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學年
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110 |
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學期
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1 |
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出版（發表）日期
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2022-01-11 |
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作品名稱
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Interfacial Engineered Vanadium Oxide Nanoheterostructures Synchronizing High-Energy and Long-Term Potassium-Ion Storage |
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作品名稱（其他語言）
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著者
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Xiaoxiao Kuai, Ke Li, Jianmei Chen, Hao Wang, Junyi Yao, Chao-Lung Chiang, Tingting Liu, Hanzhang Ye, Jianqing Zhao, Yan-Gu Lin, Labao Zhang, Valeria Nicolosi, Lijun Gao |
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單位
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出版者
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著錄名稱、卷期、頁數
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ACS Nano, 16(1), 1502-1510 |
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摘要
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Potassium ion hybrid capacitors (KICs) have drawn tremendous attention for large-scale energy storage applications because of their high energy and power densities and the abundance of potassium sources. However, achieving KICs with high capacity and long lifespan remains challenging because the large size of potassium ions causes sluggish kinetics and fast structural pulverization of electrodes. Here, we report a composite anode of VO2–V2O5 nanoheterostructures captured by a 3D N-doped carbon network (VO2–V2O5/NC) that exhibits a reversible capacity of 252 mAh g–1 at 1 A g–1 over 1600 cycles and a rate performance with 108 mAh g–1 at 10 A g–1. Quantitative kinetics analyses demonstrate that such great rate capability and cyclability are enabled by the capacitive-dominated potassium storage mechanism in the interfacial engineered VO2–V2O5 nanoheterostructures. The further fabricated full KIC cell consisting of a VO2–V2O5/NC anode and an active carbon cathode delivers a high operating voltage window of 4.0 V and energy and power densities up to 154 Wh kg–1 and 10 000 W kg–1, respectively, surpassing most state-of-the-art KICs. |
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關鍵字
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3D structure, Energy storage, Battery, Capacitor, Potassium-ion |
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語言
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en_US |
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ISSN
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期刊性質
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國外 |
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收錄於
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SCI
SSCI
Scopus
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產學合作
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通訊作者
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Hao Wang, Valeria Nicolosi, Lijun Gao |
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審稿制度
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是 |
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國別
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USA |
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公開徵稿
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出版型式
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,電子版 |