Carbon-coated silicon nanoparticle-embedded carbon sphere assembly electrodes with enhanced performance for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 38012-38017 ◽  
Author(s):  
Donghee Gueon ◽  
Jaehyun Lee ◽  
Joong Kee Lee ◽  
Jun Hyuk Moon
Keyword(s):  
Lithium Ion Batteries ◽  
Silicon Nanoparticles ◽  
High Capacity ◽  
Lithium Ion ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Capacity Retention ◽  
Silicon Nanoparticle ◽  
Carbon Coated

We demonstrate carbon-coated silicon nanoparticles embedded in monodisperse carbon spheres for lithium-ion batteries with high capacity retention.

Sn–Co nanoparticles encapsulated in grid-shell carbon spheres, applied as a high-performance anode material for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53586-53591 ◽  
Author(s):  
Bo Zhang ◽  
Xiao-Shan Li ◽  
Chun-Ling Liu ◽  
Zong-Huai Liu ◽  
Wen-Sheng Dong
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
Rate Performance ◽  
Carbon Spheres ◽  
Capacity Retention ◽  
Grid Shell ◽  
Co Nanoparticles

The Sn–Co nanoparticles encapsulated in grid-shell carbon spheres showed high capacity, good rate performance and excellent capacity retention.

Encapsulating sulfur into highly graphitized hollow carbon spheres as high performance cathode for lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98035-98041 ◽  
Author(s):  
Shuangke Liu ◽  
Xiaobin Hong ◽  
Yujie Li ◽  
Jing Xu ◽  
Chunman Zheng ◽  
...  
Keyword(s):  
High Performance ◽  
High Capacity ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Capacity Retention ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Encapsulating sulfur into a highly graphitized hollow carbon sphere (GHCS) is proposed as sulfur cathode, the S@GHCS delivers a high discharge capacity of ∼800 mA h g−1at 4C rate and high capacity retention of 93.7% after 240 cycles.

scholarly journals Electrochemical properties of a silicon nanoparticle/hollow graphite fiber/carbon coating composite as an anode for lithium-ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (58) ◽  
pp. 36735-36743 ◽  
Author(s):  
Liyong Wang ◽  
Zhanjun Liu ◽  
Quangui Guo ◽  
Xiaohui Guo ◽  
Jianjun Gu
Keyword(s):  
Lithium Ion Batteries ◽  
Carbon Coating ◽  
Silicon Nanoparticles ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Graphite Fiber ◽  
Lithium Storage ◽  
Silicon Nanoparticle ◽  
Coating Composite ◽  
Graphite Fibers

Hollow graphite fibers and carbon coating were applied to improve lithium storage and cycling performance of silicon nanoparticles.

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>

Polydopamine-wrapped, silicon nanoparticle-impregnated macroporous CNT particles: rational design of high-performance lithium-ion battery anodes

2019 ◽  
Vol 55 (3) ◽  
pp. 361-364 ◽  
Author(s):  
Donghee Gueon ◽  
Jun Hyuk Moon
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
High Performance ◽  
Rational Design ◽  
High Capacity ◽  
Lithium Ion ◽  
Silicon Nanoparticle

We report simple yet rationally designed, polydopamine-wrapped, silicon nanoparticle-impregnated macroporous CNT particles for high-capacity lithium-ion batteries.

The synthesis of a core–shell MnO2/3D-ordered hollow carbon sphere composite and its superior electrochemical capability for lithium ion batteries

2014 ◽  
Vol 2 (18) ◽  
pp. 6343-6347 ◽  
Author(s):  
Zang Jun ◽  
Chen Jia-jia ◽  
Zhang Cheng-long ◽  
Qian Hang ◽  
Zheng Ming-sen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Carbon Matrix ◽  
Core Shell ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Hollow Carbon Sphere ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

A hierarchical core–shell MnO2/3D-ordered hollow carbon sphere composite was designed and synthesized by using hollow carbon spheres (HCS) as a carbon matrix.

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