Hierarchically designed 3D Cu3N@Ni3N porous nanorod arrays: An efficient and robust electrode for high-energy solid-state hybrid supercapacitors

Pragati A. Shinde, Sehong Park, Nilesh R. Chodankar, Sewon Park, Young Kyu Han, Abdul Ghani Olabi, Seong Chan Jun

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Transition metal nitrides have recently fascinated noteworthy research interest owing to their exclusive electronic structure with high electrical conductivity and their emerging application in energy storage and conversion devices. Herein, we have designed a freestanding Cu3N@Ni3N nanorod arrays (NRAs) integrated on copper foam (CF), which serves as an active electrode for hybrid supercapacitors (SCs). The three-dimensional (3D) nano-architecture of Cu3N@Ni3N/CF is extremely beneficial for SCs because it possesses improved electrical conductivity, numerous surface active sites, and abundant “superhighways” for charge transportation owing to the self-supported design of material and synergistic effect between each active component. As a consequence, Cu3N@Ni3N/CF electrode displays outstanding energy storage performance in terms of specific capacity (390.5 mA h g−1 (2.34 F cm−2) at 1 A g−1, cycling stability (94.9% retention over 10 000 cycles), and excellent rate capability. As-fabricated hybrid solid-state SC (HSSC) device with the Cu3N@Ni3N NRAs and activated carbon (AC) as positive and negative electrodes, respectively demonstrated a maximum specific energy of 71.8 Wh kg−1 at a specific power of 700 W kg−1 with good cycling stability over 10 000 cycles. Thus, the work signifies a scalable approach for the systematic design of electrode materials and devices for future energy storage applications.

Original languageEnglish
Article number100951
JournalApplied Materials Today
Publication statusPublished - 2021 Mar

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government ( MIST ) (No. NRF-2019R1A2C2090443 ) and Korea Electric Power Corporation (Grant number: R19XO01-23 ).

Publisher Copyright:
© 2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)


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