Observation of Electrochemically Driven Elemental Segregation in a Si Alloy Thin-Film Anode and its Effects on Cyclic Stability for Li-Ion Batteries

2015 ◽  
Vol 5 (22) ◽  
pp. 1501136 ◽  
Author(s):  
Minsub Oh ◽  
Sekwon Na ◽  
Chang-Su Woo ◽  
Jun-Ho Jeong ◽  
Sung-Soo Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Alloy Thin Film ◽  
Cyclic Stability ◽  
Li Ion Batteries ◽  
Elemental Segregation ◽  
Li Ion

scholarly journals The role of thermal annealing on the microstructures of (Ti, Fe)-alloyed Si thin-film anodes for high-performance Li-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (17) ◽  
pp. 9168-9174 ◽  
Author(s):  
Minsub Oh ◽  
Ilwhan Kim ◽  
Hoo-Jeong Lee ◽  
Seungmin Hyun ◽  
Chiwon Kang
Keyword(s):  
Thin Film ◽  
Thermal Annealing ◽  
High Performance ◽  
Cyclic Stability ◽  
Li Ion Batteries ◽  
Microstructural Changes ◽  
Li Ion ◽  
Si Thin Film

We investigated the role of annealing on the microstructural changes and cyclic stability of (Ti, Fe)-alloyed Si thin-film anodes.

AC Magnetron Sputtering: An Industrial Approach for High‐Voltage and High‐Performance Thin‐Film Cathodes for Li‐Ion Batteries

2021 ◽  
pp. 2002125
Author(s):  
Jokin Rikarte ◽  
Iñaki Madinabeitia ◽  
Giorgio Baraldi ◽  
Francisco José Fernández‐Carretero ◽  
Víctor Bellido‐González ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
High Voltage ◽  
High Performance ◽  
Li Ion Batteries ◽  
Li Ion

scholarly journals High power nano-structured V2O5 thin film cathodes by atomic layer deposition

2014 ◽  
Vol 2 (36) ◽  
pp. 15044-15051 ◽  
Author(s):  
Erik Østreng ◽  
Knut Bjarne Gandrud ◽  
Yang Hu ◽  
Ola Nilsen ◽  
Helmer Fjellvåg
Keyword(s):  
Thin Film ◽  
Atomic Layer Deposition ◽  
High Power ◽  
Atomic Layer ◽  
Li Ion Batteries ◽  
Layer Deposition ◽  
Li Ion

Atomic layer deposition (ALD) has been used to prepare nano-structured cathode films for Li-ion batteries of V2O5 from VO(thd)2 and ozone at 215 °C.

Improved electrochemical performance of LiCoO2 electrodes for high-voltage operations by Ag thin film coating via magnetron sputtering

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3513-3518 ◽  
Author(s):  
Taner Zerrin ◽  
Mihri Ozkan ◽  
Cengiz S. Ozkan
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
Electrochemical Performance ◽  
High Voltage ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Interface Layer ◽  
Li Ion Batteries ◽  
Electrode Structure ◽  
Li Ion

ABSTRACTIncreasing the operation voltage of LiCoO2 (LCO) is a direct way to enhance the energy density of the Li-ion batteries. However, at high voltages, the cycling stability degrades very fast due to the irreversible changes in the electrode structure, and formation of an unstable solid electrolyte interface layer. In this work, Ag thin film was prepared on commercial LCO cathode by using magnetron sputtering technique. Ag coated electrode enabled an improved electrochemical performance with a better cycling capability. After 100 cycles, Ag coated LCO delivers a discharge capacity of 106.3 mAh g-1 within 3 - 4.5 V at C/5, which is increased by 45 % compared to that of the uncoated LCO. Coating the electrode surface with Ag thin film also delivered an improved Coulombic efficiency, which is believed to be an indication of suppressed parasitic reactions at the electrode interface. This work may lead to new methods on surface modifications of LCO and other cathode materials to achieve high-capacity Li-ion batteries for high-voltage operations.

In operando measuring circumferential internal strain of 18650 Li-ion batteries by thin film strain gauge sensors

2021 ◽  
Vol 516 ◽  
pp. 230669
Author(s):  
Shengxin Zhu ◽  
Le Yang ◽  
Jiawei Wen ◽  
Xiaolong Feng ◽  
Peijun Zhou ◽  
...  
Keyword(s):  
Thin Film ◽  
Strain Gauge ◽  
Internal Strain ◽  
Li Ion Batteries ◽  
Li Ion ◽  
In Operando
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