Combination of acid-resistor and -scavenger improves the SEI stability and cycling ability of tin–nickel battery anodes in LiPF6-containing electrolyte

Choo, Myeong-Ho; Nguyen, Cao Cuong; Hong, Sukhyun; Kwon, Yo Han; Woo, Sang-Wook; Kim, Je Young; Song, Seung‐Wan

doi:10.1016/j.electacta.2013.08.121

Cited by 26 publications

(42 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fig. 6(b) shows a broad P 2p peak at a binding energy of 134.0 eV after 300 cycles, which may be attributed to decomposed phosphate from the LiPF 6 electrolyte [28]. Before the cycling test, the main peaks at binding energies of 530.8 eV and 532.0 eV in Fig.…”

Section: Resultsmentioning

confidence: 89%

One-Step Hydrothermal Synthesis of SnS2/SnO2/C Hierarchical Heterostructures for Li-ion Batteries Anode with Superior Rate Capabilities

Chen

Yokoshima

Nara

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

Novel three-dimensional hierarchical heterostructures composed of two-dimensional SnS 2 nanoflakes and zero-dimensional SnO 2 nanoparticles were fabricated via a one-step hydrothermal method. Size of the heterostructures was ca. 2 µm in diameter, and individual SnS 2 nanoflakes with thickness of ca. 150 nm were connected to central core of the heterostructures. The SnO 2 nanoparticles in a diameter of ca. 5 nm uniformly covered entire surface of the SnS 2 nanoflakes. Moreover, both of these structures were highly crystalline. Meanwhile, amorphous carbon was formed within the heterostructures. The SnS 2 /SnO 2 /C hierarchical heterostructures had a high initial specific reversible capacity of 1065.7 mAh g -1 , s` cycling stability of 638 mAh g -1 after 30 cycles, and superior rate capability of 550.8 mAh g -1 at 1C rate. These SnS 2 /SnO 2 /C hierarchical heterostructures showed better performance than individual SnS 2 and SnO 2 nanomaterials, and the performance was even higher than the graphene-SnS 2 and graphene-SnO 2 nanohybrid materials. This is attributed to a synergistic effect of high surface area, which is provided by the unique SnS 2 internal nanoflake layered structures decorated with ultra-fine SnO 2 nanoparticles, and an effective beneficial buffer matrix to accommodate the large volume change upon cycling, which is caused by the side-products such as Li 2 S or Li 2 O. The SnS 2 nanoflake was deduced to play a similar role as graphene material, since both possess 2D conducting layer structures.The uniform carbon dispersion within the structures also stabilizes the structures and improves electrical conductivity of the hierarchical heterostructures.

show abstract

Section: Resultsmentioning

confidence: 89%

One-Step Hydrothermal Synthesis of SnS2/SnO2/C Hierarchical Heterostructures for Li-ion Batteries Anode with Superior Rate Capabilities

Chen

Yokoshima

Nara

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

show abstract

“…Capacity retention at the 50th cycle is 70% of the maximum capacity. The inefficient electrochemical reaction behavior during early cycles has been often observed in the earlier studies of Sn and Mg 2 Sn of Mg batteries, and other Sn‐based alloys in Li‐ion batteries . This phenomenon is attributable to the limited participation of active material in the early electrochemical cycles, in particular, at the surface and near surface region, along with the low electronic conductivities of Mg 2 Sn and its surface oxides .…”

Section: Resultsmentioning

confidence: 96%

Unveiling the Roles of Formation Process in Improving Cycling Performance of Magnesium Stannide Composite Anode for Magnesium‐Ion Batteries

Nguyen

Song

2018

Adv Materials Inter

View full text Add to dashboard Cite

The combination of Mg2+‐insertion type anodes with various Mg‐free cathode counterparts and electrolytes enables Mg‐ion batteries. Microsized magnesium stannide (Mg2Sn) active material for a potential Mg2+‐insertion anode has shown extremely low capacity and low Coulombic efficiency in the early cycles, due to not yet a full participation of active material and an irreversible capacity loss by anode–electrolyte interfacial reactions. An activation process, i.e., formation cycle, is necessary to mitigate those issues and to improve the cycling performance. Herein, the application of formation process to the Mg2Sn composite anode that includes graphite as an electrochemically inactive but electronically conductive component, the condition optimization of formation process, and the systematic studies of the effects of formation process on the cycling performance and anode–electrolyte interfacial reactions are reported. A basic understanding of the early cycling behavior and interfacial phenomena of Mg2Sn anode is provided, which gives insight into improvement of performance of alloy anodes in Mg‐ion batteries.

show abstract

“…Note that the TMP is effective in reducing or inhibiting the attack of LiPF 6 -derived Lewis acids (PF 5 , PF 3 O) to the electrode and improving cycling performance [17]. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The coated electrode was dried in a vacuum oven at 110°C for 24 h. 2016 coin half-cells, which consisted of composite electrode as a working electrode, a lithium foil as a counter electrode, the electrolyte of 1 M LiPF 6 in ethylene carbonate (EC): ethyl methyl carbonate (EMC) (3:7 volume ratio, Panax E-tech) containing 3 wt% trimethylphosphite (Aldrich, denoted as TMP) as an acid scavenging agent [17], and a separator (Celgard 2400), were assembled in Ar-filled glove box with the contents of water and oxygen less than 1 ppm. Galvanostatic charge (lithiation)-discharge (delithiation) cycling test was conducted in the voltage window of 0.01-2.0 V at a current density of 70 mA/g (corresponding to the rate of C/10) using a multichannel cycler (WBCS3000, Wonatech).…”

Section: Methodsmentioning

confidence: 99%

Facile synthesis and stable cycling ability of hollow submicron silicon oxide–carbon composite anode material for Li-ion battery

Kim

Nguyen

Kang

et al. 2015

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

Combination of acid-resistor and -scavenger improves the SEI stability and cycling ability of tin–nickel battery anodes in LiPF6-containing electrolyte

Cited by 26 publications

References 26 publications

One-Step Hydrothermal Synthesis of SnS2/SnO2/C Hierarchical Heterostructures for Li-ion Batteries Anode with Superior Rate Capabilities

One-Step Hydrothermal Synthesis of SnS2/SnO2/C Hierarchical Heterostructures for Li-ion Batteries Anode with Superior Rate Capabilities

Unveiling the Roles of Formation Process in Improving Cycling Performance of Magnesium Stannide Composite Anode for Magnesium‐Ion Batteries

Facile synthesis and stable cycling ability of hollow submicron silicon oxide–carbon composite anode material for Li-ion battery

Contact Info

Product

Resources

About