A Renewable Sedimentary Slurry Battery: Preliminary Study in Zinc Electrodes.

Yue Liu,Wenjie Peng,Xinhai Li,Jing Zhong,Huajun Guo,Qiyang Hu,Guochun Yan,Zhixing Wang,Jiexi Wang

doi:10.1016/j.isci.2020.101821

Yue Liu, Wenjie Peng + Show 7 more

Open Access

https://doi.org/10.1016/j.isci.2020.101821

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Journal: iScience	Publication Date: Nov 19, 2020
Citations: 7	License type: cc-by

Affiliation: Central South University

Abstract

SummaryLow-cost, scalable energy storage is the key to continuing growth of renewable energy technologies. Here a battery with sedimentary slurry electrode (SSE) is proposed. Through the conversion of discrete particles between sedimentary and suspending types, it not only inherits the advantages of semi-solid flow cell but also exhibits high energy density and stable conductive network. Given an example, the zinc SSE (ZSSE) delivers a large discharge capacity of 479.2 mAh g−1 at 10 mA cm−2. More importantly, by renewal of the slurry per 20 cycles, it can run for 112 and 75 cycles before falling below 80% of designed capacity under 10 mA cm−2 (20% DODZn) and 25 mA cm−2 (25% DODZn), respectively. The lost capacity after cycles is able to recover after slurry renewal and the end-of-life SSE can be easily reused by re-formation. The concept of SSE brands a new way for electrochemical energy storage.

Highlights

Sustainable energy sources are urgently needed owing to the environmental pollution caused by fossil fuel consumption and ecological damage (Dunn et al, 2011; Leng et al, 2019)
Low-cost, scalable energy storage is the key to continuing growth of renewable energy technologies
The lost capacity after cycles is able to recover after slurry renewal and the end-oflife sedimentary slurry electrode (SSE) can be reused by re-formation

Summary

Introduction

Sustainable energy sources are urgently needed owing to the environmental pollution caused by fossil fuel consumption and ecological damage (Dunn et al, 2011; Leng et al, 2019). Benefitting from the remarkable merits of flowability of active material, redox flow batteries realize rapid charging by updating the electrolyte and decoupling of power unit and energy unit (Ding et al, 2018; Li et al, 2015a; Luo et al, 2019; Pan and Wang 2015; Wang et al, 2013; Zhou et al, 2019) It has been widely used in the large-scale stationary energy storage applications (Ke et al, 2018; Wei et al, 2016; Yuan et al, 2019). The SSFC needs a proper solid content to reach a balance between high energy density, acceptable conductivity, and low viscosity (Akuzum et al, 2020)

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