Silicon/copper dome-patterned electrodes for high-performance hybrid supercapacitors.
Silicon/copper dome-patterned electrodes for high-performance hybrid supercapacitors.
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DOI：
10.1038/srep03183
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发表时间：
2013-12-02
影响因子：
4.6
通讯作者：
Lee JK
中科院分区：
文献类型：
--
作者：
Liu X;Jung HG;Kim SO;Choi HS;Lee S;Moon JH;Lee JK
This study proposes a method for manufacturing high-performance electrode materials in which controlling the shape of the current collector and electrode material for a Li-ion capacitor (LIC). In particular, the proposed LIC manufacturing method maintains the high voltage of a cell by using a microdome-patterned electrode material, allowing for reversible reactions between the Li-ion and the active material for an extended period of time. As a result, the LICs exhibit initial capacities of approximately 42 F g−1, even at 60 A g−1. The LICs also exhibit good cycle performance up to approximately 15,000 cycles. In addition, these advancements allow for a considerably higher energy density than other existing capacitor systems. The energy density of the proposed LICs is approximately nine, two, and 1.5 times higher than those of the electrochemical double layer capacitor (EDLC), AC/LiMn2O4 hybrid capacitor, and intrinsic Si/AC LIC, respectively.
