DataVXAdvanced MaterialsPaper
journal article·2017-10

Highly Concentrated, Ultrathin Nickel Hydroxide Nanosheet Ink for Wearable Energy Storage Devices

Peipei Shi, Rong Chen, Li Hua, Li Li, Ruyi Chen, Yujiao Gong, Chenyang Yu, Jinyuan Zhou, Bin Liu, Gengzhi Sun, Wei Huang

Advanced Materials· Volume 29· Issue 40
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Source abstract

Abstract

Abstract Solution‐based techniques are considered as a promising strategy for scalable fabrication of flexible electronics owing to their low‐cost and high processing speed. The key to the success of these techniques is dominated by the ink formulation of active nanomaterials. This work successfully prepares a highly concentrated two dimensional (2D) crystal ink comprised of ultrathin nickel hydroxide (Ni(OH)2) nanosheets with an average lateral size of 34 nm. The maximum concentration of Ni(OH)2 nanosheets in water without adding any additives reaches as high as 50 mg mL−1, which can be printed on arbitrary substrates to form Ni(OH)2 thin films. As a proof‐of‐concept application, Ni(OH)2 nanosheet ink is coated on commercialized carbon fiber yarns to fabricate wearable energy storage devices. The thus‐fabricated hybrid supercapacitors exhibit excellent flexibility with a capacitance retention of 96% after 5000 bending–unbending cycles, and good weavability with a high volumetric capacitance of 36.3 F cm−3 at a current density of 0.4 A cm−3, and an energy density of 11.3 mWh cm−3 at a power density of 0.3 W cm−3. As a demonstration of practical application, a red light emitting diode can be lighted up by three hybrid devices connected in series.
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Research context

Energy storageNanomaterials

OpenAlex topics: Supercapacitor Materials and Fabrication · Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 P. R. China

School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive Singapore 637459 Singapore

School of Physical Science and Technology Lanzhou University Lanzhou Gansu 730000 P. R. China

Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road Nanjing 210023 P. R. China

Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 P. R. China

Funding

Nanjing Tech University · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China · Ministry of Education - Singapore

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