Carboxylic Acid‐Functionalized Cellulose Hydrogel Electrolyte for Dual‐Interface Stabilization in Aqueous Zinc‐Organic Batteries

IF 6.7 1区化学 Q1 CHEMISTRY, ANALYTICAL

Analytical Chemistry Pub Date : 2024-11-09 DOI:10.1002/adma.202411997

Haodong Zhang, Xiaotang Gan, Yingjie Gao, Hao Wu, Zhiping Song, Jinping Zhou

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引用次数: 0

Abstract

Aqueous zinc batteries (AZBs) are considered one of the most promising candidates for grid‐scale energy storage. However, achieving a stable electrode–electrolyte interface remains a challenge for developing high‐performance AZBs. Herein, taking the Zn||phenazine (PNZ) system as a prototype, where the proton uptake/removal mechanism dominates in the cathode, a carboxylic acid‐functionalized cellulose hydrogel electrolyte is designed to simultaneously solve the issues at both the anode and cathode interfaces. Specifically, the hydrogel electrolyte can not only regulate Zn2+ ions at the Zn anode side but also supply H+ ions at the PNZ cathode side to avoid the unfavored deposition of zinc sulfate hydroxides. Benefiting from the unique one‐gel‐for‐two‐electrodes strategy, the dendrite‐free and side reaction‐suppressed aqueous Zn||PNZ cells are developed with a high specific capacity (311 mAh g−1, 99% utilization of the theoretical capacity) and a long cycle life (over 1500 cycles within 2 months). This study proposes a facile and low‐cost electrolyte strategy for stabilizing AZBs.

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羧酸官能化纤维素水凝胶电解质在锌-有机水电池中的双界面稳定作用

锌水电池（AZBs）被认为是最有希望实现电网规模储能的候选电池之一。然而，实现稳定的电极-电解质界面仍是开发高性能 AZB 的一大挑战。本文以 Zn||吩嗪（PNZ）体系为原型，设计了一种羧酸官能化纤维素水凝胶电解质，以同时解决阳极和阴极界面的问题。具体来说，水凝胶电解质不仅能在锌阳极侧调节 Zn2+ 离子，还能在 PNZ 阴极侧提供 H+ 离子，以避免硫酸锌氢氧化物的不利沉积。得益于独特的 "一凝胶换两电极 "策略，开发出了无枝晶且副反应抑制的水性 Zn||PNZ 电池，具有高比容量（311 mAh g-1，理论容量的 99% 利用率）和长循环寿命（2 个月内循环超过 1500 次）。这项研究提出了一种简便、低成本的稳定 AZB 的电解质策略。

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来源期刊

Analytical Chemistry 化学-分析化学

CiteScore

12.10

自引率

12.20%

发文量

1949

审稿时长

1.4 months

期刊介绍： Analytical Chemistry, a peer-reviewed research journal, focuses on disseminating new and original knowledge across all branches of analytical chemistry. Fundamental articles may explore general principles of chemical measurement science and need not directly address existing or potential analytical methodology. They can be entirely theoretical or report experimental results. Contributions may cover various phases of analytical operations, including sampling, bioanalysis, electrochemistry, mass spectrometry, microscale and nanoscale systems, environmental analysis, separations, spectroscopy, chemical reactions and selectivity, instrumentation, imaging, surface analysis, and data processing. Papers discussing known analytical methods should present a significant, original application of the method, a notable improvement, or results on an important analyte.