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Silicon/copper dome-patterned electrodes for high-performance hybrid supercapacitors.

ABSTRACT: 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.

SUBMITTER: Liu X

PROVIDER: S-EPMC3844964 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature

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Silicon/copper dome-patterned electrodes for high-performance hybrid supercapacitors.

Liu Xuyan X Jung Hun-Gi HG Kim Sang-Ok SO Choi Ho-Suk HS Lee Sangwha S Moon Jun Hyuk JH Lee Joong Kee JK

Scientific reports 20131202

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 appro ...[more]

PMID: 24292725

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