Next Article in Journal
An Improved CMOS Design of Op-Amp Comparator with Gain Boosting Technique for Data Converter Circuits
Next Article in Special Issue
Including Liquid Metal into Porous Elastomeric Films for Flexible and Enzyme-Free Glucose Fuel Cells: A Preliminary Evaluation
Previous Article in Journal
Clock Topologies for Molecular Quantum-Dot Cellular Automata
Open AccessArticle

Waxberry-Like Nanosphere Li4Mn5O12 as High Performance Electrode Materials for Supercapacitors

1
Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
2
CAS Center for Excellence in Nanoscience, Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences, Beijing 100083, China
3
College of Nanoscience and Technology, University of Chinese Academy of Sciences, Bejing 100049, China
*
Authors to whom correspondence should be addressed.
J. Low Power Electron. Appl. 2018, 8(3), 32; https://doi.org/10.3390/jlpea8030032
Received: 13 June 2018 / Revised: 27 August 2018 / Accepted: 4 September 2018 / Published: 11 September 2018
(This article belongs to the Special Issue Flexible Electronics and Self-Powered Systems)
Porous materials have superior electrochemical performance owing to its their structure, which could increase the specific and contact area with the electrode. The spinel Li4Mn5O12 has a three-dimensional tunnel structure for a better diffusion path, which has the advantage of lithium ion insertion and extraction in the framework. However, multi-space spherical materials with single morphologies are rarely studied. In this work, waxberry-like and raspberry-like nanospheres for Li4Mn5O12 have been fabricated by the wet chemistry and solid-state methods for the first time. The diameter of a single waxberry- and raspberry-like nanosphere is about 1 μm and 600 nm, respectively. The specific capacitance of Li4Mn5O12 was 535 mF cm−2 and 147.25 F g−1 at the scan rate of 2 mV s−1, and the energy density was 110.7 Wh kg−1, remaining at 70% after 5000th charge-discharge cycles. Compared with raspberry-like nanosphere Li4Mn5O12, the waxberry-like nanoporous spinel Li4Mn5O12 shows the better electrochemical performance and stability; furthermore, these electrochemical performances have been improved greatly compared to the previous studies. All these results indicate that the waxberry-like nanoporous spinel Li4Mn5O12 could provide a potential application in high performance supercapacitors. View Full-Text
Keywords: supercapacitors; Li4Mn5O12; waxberry-like nanosphere; high performance supercapacitors; Li4Mn5O12; waxberry-like nanosphere; high performance
Show Figures

Figure 1

MDPI and ACS Style

Ji, P.; Xi, Y.; Zhang, C.; Wang, C.; Hu, C.; Guan, Y.; Zhang, D. Waxberry-Like Nanosphere Li4Mn5O12 as High Performance Electrode Materials for Supercapacitors. J. Low Power Electron. Appl. 2018, 8, 32.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop