Volume 46, Issue 10 pp. 14227-14239
RESEARCH ARTICLE

Multiple structural defects in poor crystalline nickel-doped tungsten disulfide nanorods remarkably enhance supercapacitive performance

Yedluri Anil Kumar

Yedluri Anil Kumar

Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul, Republic of Korea

Department of Mechanical Engineering, Faculty of Engineering, Center for Nanofibres and Nanotechnology, National University of Singapore, Singapore, Singapore

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Bandar Ali Al-Asbahi

Bandar Ali Al-Asbahi

Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabia

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Mohan Reddy Pallavolu

Corresponding Author

Mohan Reddy Pallavolu

School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea

Correspondence

Mohan Reddy Pallavolu, School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.

Email: [email protected]

Seeram Ramakrishna, Center for Nanofibres and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117576, Singapore.

Email: [email protected]

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Sunkara Srinivasa Rao

Sunkara Srinivasa Rao

Department of Mechatronics Engineering, Kyungsung University, Busan, South Korea

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Ramesh Reddy Nallapureddy

Ramesh Reddy Nallapureddy

School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea

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Seeram Ramakrishna

Corresponding Author

Seeram Ramakrishna

Department of Mechanical Engineering, Faculty of Engineering, Center for Nanofibres and Nanotechnology, National University of Singapore, Singapore, Singapore

Correspondence

Mohan Reddy Pallavolu, School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.

Email: [email protected]

Seeram Ramakrishna, Center for Nanofibres and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117576, Singapore.

Email: [email protected]

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First published: 20 May 2022
Citations: 38

Funding information: Researchers Supporting Project Number (RSP-2021/348), King Saud University, Riyadh, Saudi Arabia., Grant/Award Number: RSP-2021/348

Summary

Tailoring the multiple structure defects of nanomaterials by developing efficient construction is a captivating approach to designing unique electroactive materials for supercapacitors with performance improvement. Here, we in situ synthesize Ni-doped tungsten disulfide nanorod arrays on nickel foam (Ni-doped WS2/NF NRs) by a hydrothermal technique procedure. These multiple structural defects in poor crystalline Ni-doped WS2/NF NRs construction configuration by abundant interconnected nanorods would reveal plentiful oxidational/redox-active states that supply porous/conductive skeletons for quick electrolyte/ion electrons transportations. Favoring its doped conductive effect and synergetic structure of multiple-like Ni-doped on WS2, the as-designed Ni-doped WS2/NF NRs electrode exhibits a high specific capacity of 242.9 mAh g−1 at 1 A g−1, outstanding cycling stability of 6000 long cycles with capacity retention79.8% at 20 A g−1, which is higher than that of binary WS2 electrode. This outstanding performance arises from enhanced conductivity and richer active sites in the multiple structural electroactive materials. This research offers an efficient treatment to explore multiple structural morphologies and architectures of energy storage applications.

CONFLICT OF INTEREST

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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