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ACS Appl Mater Interfaces. 2018 Oct 24;10(42):35978-35983. doi: 10.1021/acsami.8b11824. Epub 2018 Oct 11.

All Carbon Dual Ion Batteries.

Author information

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry , Nankai University , Tianjin 300071 , China.
Institute for Superconducting and Electronic Materials , University of Wollongong , Wollongong , New South Wales 2522 , Australia.
Department of Energy and Materials Engineering , Dongguk University-Seoul , Seoul 100-715, Republic of Korea.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China.


Dual ion batteries based on Na+ and PF6- received considerable attention due to their high operating voltage and the abundant Na resources. Here, cheap and easily obtained graphite that served as a cathode material for dual ion battery delivered a very high average discharge platform (4.52 V vs Na+/Na) by using sodium hexafluorophosphate in propylene carbonate as electrolyte. Moreover, the all-carbon dual ion batteries with graphite as cathode and hard carbon as anode exhibited an ultrahigh discharge voltage of 4.3 V, and a reversible capacity of 62 mAh·g-1 at 40 mA·g-1. Phase changes have been investigated in detail through in situ X-ray diffraction and in situ Raman characterizations. The stable structure provides long life cycling performance, and the pseudocapacitance behavior also demonstrates its benefits to the rate capability. Thus, dual ion batteries based on sodium chemistry are very promising to find their applications in future.


Anion ion batteries; Dual ion batteries; Graphite; Hard carbon; Pseudocapacitance


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