High Capacity, Stable Silicon/Carbon Anodes for Lithium-Ion Batteries Prepared Using Emulsion-Templated Directed Assembly

2014 ◽  
Vol 6 (7) ◽  
pp. 4678-4683 ◽  
Author(s):  
Yanjing Chen ◽  
Mengyun Nie ◽  
Brett L. Lucht ◽  
Amitesh Saha ◽  
Pradeep R. Guduru ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Capacity ◽  
Lithium Ion ◽  
Directed Assembly ◽  
Silicon Carbon ◽  
Carbon Anodes

All-Aqueous Directed Assembly Strategy for Forming High-Capacity, Stable Silicon/Carbon Anodes for Lithium-Ion Batteries

2015 ◽  
Vol 7 (38) ◽  
pp. 21391-21397 ◽  
Author(s):  
Yanjing Chen ◽  
Mengqing Xu ◽  
Yuzi Zhang ◽  
Yue Pan ◽  
Brett L. Lucht ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Capacity ◽  
Lithium Ion ◽  
Directed Assembly ◽  
Assembly Strategy ◽  
Silicon Carbon ◽  
Carbon Anodes

scholarly journals Solutions for the problems of silicon–carbon anode materials for lithium-ion batteries

2018 ◽  
Vol 5 (6) ◽  
pp. 172370 ◽  
Author(s):  
Xuyan Liu ◽  
Xinjie Zhu ◽  
Deng Pan
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Carbon Anode ◽  
Environmental Friendliness ◽  
Silicon Carbon ◽  
New Energy ◽  
Carbon Anodes

Lithium-ion batteries are widely used in various industries, such as portable electronic devices, mobile phones, new energy car batteries, etc., and show great potential for more demanding applications like electric vehicles. Among advanced anode materials applied to lithium-ion batteries, silicon–carbon anodes have been explored extensively due to their high capacity, good operation potential, environmental friendliness and high abundance. Silicon–carbon anodes have demonstrated great potential as an anode material for lithium-ion batteries because they have perfectly improved the problems that existed in silicon anodes, such as the particle pulverization, shedding and failures of electrochemical performance during lithiation and delithiation. However, there are still some problems, such as low first discharge efficiency, poor conductivity and poor cycling performance, which need to be improved. This paper mainly presents some methods for solving the existing problems of silicon–carbon anode materials through different perspectives.

scholarly journals Nanostructured Si-C Composites As High-Capacity Anode Material For All-Solid-State Lithium-Ion Batteries

2021 ◽  
Author(s):  
Stephanie Poetke ◽  
Felix Hippauf ◽  
Anne Baasner ◽  
Susanne Dörfler ◽  
Holger Althues ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Silicon Nanoparticles ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Lithium Ion ◽  
Carbon Matrix ◽  
Liquid Electrolyte ◽  
Side Reactions ◽  
Silicon Carbon

<p>Silicon carbon void structures (Si-C) are attractive anode materials for Lithium-ion batteries to cope with the volume changes of silicon during cycling. In this study, Si-C with varying Si contents (28 ‑ 37 %) are evaluated in all-solid-state batteries (ASSBs) for the first time. The carbon matrix enables enhanced performance and lifetime of the Si-C composites compared to bare silicon nanoparticles in half-cells even at high loadings of up to 7.4 mAh cm<sup>-2</sup>. In full cells with nickel-rich NCM (LiNi<sub>0.9</sub>Co<sub>0.05</sub>Mn<sub>0.05</sub>O<sub>2</sub>, 210 mAh g<sup>-1</sup>), kinetic limitations in the anode lead to a lowered voltage plateau compared to NCM half-cells. The solid electrolyte (Li<sub>6</sub>PS<sub>5</sub>Cl, 3 mS cm<sup>-1</sup>) does not penetrate the Si-C void structure resulting in less side reactions and higher initial coulombic efficiency compared to a liquid electrolyte (72.7 % vs. 31.0 %). Investigating the influence of balancing of full cells using 3-electrode ASSB cells revealed a higher delithiation of the cathode as a result of the higher cut-off voltage of the anode at high n/p ratios. During galvanostatic cycling, full cells with either a low or rather high overbalancing of the anode showed the highest capacity retention of up to 87.7 % after 50 cycles. </p>

scholarly journals Towards reducing carbon content in silicon/carbon anodes for lithium ion batteries

Carbon ◽  
2017 ◽  
Vol 112 ◽  
pp. 72-78 ◽  
Author(s):  
Yuzi Zhang ◽  
Yue Pan ◽  
Yanjing Chen ◽  
Brett L. Lucht ◽  
Arijit Bose
Keyword(s):  
Carbon Content ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Silicon Carbon ◽  
Carbon Anodes

scholarly journals Nanostructured Si-C Composites As High-Capacity Anode Material For All-Solid-State Lithium-Ion Batteries

2021 ◽  
Author(s):  
Stephanie Poetke ◽  
Felix Hippauf ◽  
Anne Baasner ◽  
Susanne Dörfler ◽  
Holger Althues ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Silicon Nanoparticles ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Lithium Ion ◽  
Carbon Matrix ◽  
Liquid Electrolyte ◽  
Side Reactions ◽  
Silicon Carbon

<p>Silicon carbon void structures (Si-C) are attractive anode materials for Lithium-ion batteries to cope with the volume changes of silicon during cycling. In this study, Si-C with varying Si contents (28 ‑ 37 %) are evaluated in all-solid-state batteries (ASSBs) for the first time. The carbon matrix enables enhanced performance and lifetime of the Si-C composites compared to bare silicon nanoparticles in half-cells even at high loadings of up to 7.4 mAh cm<sup>-2</sup>. In full cells with nickel-rich NCM (LiNi<sub>0.9</sub>Co<sub>0.05</sub>Mn<sub>0.05</sub>O<sub>2</sub>, 210 mAh g<sup>-1</sup>), kinetic limitations in the anode lead to a lowered voltage plateau compared to NCM half-cells. The solid electrolyte (Li<sub>6</sub>PS<sub>5</sub>Cl, 3 mS cm<sup>-1</sup>) does not penetrate the Si-C void structure resulting in less side reactions and higher initial coulombic efficiency compared to a liquid electrolyte (72.7 % vs. 31.0 %). Investigating the influence of balancing of full cells using 3-electrode ASSB cells revealed a higher delithiation of the cathode as a result of the higher cut-off voltage of the anode at high n/p ratios. During galvanostatic cycling, full cells with either a low or rather high overbalancing of the anode showed the highest capacity retention of up to 87.7 % after 50 cycles. </p>

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