Silicon/graphite composite anode with constrained swelling and stable solid electrolyte interphase enabled by spent graphite

2021 ◽  
Author(s):  
Qi Xu ◽  
Qianwen Wang ◽  
Dequan Chen ◽  
Yanjun Zhong ◽  
Zhen Guo Wu ◽  
...  
Keyword(s):  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
High Capacity ◽  
Lithium Ion ◽  
Environmental Hazards ◽  
Composite Anode ◽  
Resource Value ◽  
Graphite Composite

Motivated by attributes including environmental hazards and resource value, the recycling of spent graphite has aroused increasing attention. Meanwhile, silicon/graphite composite has been considered as promising high-capacity anode for lithium-ion...

scholarly journals Synthesis of composite Li4Ti5O12 nanorods/Sn-AC as anode material for lithium-ion battery

2018 ◽  
Vol 67 ◽  
pp. 03004
Author(s):  
Anne Zulfia ◽  
Aisha Betalia ◽  
Bambang Priyono ◽  
Achmad Subhan
Keyword(s):  
Activated Carbon ◽  
Solid Electrolyte ◽  
Lithium Ion Battery ◽  
Anode Material ◽  
Active Carbon ◽  
Solid Electrolyte Interphase ◽  
High Capacity ◽  
Lithium Ion ◽  
Lithium Titanate

LTO or Li4Ti5O12 (lithium titanate) is a compound that is used as an anode component in a lithium-ion battery. LTO anode is used because it has zero-strain properties and doesn't produce SEI (solid electrolyte interphase) which cause low battery performance. However, LTO also has a problem, which is its low capacity. To overcome this problem, the LTO needs to be combined with other materials that have high capacity, which, in this case, are active carbon (AC) and Sn. Making the LTO to be nano-sized can also improve the performance of the battery, thus we tried to synthesize LTO in nanorods form. LTO nanorods are synthesized by hydrothermal in NaOH 4 M solution. The LTO nanorods are mixed with various Sn (5wt%, 10wt%, and 15wt%) and 5wt% activated carbon. LTO nanorods/Sn-AC composite was characterized using XRD, SEM-EDS, and BET and the battery performance was analyzed by EIS, CV, and CD. The results showed that the highest capacity was obtained at LTO nanorods-AC/15wt% Sn with 127.24 mAh/g. This result shows that LTO nanorods-AC/15wt% Sn could be used as an alternative for anode component.

Ball-Milled Graphite-Tin Composite Anode Materials for Lithium-Ion Battery

2012 ◽  
Vol 736 ◽  
pp. 127-132
Author(s):  
Kuldeep Rana ◽  
Anjan Sil ◽  
Subrata Ray
Keyword(s):  
Lithium Ion Battery ◽  
Anode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Composite Anode ◽  
X Ray Diffraction ◽  
Promising Alternative ◽  
X Ray ◽  
Initial Discharge ◽  
Lithium Ion Cell

Lithium alloying compounds as an anode materials have been a focused for high capacity lithium ion battery due to their highenergy capacity and safety characteristics. Here we report on the preparation of graphite-tin composite by using ball-milling in liquid media. The composite material has been characterized by scanning electron microscope, energy depressive X-ray spectroscopy, X-ray diffraction and Raman spectra. The lithium-ion cell made from graphite-tin composite presented initial discharge capacity of 1065 mAh/g and charge capacity 538 mAh/g, which becomes 528 mAh/g in the second cycle. The composite of graphite-tin with higher capacity compared to pristine graphite is a promising alternative anode material for lithium-ion battery.

TG-MS analysis of solid electrolyte interphase (SEI) on graphite negative-electrode in lithium-ion batteries

2006 ◽  
Vol 161 (2) ◽  
pp. 1275-1280 ◽  
Author(s):  
Liwei Zhao ◽  
Izumi Watanabe ◽  
Takayuki Doi ◽  
Shigeto Okada ◽  
Jun-ichi Yamaki
Keyword(s):  
Solid Electrolyte ◽  
Lithium Ion Batteries ◽  
Solid Electrolyte Interphase ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Ms Analysis
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