A Degradable and Biocompatible Supercapacitor Implant Based on Functional Sericin Hydrogel Electrode

Qiying Lv; Xiaoye Li; Xin Tian; Da‐an Fu; Huan Liu; Jia Liu; Yu Song; Bo Cai; Jian Wang; Qiangfei Su; Wei Chen; Meizhen Zou; Fei Xiao; Shuai Wang; Zheng Wang; Lin Wang

doi:10.1002/aenm.202203814

journal article·2023-04Open access

A Degradable and Biocompatible Supercapacitor Implant Based on Functional Sericin Hydrogel Electrode

Qiying Lv, Xiaoye Li, Xin Tian, Da‐an Fu, Huan Liu, Jia Liu, Yu Song, Bo Cai, Jian Wang, Qiangfei Su, Wei Chen, Meizhen Zou, Fei Xiao, Shuai Wang, Zheng Wang, Lin Wang

Advanced Energy Materials· Volume 13· Issue 16

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Source abstract

Abstract

Abstract Implantable power sources face great challenges in balancing multiple factors including high performance, biocompatibility, mechanical properties for soft tissue fit, and biodegradability. Toward this goal, a simple and feasible method is proposed to prepare implantable a hydrogel‐based supercapacitor (SC). Specially, a multinetwork conductive electrode is in situ formed by aminated‐reduced‐graphene‐oxide‐and‐methacrylic‐anhydride‐comodified sericin (SrMA/A‐rGO) sequentially cross‐linking with four‐arm polyethylene glycol succinimide carbonate and polyethylene glycol acrylate. The conductive multinetwork endows the SrMA/A‐rGO‐based SC implant an equivalent series resistance of 21 Ω cm⁻², a volumetric energy density of 26.0 µW cm⁻², and a high specific capacitance retention (over 76.4%) after long‐term charging/discharging. Two SCs connected in tandem are able to light up a light‐emitting diode for both in vitro and in vivo studies. Moreover, they can work as a direct output power source to electrically stimulate a stopped heart to start beating again. Additionally, the SC exhibits superior biocompatibility and biodegradability in vivo, and holds the value of specific capacitance above 30% 2 weeks after implantation. Thus, this work demonstrates the SrMA/A‐rGO‐based SC's potential to serve as a power storage unit for medical implants (such as a temporary pacemaker).

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Research context

Energy storage Polymers Nanomaterials Biomaterials

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Supercapacitor Materials and Fabrication · Neuroscience and Neural Engineering

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

Affiliations

Hubei Key Laboratory of Regenerative Medicine and Multidisciplinary Translational Research Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment Research Center for Tissue Engineering and Regenerative Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China

Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment Department of Clinical Laboratory Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China

Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

Department of Pharmacology School of Basic Medicine Tongji Medical College Hubei Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation Huazhong University of Science and Technology Wuhan 430030 P. R. China

Department of Gastrointestinal Surgery Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China

Funding

National Natural Science Foundation of China · Huazhong University of Science and Technology

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