The Effect of Sintering Temperature on Electronic Conductivity of LiFeGdPO4/C as a Lithium-Ion Battery Cathode

2021 ◽  
Vol 1028 ◽  
pp. 138-143
Author(s):  
Iman Rahayu ◽  
Anggi Suprabawati ◽  
Vina M. Puspitasari ◽  
Sahrul Hidayat ◽  
Atiek Rostika Noviyanti
Keyword(s):  
Lithium Ion Battery ◽  
Reduction Method ◽  
Sintering Temperature ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Particle Growth ◽  
Ion Diffusion ◽  
A Value ◽  
High Theoretical Capacity ◽  
Lithium Ion Diffusion

Lithium ion batteries with LiFePO4 cathode have become the focus of research because they are eco-friendly, stable, high average voltage (3.5 V), and high theoretical capacity (170 mAh/g). However, LiFePO4 has disadvantages such as low electrical conductivity (~10-9 S/cm) and low lithium ion diffusion coefficient (~10-14-10-15 cm2/s) that can inhibit its application as a lithium ion battery cathode material. To increase the electronic conductivity of LiFePO4, it can be done by adding carbon as a coating material, then doping gadolinium metal ions because it has a radius similar to Fe, and increasing sintering temperature. Optimizing the sintering temperature can control particle growth and research was study the sintering temperature of the electronic conductivity of LiFeGdPO4/C and obtain the optimum sintering temperature at LiFeGdPO4/C. The carbothermal reduction method used in synthesis, with a variation of sintering temperature of 800°C, 830°C, 850°C, 870°C, and 900°C using reagents LiH2PO4, Fe2O3, Gd2O3, and carbon black. Furthermore the samples were characterized using XRD, SEM-EDS, and four-point probes. The results of the study were expected to increase the conductivity of LiFePO4. The results show the effect of sintering temperature can increase the electronic conductivity of LiFeGdPO4/C. Samples with a sintering temperature 850°C have the highest conductivity among all temperature variations with a value of 1.11 × 10-5 S cm-1.

scholarly journals Improved conductivity and ionic mobility in nanostructured thin films via aliovalent doping for ultra-high rate energy storage

2020 ◽  
Vol 2 (5) ◽  
pp. 2160-2169
Author(s):  
Clayton T. Kacica ◽  
Pratim Biswas
Keyword(s):  
Thin Films ◽  
Energy Storage ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Ionic Mobility ◽  
High Rate ◽  
Ion Diffusion ◽  
Nanostructured Thin Films ◽  
Lithium Ion Diffusion ◽  
Aliovalent Doping

Synthesis of Cu-doped TiO2 nanostructures with excellent high-rate lithium-ion battery performance and enhanced lithium-ion diffusion.

A New sp2–sp3-Hybridized Metallic Carbon Network for Lithium-Ion Battery Anode with Enhanced Safety and Lithium-Ion Diffusion Rate

2019 ◽  
Vol 123 (25) ◽  
pp. 15412-15418 ◽  
Author(s):  
Dong Fan ◽  
Andrey A. Golov ◽  
Artem A. Kabanov ◽  
Chengke Chen ◽  
Shaohua Lu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Diffusion Rate ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Lithium Ion Diffusion ◽  
Carbon Network ◽  
Battery Anode

scholarly journals Effect of PVP Coating on LiMnBO3 Cathodes for Li-Ion Batteries

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5528
Author(s):  
Bolong Hong ◽  
Xiangming He ◽  
Huihua Yi ◽  
Chenglin Hu
Keyword(s):  
High Capacity ◽  
Lithium Ion ◽  
Particle Growth ◽  
Li Ion Batteries ◽  
Ion Diffusion ◽  
Solid State Method ◽  
Structure Morphology ◽  
Carbon Additives ◽  
Li Ion ◽  
Lithium Ion Diffusion

LiMnBO3 is a potential cathode for Li-ion batteries, but it suffers from a low electrochemical activity. To improve the electrochemical performance of LiMnBO3, the effect of polyvinyl pyrrolidone (PVP) as carbon additive was studied. Monoclinic LiMnBO3/C and LiMnBO3-MnO/C materials were obtained by a solid-state method at 500 °C. The structure, morphology and electrochemical behavior of these materials are characterized and compared. The results show that carbon additives and ball-milling dispersants affect the formation of impurities in the final products, but MnO is beneficial for the performance of LiMnBO3. The sample of LiMnBO3-MnO/C delivered a high capacity of 162.1 mAh g−1 because the synergistic effect of the MnO/C composite and the suppression of the PVP coating on particle growth facilitates charge transfer and lithium–ion diffusion.

scholarly journals Organic-phase synthesis of Li3V2(PO4)3@Carbon nanocrystals and their lithium storage properties

RSC Advances ◽  
2018 ◽  
Vol 8 (34) ◽  
pp. 19335-19340 ◽  
Author(s):  
Cunliang Zhang ◽  
Yanmei Liu ◽  
Jian Li ◽  
Kai Zhu ◽  
Zhe Chen ◽  
...  
Keyword(s):  
Organic Phase ◽  
Diffusion Length ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Lithium Storage ◽  
Phase Synthesis ◽  
Enhanced Surface ◽  
Lithium Ion Diffusion ◽  
Storage Properties

Li3V2(PO4)3@Carbon nanocrystals exhibit superior lithium storage properties due to the shortened lithium-ion diffusion length and the enhanced surface electronic conductivity.

Li3SbO4 lithium-ion battery material: Defects, lithium ion diffusion and tetravalent dopants

2019 ◽  
Vol 225 ◽  
pp. 34-41 ◽  
Author(s):  
Navaratnarajah Kuganathan ◽  
Apostolos Kordatos ◽  
Sripathmanathan Anurakavan ◽  
Poobalasuntharam Iyngaran ◽  
Alexander Chroneos
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Material Defects ◽  
Battery Material ◽  
Lithium Ion Diffusion

Synthesis and high cycle performance of Li2ZnTi3O8/C anode material promoted by asphalt as a carbon precursor

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49298-49306 ◽  
Author(s):  
Yurong Ren ◽  
Peng Lu ◽  
Xiaobing Huang ◽  
Jianning Ding ◽  
Haiyan Wang
Keyword(s):  
Anode Material ◽  
Electronic Conductivity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Carbon Layer ◽  
Cycle Performance ◽  
Carbon Precursor ◽  
Ion Diffusion ◽  
Lithium Ion Diffusion

A carbon layer (ca. 3 nm) formed on the surface of Li2ZnTi3O8 nanoparticles (ca. 30 nm) which is favorable to improve the electronic conductivity and lithium ion diffusion, resulting in improved rate capability and cycling performance.

scholarly journals Fast 3D-lithium-ion diffusion and high electronic conductivity of Li2MnSiO4 surfaces for rechargeable lithium-ion batteries

RSC Advances ◽  
2021 ◽  
Vol 11 (16) ◽  
pp. 9721-9730
Author(s):  
Gamachis Sakata Gurmesa ◽  
Natei Ermias Benti ◽  
Mesfin Diro Chaka ◽  
Girum Ayalneh Tiruye ◽  
Qinfang Zhang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Low Cost ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
High Electronic Conductivity ◽  
Lithium Ion Diffusion ◽  
The Way

The DFT analysis revealed fast 3D-lithium-ion diffusion pathways and high electronic conductivity in the Li2MnSiO4 surface, and thus paving the way for designing and developing efficient and low-cost rechargeable lithium-ion batteries.

scholarly journals PEDOT-Coated Red Phosphorus Nanosphere Anodes for Pseudocapacitive Potassium-Ion Storage

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1732
Author(s):  
Dan Zhao ◽  
Qian Zhao ◽  
Zhenyu Wang ◽  
Lan Feng ◽  
Jinying Zhang ◽  
...  
Keyword(s):  
Surface Engineering ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Average Diameter ◽  
Potassium Ion ◽  
Red Phosphorus ◽  
Fast Charging ◽  
Potential Alternative ◽  
High Theoretical Capacity

Potassium-ion batteries (KIBs) have come up as a potential alternative to lithium-ion batteries due to abundant potassium storage in the crust. Red phosphorus is a promising anode material for KIBs with abundant resources and high theoretical capacity. Nevertheless, large volume expansion, low electronic conductivity, and limited K+ charging speed in red phosphorus upon cycling have severely hindered the development of red phosphorus-based anodes. To obtain improved conductivity and structural stability, surface engineering of red phosphorus is required. Poly(3,4-ethylenedioxythiophene) (PEDOT)-coated red phosphorus nanospheres (RPNP@PEDOT) with an average diameter of 60 nm were synthesized via a facile solution-phase approach. PEDOT can relieve the volume change of red phosphorus and promote electron/ion transportation during charge−discharge cycles, which is partially corroborated by our DFT calculations. A specific capacity of 402 mAh g−1 at 0.1 A g−1 after 40 cycles, and a specific capacity of 302 mAh g−1 at 0.5 A g−1 after 275 cycles, were achieved by RPNP@PEDOT anode with a high pseudocapacitive contribution of 62%. The surface–interface engineering for the organic–inorganic composite of RPNP@PEDOT provides a novel perspective for broad applications of red phosphorus-based KIBs in fast charging occasions.

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