Abstract
A novel free-standing Na4Mn9O18/reduced graphene oxide (NMO-RGO) composite was successfully prepared by a facile vacuum filtration technique. Scanning and transmission electron microscopy studies revealed formation of a film with needle-like Na4Mn9O18 homogeneously distributed and anchored on the RGO matrix. A sodium rechargeable hybrid aqueous battery with this novel cathode and zinc anode was first investigated and reported. The NMO-RGO film delivered a reversible discharge capacity of about 83 mAh g−1 when cycled galvanostatically at a current density of 0.1 A g−1, which was for about 78% higher than that of Na4Mn9O18 prepared by a slurry casting technique. This significant enhancement of electrochemical properties of NMO-RGO was due to the presence of graphene sheets in this free-standing composite cathode. These sheets form an agile substrate with a high conductivity to guarantee a successive electronic conduction channels in the electrode. In the same time, such composition and structure enables accommodation of the volume changes of Na4Mn9O18 during sodium insertion-extraction.
| Original language | English |
|---|---|
| Pages (from-to) | 647-654 |
| Number of pages | 8 |
| Journal | Electrochimica Acta |
| Volume | 259 |
| DOIs | |
| Publication status | Published - Jan 1 2018 |
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Keywords
- Cathode material
- Composite film
- Free-standing electrode
- NaMnO/reduced graphene oxide
- Rechargeable hybrid aqueous battery
ASJC Scopus subject areas
- Chemical Engineering(all)
- Electrochemistry
Cite this
Flexible free-standing Na4Mn9O18/reduced graphene oxide composite film as a cathode for sodium rechargeable hybrid aqueous battery. / Yuan, Guanghui; Xiang, Jiming; Jin, Huafeng; Jin, Yanzi; Wu, Lizhou; Zhang, Yongguang; Mentbayeva, Almagul; Bakenov, Zhumabay.
In: Electrochimica Acta, Vol. 259, 01.01.2018, p. 647-654.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Flexible free-standing Na4Mn9O18/reduced graphene oxide composite film as a cathode for sodium rechargeable hybrid aqueous battery
AU - Yuan, Guanghui
AU - Xiang, Jiming
AU - Jin, Huafeng
AU - Jin, Yanzi
AU - Wu, Lizhou
AU - Zhang, Yongguang
AU - Mentbayeva, Almagul
AU - Bakenov, Zhumabay
PY - 2018/1/1
Y1 - 2018/1/1
N2 - A novel free-standing Na4Mn9O18/reduced graphene oxide (NMO-RGO) composite was successfully prepared by a facile vacuum filtration technique. Scanning and transmission electron microscopy studies revealed formation of a film with needle-like Na4Mn9O18 homogeneously distributed and anchored on the RGO matrix. A sodium rechargeable hybrid aqueous battery with this novel cathode and zinc anode was first investigated and reported. The NMO-RGO film delivered a reversible discharge capacity of about 83 mAh g−1 when cycled galvanostatically at a current density of 0.1 A g−1, which was for about 78% higher than that of Na4Mn9O18 prepared by a slurry casting technique. This significant enhancement of electrochemical properties of NMO-RGO was due to the presence of graphene sheets in this free-standing composite cathode. These sheets form an agile substrate with a high conductivity to guarantee a successive electronic conduction channels in the electrode. In the same time, such composition and structure enables accommodation of the volume changes of Na4Mn9O18 during sodium insertion-extraction.
AB - A novel free-standing Na4Mn9O18/reduced graphene oxide (NMO-RGO) composite was successfully prepared by a facile vacuum filtration technique. Scanning and transmission electron microscopy studies revealed formation of a film with needle-like Na4Mn9O18 homogeneously distributed and anchored on the RGO matrix. A sodium rechargeable hybrid aqueous battery with this novel cathode and zinc anode was first investigated and reported. The NMO-RGO film delivered a reversible discharge capacity of about 83 mAh g−1 when cycled galvanostatically at a current density of 0.1 A g−1, which was for about 78% higher than that of Na4Mn9O18 prepared by a slurry casting technique. This significant enhancement of electrochemical properties of NMO-RGO was due to the presence of graphene sheets in this free-standing composite cathode. These sheets form an agile substrate with a high conductivity to guarantee a successive electronic conduction channels in the electrode. In the same time, such composition and structure enables accommodation of the volume changes of Na4Mn9O18 during sodium insertion-extraction.
KW - Cathode material
KW - Composite film
KW - Free-standing electrode
KW - NaMnO/reduced graphene oxide
KW - Rechargeable hybrid aqueous battery
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UR - http://www.scopus.com/inward/citedby.url?scp=85033384929&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2017.11.015
DO - 10.1016/j.electacta.2017.11.015
M3 - Article
VL - 259
SP - 647
EP - 654
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -