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Title: A bamboo-inspired nanostructure design for flexible foldable and twistable energy storage devices

Abstract

Flexible energy storage devices are critical components for emerging flexible electronics. Electrode design is key in the development of all-solid-state supercapacitors with superior electrochemical performances and mechanical durability. We propose a bamboo-like graphitic carbon nanofiber with a well-balanced macro-, meso-, and microporosity, enabling excellent mechanical flexibility, foldability, and electrochemical performances. Our design is inspired by the structure of bamboos, where a periodic distribution of interior holes along the length and graded pore structure at the cross section not only enhance their stability under different mechanical deformation conditions but also provide a high surface area accessible to the electrolyte and low ion-transport resistance. The prepared nanofiber network electrode recovers its initial state easily after 3-folded manipulation. The mechanically robust membrane is explored as a free-standing electrode for a flexible all-solid-state supercapacitor. Without the need for extra support, the volumetric energy and power densities based on the whole device are greatly improved compared to the state-of-the-art devices. Furthermore, even under continuous dynamic operations of forceful bending (90°) and twisting (180°), the as-designed device still exhibits stable electrochemical performances with 100% capacitance retention. As a result, such a unique supercapacitor holds great promise for high-performance flexible electronics.

Authors:
 [1];  [2];  [3];  [4];  [3];  [3];  [3];  [3];  [5];  [3];  [5];  [3];  [4];  [3];  [6]
  1. Huazhong Univ. of Science and Technology, Wuhan (China); Stanford Univ., Stanford, CA (United States)
  2. Stanford Univ., Stanford, CA (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  3. Huazhong Univ. of Science and Technology, Wuhan (China)
  4. Stanford Univ., Stanford, CA (United States)
  5. Univ. of Jinan, Jinan (China)
  6. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1185032
Report Number(s):
SAND-2014-20710J
Journal ID: ISSN 1530-6984; 553941
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 15; Journal Issue: 6; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; bamboo-like carbon nanofibers; mechanical properties; supercapacitor; electrochemical performances

Citation Formats

Sun, Yongming, Sills, Ryan B, Hu, Xianluo, Wei Seh, Zhi, Xiao, Xu, Xu, Henghui, Luo, Wei, Jin, Huanyu, Xin, Ying, Li, Tianqi, Zhang, Zhaoliang, Zhou, Jun, Cai, Wei, Huang, Yunhui, and Cui, Yi. A bamboo-inspired nanostructure design for flexible foldable and twistable energy storage devices. United States: N. p., 2015. Web. doi:10.1021/acs.nanolett.5b00738.
Sun, Yongming, Sills, Ryan B, Hu, Xianluo, Wei Seh, Zhi, Xiao, Xu, Xu, Henghui, Luo, Wei, Jin, Huanyu, Xin, Ying, Li, Tianqi, Zhang, Zhaoliang, Zhou, Jun, Cai, Wei, Huang, Yunhui, & Cui, Yi. A bamboo-inspired nanostructure design for flexible foldable and twistable energy storage devices. United States. https://doi.org/10.1021/acs.nanolett.5b00738
Sun, Yongming, Sills, Ryan B, Hu, Xianluo, Wei Seh, Zhi, Xiao, Xu, Xu, Henghui, Luo, Wei, Jin, Huanyu, Xin, Ying, Li, Tianqi, Zhang, Zhaoliang, Zhou, Jun, Cai, Wei, Huang, Yunhui, and Cui, Yi. 2015. "A bamboo-inspired nanostructure design for flexible foldable and twistable energy storage devices". United States. https://doi.org/10.1021/acs.nanolett.5b00738. https://www.osti.gov/servlets/purl/1185032.
@article{osti_1185032,
title = {A bamboo-inspired nanostructure design for flexible foldable and twistable energy storage devices},
author = {Sun, Yongming and Sills, Ryan B and Hu, Xianluo and Wei Seh, Zhi and Xiao, Xu and Xu, Henghui and Luo, Wei and Jin, Huanyu and Xin, Ying and Li, Tianqi and Zhang, Zhaoliang and Zhou, Jun and Cai, Wei and Huang, Yunhui and Cui, Yi},
abstractNote = {Flexible energy storage devices are critical components for emerging flexible electronics. Electrode design is key in the development of all-solid-state supercapacitors with superior electrochemical performances and mechanical durability. We propose a bamboo-like graphitic carbon nanofiber with a well-balanced macro-, meso-, and microporosity, enabling excellent mechanical flexibility, foldability, and electrochemical performances. Our design is inspired by the structure of bamboos, where a periodic distribution of interior holes along the length and graded pore structure at the cross section not only enhance their stability under different mechanical deformation conditions but also provide a high surface area accessible to the electrolyte and low ion-transport resistance. The prepared nanofiber network electrode recovers its initial state easily after 3-folded manipulation. The mechanically robust membrane is explored as a free-standing electrode for a flexible all-solid-state supercapacitor. Without the need for extra support, the volumetric energy and power densities based on the whole device are greatly improved compared to the state-of-the-art devices. Furthermore, even under continuous dynamic operations of forceful bending (90°) and twisting (180°), the as-designed device still exhibits stable electrochemical performances with 100% capacitance retention. As a result, such a unique supercapacitor holds great promise for high-performance flexible electronics.},
doi = {10.1021/acs.nanolett.5b00738},
url = {https://www.osti.gov/biblio/1185032}, journal = {Nano Letters},
issn = {1530-6984},
number = 6,
volume = 15,
place = {United States},
year = {Tue May 26 00:00:00 EDT 2015},
month = {Tue May 26 00:00:00 EDT 2015}
}

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