Self-assembled and well separated B and N co-doped hierarchical carbon structures as high-capacity, ultra-stable, LIB anode materials

2019 ◽  
Vol 3 (2) ◽  
pp. 478-487 ◽  
Author(s):  
Jinliang Zhu ◽  
Pengcheng Wei ◽  
Julian Key ◽  
Shibin Yin ◽  
Shaojian Ma ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Anode Materials ◽  
High Capacity ◽  
Graphene Sheets ◽  
Stable Cycle ◽  
Hierarchical Networks ◽  
Carbon Structures ◽  
Self Assembled ◽  
Hierarchical Carbon ◽  
Co Doped

Self-assembled porous hierarchical networks of boron and nitrogen co-doped carbon nanofibers (BN-CNN) or graphene sheets (BN-GSN) exhibit high reversible capacities and ultra-stable cycle performances as LIB anode materials.

scholarly journals Sandwiching Sulfur into the Dents Between N, O Co-Doped Graphene Layered Blocks with Strong Physicochemical Confinements for Stable and High-Rate Li–S Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Mengjiao Shi ◽  
Su Zhang ◽  
Yuting Jiang ◽  
Zimu Jiang ◽  
Longhai Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
High Capacity ◽  
High Rate ◽  
Graphene Sheets ◽  
Rate Performance ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Sulfur Host ◽  
Co Doped

AbstractThe development of lithium–sulfur batteries (LSBs) is restricted by their poor cycle stability and rate performance due to the low conductivity of sulfur and severe shuttle effect. Herein, an N, O co-doped graphene layered block (NOGB) with many dents on the graphene sheets is designed as effective sulfur host for high-performance LSBs. The sulfur platelets are physically confined into the dents and closely contacted with the graphene scaffold, ensuring structural stability and high conductivity. The highly doped N and O atoms can prevent the shuttle effect of sulfur species by strong chemical adsorption. Moreover, the micropores on the graphene sheets enable fast Li+ transport through the blocks. As a result, the obtained NOGB/S composite with 76 wt% sulfur content shows a high capacity of 1413 mAh g−1 at 0.1 C, good rate performance of 433 mAh g−1 at 10 C, and remarkable stability with 526 mAh g−1 at after 1000 cycles at 1 C (average decay rate: 0.038% per cycle). Our design provides a comprehensive route for simultaneously improving the conductivity, ion transport kinetics, and preventing the shuttle effect in LSBs.

Synthesis of Metal Oxide/Carbon Nanofibers via Biostructure Confinement as High-Capacity Anode Materials

2020 ◽  
Author(s):  
Dingcheng Cen ◽  
Yicheng Ding ◽  
Run Wei ◽  
Xi Huang ◽  
Guohua Gao ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Carbon Nanofibers ◽  
Anode Materials ◽  
High Capacity

Fabrication of Graphene Sheets Intercalated with Manganese Oxide/Carbon Nanofibers: Toward High-Capacity Energy Storage

Small ◽  
2012 ◽  
Vol 9 (2) ◽  
pp. 248-254 ◽  
Author(s):  
Oh Seok Kwon ◽  
Taejoon Kim ◽  
Jun Seop Lee ◽  
Seon Joo Park ◽  
Hyun-Woo Park ◽  
...  
Keyword(s):  
Energy Storage ◽  
Manganese Oxide ◽  
Carbon Nanofibers ◽  
High Capacity ◽  
Graphene Sheets

Tiny Li4Ti5O12 nanoparticles embedded in carbon nanofibers as high-capacity and long-life anode materials for both Li-ion and Na-ion batteries

2013 ◽  
Vol 15 (48) ◽  
pp. 20813 ◽  
Author(s):  
Jun Liu ◽  
Kun Tang ◽  
Kepeng Song ◽  
Peter A. van Aken ◽  
Yan Yu ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Anode Materials ◽  
High Capacity ◽  
Li Ion ◽  
Long Life
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