Zn3V2O8 porous morphology derived through a facile and green approach as an excellent anode for high-energy lithium ion batteries

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 328; pp. 454 - 463
• Main Authors: Sambandam, Balaji, Soundharrajan, Vaiyapuri, Song, Jinju, Kim, Sungjin, Jo, Jeonggeun, Pham, Duong Tung, Kim, Seokhun, Mathew, Vinod, Kim, Jaekook
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-11-2017
• Subjects: Green synthesis; High cycling stability; Lithium ion batteries; Zeolitic imidazolate framework; Zn3V2O8 porous sheets; Lithium ion batteries; Zeolitic imidazolate framework; Green synthesis; High cycling stability; Zn3V2O8 porous sheets
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2017.07.050

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•Zn3V2O8 porous sheets morphology are synthesized by facile and green method.•It shows excellent structure and electrochemical stability for lithium ion batteries.•It delivers specific capacity of 1128mAhg−1 after 200 cycles at 0.3Ag−1.•It shows high capacity of 370mAhg−1 over 2000 cycles at 5Ag−1.
Zn3V2O8 (ZVO) with sheet-like morphology is synthesized by a simple green precipitation technique via a metal-organic framework (MOF) intermediate for use as an anode in high energy lithium-ion batteries (LIBs). This sheet-like morphology, enriched with highly porous features, is evident from transmission electron microscopy (TEM) and surface area measurements. When tested as a lithium half-cell electrode, the ZVO porous sheets delivered a reversible specific capacity of 1228mAhg−1 at a current density of 0.3Ag−1 for 200 cycles. Interestingly, on applying two different high current densities of 1 and 3Ag−1, this porous ZVO material registered high capacities of 665 and 510mAhg−1, initially for 30 and 50 cycles, respectively. On reducing the current density to 0.5 and 1Ag−1 for the two instances, both sustained stable capacities of 906 and 687mAhg−1 in the 160th and 600th cycles, respectively. The fact that these porous sheets maintained a stable capacity as high as 370mAhg−1 at the high applied current density of 5Ag−1 after 2000 discharge/charge cycles reveals the structural stability of the ZVO prepared by a simple green precipitation technique.