Systematic Search for Lithium Ion Conducting Compounds by Screening of Compositions Combined with Atomistic Simulation

MRS Advances ◽  
2017 ◽  
Vol 2 (9) ◽  
pp. 483-489 ◽  
Author(s):  
Daniel Mutter ◽  
Daniel F. Urban ◽  
Christian Elsässer

ABSTRACTReplacing liquid by solid state electrolytes has the potential to significantly improve current Li ion batteries concerning performance and safety. The material class NZP, based on the compound NaZr2(PO4)3, exhibits a structural framework suitable for ionic conduction. In this work, a systematic compositional screening and simulation approach, combining classical molecular-dynamics, first-principles calculations, and structural analysis was applied, with which a set of new Li ion conducting NZP compounds could be identified.

2021 ◽  
Vol 894 ◽  
pp. 61-66
Author(s):  
Rui Zhi Dong

Due to the development of various mobile electronic devices, such as electric vehicles, rechargeable ion batteries are becoming more and more important. However, the current commercial lithium-ion batteries have obvious defects, including poor safety from Li dendrite and flammable electrolyte, quick capacity loss and low charging and discharging rate. It is very important to find a better two-dimensional material as the anode of the battery to recover the disadvantages. In this paper, first principles calculations are used to explore the performances of VS2 bilayer and VS2 / graphene heterostructure as the anodes of Li ion batteries. Based on the calculation of the valences, binding energy, intercalation voltage, charge transfer and diffusion barrier of Li, it is found that the latter can be used as a better anode material from the perspective of insertion voltage and binding energy. At the same time, the former one is better in terms of diffusion barrier. Our study provides a comprehensive understanding on VS2 based 2D anodes.


2018 ◽  
Vol 6 (26) ◽  
pp. 12630-12636 ◽  
Author(s):  
Sheng Gong ◽  
Shuo Wang ◽  
Junyi Liu ◽  
Yaguang Guo ◽  
Qian Wang

Graphdiyne coating for cathodes of Li-ion batteries is proposed using first-principles calculations with ultralow areal density and ultrafast Li penetration.


RSC Advances ◽  
2017 ◽  
Vol 7 (32) ◽  
pp. 20049-20056 ◽  
Author(s):  
Young-Kyu Han ◽  
Jaeik Yoo ◽  
Taeeun Yim

We presented a computational screening protocol for the efficient development of cathode-electrolyte interphase (CEI)-forming additive materialsviathe first-principles calculations.


2018 ◽  
Vol 1 (6) ◽  
pp. 209-214 ◽  
Author(s):  
Po-Tuan Chen ◽  
Fang-Haur Yang ◽  
Thangavel Sangeetha ◽  
Hong-Min Gao ◽  
K. David Huang

2017 ◽  
Vol 53 (71) ◽  
pp. 9942-9945 ◽  
Author(s):  
G. Naaresh Reddy ◽  
Rakesh Parida ◽  
Santanab Giri

First principles calculations on Li salts of organic heterocyclic superhalogens confirm that they can be used as potential electrolytes in Li-ion batteries.


2020 ◽  
Vol 510 ◽  
pp. 145493 ◽  
Author(s):  
Jianning Zhang ◽  
Lianqiang Xu ◽  
Chen Yang ◽  
Xiuying Zhang ◽  
Ling Ma ◽  
...  

2015 ◽  
Vol 3 (21) ◽  
pp. 11246-11252 ◽  
Author(s):  
Gen-Cai Guo ◽  
Xiao-Lin Wei ◽  
Da Wang ◽  
Yanping Luo ◽  
Li-Min Liu

The pristine and defect-containing phosphorene as promising anode materials for Li-ion batteries (LIBs) have been systematically investigated by first-principles calculations.


Author(s):  
Lei Chen

Lithium (Li) dendrite formation compromises the reliability of Li-ion batteries, either because dendrite pieces lose electrical contractor or growing dendrite penetrates the separator and leads to internal short-circuiting. In this paper, a multi-scale computational approach integrating phase-field model and first-principles calculation is proposed to predict the Li dendrite formation at the anode/electrolyte interface of Li-ion batteries. The first-principles calculation is employed to atomically determine the interfacial energy, which is subsequently fed into the phase-field model at the micro-scale. 1D distribution of fields is first analyzed to validate the proposed model. An apparent 2D tree-type Li dendrite, widely observed in experiments during electrodeposition, is produced using the model. Finally, the 2D dendritic evolution under different electrochemical conditions specified by the applied current densities is discussed.


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