Strategic synthesis of sponge-like structured SiOx@C@CoO multifunctional composites for high-performance and stable lithium-ion batteries

Author(s):  
Pu Wang ◽  
Zhongti Sun ◽  
Hui Liu ◽  
ZhiWen Gao ◽  
JianGuo Hu ◽  
...  

Abstract: Sub-stoichiometric silicon oxide (SiOx) was regarded as one of the most promising alternatives for lithium-ion batteries because of its high theoretical capacity, low cost, and abundant reserves. However, the...

2006 ◽  
Vol 973 ◽  
Author(s):  
Shijun Wang ◽  
M. Stanley Whittingham

ABSTRACTThis study focusses on optimizing the parameters of the hydrothermal synthesis to produce iron phosphates for lithium ion batteries, with an emphasis on pure LiFePO4 with the olivine structure and compounds containing a higher iron:phosphate ratio. Lithium iron phosphate (LiFePO4) is a promising cathode candidate for lithium ion batteries due to its high theoretical capacity, environmentally benign and the low cost of starting materials. Well crystallized LiFePO4 can be successfully synthesized at temperatures above 150 °C. The addition of a reducing agent, such as hydrazine, is essential to minimize the oxidation of ferrous (Fe2+) to ferric (Fe3+) in the final compound. The morphology of LiFePO4 is highly dependent on the pH of the initial solution. This study also investigated the lipscombite iron phosphates of formula Fe1.33PO4OH. This compound has a log-like structure formed by Fe-O octahedral chains. The chains are partially occupied by the Fe3+ sites, and these iron atoms and some of the vacancies can be substituted by other cations. Most of the protons can be ion-exchanged for lithium, and the electrochemical capacity is much increased.


2020 ◽  
Vol 4 (9) ◽  
pp. 4780-4788 ◽  
Author(s):  
Qiang Ma ◽  
Jiakang Qu ◽  
Xiang Chen ◽  
Zhuqing Zhao ◽  
Yan Zhao ◽  
...  

Low-cost feedstocks and rationally designed structures are the keys to determining the lithium-storage performance and practical applications of Si-based anodes for lithium-ion batteries (LIBs).


2019 ◽  
Vol 11 (50) ◽  
pp. 46800-46807 ◽  
Author(s):  
Yongjie Cai ◽  
Yuanyuan Li ◽  
Biyu Jin ◽  
Abid Ali ◽  
Min Ling ◽  
...  

2019 ◽  
Vol 7 (8) ◽  
pp. 3874-3881 ◽  
Author(s):  
Min Cui ◽  
Lin Wang ◽  
Xianwei Guo ◽  
Errui Wang ◽  
Yubo Yang ◽  
...  

A mass-produced and low-cost hierarchical mesoporous/macroporous silicon-based composite material with an ample porous structure and dual carbon protective layers has been rationally designed and constructed. The Si/SiO2@C composite anode materials for LIBs show enhanced electrochemical properties.


2019 ◽  
Vol 7 (40) ◽  
pp. 23019-23027 ◽  
Author(s):  
Zongfeng Sha ◽  
Shengqiang Qiu ◽  
Qing Zhang ◽  
Zhiyong Huang ◽  
Xun Cui ◽  
...  

A solvothermal polymerization approach to graphene/poly(methyl methacrylate) thermoplastic nanocomposites as low-cost alternative anode materials with superior lithium storage capability.


Author(s):  
Fangkun Li ◽  
Zhengbo Liu ◽  
Jiadong Shen ◽  
Xijun Xu ◽  
Liyan Zeng ◽  
...  

Ni-rich LiNixCoyMn1-x-yO2 (x 0.6) layered oxide cathodes are one of the most promising cathode materials for lithium-ion batteries owing to their superior capacity, prominent energy density and low cost. However,...


2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaodi Liu ◽  
Changzhong Chen ◽  
Yiyang Zhao ◽  
Bin Jia

Most recently, manganese oxides nanomaterials, including MnO and MnO2, have attracted great interest as anode materials in lithium-ion batteries (LIBs) for their high theoretical capacity, environmental benignity, low cost, and special properties. Up to now, manganese oxides nanostructures with excellent properties and various morphologies have been successfully synthesized. Herein, we provide an in-depth discussion of recent development of the synthesis of manganese oxides nanomaterials and their application in the field of LIBs.


2013 ◽  
Vol 5 (16) ◽  
pp. 7671-7675 ◽  
Author(s):  
Jie Shao ◽  
Xinyong Li ◽  
Zhongming Wan ◽  
Longfei Zhang ◽  
Yuanlei Ding ◽  
...  

2021 ◽  
Vol 8 ◽  
Author(s):  
Junfeng Li ◽  
Xianzi Zhou ◽  
Kai Lu ◽  
Chao Ma ◽  
Liang Li ◽  
...  

Molybdenum sulfide (MoS2) has become a potential anode of lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) due to its high theoretical capacity and low cost. However, the volume expansion, poor electrical conductivity and dissolution of polysulfides in the electrolyte during the cycling process severely limited its applications. Herein, few-layered MoS2@N-doped carbon (F-MoS2@NC) was synthesized through a facile solvothermal and annealing process. It was found that the addition of N-doped carbon precursor could significantly promote the formation of few-layered MoS2 and improve the performances of lithium and sodium storage. A high reversible capacity of 482.6 mA h g−1 at a high current density of 2000 mA g−1 could be obtained for LIBs. When used as anode material for SIBs, F-MoS2@NC hybrids could maintain a reversible capacity of 171 mA h g−1 at a high current density of 1,000 mA g−1 after 600 cycles. This work should provide new insights into carbon hybrid anode materials for both LIBs and SIBs.


RSC Advances ◽  
2014 ◽  
Vol 4 (52) ◽  
pp. 27488-27492 ◽  
Author(s):  
Xiayin Yao ◽  
Junhua Kong ◽  
Xiaosheng Tang ◽  
Dan Zhou ◽  
Chenyang Zhao ◽  
...  

Porous CoFe2O4 nanosheets are prepared via a low-cost and scalable process and are shown to be high-performance anode materials for lithium-ion batteries.


Sign in / Sign up

Export Citation Format

Share Document