Unraveling Microporosity in Hard Carbons: Insights Into Sustainable Sodium‐Ion Battery Materials

A comprehensive methodology is proposed for the quantitative analysis of microporosity in HC for SIBs anodes. SAXS coupled with the Ruland–Smarsly approach enables the detection of closed pores and accurate estimation of surface area and pore‐size distribution beyond BET limitations. Two representative materials, a petroleum‐based and a biowaste‐derived HC, were compared to correlate nanostructural features with electrochemical behavior. Complementary XRD, Raman spectroscopy, and SEM support the SAXS interpretation by revealing differences in crystallinity and morphology. The results show that sustainable biowaste‐derived carbons achieve performance comparable to commercial ones. This SAXS‐based framework provides a reproducible route to probe nanoscale disorder in carbon anodes and guides the rational design of efficient and low‐impact materials for next‐generation SIBs.

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Publication Details

Journal
Batteries & Supercaps
Published
2026-08-24
DOI
https://doi.org/10.1002/batt.70430
Primary Topic
Advancements in Battery Materials
Type
article
Field-Weighted Citation Impact
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article

Unraveling Microporosity in Hard Carbons: Insights Into Sustainable Sodium‐Ion Battery Materials

Flaminia Rondino, Giorgia Greco, Philipp Adelhelm, Alessandra Del Giudice et al.
Batteries & Supercaps
Advancements in Battery Materials
article

Unraveling Microporosity in Hard Carbons: Insights Into Sustainable Sodium‐Ion Battery Materials

Flaminia Rondino, Giorgia Greco, Philipp Adelhelm, Alessandra Del Giudice, Serena Gagliardi, Sonila Xhafa, Sergio Brutti, M. Falconieri, Asia Patriarchi, Maria Di Pea
article en

Abstract

A comprehensive methodology is proposed for the quantitative analysis of microporosity in HC for SIBs anodes. SAXS coupled with the Ruland–Smarsly approach enables the detection of closed pores and accurate estimation of surface area and pore‐size distribution beyond BET limitations. Two representative materials, a petroleum‐based and a biowaste‐derived HC, were compared to correlate nanostructural features with electrochemical behavior. Complementary XRD, Raman spectroscopy, and SEM support the SAXS interpretation by revealing differences in crystallinity and morphology. The results show that sustainable biowaste‐derived carbons achieve performance comparable to commercial ones. This SAXS‐based framework provides a reproducible route to probe nanoscale disorder in carbon anodes and guides the rational design of efficient and low‐impact materials for next‐generation SIBs.

Batteries & SupercapsVol. 9(9)
National Agency for New Technologies, Energy and Sustainable Economic Development (IT), Università di Camerino (IT), Helmholtz-Zentrum Berlin für Materialien und Energie (DE), Humboldt-Universität zu Berlin (DE), Alistore (FR), Centro di Riferimento Oncologico (IT), Sapienza University of Rome (IT)
Responsible consumption and production
Openalex Percentile: Top 100%
Advancements in Battery Materials
DOIOpen Access PDFOpenAlex
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