Journal Article

FZJ-2024-02467

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Combining Janus Separator and Organic Cathode for Dendrite‐Free and High‐Performance Na‐Organic Batteries

Wu, Y. (Corresponding author) ; Wang, X. ; Zhang, F. ; Hai, L. ; Chen, Q. ; Chao, C. ; Yang, A.FZJ* ; Sun, Y. (Corresponding author) ; Jia, D. (Corresponding author)

2024
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/adfm.202309552

Abstract: The growth of Na-dendrites and the dissolution of organic cathodes are twomajor challenges that hinder the development of sodium-organic batteries(SOBs). Herein, a multifunctional Janus separator (h-BN@PP@C) by using aninterfacial engineering strategy, is proposed to tackle the issues of SOBs. Thecarbon layer facing the organic cathode serves as a barrier to capturedissolved organic materials and enhance their utilization. Meanwhile, theh-BN layer facing the Na anode possesses high thermal conductivity andmechanical strength, which mitigates the occurrence of localized-temperature“hot spots” and promotes the formation of a NaF-enriched SEI, therebysuppressing dendrite growth. Consequently, the Janus separator enables astable Na plating/stripping cycling for 1000 h at 3 mA cm−2. Equipped withthe Janus separator, organic cathodes including dibenzo[b,i]thianthrene-5,7,12,14-tetraone (DTT), pentacene-5,7,12,14-tetrone andCalix[4]quinone cathodes demonstrate high capacity and remarkable cyclingperformance. In particular, the DTT exhibits a bipolar co-reaction storagemechanism and achieves an ultrahigh capacity (≈342.6 mAh g−1), long-termcycling stability (capacity decay rate of 0.15% per cycle over 550 cycles at500 mA g−1) and fast kinetics (1000 mA g−1≈2.8 C). This study offers astraightforward, effective, and promising solution to address the challenges in SOBs.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 1221 - Fundamentals and Materials (POF4-122) (POF4-122)

Appears in the scientific report 2024

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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