A Hybrid Energy Storage Mechanism of Zinc Hexacyanocobaltate-Based Metal-Organic Framework Endowing Stationary and High-Performance Lithium-Ion Storage

Authors
Zhang, KaiqiangLee, Tae HyungJang, Ho WonShokouhimehr, MohammadrezaChoi, Ji-Won
Issue Date
2019-07
Publisher
KOREAN INST METALS MATERIALS
Citation
ELECTRONIC MATERIALS LETTERS, v.15, no.4, pp.444 - 453
Abstract
Lithium-ion batteries (LIBs) are considered to be theoretically promising with regard to large-scale energy storage and conversion systems. However, a significant problem is the lack of cost-efficient high-performance cathode materials for LIBs. In this study, we demonstrate a Prussian blue analog, zinc hexacyanocobaltate (ZnHCCo), as the low-cost and high-performance cathode material for LIBs. The open-framework crystal structure of ZnHCCo contributes toward reversible cation insertion and extraction along with the spontaneous valence change of hosts. Specifically, the as-prepared ZnHCCo exhibits a highly reversible capacity of 121.5mAhg(-1) at a current density of 1.25C, a superior rate capability of 60.5mAhg(-1) at 6.25C, and a stable cycling stability with a Coulombic efficiency of 96.5%. Therefore, the well-crystallized and low-cost ZnHCCo is expected to be a potential cathode material for LIBs used in grid-scale energy storage and conversion systems. In addition, the synthesis process of the electrode material can be readily up scaled using the earth abundant and environmentally benign precursors via a room-temperature wet-chemical method. [GRAPHICS] .
Keywords
PRUSSIAN WHITE ANALOGS; CATHODE MATERIAL; HEXACYANOFERRATE NANOPARTICLES; ANODE MATERIALS; BLUE ANALOG; LI-ION; BATTERY; SODIUM; INSERTION; PRUSSIAN WHITE ANALOGS; CATHODE MATERIAL; HEXACYANOFERRATE NANOPARTICLES; ANODE MATERIALS; BLUE ANALOG; LI-ION; BATTERY; SODIUM; INSERTION; Cathode; Coulombic efficiency; Lithium-ion battery; Prussian blue analogs; Zinc hexacyanocobaltate
ISSN
1738-8090
URI
https://pubs.kist.re.kr/handle/201004/119854
DOI
10.1007/s13391-019-00146-7
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KIST Article > 2019
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