In situ and ex situ carbon coated Zn2SnO4 nanoparticles as promising negative electrodes for Li-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (82) ◽  
pp. 67210-67219 ◽  
Author(s):  
Subramanian Yuvaraj ◽  
Won Jong Lee ◽  
Chang Woo Lee ◽  
Ramakrishnan Kalai Selvan
Keyword(s):  
Hydrothermal Method ◽  
Ex Situ ◽  
Li Ion Batteries ◽  
Facile Hydrothermal Method ◽  
Zinc Stannate ◽  
Negative Electrodes ◽  
Carbon Coated ◽  
Li Ion

Zinc stannate, Zn2SnO4 nanoparticles are successfully synthesized by a facile hydrothermal method.

scholarly journals Evolution of disposable bamboo chopsticks into uniform carbon fibers: a smart strategy to fabricate sustainable anodes for Li-ion batteries

2014 ◽  
Vol 7 (8) ◽  
pp. 2670-2679 ◽  
Author(s):  
Jian Jiang ◽  
Jianhui Zhu ◽  
Wei Ai ◽  
Zhanxi Fan ◽  
Xiaonan Shen ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Carbon Fibers ◽  
Electrochemical Behavior ◽  
Li Ion Batteries ◽  
Facile Hydrothermal Method ◽  
Li Ion

Uniform carbon fibers evolved from bamboo chopsticks garbage are achieved by a facile hydrothermal method, exhibiting competitive electrochemical behavior with commercial graphite, or pretty high anodic performance after being optimized.

scholarly journals Resolving chemical and spatial heterogeneities at complex electrochemical interfaces in Li ion batteries

2021 ◽  
Author(s):  
Julia Hestenes ◽  
Richard May ◽  
Jerzy Sadowski ◽  
Naiara Munich ◽  
Lauren Marbella
Keyword(s):  
Spatial Information ◽  
Porous Electrode ◽  
Ex Situ ◽  
Solution Nmr ◽  
Material Surface ◽  
Crystallographic Structure ◽  
Li Ion Batteries ◽  
Composite Surface ◽  
Li Ion

The high specific capacities of Ni-rich transition metal oxides have garnered immense interest for improving the energy density of Li-ion batteries (LIBs). Despite the potential of these materials, Ni-rich cathodes suffer from interfacial instabilities that lead to crystallographic rearrangement of the active material surface as well as the formation of a cathode electrolyte interphase (CEI) layer on the composite during electrochemical cycling. While changes in crystallographic structure can be detected with diffraction-based methods, probing the chemistry of the disordered, heterogeneous CEI layer is challenging. In this work, we use a combination of ex situ solid-state nuclear magnetic resonance (SSNMR) spectroscopy and X-ray photoemission electron microscopy (XPEEM) to provide chemical and spatial information on the CEI deposited on LiNi0.8Mn0.1Co0.1O2 (NMC811) composite cathode films. Specifically, XPEEM elemental maps offer insight into the lateral arrangement of the electrolyte decomposition products that comprise the CEI and paramagnetic interactions (assessed with electron paramagnetic resonance (EPR) and relaxation measurements) in 13C SSNMR provide information on the radial arrangement of the CEI from the NMC811 particles outward. Using this approach, we find that LiF, Li2CO3, and carboxy-containing structures are directly appended to NMC811 active particles, whereas soluble species detected during in situ 1H and 19F solution NMR experiments (e.g., alkyl carbonates, HF, and vinyl compounds) are randomly deposited on the composite surface. We show that the combined approach of ex situ SSNMR and XPEEM, in conjunction with in situ solution NMR, allows spatially-resolved, molecular-level characterization of paramagnetic surfaces and new insights into electrolyte oxidation mechanisms in porous electrode films.

scholarly journals Scalable synthesis of carbon stabilized SiO/graphite sheets composite as anode for high-performance Li ion batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (63) ◽  
pp. 39762-39766 ◽  
Author(s):  
Qianliang Zhang ◽  
Ning Lin ◽  
Tianjun Xu ◽  
Kangze Shen ◽  
Tieqiang Li ◽  
...  
Keyword(s):  
High Performance ◽  
Li Ion Batteries ◽  
Carbon Coated ◽  
Li Ion ◽  
Scalable Synthesis ◽  
Graphite Composites ◽  
Graphite Sheets

Various carbon coated SiO/graphite composites are fabricated through in situ polymerization and followed by annealing for high-performance Li-ion batteries.

In Situ Carbon Coated Li2MnSiO4/C Composites as Cathodes for Enhanced Performance Li-Ion Batteries

2012 ◽  
Vol 159 (12) ◽  
pp. A1954-A1960 ◽  
Author(s):  
Akkisetty Bhaskar ◽  
Melepurath Deepa ◽  
T. N. Rao ◽  
U. V. Varadaraju
Keyword(s):  
Li Ion Batteries ◽  
Carbon Coated ◽  
Li Ion

In Situ and Ex Situ Diagnosis of Nanoscale Electrochemical Processes Using Miniature All-Solid-State Li-Ion Batteries

2012 ◽  
Vol 18 (S2) ◽  
pp. 1322-1323 ◽  
Author(s):  
V.P. Oleshko ◽  
D. Ruzmetov ◽  
P.M. Haney ◽  
H.J. Lezec ◽  
A.K. Agrawal ◽  
...  
Keyword(s):  
Solid State ◽  
Ex Situ ◽  
Li Ion Batteries ◽  
Electrochemical Processes ◽  
Li Ion

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

scholarly journals Unraveling the Reaction Mechanisms of SiO Anodes for Li-Ion Batteries by Combining in Situ 7Li and ex Situ 7Li/29Si Solid-State NMR Spectroscopy

2019 ◽  
Vol 141 (17) ◽  
pp. 7014-7027 ◽  
Author(s):  
Keitaro Kitada ◽  
Oliver Pecher ◽  
Pieter C. M. M. Magusin ◽  
Matthias F. Groh ◽  
Robert S. Weatherup ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Reaction Mechanisms ◽  
Solid State Nmr ◽  
Ex Situ ◽  
Li Ion Batteries ◽  
Solid State Nmr Spectroscopy ◽  
Li Ion
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