Extremely High Yield Conversion from Low-Cost Sand to High-Capacity Si Electrodes for Li-Ion Batteries

2014 ◽  
Vol 4 (16) ◽  
pp. 1400622 ◽  
Author(s):  
Jung-Keun Yoo ◽  
Jongsoon Kim ◽  
Min-Jae Choi ◽  
Young-Uk Park ◽  
Jihyun Hong ◽  
...  
2008 ◽  
Vol 1127 ◽  
Author(s):  
Huanan Duan ◽  
Xiangping Chen ◽  
Joe Gnanaraj ◽  
Jianyu Liang

ABSTRACTTiO2 is an attractive anode material for Li-ion batteries due to its high capacity, high mechanical stability during Li intercalation/deintercalation process, limited side reactions with the electrolyte, low cost, and environmental friendliness. In this study, titanium hydroxide gel films were prepared in acidic aqueous solutions of TiOSO4, H2O2 and KNO3 by potentiostatic cathodic electrosynthesis on various copper substrates, including planar Cu foil, mechanically polished planar Cu foil, and Cu nanorod arrays grown on Cu foil. Crystalline TiO2 films were obtained by heat treating the electrodeposited titanium hydroxide gel films at 500 oC in argon atmosphere. The morphology and microstructure of the TiO2 films were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). SEM results showed that after deposition, each Cu nanorod has been covered by a layer of TiO2 gel, forming a core-shell structure. The effects of Cu nanorod arrays on the morphology and the electrochemical property of the TiO2 deposits were discussed.


2017 ◽  
Vol 720 ◽  
pp. 529-540 ◽  
Author(s):  
Taketoshi Matsumoto ◽  
Katsuya Kimura ◽  
Hirotomo Nishihara ◽  
Takatoshi Kasukabe ◽  
Takashi Kyotani ◽  
...  

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2962
Author(s):  
Ngoc Hung Vu ◽  
Van-Duong Dao ◽  
Ha Tran Huu ◽  
Won Bin Im

Herein, the spinel-layered cathode material Li1.33MnTiO4+z (0.8LiMnTiO4•0.2Li2Mn0.5Ti0.5O3) is investigated for the purpose of developing a high-capacity, low-cost, and environmentally friendly cathode for Li-ion batteries. Sol-gel synthesis is conducted and the relationships between synthesis temperature, structure, and electrochemical performance of the cathodes are studied. The effects of size and purity on the capacities of these cathodes are discussed. The samples fired at 500 and 600 °C contain an impurity phase of TiO2, thus delivering capacities of 208 and 210 mAh g−1 at C/10, respectively. The sample fired at 700 °C without the impurity phase of TiO2 shows a high capacity of 222 mAh g−1 at C/10 and capacity retention of 90.5% after 100 cycles at 1C.


2021 ◽  
Author(s):  
Nan Zhang ◽  
Chuangchao Sun ◽  
Yiqiang Huang ◽  
Ling Lv ◽  
Zunchun Wu ◽  
...  

Owing to the high capacity and low working potential, Si-based anodes are regarded as alternatives for graphite anodes to meet higher requirements for Li-ion batteries (LIBs). However, the high volume...


2021 ◽  
pp. 2004998
Author(s):  
Huarong Xia ◽  
Yuxin Tang ◽  
Oleksandr I. Malyi ◽  
Zhiqiang Zhu ◽  
Yanyan Zhang ◽  
...  

2021 ◽  
Author(s):  
Xiaojing Zhang ◽  
xinyi Ge ◽  
Zhigang Shen ◽  
Han Ma ◽  
Jingshi Wang ◽  
...  

Compared with environmentally harmful binder polyvinylidene fluoride (PVDF) in Li-ion batteries (LIBs), water-based binders have many advantages, such as low cost, rich sources and environmental friendliness. In this study, various...


2021 ◽  
Vol 415 ◽  
pp. 128509
Author(s):  
Qihang Yu ◽  
Wu Tang ◽  
Yang Hu ◽  
Jian Gao ◽  
Ming Wang ◽  
...  

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