journal article·2025-07-08

Reconstructed Wood Carbon Aerogel with Single-Atom Sites for Flexible Zn–Air Batteries

Zehong Chen, Linxin Zhong, Zhongxin Chen, Hao Zhuo, Xuan Zhao, Haihong Lai, Tingzhen Li, Wu Yang, Zhaoqing Liu, Hao Zhang, Emmanuel Iwuoha, Kasim Ocakoglu, Xinwen Peng

ACS Nano· Volume 19· Issue 26
Publisher page

Abstract

Single-atom catalysts (SACs) have become vital air cathodes for metal–air batteries, but fabricating monolithic SACs with high catalytic activity and mechanical strength is currently lacking. Herein, an all-natural wood carbon aerogel with single-atom sites is reconstructed via modulating the multi-interactions within lignocellulosic components. Cellulose nanofiber (CNF) constitutes an oriented scaffold via physical interweaving and strong electrostatic repulsion, while lignosulfonate, acting as a multifunctional bioligand, coordinates with metal ions and forms hydrogen bonds with CNF to prevent the agglomeration of adjacent metal atoms. The resulting carbon aerogel features a biomimetic channel-ordered microstructure with M–N 4 active sites (M = Cu, Fe, and Co), leading to outstanding mechanical elasticity and oxygen reduction and evolution activities with a half-wave potential of 0.881 V. Therefore, the SA-Cu@NCA-based aqueous Zn–air battery (ZAB) exhibits a high specific capacity of 779.3 mA h g –1 and long-term stability, while the flexible ZAB with SA-Cu@NCA as an integrated cathode delivers a high specific capacity and impressive operating stability even under harsh structural deformations. This study presents a viable approach for the sustainable production of flexible SACs for wearable and portable electronics.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Supercapacitor Materials and Fabrication · Electrocatalysts for Energy Conversion · Lignin and Wood Chemistry

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

Affiliations

School of Light Industry and Engineering, State Key Laboratory of Advanced Papermaking and Paper-based Materials

South China University of Technology

School of Science and Engineering

The Chinese University of Hong Kong

Department of Mechanical Engineering, National University of Singapore, 3 Engineering Drive 2, 117576, Singapore

School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center

Guangzhou University

Department of Chemical Engineering

Massachusetts Institute of Technology

SensorLab (UWC Sensor Laboratories), Department of Chemistry

University of the Western Cape

Department of Engineering Fundamental Sciences, Faculty of Engineering

Tarsus University

Funding

Key Technologies Research and Development Program of Guangzhou Municipality · National Key Research and Development Program of China · Basic and Applied Basic Research Foundation of Guangdong Province · State Key Laboratory of Pulp and Paper Engineering · National Natural Science Foundation of China · Guangzhou Basic and Applied Basic Research Foundation

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