scholarly journals Thermal synthesis of conversion-type bismuth fluoride cathodes for high-energy-density Li-ion batteries

2022 ◽  
Vol 5 (1) ◽  
Author(s):  
Julian F. Baumgärtner ◽  
Frank Krumeich ◽  
Michael Wörle ◽  
Kostiantyn V. Kravchyk ◽  
Maksym V. Kovalenko
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Inert Atmosphere ◽  
Discharge Voltage ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Thermal Synthesis ◽  
High Theoretical Capacity ◽  
Li Ion ◽  
Scalable Synthesis

AbstractTowards enhancement of the energy density of Li-ion batteries, BiF3 has recently attracted considerable attention as a compelling conversion-type cathode material due to its high theoretical capacity of 302 mAh g−1, average discharge voltage of ca. 3.0 V vs. Li+/Li, the low theoretical volume change of ca. 1.7% upon lithiation, and an intrinsically high oxidative stability. Here we report a facile and scalable synthesis of phase-pure and highly crystalline orthorhombic BiF3via thermal decomposition of bismuth(III) trifluoroacetate at T = 300 °C under inert atmosphere. The electrochemical measurements of BiF3 in both carbonate (LiPF6-EC/DMC)- and ionic liquid-based (LiFSI-Pyr1,4TFSI) Li-ion electrolytes demonstrated that ionic liquids improve the cyclic stability of BiF3. In particular, BiF3 in 4.3 M LiFSI-Pyr1,4TFSI shows a high initial capacity of 208 mA g−1 and capacity retention of ca. 50% over at least 80 cycles at a current density of 30 mA g−1.

Optimized electron occupancy of solid-solution transition metals for suppressing the oxygen evolution of Li2MnO3

2021 ◽  
Vol 9 (14) ◽  
pp. 9337-9346
Author(s):  
Erhong Song ◽  
Yifan Hu ◽  
Ruguang Ma ◽  
Yining Li ◽  
Xiaolin Zhao ◽  
...  
Keyword(s):  
Solid Solution ◽  
Energy Density ◽  
Transition Metals ◽  
Oxygen Evolution ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Increasing Demand ◽  
Layered Cathodes

Li-rich layered cathodes based on Li2MnO3 have exhibited extraordinary promise to satisfy the rapidly increasing demand for high-energy density Li-ion batteries.

Novel low-cost, high-energy-density (>700 Wh kg−1) Li-rich organic cathodes for Li-ion batteries

2021 ◽  
Vol 415 ◽  
pp. 128509
Author(s):  
Qihang Yu ◽  
Wu Tang ◽  
Yang Hu ◽  
Jian Gao ◽  
Ming Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

Accordion-like stretchable Li-ion batteries with high energy density

2019 ◽  
Vol 17 ◽  
pp. 136-142 ◽  
Author(s):  
Changmin Shi ◽  
Tianyang Wang ◽  
Xiangbiao Liao ◽  
Boyu Qie ◽  
Pengfei Yang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

Design and Realization of an Intelligent Protection Circuit for Li-Ion Batteries

2011 ◽  
Vol 282-283 ◽  
pp. 82-85
Author(s):  
Xiao Peng Ji ◽  
Xing Feng Guan ◽  
Zhen Hong Wang
Keyword(s):  
Energy Density ◽  
Circuit Design ◽  
Theoretical Basis ◽  
Safety Concern ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Safety Protection ◽  
Li Ion ◽  
Protection Circuit

Li-ion batteries have been widely used. However, the safety concern is always serious due to its high energy density. In order to improve the safety of the batteries, it is necessary to use the protection integration circuit. In this article, the concept for realizing the safety protection of Li-ion batteries during charging and discharging is described briefly. A circuit design using Seiko BMS chip S-8209 is purposed. Based on this, a simulation was performed and verified using Pspice program, which provides a theoretical basis for the circuit design.

Triptycene-based quinone molecules showing multi-electron redox reactions for large capacity and high energy organic cathode materials in Li-ion batteries

2018 ◽  
Vol 6 (7) ◽  
pp. 3134-3140 ◽  
Author(s):  
Ji Eon Kwon ◽  
Chang-Seok Hyun ◽  
Young Jun Ryu ◽  
Joungphil Lee ◽  
Dong Joo Min ◽  
...  
Keyword(s):  
Energy Density ◽  
Cathode Materials ◽  
Redox Reactions ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Large Capacity ◽  
Li Ion

Triptycene bearing three benzoquinone moieties in a rigid 3-D tripod structure is capable of utilizing five-electron redox reactions that can provide a large capacity and high energy density in Li-ion cells.

Challenges in Developing High Energy Density Li-Ion Batteries with High Voltage Cathodes

2014 ◽  
pp. 853-857 ◽  
Author(s):  
T. Richard Jow ◽  
Jan L. Allen ◽  
Oleg A. Borodin ◽  
Samuel A. Delp ◽  
Joshua L. Allen
Keyword(s):  
Energy Density ◽  
High Voltage ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

scholarly journals Li 2 O:Li–Mn–O Disordered Rock‐Salt Nanocomposites as Cathode Prelithiation Additives for High‐Energy Density Li‐Ion Batteries

2020 ◽  
Vol 10 (7) ◽  
pp. 1902788 ◽  
Author(s):  
Maria Diaz‐Lopez ◽  
Philip A. Chater ◽  
Pierre Bordet ◽  
Melanie Freire ◽  
Christian Jordy ◽  
...  
Keyword(s):  
Energy Density ◽  
Rock Salt ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

scholarly journals N-Enriched carbon nanofibers for high energy density supercapacitors and Li-ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (62) ◽  
pp. 36075-36081 ◽  
Author(s):  
Sayali B. Kale ◽  
Manjiri A. Mahadadalkar ◽  
Chang Hyo Kim ◽  
Yoong Ahm Kim ◽  
Manish S. Jayswal ◽  
...  
Keyword(s):  
Energy Density ◽  
Carbon Nanofibers ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
One Step ◽  
Li Ion

Nitrogen enriched carbon nanofibers have been obtained by one-step carbonization/activation of PAN-based nanofibers with various concentrations of melamine at 800 °C under a N2 atmosphere.

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