scholarly journals Mechanisms and Product Options of Magnesiothermic Reduction of Silica to Silicon for Lithium-Ion Battery Applications

2021 ◽  
Vol 9 ◽  
Author(s):  
Yu Tan ◽  
Tingting Jiang ◽  
George Z. Chen
Keyword(s):  
Electrode Materials ◽  
Specific Capacity ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
Potential Range ◽  
Magnesiothermic Reduction ◽  
Power Sources ◽  
Long Cycle Life

Lithium-ion batteries (LIBs) have been one of the most predominant rechargeable power sources due to their high energy/power density and long cycle life. As one of the most promising candidates for the new generation negative electrode materials in LIBs, silicon has the advantages of high specific capacity, a lithiation potential range close to that of lithium deposition, and rich abundance in the earth’s crust. However, the commercial use of silicon in LIBs is still limited by the short cycle life and poor rate performance due to the severe volume change during Li++ insertion/extraction, as well as the unsatisfactory conduction of electron and Li+ through silicon matrix. Therefore, many efforts have been made to control and stabilize the structures of silicon. Magnesiothermic reduction has been extensively demonstrated as a promising process for making porous silicon with micro- or nanosized structures for better electrochemical performance in LIBs. This article provides a brief but critical overview of magnesiothermic reduction under various conditions in several aspects, including the thermodynamics and mechanism of the reaction, the influences of the precursor and reaction conditions on the dynamics of the reduction, and the interface control and its effect on the morphology as well as the final performance of the silicon. These outcomes will bring about a clearer vision and better understanding on the production of silicon by magnesiothermic reduction for LIBs application.

Recent progress in advanced electrode materials, separators and electrolytes for lithium batteries

2018 ◽  
Vol 6 (42) ◽  
pp. 20564-20620 ◽  
Author(s):  
Hailin Zhang ◽  
Hongbin Zhao ◽  
Muhammad Arif Khan ◽  
Wenwen Zou ◽  
Jiaqiang Xu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Power Density ◽  
Lithium Batteries ◽  
Recent Progress ◽  
Electrode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
Long Cycle Life ◽  
Negative Electrodes

This article comprehensively reviews the recent progress in the development of key components of lithium-ion batteries, including positive/negative electrodes, electrolytes and separators. The necessity of developing batteries with high energy/power density and long cycle-life is emphasized both in terms of industrial and academic perspectives.

scholarly journals Novel Lithium-Ion Capacitor Based on a NiO-rGO Composite

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3586
Author(s):  
Qi An ◽  
Xingru Zhao ◽  
Shuangfu Suo ◽  
Yuzhu Bai
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Lithium Ion Capacitor

Lithium-ion capacitors (LICs) have been widely explored for energy storage. Nevertheless, achieving good energy density, satisfactory power density, and stable cycle life is still challenging. For this study, we fabricated a novel LIC with a NiO-rGO composite as a negative material and commercial activated carbon (AC) as a positive material for energy storage. The NiO-rGO//AC system utilizes NiO nanoparticles uniformly distributed in rGO to achieve a high specific capacity (with a current density of 0.5 A g−1 and a charge capacity of 945.8 mA h g−1) and uses AC to provide a large specific surface area and adjustable pore structure, thereby achieving excellent electrochemical performance. In detail, the NiO-rGO//AC system (with a mass ratio of 1:3) can achieve a high energy density (98.15 W h kg−1), a high power density (10.94 kW kg−1), and a long cycle life (with 72.1% capacity retention after 10,000 cycles). This study outlines a new option for the manufacture of LIC devices that feature both high energy and high power densities.

scholarly journals A mechanistic study of mesoporous TiO2 nanoparticle negative electrode materials with varying crystallinity for lithium ion batteries

2020 ◽  
Vol 8 (6) ◽  
pp. 3333-3343 ◽  
Author(s):  
Changjian Deng ◽  
Miu Lun Lau ◽  
Chunrong Ma ◽  
Paige Skinner ◽  
Yuzi Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Power Density ◽  
Electrode Materials ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
Mesoporous Tio2 ◽  
Mechanistic Study ◽  
Negative Electrodes ◽  
Negative Electrode Materials

Nanoscale oxide-based negative electrodes are of great interest for lithium ion batteries due to their high energy/power density, and enhanced safety. The crystallinity effect of mesoporous TiO2 nanoparticle electrode was investigated in this work.

scholarly journals Current Li-Ion Battery Technologies in Electric Vehicles and Opportunities for Advancements

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1074 ◽  
Author(s):  
Yu Miao ◽  
Patrick Hynan ◽  
Annette von Jouanne ◽  
Alexandre Yokochi
Keyword(s):  
Electric Vehicles ◽  
Electrode Materials ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Li Ion ◽  
On The Road

Over the past several decades, the number of electric vehicles (EVs) has continued to increase. Projections estimate that worldwide, more than 125 million EVs will be on the road by 2030. At the heart of these advanced vehicles is the lithium-ion (Li-ion) battery which provides the required energy storage. This paper presents and compares key components of Li-ion batteries and describes associated battery management systems, as well as approaches to improve the overall battery efficiency, capacity, and lifespan. Material and thermal characteristics are identified as critical to battery performance. The positive and negative electrode materials, electrolytes and the physical implementation of Li-ion batteries are discussed. In addition, current research on novel high energy density batteries is presented, as well as opportunities to repurpose and recycle the batteries.

scholarly journals Tin Oxide Encapsulated into Pyrolyzed Chitosan as a Negative Electrode for Lithium Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1156
Author(s):  
Andrzej P. Nowak ◽  
Maria Gazda ◽  
Marcin Łapiński ◽  
Zuzanna Zarach ◽  
Konrad Trzciński ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Tin Oxide ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Hydroxyl Groups ◽  
Potential Candidate ◽  
Surface Hydroxyl ◽  
Diffusion Controlled

Tin oxide is one of the most promising electrode materials as a negative electrode for lithium-ion batteries due to its higher theoretical specific capacity than graphite. However, it suffers lack of stability due to volume changes and low electrical conductivity while cycling. To overcome these issues, a new composite consisting of SnO2 and carbonaceous matrix was fabricated. Naturally abundant and renewable chitosan was chosen as a carbon source. The electrode material exhibiting 467 mAh g−1 at the current density of 18 mA g−1 and a capacity fade of only 2% after 70 cycles is a potential candidate for graphite replacement. Such good electrochemical performance is due to strong interaction between amine groups from chitosan and surface hydroxyl groups of SnO2 at the preparation stage. However, the charge storage is mainly contributed by a diffusion-controlled process showing that the best results might be obtained for low current rates.

scholarly journals Niobium Tungsten Oxide in a Green Water-in-Salt Electrolyte Enables Ultra-Stable Aqueous Lithium-Ion Capacitors

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Shengyang Dong ◽  
Yi Wang ◽  
Chenglong Chen ◽  
Laifa Shen ◽  
Xiaogang Zhang
Keyword(s):  
Tungsten Oxide ◽  
Electrode Materials ◽  
Low Cost ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Green Water ◽  
Lithium Acetate ◽  
Hybrid Supercapacitors

AbstractAqueous hybrid supercapacitors are attracting increasing attention due to their potential low cost, high safety and eco-friendliness. However, the narrow operating potential window of aqueous electrolyte and the lack of suitable negative electrode materials seriously hinder its future applications. Here, we explore high concentrated lithium acetate with high ionic conductivity of 65.5 mS cm−1 as a green “water-in-salt” electrolyte, providing wide voltage window up to 2.8 V. It facilitates the reversible function of niobium tungsten oxide, Nb18W16O93, that otherwise only operations in organic electrolytes previously. The Nb18W16O93 with lithium-ion intercalation pseudocapacitive behavior exhibits excellent rate performance, high areal capacity, and ultra-long cycling stability. An aqueous lithium-ion hybrid capacitor is developed by using Nb18W16O93 as negative electrode combined with graphene as positive electrode in lithium acetate-based “water-in-salt” electrolyte, delivering a high energy density of 41.9 W kg−1, high power density of 20,000 W kg−1 and unexceptionable stability of 50,000 cycles.

scholarly journals High Energy, Long Cycle Life Lithium-ion Batteries for PHEV Application

2017 ◽  
Author(s):  
Donghai Wang ◽  
◽  
Arumugam Manthiram ◽  
Chao-Yang Wang ◽  
Gao Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
Long Cycle ◽  
Long Cycle Life

Binder-free layered Ti3C2/CNTs nanocomposite anodes with enhanced capacity and long-cycle life for lithium-ion batteries

2015 ◽  
Vol 44 (16) ◽  
pp. 7123-7126 ◽  
Author(s):  
Yu Liu ◽  
Wei Wang ◽  
Yulong Ying ◽  
Yewu Wang ◽  
Xinsheng Peng
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycle Life ◽  
High Specific Capacity ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Binder Free ◽  
Battery Anode

A novel binder-free layered Ti3C2/CNTs nanocomposite lithium-ion battery anode exhibits a high specific capacity and a long cycle life.

A method of increasing the energy density of layered Ni-rich Li[Ni1−2xCoxMnx]O2 cathodes (x = 0.05, 0.1, 0.2)

2019 ◽  
Vol 7 (6) ◽  
pp. 2694-2701 ◽  
Author(s):  
Jae-Hyung Kim ◽  
Kang-Joon Park ◽  
Suk Jun Kim ◽  
Chong S. Yoon ◽  
Yang-Kook Sun
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
Transportation Systems ◽  
Cycle Life ◽  
High Energy Density ◽  
Automobile Market ◽  
Long Cycle ◽  
Long Cycle Life

Lithium-ion batteries with high energy density, long cycle life, and appropriate safety levels are necessary to facilitate the penetration of electrified transportation systems into the automobile market.

Rice husk-derived hybrid lithium-ion capacitors with ultra-high energy

2017 ◽  
Vol 5 (46) ◽  
pp. 24502-24507 ◽  
Author(s):  
Bo Li ◽  
Zhujun Xiao ◽  
Ming Chen ◽  
Ziyue Huang ◽  
Xiaoyong Tie ◽  
...  
Keyword(s):  
Rice Husk ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
Ultra High Energy ◽  
Rice Husks ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Power Densities

Inspired by nature, hybrid lithium-ion capacitors with both electrodes derived from rice husks are properly designed and constructed with long cycle life and ultra-high energy and power densities.

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