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High rate and durable, binder free anode based on silicon loaded MoO3 nanoplatelets.

Martinez-Garcia A, Thapa AK, Dharmadasa R, Nguyen TQ, Jasinski J, Druffel TL, Sunkara MK - Sci Rep (2015)

Bottom Line: Li2MoO4 and Li(1.333)Mo(0.666)O2 were identified as the products of lithiation of pristine MoO3 nanoplatelets and silicon-decorated MoO3, respectively, accounting for lower than previously reported lithiation potentials.MoO3 nanoplatelet arrays were deposited using hot-wire chemical vapor deposition.Silicon decorated MoO3 nanoplatelets exhibited enhanced capacity of 1037 mAh g(-1) with exceptional cyclability when charged/discharged at high current densities of 10 A g(-1).

View Article: PubMed Central - PubMed

Affiliation: 1] Department of Chemical Engineering University of Louisville Louisville, KY 40292. [2] Conn Center for Renewable Energy Research.

ABSTRACT
In order to make fast-charging batteries a reality for electric vehicles, durable, more energy dense and high-current density resistant anodes need to be developed. With such purpose, a low lithiation potential of 0.2 V vs. Li/Li(+) for MoO3 nanoplatelet arrays is reported here for anodes in a lithium ion battery. The composite material here presented affords elevated charge capacity while at the same time withstands rapid cycling for longer periods of time. Li2MoO4 and Li(1.333)Mo(0.666)O2 were identified as the products of lithiation of pristine MoO3 nanoplatelets and silicon-decorated MoO3, respectively, accounting for lower than previously reported lithiation potentials. MoO3 nanoplatelet arrays were deposited using hot-wire chemical vapor deposition. Due to excellent voltage compatibility, composite lithium ion battery anodes comprising molybdenum oxide nanoplatelets decorated with silicon nanoparticles (0.3% by wt.) were prepared using an ultrasonic spray. Silicon decorated MoO3 nanoplatelets exhibited enhanced capacity of 1037 mAh g(-1) with exceptional cyclability when charged/discharged at high current densities of 10 A g(-1).

No MeSH data available.


Related in: MedlinePlus

As-deposited MoO3 nanoplatelet arrays a) SEM (top view), b) XRD of Silicon loaded anode MoO3 [JCPDS 00–035–0609], Si [JCPDS 00–027–1402] before and after cycling Li1.333Mo0.666O2 [JCPDS 01–073–2300], Li2Si2O5 [JCPDS 00–015–0637] c) brightfield TEM of MoO3 platelets, d) HR-TEM of MoO3 platelet, inset FFT.
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f1: As-deposited MoO3 nanoplatelet arrays a) SEM (top view), b) XRD of Silicon loaded anode MoO3 [JCPDS 00–035–0609], Si [JCPDS 00–027–1402] before and after cycling Li1.333Mo0.666O2 [JCPDS 01–073–2300], Li2Si2O5 [JCPDS 00–015–0637] c) brightfield TEM of MoO3 platelets, d) HR-TEM of MoO3 platelet, inset FFT.

Mentions: The hot-filament chemical vapor deposition (HFCVD) experiments using Mo filaments resulted in films that are opaque and light gray in colour. The deposited films were uniform over the entire substrate (1.5 cm diameter). Figure 1a shows that the films are composed of uniform arrays of nanoplatelets vertically aligned normal to the substrate. Similar morphology of thin nanoplatets have been reported in other studies26. The typical dimensions of each platelet are approximately 2 μm x 2 μm x 50 nm.


High rate and durable, binder free anode based on silicon loaded MoO3 nanoplatelets.

Martinez-Garcia A, Thapa AK, Dharmadasa R, Nguyen TQ, Jasinski J, Druffel TL, Sunkara MK - Sci Rep (2015)

As-deposited MoO3 nanoplatelet arrays a) SEM (top view), b) XRD of Silicon loaded anode MoO3 [JCPDS 00–035–0609], Si [JCPDS 00–027–1402] before and after cycling Li1.333Mo0.666O2 [JCPDS 01–073–2300], Li2Si2O5 [JCPDS 00–015–0637] c) brightfield TEM of MoO3 platelets, d) HR-TEM of MoO3 platelet, inset FFT.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4441197&req=5

f1: As-deposited MoO3 nanoplatelet arrays a) SEM (top view), b) XRD of Silicon loaded anode MoO3 [JCPDS 00–035–0609], Si [JCPDS 00–027–1402] before and after cycling Li1.333Mo0.666O2 [JCPDS 01–073–2300], Li2Si2O5 [JCPDS 00–015–0637] c) brightfield TEM of MoO3 platelets, d) HR-TEM of MoO3 platelet, inset FFT.
Mentions: The hot-filament chemical vapor deposition (HFCVD) experiments using Mo filaments resulted in films that are opaque and light gray in colour. The deposited films were uniform over the entire substrate (1.5 cm diameter). Figure 1a shows that the films are composed of uniform arrays of nanoplatelets vertically aligned normal to the substrate. Similar morphology of thin nanoplatets have been reported in other studies26. The typical dimensions of each platelet are approximately 2 μm x 2 μm x 50 nm.

Bottom Line: Li2MoO4 and Li(1.333)Mo(0.666)O2 were identified as the products of lithiation of pristine MoO3 nanoplatelets and silicon-decorated MoO3, respectively, accounting for lower than previously reported lithiation potentials.MoO3 nanoplatelet arrays were deposited using hot-wire chemical vapor deposition.Silicon decorated MoO3 nanoplatelets exhibited enhanced capacity of 1037 mAh g(-1) with exceptional cyclability when charged/discharged at high current densities of 10 A g(-1).

View Article: PubMed Central - PubMed

Affiliation: 1] Department of Chemical Engineering University of Louisville Louisville, KY 40292. [2] Conn Center for Renewable Energy Research.

ABSTRACT
In order to make fast-charging batteries a reality for electric vehicles, durable, more energy dense and high-current density resistant anodes need to be developed. With such purpose, a low lithiation potential of 0.2 V vs. Li/Li(+) for MoO3 nanoplatelet arrays is reported here for anodes in a lithium ion battery. The composite material here presented affords elevated charge capacity while at the same time withstands rapid cycling for longer periods of time. Li2MoO4 and Li(1.333)Mo(0.666)O2 were identified as the products of lithiation of pristine MoO3 nanoplatelets and silicon-decorated MoO3, respectively, accounting for lower than previously reported lithiation potentials. MoO3 nanoplatelet arrays were deposited using hot-wire chemical vapor deposition. Due to excellent voltage compatibility, composite lithium ion battery anodes comprising molybdenum oxide nanoplatelets decorated with silicon nanoparticles (0.3% by wt.) were prepared using an ultrasonic spray. Silicon decorated MoO3 nanoplatelets exhibited enhanced capacity of 1037 mAh g(-1) with exceptional cyclability when charged/discharged at high current densities of 10 A g(-1).

No MeSH data available.


Related in: MedlinePlus