scholarly journals Low-cost and environmentally friendly synthesis of an Al3+ and Mn4+ co-doped Li4Ti5O12 composite with carbon quantum dots as an anode for lithium-ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (38) ◽  
pp. 22101-22105 ◽  
Author(s):  
Hui Nan ◽  
Yiming Zhang ◽  
Haomin Wei ◽  
Huiyuan Chen ◽  
Caihong Xue ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electrical Properties ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Environmentally Friendly ◽  
Lithium Titanate ◽  
Carbon Quantum Dots ◽  
Co Doped

To increase the specific capacity and conductivity of lithium titanate, low-cost and environmentally friendly carbon quantum dots (CQDs) were used to composite with Al3+ and Mn4+ co-doped Li4Ti5O12 (LTO-Al/Mn) to improve its electrical properties.

scholarly journals Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating

2021 ◽  
Vol 10 (1) ◽  
pp. 210-220
Author(s):  
Fangfang Wang ◽  
Ruoyu Hong ◽  
Xuesong Lu ◽  
Huiyong Liu ◽  
Yuan Zhu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Solid Phase ◽  
Low Cost ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Side Reaction ◽  
Chemical Route ◽  
High Nickel

Abstract The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g−1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.

MoO3/CNTs Loading in Separator for Performance-Improving Current-Collector-Free Lithium Ion Batteries

2020 ◽  
Vol 15 (2) ◽  
pp. 204-211
Author(s):  
Peng Peng ◽  
Jiewei Chen ◽  
Kai Niu ◽  
Zhuohai Liu ◽  
Hao Huang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Current Collector ◽  
Charge Transfer Resistance ◽  
Transfer Resistance ◽  
High Specific Capacity ◽  
Composite Separator ◽  
Novel Strategy

A novel strategy for structural design of current-collector-free lithium ion batteries (LIBs) has been proposed, MoO3/CNTs loading on the single side of a separator by a simple spin-coating method. LIBs with such a MoO3-based composite separator eliminate the need for metal current collectors and exhibit an extra high specific capacity (0.2C, ∼1200 mA h g–1). Faster ion transport and lower charge transfer resistance (Rct) of the composite separator were proved compared with the traditional MoO3-based electrode, which results in the increased special capacity. In addition, the pseudocapacitive effect caused by vacancies and narrow interval in the MoO3/CNTs materials also contributes to the high specific capacity of the batteries. The highly efficient ion and electron transport ability of the composite separator were proved in this study, and such a novel design strategy would be an alternative for low-cost LIBs.

Biomass-mediated synthesis of carbon-supported nanostructured metal sulfides for ultra-high performance lithium-ion batteries

2016 ◽  
Vol 4 (7) ◽  
pp. 2738-2745 ◽  
Author(s):  
Y. Lu ◽  
E. Fong
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Low Cost ◽  
Lithium Ion ◽  
Environmentally Friendly ◽  
Metal Sulfides ◽  
Nanostructured Metal ◽  
Supported Metal

3D carbon supported metal sulfides were successfully synthesized through a facile, environmentally friendly and low cost alginate template strategy.

scholarly journals The Development of Si Anode Materials by Nanotechnology for Lithium-ion Battery

2021 ◽  
Vol 308 ◽  
pp. 01007
Author(s):  
Minghao He ◽  
Mingzhao Li ◽  
Zeyu Sun
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Commercial Application ◽  
Electrochemical Characteristics ◽  
Discharge Performance

Nowadays, lithium-ion batteries (LIBs) are applied in many fields for their high energy density, low cost, and long cycle life, highly appreciated in a commercial application. Anode materials, a vital factor contributing to high specific capacity, have caught great attention in next-generation LIBs development. Silicon (Si) has been generally considered one of the best substitutes for the commercial carbon-based anodes of lithium-ion batteries due to its extremely high theoretical capacity, excellent charge-discharge performance, and low cost compared with other anode materials. In this review, various silicon-based materials, including nanostructured silicon and silicon composite materials, are summarized, and both advantages and challenges are analyzed. The article emphasizes the remarkable electrochemical characteristics and significant improvement of battery performance by applying nanostructure and silicon composites conjugates. Besides, the challenges and outlook on the nanostructure design of Si and silicon composites are presented.

scholarly journals Characterization and Preparation of Nano-porous Carbon Derived from Hemp Stems as Anode for Lithium-Ion Batteries

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Zhongxiang Guan ◽  
Zhiping Guan ◽  
Zhigang Li ◽  
Junhui Liu ◽  
Kaifeng Yu
Keyword(s):  
Activated Carbon ◽  
Lithium Ion Batteries ◽  
Porous Carbon ◽  
Low Cost ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Biomass Waste ◽  
Rapid Preparation

Abstract As a biomass waste, hemp stems have the advantages of low cost and abundance, and it is regarded as a promising anode material with a high specific capacity. In this paper, activated carbon derived from hemp stems is prepared by low-temperature carbonization and high-temperature activation. The results of characterizations show the activated carbon has more pores due to the advantages of natural porous structure of hemp stem. The aperture size is mainly microporous, and there are mesopores and macropores in the porous carbon. The porous carbon has an excellent reversible capacity of 495 mAh/g after 100 cycles at 0.2 °C as the anode of lithium-ion battery. Compared with the graphite electrode, the electrochemical property of activated carbon is significantly improved due to the reasonable distribution of pore size. The preparation of the activated carbon provides a new idea for low cost and rapid preparation of anode materials for high capacity lithium-ion batteries.

In situ prepared V2O5/graphene hybrid as a superior cathode material for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35287-35294 ◽  
Author(s):  
Srikanth Mateti ◽  
Md Mokhlesur Rahman ◽  
Lu Hua Li ◽  
Qiran Cai ◽  
Ying Chen
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Industrial Production ◽  
Low Cost ◽  
Lithium Ion ◽  
Environmentally Friendly ◽  
Synthetic Methods

Developing synthetic methods for graphene based cathode materials, with low cost and in an environmentally friendly way, is necessary for industrial production.

Approaching Theoretical Specific Capacity of Iron-Rich Lithium Iron Silicate Using Graphene-incorporation and Fluoride-doing

2022 ◽  
Author(s):  
Tianwei Liu ◽  
Yadong Liu ◽  
Yikang Yu ◽  
Yang Ren ◽  
Chengjun Sun ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Iron Silicate ◽  
Environmental Friendliness ◽  
Theoretical Specific Capacity

The lithium iron silicate, Li2FeSiO4, is a promising cathode material for lithium ion batteries due to its high theoretical specific capacity, earth abundance, low cost, and environmental friendliness. The challenges...

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