Review of 'Interfacial engineering to achieve an energy density of over 200 Wh kg−1 in sodium batteries'

The article presents innovative approaches to interfacial engineering aimed at enhancing the energy density of sodium batteries. By addressing critical challenges related to sodium-ion transport and interfacial stability, the authors propose methods that could significantly improve performance metrics.

Strengths:

1. Innovative Approach: The focus on interfacial engineering is timely and relevant, particularly in the context of emerging energy storage technologies.
2. Comprehensive Analysis: The article includes thorough experimental results and well-structured discussions that highlight the importance of interfacial properties.
3. Potential Impact: Achieving energy densities above 200 Wh kg−1 could greatly advance the feasibility of sodium batteries for commercial applications.

Areas for Improvement:

1. Clarity and Detail: Some sections, particularly the methodologies, could benefit from greater clarity. More detailed explanations of the experimental setup and the rationale behind specific choices would enhance reproducibility.
2. Literature Context: While the authors reference key studies, a more comprehensive review of recent advancements in sodium battery technology would provide a better context for their contributions.
3. Discussion of Limitations: A discussion on the limitations of the proposed methods and potential challenges in scaling them for commercial use would provide a more balanced perspective.

Conclusion: Overall, this article makes a significant contribution to the field of sodium battery research through its novel approach to interfacial engineering. With some revisions to enhance clarity and depth, it has the potential to be a valuable resource for researchers and industry professionals alike.