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Recently, lithium-ion battery storage system has become increasingly popular due to its enormous potential and capacity in renewable energy integration and e-mobility applications leading to achieve global carbon neutrality by 2050. However, the performance of lithium-ion batteries has been affected due to the material degradation as well as varying environmental conditions. Thus, this paper presents analytical evaluation, aiming to investigate the advancement on the state-of-the-art of lithium-ion battery material potential that has been mapped from the hot papers. Accordingly, 73 hot papers (top 0.1% highly cited) have been found using the keyword search on lithium-ion batteries from the Web of Science database published in last 2 years between 2019 and 2021. These hot papers are evaluated using various key factors, including state-of-the-art of lithium-ion battery materials followed by analytical evaluation. The analytical assessment comprises numerous crucial aspects including keyword co-occurrence network analysis, distribution of articles over countries, journals, research types, and subject categories. Moreover, the review explores the concerns, issues and challenges to identify the existing research gaps. Finally, the review uncovers promising research opportunities and directions that will support the researchers towards energy efficiency, environmental sustainability of advanced lithium-ion battery management system. [Display omitted] • Lithium-ion battery material potential is analytically evaluated towards future research directions. • Hot paper earns a significant number of citations which is top 0.1 percent on the field. • The analytical evaluation is comprehensively done based on keyword co-occurrence network analysis. • Existing research gaps, issues and challenges on LIB materials are highlighted for future development. • This study will assist researchers and industries to develop an energy efficient advanced LIB. [ABSTRACT FROM AUTHOR]

Regions are the most important administrative units of the EU's development policies and so far, have been extensively used for framing and implementing strategic priorities. However, when it comes to regional implementation of the circular economy (CE), there is lack of systematicity both in academic literature and policy documents. Therefore, the main purpose of this study is to improve the understanding of the regional adoption of CE, by systematically reviewing and synthesises the current academic literature in this emerging field, unveiling research gaps and discussing a future research agenda. The review was conducted by identifying relevant academic papers from leading journals using the Scopus and Web of Science databases. Overall, 82 relevant papers were identified through the review, which proceeded to descriptive, bibliometric and content analysis. This study has found that generally, the adoption of the circular economy on the regional level is underexplored, which was supported by the dearth of relevant academic contributions detected at the beginning of the process. To the best of the researchers' knowledge, this is the first attempt to provide a holistic systematic literature review in the regional circular economy domain. Hence, the present study is considered as a crucial initial contribution in the direction of establishing robust conceptual frameworks which involve the constructs of regional circular economy and laying the groundwork for future studies in this field. • Regions constitute the minimum optimal adoption level for building a functional CE. • NUTS 2 level regions are proposed as a regional unit for CE implementation. • The literature on regional CE implementation is highly fragmented. • Robust conceptual frameworks with regional CE constructs are needed. [ABSTRACT FROM AUTHOR]

In recent years, the concept of a circular economy (CE) has gained importance and attracted significant attention among scholars and practitioners. Research that examines the role of modern technologies in supporting the transition from a linear economy to the CE is therefore highly needed. This article analyzes and classifies existing research at the intersection of the CE and the Internet of Things (IoT), as an enabling technology. While studies on both concepts have proliferated, there is a lack of research that systematizes the literature and clarifies the relationship between the IoT and the CE. In order to achieve this, we reviewed a total of 170 academic articles published between 2007 and 2021 from the Scopus and Web of Science databases. Based on the coding of keywords, four categories can be identified: (1) IoT-related technologies in the CE context, (2) enablers of IoT in the CE, (3) barriers to IoT adoption in the CE, and (4) the impacts of the IoT on the sustainability of (circular) economies. The current study is the first attempt to use a keyword coding approach to better understand IoT research in the CE domain. The review findings identify important drivers and enablers and provide a structured framework for research in this field. Finally, this study highlights several research directions that may provide valuable insights for researchers and practitioners. [ABSTRACT FROM AUTHOR]