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  • Liu, YiSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)

Porous, robust, thermally stable, and flame retardant nanocellulose/polyimide separators for safe lithium-ion batteries

  • Artikel/kapitelEngelska2023

Förlag, utgivningsår, omfång ...

  • Royal Society of Chemistry (RSC),2023
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:kth-339889
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-339889URI
  • https://doi.org/10.1039/d3ta05148jDOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

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Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • QC 20231128
  • The safety of lithium-ion batteries (LIBs) is paramount for all users. One effective way to improve safety is incorporating heat-resistant polyimide (PI) separators, which can increase the thermal stability of batteries and minimize the risk of thermal runaway. However, preparing PI separators with both an ideal pore structure and adequate mechanical properties remains as a challenge. Here, we introduced decabromodiphenyl ethane (DBDPE) and cellulose nanofibers (CNFs) into PI and produced a hybrid separator with an outstanding pore structure and excellent mechanical properties. Aided with DBDPE, the separators attain a well-defined and uniform pore size (20 nm), while demonstrating high porosities (78%) through phase inversion processes. Owing to the addition of CNFs, the mechanical properties of the separators were significantly improved, with a tensile strength of 25.4 MPa and an elastic modulus of 550.1 MPa. Moreover, the separators demonstrate high ion conductivity (0.45 mS cm-1), excellent thermal-dimensional stability (up to 200 degrees C), remarkable flame retardancy, and outstanding electrolyte wettability. At room temperature, the batteries with the separators demonstrate comparable performance with those of polypropylene (PP) separators. However, when subjected to thermal shock treatments, the batteries with the separators outperform those with PP, showcasing their superior performance. The work introduces a novel strategy for designing high-performance separators, thereby paving the way for advancements in the fabrication of LIBs with enhanced safety features. A porous, robust, and thermally stable hybrid separator was developed to solve the dilemma between desired pore structures and mechanical properties in polyimide separators by introducing decabromodiphenyl ethane and cellulose nanofibers.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Li, ChaoShanghai Jiao Tong Univ, Global Inst Future Technol, Shanghai 200240, Peoples R China. (författare)
  • Li, ChunxingSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Xu, LinheSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Zhou, ShuangSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Zhang, ZeSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Zhang, JunxianSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Soham, DasDuke Kunshan Univ, Dept Nat & Appl Sci, Suzhou 215316, Jiangsu, Peoples R China. (författare)
  • Fan, RongSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Liu, HaoSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Chen, GangSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Li, YuanyuanKTH,Wallenberg Wood Science Center,Biokompositer(Swepub:kth)u1bpdtr4 (författare)
  • Ling, TongNanyang Technol Univ, Sch Chem Chem Engn & Biotechnol, Singapore 637457, Singapore. (författare)
  • Li, ZhipengNorthwestern Polytech Univ, Inst Flexible Elect, Xian 710072, Peoples R China. (författare)
  • Tao, JinsongSouth China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China. (författare)
  • Wan, JiayuShanghai Jiao Tong Univ, Global Inst Future Technol, Shanghai 200240, Peoples R China. (författare)
  • South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China.Shanghai Jiao Tong Univ, Global Inst Future Technol, Shanghai 200240, Peoples R China. (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Materials Chemistry A: Royal Society of Chemistry (RSC)11:43, s. 23360-233692050-74882050-7496

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