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February 25, 2026ACS Energy Letters0 citationsOpen Access

Electrochemical Compression and Structural Dynamics in Sodium-Intercalated Graphite with Diamine...

Electrochemical Compression and Structural Dynamics in Sodium-Intercalated Graphite Using Diamine Electrolytes

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Authors

KPKritin PirabulZGZachary T. GossageHSHiroiki Sakai

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Overview

Operando X-ray diffraction reveals structural dynamics in sodium-ion batteries, suggesting improved energy density.

Key Points

  • This research aims to explore the structural changes in sodium-intercalated graphite when using diamine electrolytes compared to traditional diglyme.
  • Utilized operando X-ray diffraction to observe structural evolution during cointercalation.
  • Compared the performance of diamines like 1,3-diaminopentane (13DAP) with diglyme (G2) in graphite.
  • Investigated the effects of varying concentrations of G2 on Na+ binding and structural rearrangement.
  • Identified reversible expansion and compression events in graphite associated with 13DAP cointercalation.
  • Observed higher discharge capacities with 13DAP compared to G2.
  • Noted minimal 13DAP coinsertion in higher G2 concentrations, suggesting stronger Na+ binding.

Cite This Study

Pirabul et al. (2026) studied this question.

synapsesocial.com/papers/699e921bf5123be5ed0502e6https://doi.org/10.1021/acsenergylett.5c03764
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