Indirect Transformation of Coordination-Polymer Particles into Magnetic Carbon-Coated Mn3O4(Mn3O4@C) Nanowires for Supercapacitor Electrodes with Good Cycling Performance

2013 ◽  
Vol 19 (22) ◽  
pp. 7084-7089 ◽  
Author(s):  
Kuaibing Wang ◽  
Xiaoyan Ma ◽  
Zhiyang Zhang ◽  
Mingbo Zheng ◽  
Zhirong Geng ◽  
...  
2017 ◽  
Vol 53 (62) ◽  
pp. 8703-8706 ◽  
Author(s):  
Wenwei Sun ◽  
Jiehua Liu ◽  
Xiaoqian Liu ◽  
Xiaojing Fan ◽  
Kuan Zhou ◽  
...  

Carbon-coated hierarchical LiTi2(PO4)3 was synthesized by a facile bimolecular (glucose and DMEA) assisted hydrothermal reaction and a solid-state reaction, and exhibits excellent high-rate and cycling performance.


MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3501-3506 ◽  
Author(s):  
Gaind P. Pandey ◽  
Joshua Adkins ◽  
Lamartine Meda

ABSTRACTLithium sulfide (Li2S) is one of the most attractive cathode materials for high energy density lithium batteries as it has a high theoretical capacity of 1166 mA h g-1. However, Li2S suffers from poor rate performance and short cycle life due to its insulating nature and polysulfide shuttle during cycling. In this work, we report a facile and viable approach to address these issues. We propose a method to synthesize a Li2S based nanocomposite cathode material by dissolving Li2S as the active material, polyvinylpyrrolidone (PVP) as the carbon precursor, and graphene oxide (GO) as a matrix to enhance the conductivity, followed by a co-precipitation and high-temperature carbonization process. The Li2S/rGO cathode yields an exceptionally high initial capacity of 817 mAh g-1 based on Li2S mass at C/20 rate and also shows a good cycling performance. The carbon-coated Li2S/rGO cathode demonstrates the capability of robust core-shell nanostructures for different rates and improved capacity retention, revealing carbon coated Li2S/rGO composites as an outstanding system for high-performance lithium-sulfur batteries.


CrystEngComm ◽  
2019 ◽  
Vol 21 (18) ◽  
pp. 2849-2853 ◽  
Author(s):  
Junhyung Lee

It is experimentally demonstrated that the coated SiO2 shell has an influence on the kinetics of the polymorphous transition of iron(iii) oxides with manganese ions derived from coordination polymer particles, generating a meta-stable bixbyite crystal phase structure.


2015 ◽  
Vol 51 (53) ◽  
pp. 10636-10639 ◽  
Author(s):  
Xiao Guang Hu ◽  
XiaoLiang Li ◽  
Sung Ik Yang

A novel infinite coordination polymer (DAE-ICP) based on zinc nitrate and a diarylethene photoswitch, with reversible photochromic properties in solution and the solid state upon applying photostimuli, was synthesized and characterized by FT-IR, EDX, FE-SEM and FE-TEM.


2014 ◽  
pp. 113-138 ◽  
Author(s):  
Fernando Novio ◽  
Daniel Ruiz-Molina ◽  
Julia Lorenzo

2019 ◽  
Vol 7 (37) ◽  
pp. 21404-21409 ◽  
Author(s):  
Jiawei Tian ◽  
Jia Li ◽  
Yongxing Zhang ◽  
Xin-Yao Yu ◽  
Zhanglian Hong

Dual-carbon confined CoSe2 microcubes are synthesized and demonstrate enhanced rate and cycling performance for sodium storage.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Seong-Hyeon Hong ◽  
Yeong-Mi Jin ◽  
Kyung Tae Kim ◽  
Cheol-Woo Ahn ◽  
Dong-Su Park ◽  
...  

Nanosized Co powders were prepared by a chemical reduction method with and without CTAB (cetyltrimethylammonium bromide,C19H42BrN) and carbon-coating heat treatment at 700°C for 1 h, and the electrochemical properties of the prepared nanosized Co powders were examined to evaluate their suitability as an anode material of Li-ion batteries. Nanosized amorphous Co-based powders could be synthesized by a chemical reduction method in which a reducing agent is added to a Co ion-dissolved aqueous solution. When the prepared nanosized Co-based powders were subjected to carbon-coating heat treatment at 700°C for 1 h, the amorphous phase was crystallized, and a Co single phase could be obtained. The Co-based powder prepared by chemical reduction with CTAB and carbon-coating heat treatment had a smaller first discharge capacity (about 557 mAh/g) than the Co-based powder prepared by chemical reduction without CTAB and carbon-coating heat treatment (about 628 mAh/g). However, the former had a better cycling performance than the latter from the third cycle. The carbon-coated layers are believed to have led to quite good cycling performances of the prepared Co-based powders from the third cycle.


2015 ◽  
Vol 276 ◽  
pp. 162-169 ◽  
Author(s):  
Zhaobin Feng ◽  
Zhanhong Yang ◽  
Jianhang Huang ◽  
Xiaoe Xie ◽  
Zheng Zhang

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