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Title: High-Performance Flexible All-Solid-State Asymmetric Supercapacitors Based on Vertically Aligned CuSe@Co(OH)2 Nanosheet Arrays

Journal Article · · Journal of Physical Chemistry. C
ORCiD logo [1];  [2];  [2];  [3];  [3];  [4]
  1. Hohai University, Nanjing (China). College of Science
  2. Hohai University, Nanjing (China). College of Science
  3. Nanjing Univ. (China). Nanjing National Laboratory of Solid State Microstructures
  4. Ames Lab., Ames, IA (United States)
+ Show Author Affiliations

The developments of electrode active materials provide the opportunities for next-generation energy storage devices. The arrangement of electrode materials on the substrate has recently emerged as a promising strategy for preparing high-performance supercapacitors. In this paper, we demonstrate a novel vertically aligned CuSe@Co(OH)2 nanosheet arrays electrode for supercapacitor application. The materials are thoroughly characterized by structural and spectroscopic techniques. Electrochemical performance of CuSe@Co(OH)2 nanosheet arrays are investigated in detail, which exhibit a specific capacitance as much as 1180 F g-1 at a current density of 1 A g-1. A flexible asymmetric all-solid-state supercapacitor is fabricated using CuSe@Co(OH)2 nanosheet arrays as the positive electrode and activated carbon as the negative electrode. The device delivers a volumetric capacitance of 441.4 mF cm-3 with maximum energy density and maximum power density is 0.17 and 62.1 mW cm-3, as well as robust cycling stability (~80.4% capacitance retention after 10 000 cycles), excellent flexibility, and mechanical stability. Finally, the excellent electrochemical performance can be attributed to its unique vertically aligned configuration.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358; 2015B22314; 2016B46014
OSTI ID:
1427731
Report Number(s):
IS-J-9603; TRN: US1802736
Journal Information:
Journal of Physical Chemistry. C, Vol. 122, Issue 4; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (7)

3D Patternable Supercapacitors from Hierarchically Architected Porous Fiber Composites for Wearable and Waterproof Energy Storage journal May 2019
A Geologic Architecture System-Inspired Micro-/Nano-Heterostructure Design for High-Performance Energy Storage journal October 2018
Self-stacked multilayer FeOCl supported on a cellulose-derived carbon aerogel: a new and high-performance anode material for supercapacitors journal January 2019
Enhancement of the performance of the Cu 2 Se band filters via Yb nanosandwiching journal February 2019
Solid‐State Hybrid Supercapacitor Assembled from a Heterostructured Co−Ni Battery‐like Cathode and Supercapacitor‐Type Highly Disordered Carbon Nanosheets journal January 2020
Bimetallic vanadium cobalt diselenide nanosheets with additional active sites for excellent asymmetric pseudocapacitive performance: comparing the electrochemical performances with M–CoSe 2 (M = Zn, Mn, and Cu) journal January 2019
One-pot synthesis of graphene- cobalt hydroxide composite nanosheets (Co/G NSs) for electrocatalytic water oxidation journal September 2018

Figures / Tables (7)

Fig. 1.(p. 8)figure Fig. 1.
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Fig. 5.(p. 17)figure Fig. 5.
Fig. 6.(p. 19)figure Fig. 6.
Fig. 7.(p. 21)figure Fig. 7.

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Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
CuSe@Co(OH)2
vertically-aligned
nanosheet arrays
all-solid-state
asymmetric supercapacitor