Nano-sized split V2O5 with H2O-intercalated interfaces as a stable cathode for zinc ion batteries without an aging process
- Yoo, Geun; Koo, Bon-Ryul; An, Geon-Hyoung
- Issue Date
- ELSEVIER SCIENCE SA
- Zinc-ion batteries; Cathode; Vanadium oxide; Activation process
- CHEMICAL ENGINEERING JOURNAL, v.434
- Journal Title
- CHEMICAL ENGINEERING JOURNAL
- Zinc-ion batteries (ZIBs) have emerged as a promising alternative to lithium-ion batteries (LIBs) owing to the abundance of zinc source, their satisfactory safety levels, low cost, and eco-friendliness. However, the volume expansion of vanadium pentoxide (V2O5), which is used as the cathode material in ZIBs, from the insertion/ desertion of Zn ion in the initial cycles (known as the aging process) leads to the generation of cracks and voids in electrode; thus, leading to an unstable capacity behavior. Consequently, the high capacity potential of V2O5 cannot be effectively utilized. In this study, nanosized split V2O5 with H2O-intercalated interfaces (NSVOHI) is prepared as a ZIB cathode material using an electrochemical activation process. The NSVOHI is utilized in a ZIB without an aging process, and the ZIB exhibits a stable capacity behavior, excellent energy storage performance, and reversibility, with an enhanced specific capacity of 457 mAh g(-1) at a current density of 0.1 A g(-1), and an outstanding cycling stability with a capacity retention of 91% for 200 cycles at a current density of 1.3 A g(-1). Furthermore, a fabricated all-solid-state ZIB exhibits an excellent energy storage performance and good mechanical feasibility without an aging process.
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- 융합기술공과대학 > Department of Energy Engineering > Journal Articles
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