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In Situ‐Formed Hierarchical Metal–Organic Flexible Cathode for High‐Energy Sodium‐Ion Batteries
Author(s) -
Huang Ying,
Fang Chun,
Zeng Rui,
Liu Yaojun,
Zhang Wang,
Wang Yanjie,
Liu Qingju,
Huang Yunhui
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201701484
Subject(s) - cathode , materials science , nanocomposite , anode , electrode , chemical engineering , thermal stability , metal , nanotechnology , energy storage , composite number , carbon fibers , metal organic framework , nanofiber , composite material , chemistry , organic chemistry , metallurgy , power (physics) , physics , quantum mechanics , adsorption , engineering
Metal–organic compounds are a family of electrode materials with structural diversity and excellent thermal stability for rechargeable batteries. Here, we fabricated a hierarchical nanocomposite with metal–organic cuprous tetracyanoquinodimethane (CuTCNQ) in a 3 D conductive carbon nanofibers (CNFs) network by in situ growth, and evaluated it as flexible cathode for sodium‐ion batteries (SIBs). CuTCNQ in such flexible composite electrode is able to exhibit a high capacity of 252 mAh g −1 at 0.1 C and highly reversible stability for 1200 cycles within the voltage range of 2.5–4.1 V (vs. Na + /Na). A high specific energy of 762 Wh kg −1 was obtained with high average potential of 3.2 V (vs. Na + /Na). The in situ‐formed electroactive metal–organic composites with tailored nanoarchitecture provide a promising alternative choice for high‐performance cathode materials in SIBs with high energy.