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Silicon-Nanographite Aerogel-Based Anodes for High Performance Lithium Ion Batteries
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. Deemed Univ, Maharashtra, India.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.ORCID iD: 0000-0002-4303-2585
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
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2019 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 9, article id 14621Article in journal (Refereed) Published
Abstract [en]

To increase the energy storage density of lithium-ion batteries, silicon anodes have been explored due to their high capacity. One of the main challenges for silicon anodes are large volume variations during the lithiation processes. Recently, several high-performance schemes have been demonstrated with increased life cycles utilizing nanomaterials such as nanoparticles, nanowires, and thin films. However, a method that allows the large-scale production of silicon anodes remains to be demonstrated. Herein, we address this question by suggesting new scalable nanomaterial-based anodes. Si nanoparticles were grown on nanographite flakes by aerogel fabrication route from Si powder and nanographite mixture using polyvinyl alcohol (PVA). This silicon-nanographite aerogel electrode has stable specific capacity even at high current rates and exhibit good cyclic stability. The specific capacity is 455 mAh g−1 for 200th cycles with a coulombic efficiency of 97% at a current density 100 mA g−1.

Place, publisher, year, edition, pages
2019. Vol. 9, article id 14621
Keywords [en]
Silicon-Nanographite Aerogel-Based Anodes for High Performance Lithium Ion Batteries Supplementary Information
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:miun:diva-37569DOI: 10.1038/s41598-019-51087-yISI: 000489555900015Scopus ID: 2-s2.0-85073112106OAI: oai:DiVA.org:miun-37569DiVA, id: diva2:1365266
Available from: 2019-10-24 Created: 2019-10-24 Last updated: 2023-03-08Bibliographically approved
In thesis
1. A scalable furnace technique to grow silicon nanoparticles for high-performance Li-ion battery anodes
Open this publication in new window or tab >>A scalable furnace technique to grow silicon nanoparticles for high-performance Li-ion battery anodes
2023 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Lithium-ion batteries are one of the key technologies to address the global climate challenge. Higher battery capacity could also be seen as indirectly influencing the entire value chain. One way to increase capacity is to add silicon to the graphite anode, since silicon can store much more lithium ions than graphite. Several high-performance schemes utilizing silicon nano solutions have been demonstrated. However, industrial-scale implementation of these solutions still poses a challenge. In this thesis I present a novel scalable furnace technique to create silicon nanoparticles attached to the nanographite flakes. The novel furnace technique allows compatibility with already established industrial-scale electrode manufacturing techniques, presenting itself as a promising strategy for engineering electrodes with endurable performance.

Abstract [sv]

Litiumjonbatterier är en av nyckelteknologierna för att möta den globala klimatutmaningen. Högre batterikapacitet kan också indirekt påverka hela värdekedjan. Ett sätt att öka kapaciteten är att tillsätta kisel till grafitanoden eftersom kisel kan lagra mycket mer litiumjoner än grafit. Flera högpresterande system som använder kiselnanolösningar har demonstrerats. Implementering i industriell skala av dessa lösningar är dock fortfarande en utmaning. I denna avhandling presenteras en ny skalbar ugnsteknik för att skapa kiselnanopartiklar på nanografitflak. Den nya ugnstekniken är kompatibel med redan etablerade industriella metoder för tillverkning av elektroder, och kan vara en lovande strategi för att konstruera långtidsstabila elektroder.

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2023. p. 47
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 193
Keywords
Li Ion Battery, Aerogel-Based Anodes, Novel Method, silicon nanoparticles, Nanographite, High Capacity
National Category
Composite Science and Engineering
Identifiers
urn:nbn:se:miun:diva-47739 (URN)978-91-89786-01-1 (ISBN)
Presentation
2023-03-10, C312, Holmgatan 10, 851 70 Sundsvall, 09:00 (English)
Opponent
Supervisors
Funder
Swedish Energy Agency, 2021-002255
Note

Vid tidpunkten för framläggningen av avhandlingen var följande delarbete opublicerat: delarbete III (inskickat).

At the time of the defence the following paper was unpublished: paper III (submitted)

Available from: 2023-03-08 Created: 2023-03-08 Last updated: 2023-03-13Bibliographically approved

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Phadatare, Manisha R.Patil, RohanBlomquist, NicklasForsberg, SvenÖrtegren, JonasHummelgård, MagnusOlin, Håkan

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