A Dendrite‐Resistant Sodium/Porous‐Carbon Anode for Solid‐State Batteries: Strategies and Challenges for Low‐Pressure Operation
低圧動作のためのデンドライト耐性ナトリウム/多孔質炭素アノード全固体電池：戦略と課題 (AI 翻訳)
J. Mark Weller, Joseph P. Quinn, Evgueni Polikarpov, Henry Hyungkyu Han, Marcos Lucero, Guosheng Li
🤖 gxceed AI 要約
日本語
本論文は、ナトリウム全固体電池（Na-SSB）において、多孔質炭素界面層を用いることで低圧力下での高性能サイクルを実現した。対称セルで25°C、10 mA cm⁻²の電流密度、60°Cで1 mAh cm⁻²の容量を達成。界面変化を調べ、デンドライト耐性を確認。Na-SSBの実用化に貢献する。
English
This paper demonstrates a porous carbon interfacial layer enabling low-pressure cycling of sodium solid-state batteries (Na-SSBs). Symmetric cells achieve up to 10 mA cm⁻² at 25°C and 1 mAh cm⁻² at 60°C. Interfacial evolution is investigated, showing void formation and Na extraction, yet excellent dendrite resistance is maintained. A full cell with Na-transition-metal-oxide cathode delivers ~2.7 mAh cm⁻². This work advances practical Na-SSBs without excessive stack pressure.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本はエネルギー貯蔵技術の開発に注力しており、本成果は低圧動作可能なNa-SSBの実現に向けた重要な一歩である。日本の電池産業や全固体電池研究に示唆を与える。
In the global GX context
This research contributes to the global energy transition by improving solid-state battery performance under practical conditions. It supports the deployment of safer, more abundant sodium-based batteries for stationary storage and electric vehicles, aligning with net-zero goals.
👥 読者別の含意
🔬研究者:Battery researchers can adopt the porous carbon interface strategy to mitigate dendrites in solid-state sodium batteries, enabling low-pressure operation.
🏢実務担当者:Corporate R&D teams in battery manufacturing may explore this approach for developing commercial solid-state batteries with reduced stack pressure requirements.
🏛政策担当者:Policymakers should note advancements in solid-state battery technology that can enhance energy storage safety and performance, supporting renewable integration.
📄 Abstract（原文）
Sodium solid‐state batteries (Na‐SSBs) are attracting growing interest due to the abundance of Na over Li, but they still tend to fail under practical current densities and cycling capacities due to dendrites, and are therefore frequently evaluated under impractically high stack pressures. Here, a porous carbon interfacial layer is utilized in conjunction with Na‐ß″‐Al 2 O 3 solid electrolytes (BASE) to enable Na‐cycling at milder cell pressures. This sodium/porous carbon layer enables improved solid‐state Na cycling in symmetric cells, up to a current density of 10 mA cm −2 at 25 °C. 1 mAh cm −2 capacity can be reliably cycled at 1 mA cm −2 at an elevated temperature of 60 °C in symmetric cells. Interfacial evolution is investigated via cryogenic ion milling and cross‐sectional imaging, revealing void formation, Na extraction from porous carbon, and/or delamination of the porous carbon matrix at the Na‐metal/BASE interface, depending on temperature, pressure, current density, and areal capacity. Despite these interfacial changes, excellent dendrite resistance is maintained. A quasi‐solid‐state full cell using a Na‐transition‐metal‐oxide cathode delivers an areal capacity of ∼2.7 mAh cm −2 at 0.125 mA cm −2 . This work demonstrates an alternative pathway toward an Na‐metal anode in Na‐SSBs without excessive stack pressure.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/cssc.70879first seen 2026-07-17 05:01:51
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