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Title: A high-performance lithium-ion capacitor based on 2D nanosheet materials
Authors: Li, Shaohui
Chen, Jingwei
Cui, Mengqi
Cai, Guofa
Wang, Jiangxin
Cui, Peng
Gong, Xuefei
Lee, Pooi See
Keywords: Engineering::Materials
Issue Date: 2017
Source: Li, S., Chen, J., Cui, M., Cai, G., Wang, J., Cui, P., Gong, X. & Lee, P. S. (2017). A high-performance lithium-ion capacitor based on 2D nanosheet materials. Small, 13(6), 1602893-.
Project: NRF-CRP-13-2014-02
Journal: Small
Abstract: Lithium-ion capacitors (LICs) are promising electrical energy storage systems for mid-to-large-scale applications due to the high energy and large power output without sacrificing long cycle stability. However, due to the different energy storage mechanisms between anode and cathode, the energy densities of LICs often degrade noticeably at high power density, because of the sluggish kinetics limitation at the battery-type anode side. Herein, a high-performance LIC by well-defined ZnMn2 O4 -graphene hybrid nanosheets anode and N-doped carbon nanosheets cathode is presented. The 2D nanomaterials offer high specific surface areas in favor of a fast ion transport and storage with shortened ion diffusion length, enabling fast charge and discharge. The fabricated LIC delivers a high specific energy of 202.8 Wh kg-1 at specific power of 180 W kg-1 , and the specific energy remains 98 Wh kg-1 even when the specific power achieves as high as 21 kW kg-1 .
ISSN: 1613-6810
DOI: 10.1002/smll.201602893
Rights: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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