V2O5 Textile Cathodes with High Capacity and Stability for Flexible Lithium‐Ion Batteries. Issue 7 (10th January 2020)

• Record Type: Journal Article
• Authors: Zhu, Yujing; Yang, Mei; Huang, Qiyao; Wang, Dongrui; Yu, Ranbo; Wang, Jiangyan; Zheng, Zijian; Wang, Dan
• Is Part Of: Advanced materials. Volume 32:Issue 7(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-01-10
• Subjects: cathodes -- flexible electronics -- hollow multishelled structures -- lithium‐ion batteries -- metallic textiles; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201906205
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract: Textile‐based energy‐storage devices are highly appealing for flexible and wearable electronics. Here, a 3D textile cathode with high loading, which couples hollow multishelled structures (HoMSs) with conductive metallic fabric, is reported for high‐performance flexible lithium‐ion batteries. V2 O5 HoMSs prepared by sequential templating approach are used as active materials and conductive metallic fabrics are applied as current collectors and flexible substrates. Taking advantage of the desirable structure of V2 O5 HoMSs that effectively buffers the volume expansion and alleviates the stress/strain during repeated Li‐insertion/extraction processes, as well as the robust flexible metallic‐fabric current collector, the as‐prepared fabric devices show excellent electrochemical performance and ultrahigh stability. The capacity retains a high value of 222.4 mA h g −1 at a high mass loading of 2.5 mg cm −2 even after 500 charge/discharge cycles, and no obvious performance degradation is observed after hundreds of cycles of bending and folding. These results indicate that V2 O5 HoMSs/metallic‐fabric cathode electrode is promising for highly flexible lithium‐ion batteries. Abstract : A 3D textile cathode that combines hollow multishelled structures with conductive metallic fabric is fabricated for high‐performance flexible lithium‐ion batteries. The capacity retains a high value of 222.4 mA h g −1 at a high mass loading of 2.5 mg cm −2 even after 500 charge/discharge cycles.