ペリレン系炭素層を用いたハードカーボンと固体電解質間の界面工学による全固体電池の開発
Interfacial engineering between hard carbon and solid electrolytes using perylene-based carbon layers for all-solid-state batteries (原題)
Jielin Ding, Yuto Miyahara, Xinli Gao, Yoshito Chikano, Kiyomi Ishizawa, Kohei Miyazaki, Shuushi Nishimura, Minoru Kuzuhara, Takeshi Abe
🤖 gxceed AI 要約
日本語
硫化物系全固体リチウムイオン電池の負極材として、ハードカーボン表面をPTCDA由来の部分炭化層で修飾する手法を提案。2〜150nmの不均一コーティングにより細孔構造を保持しつつ、可逆容量約600mAh/g・初回クーロン効率約85%を達成し、未コーティング比で容量+100mAh/g・効率+10%を実現した。界面密着性向上によるLiイオン輸送改善が性能向上の要因であり、界面接触が電気化学特性を左右することを示す。
English
This study modifies hard carbon anodes with a partially carbonized PTCDA coating for sulfide-based all-solid-state Li-ion batteries. The 2–150 nm coating preserves pore structure and boosts reversible capacity to ~600 mAh/g with ~85% initial coulombic efficiency (+100 mAh/g, +10% vs uncoated). Improved interfacial adhesion between hard carbon and solid electrolyte enhances Li-ion transport, offering a design principle for high-performance anodes.
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
全固体電池はEV普及と輸送部門脱炭素の中核技術であり、日本が強みを持つ電池産業の競争力に直結する。SSBJや有報での気候関連開示においても、EV・蓄電池の技術革新は移行計画(トランジション・プラン)の実現可能性を裏付ける要素となる。
In the global GX context
All-solid-state batteries are central to EV deployment and transport decarbonization, a key lever in corporate transition plans under ISSB/CSRD. While the paper is materials-science focused, it strengthens the technological feasibility narrative that underpins climate transition disclosures in the automotive and battery sectors.
👥 読者別の含意
🔬研究者:全固体電池負極の界面設計における炭素コーティングの有効性を示す基礎的知見を提供する。
🏢実務担当者:EV・電池関連企業の技術ロードマップ検討や移行計画の技術的裏付けとして参照可能。
🏛政策担当者:蓄電池産業政策やEV普及戦略の技術的根拠として間接的に有用。
📄 Abstract(原文)
The development of negative electrode materials that combine high capacity, high rate capability, and excellent durability remains a critical challenge for sulfide-based all-solid-state lithium-ion batteries (ASSLIBs). Herein, we demonstrate that the surface modification of hard carbon (HC) with a partially carbonized 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) coating not only enables its application as a promising negative electrode material but also offers critical insights into the role of interfacial contact. A non-uniform coating layer with a thickness of 2–150 nm was introduced while preserving the pore structure of the HC. The surface-modified HC delivered a reversible capacity of approximately 600 mAh g −1 with an initial coulombic efficiency of ~85%, representing an increase of 100 mAh g −1 and 10% over the uncoated HC, respectively. The increased reversible capacity was ascribed to an improved Li-ion transport resulting from the superior interfacial adhesion between the HC and solid electrolyte. Furthermore, the surface-modified HC exhibited enhanced charging rate capability and capacity retention, highlighting its potential as a high-performance negative electrode material for ASSLIBs. These findings underscore the decisive role of interfacial contact in determining electrochemical performance. This study provides a design principle for tailoring HC surfaces and opens new possibilities for developing high-performance negative electrode materials for ASSLIBs.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.est.2026.124921first seen 2026-10-07 05:05:15
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