scholarly journals Poly(vinylalcohol) (PVA) Assisted Sol-Gel Fabrication of Porous Carbon Network-Na3V2(PO4)3 (NVP) Composites Cathode for Enhanced Kinetics in Sodium Ion Batteries

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 149
Author(s):  
Junghoon Yang ◽  
Duyoung Choi ◽  
Kwang-Seok Kim ◽  
Dae Up Kim ◽  
Jungpil Kim
Keyword(s):  
Porous Carbon ◽  
Sol Gel ◽  
Sodium Ion ◽  
Kinetic Properties ◽  
Electrochemical Performances ◽  
Sodium Ion Batteries ◽  
Ion Diffusion ◽  
Specific Discharge ◽  
Direct Use ◽  
Carbon Network

Na3V2(PO4)3 is regarded as one of the promising cathode materials for next-generation sodium ion batteries, but its undesirable electrochemical performances due to inherently low electrical conductivity have limited its direct use for applications. Motivated by the limit, this study employed a porous carbon network to obtain a porous carbon network–Na3V2(PO4)3 composite by using poly(vinylalcohol) assised sol-gel method. Compared with the typical carbon-coating approach, the formation of a porous carbon network ensured short ion diffusion distances, percolating electrolytes by distributing nanosized Na3V2(PO4)3 particles in the porous carbon network and suppressing the particle aggregation. As a result, the porous carbon network–Na3V2(PO4)3 composite exhibited improved electrochemical performances, i.e., a higher specific discharge capacity (~110 mAh g−1 at 0.1 C), outstanding kinetic properties (~68 mAh g−1 at 50 C), and stable cyclic stability (capacity retention of 99% over 100 cycles at 1 C).

Li(Na)2FeSiO4/C hybrid nanotubes: promising anode materials for lithium/sodium ion batteries

2020 ◽  
Vol 7 (22) ◽  
pp. 4438-4444
Author(s):  
Yakun Tang ◽  
Yang Gao ◽  
Lang Liu ◽  
Yue Zhang ◽  
Jing Xie ◽  
...  
Keyword(s):  
Anode Materials ◽  
Sol Gel ◽  
Sodium Ion ◽  
Electrochemical Performances ◽  
Sodium Ion Batteries ◽  
Calcination Process ◽  
Subsequent Calcination

Porous Li(Na)2FeSiO4/C hybrid nanotubes were successfully synthesized by a modified sol–gel strategy and a subsequent calcination process. These nanohybrids exhibited excellent electrochemical performances as anodes for lithium/sodium ion batteries.

Synchronously improved graphitization and surface area in a 3D porous carbon network as a high capacity anode material for lithium/sodium-ion batteries

2021 ◽  
Author(s):  
Haimi Liu ◽  
Weihao Zeng ◽  
Yue Yang ◽  
Junxin Chen ◽  
Yuwei Zhao ◽  
...  
Keyword(s):  
Surface Area ◽  
Anode Material ◽  
Porous Carbon ◽  
Pore Formation ◽  
High Capacity ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Carbonaceous Materials ◽  
Templating Agent ◽  
Carbon Network

Using bifunctional silica as a catalyst for graphitization and a templating agent for pore-formation, high graphitization and surface area are synchronously realized in porous N/P doped carbonaceous materials.

Green and facile fabrication of hierarchical N-doped porous carbon from water hyacinths for high performance lithium/sodium ion batteries

2018 ◽  
Vol 2 (4) ◽  
pp. 855-861 ◽  
Author(s):  
Guang Zeng ◽  
Baolong Zhou ◽  
Luocai Yi ◽  
Hao Li ◽  
Xiang Hu ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Low Cost ◽  
Sodium Ion ◽  
Electrochemical Performances ◽  
Activation Process ◽  
Sodium Ion Batteries ◽  
Hierarchical Porous ◽  
Facile Fabrication ◽  
Water Hyacinths

Hierarchical porous carbon from water hyacinths has been prepared by a low-cost, facile and readily scalable approach based on a self-activation process and shows excellent electrochemical performances as the anode of lithium/sodium ion batteries.

Exploration of VPO4 as a new anode material for sodium-ion batteries

2017 ◽  
Vol 53 (94) ◽  
pp. 12696-12699 ◽  
Author(s):  
Xinghui Liang ◽  
Xing Ou ◽  
Hong Dai ◽  
Fenghua Zheng ◽  
Qichang Pan ◽  
...  
Keyword(s):  
Anode Material ◽  
Porous Carbon ◽  
Sol Gel ◽  
Carbon Matrix ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Carbon Coated

Carbon-coated VPO4 nanoparticles embedded into a porous carbon matrix were synthesized via a facile sol–gel approach and investigated as a novel polyanion anode material for sodium-ion batteries.

N/S Co-Doped 3 D Porous Carbon Nanosheet Networks Enhancing Anode Performance of Sodium-Ion Batteries

2017 ◽  
Vol 23 (57) ◽  
pp. 14261-14266 ◽  
Author(s):  
Lei Zou ◽  
Yanqing Lai ◽  
Hongxing Hu ◽  
Mengran Wang ◽  
Kai Zhang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Co Doped

SnO2 Nanosheets Anchored on a 3D, Bicontinuous Electron and Ion Transport Carbon Network for High-Performance Sodium-Ion Batteries

2018 ◽  
Vol 10 (44) ◽  
pp. 38006-38014 ◽  
Author(s):  
Xun Zhao ◽  
Ming Luo ◽  
Wenxia Zhao ◽  
Ruimei Xu ◽  
Yong Liu ◽  
...  
Keyword(s):  
Ion Transport ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Carbon Network

Ultrafine TiO2Nanoparticles Confined in N-Doped Porous Carbon Networks as Anodes of High-Performance Sodium-Ion Batteries

2017 ◽  
Vol 4 (6) ◽  
pp. 1516-1522 ◽  
Author(s):  
Xuebo Zhao ◽  
Chunliu Yan ◽  
Xin Gu ◽  
Liangjun Li ◽  
Pengcheng Dai ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Carbon Networks

2D holey cobalt sulfide nanosheets derived from metal–organic frameworks for high-rate sodium ion batteries with superior cyclability

2018 ◽  
Vol 6 (29) ◽  
pp. 14324-14329 ◽  
Author(s):  
Yanfeng Dong ◽  
Wen Shi ◽  
Pengfei Lu ◽  
Jieqiong Qin ◽  
Shuanghao Zheng ◽  
...  
Keyword(s):  
Structural Integrity ◽  
Metal Organic Frameworks ◽  
Sodium Ion ◽  
High Rate ◽  
Cobalt Sulfide ◽  
Sodium Ion Batteries ◽  
Ion Diffusion ◽  
Metal Organic ◽  
Long Life

2D holey Co4S3 nanosheets with enhanced ion diffusion and structural integrity are synthesized for high-rate and long-life sodium ion batteries.

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