • Is it only CO2 that matters?
    Item type: Review Article
    Saner, Dominik; Juraske, Ronnie; Kübert, Markus; et al. (2010)
    Renewable and Sustainable Energy Reviews
  • Komendantova, Nadejda; Patt, Anthony; Williges, Keith (2011)
    Renewable and Sustainable Energy Reviews
  • Luo, Wen; Kottsova, Anna; Vardon, Philip James; et al. (2023)
    Renewable and Sustainable Energy Reviews
    In geothermal projects, reinjection of produced water has been widely applied for disposing wastewater, supplying heat exchange media and maintaining reservoir pressure. Accordingly, it is a key process for environmental and well performance assessment, which partly controls the success of projects. However, the injectivity, a measure of how easily fluids can be reinjected into reservoirs, is influenced by various processes throughout installation and operation. Both injectivity decline and enhancement have been reported during reinjection operations, while most current studies tend to only focus on one aspect. This review aims to provide a comprehensive discussion on how the injectivity can be influenced during reinjection, both positively and negatively. This includes a detailed overview of the different clogging mechanisms, in which decreasing reservoir temperature plays a major role, leading to injectivity decline. Strategies to avoid and recover from injectivity reduction are also introduced. Followed is an overview of mechanisms underlying injectivity enhancement during reinjection, wherein re-opening/shearing of pre-existing fractures and thermal cracking have been identified as the main contributors. In practice, nevertheless, mixed-mechanism processes play a key role during reinjection. Finally, this review provides an outlook on future research directions that can enhance the understanding of injectivity-related issues.
  • Mavromatidis, Georgios; Orehounig, Kristina; Carmeliet, Jan (2018)
    Renewable and Sustainable Energy Reviews
  • Liu, Zipeng; Zhang, Meixi; Bauer, Christian; et al. (2025)
    Renewable and Sustainable Energy Reviews
    Low-carbon fuels (LCFs) are crucial for achieving net-zero CO2 emission goals in integrated assessment model (IAM) and energy system model (ESM) scenarios. The absence of a standardized LCF classification system and inconsistencies in modeling approaches have obscured the integration of various LCFs within these models and makes a meaningful comparison of scenario outcomes difficult. This study addresses these issues by conducting a comprehensive critical review of the representation of LCFs in IAMs and ESMs, focusing on the fuel's role in shaping net-zero emission futures. We categorize LCFs into key groups, including electrification, hydrogen, synfuels, and biofuels. Our analysis reveals substantial gaps in technical modeling, lifecycle emissions data, incomplete modeling of environmental impacts beyond CO2 emission, and discrepancies in LCF applications across sectors. To enhance the accuracy of future scenarios, we recommend adopting a unified LCF classification system, standardized input data, and more detailed sectoral applications. Additionally, we advocate for the integration of Life Cycle Assessment (LCA) into IAMs and ESMs to improve the evaluation of LCFs' full environmental impacts, providing a more comprehensive foundation for net-zero emission pathways.
  • Heeren, Niko; Jakob, Martin; Martius, Gregor; et al. (2013)
    Renewable and Sustainable Energy Reviews
  • Gschwendtner, Christine; Sinsel, Simon Robert; Stephan, Annegret (2021)
    Renewable and Sustainable Energy Reviews
  • Liu, Laibao; Wang, Zheng; Wang, Yang; et al. (2020)
    Renewable and Sustainable Energy Reviews
    China has set ambitious goals to cap its carbon emissions and increase low-carbon energy sources to 20% by 2030 or earlier. However, wind and solar energy production can be highly variable: the stability of single wind/solar and hybrid wind-solar energy and the effects of wind/solar ratio and spatial aggregation on energy stability remain largely unknown in China, especially at the grid cell scale. To address these issues, we analyzed the newly 2007–2014 hourly wind and solar data, which have higher resolution and quality than those used in previous research. The stability of single wind/solar energy production clearly increased as the wind/solar energy capacity factor increased, and there were significant functional relationships between single wind/solar energy stability and the wind/solar energy capacity factor. Highly stable wind energy was concentrated in eastern Inner Mongolia, northeastern China, and northern China while highly stable solar energy was concentrated in the Tibetan Plateau, Inner Mongolia, and northwestern China. Different wind/solar ratios affected the stability of hybrid wind-solar energy through a unimodal relationship, allowing us to produce a map of optimal wind/solar ratios throughout China in order to minimize the variability of hybrid wind-solar energy production. At the optimal wind/solar ratio, the most stable hybrid wind-solar energy was concentrated in eastern Inner Mongolia, northeastern China, and northern China. The variability of single and hybrid wind/solar energy decreased as the aggregated area size increased, especially for wind-dominated energy systems. These results have important practical applications: (a) using the optimal wind/solar ratio to install simple hybrid wind-solar energy systems locally; (b) prioritizing the deployment of large-scale wind farms or centralized solar photovoltaic stations in regions with high hybrid energy stability; and (c) strongly promoting regional cooperation, such as breaking inter-provincial power grid barriers, to reduce the variability of hybrid wind-solar energy production and thus operational costs.
  • L'Orange Seigo, Selma; Dohle, Simone; Siegrist, Michael (2014)
    Renewable and Sustainable Energy Reviews
Publications1 - 10 of 74