DataVXAdvanced Energy MaterialsPaper
journal article·2021-09

Aqueous Formate‐Based Li‐CO2 Battery with Low Charge Overpotential and High Working Voltage

Hairong Xue, Hao Gong, Xueyi Lu, Bin Gao, Tao Wang, Jianping He, Yusuke Yamauchi, Takayoshi Sasaki, Renzhi Ma

Advanced Energy Materials· Volume 11· Issue 35
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Source abstract

Abstract

Abstract Li‐CO2 batteries (LCOBs) are considered to be an important strategy toward efficient carbon sequestration and energy storage. However, most typical discharge products (Li2CO3 and C) are insoluble and chemically stable, and require a high charge overpotential (≈3.5–4.5 V) to be decomposed. Herein, a novel aqueous LCOB with formic acid (HCOOH) as the discharge product is proposed. The soluble HCOOH can be directly utilized in the charge process without any further purification or compression, realizing a very facile electrochemical cycle. Nanoporous Pd films with a high electrochemical surface area exhibit a high bifunctional performance toward both CO2 reduction and formic acid oxidation. Accordingly, the assembled LCOB achieves a high working potential plateau of 2.61 V whereas the charge potential is significantly lowered to 2.87 V, delivering the highest energy efficiency of 91%. The present work demonstrates a brand‐new aqueous LCOB with HCOOH as the discharge product for utilizing CO2 as power source.
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Research context

Energy storageNanomaterials

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced battery technologies research

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

Affiliations

International Center for Materials Nanoarchitectonics (WPI‐MANA) National Institute for Materials Science (NIMS) 1‐1 Namiki Tsukuba Ibaraki 305‐0044 Japan

Department of Chemistry and Materials Science College of Science Nanjing Forestry University Nanjing 210037 P. R. China

College of Materials Science and Technology Jiangsu Key Laboratory of Materials and Technology for Energy Conversion Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China

School of Chemical Engineering & Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia

JST‐ERATO Yamauchi Materials Space‐Tectonics Project National Institute for Materials Science (NIMS) 1‐1 Namiki Tsukuba Ibaraki 305‐0044 Japan

Funding

Natural Science Foundation of Jiangsu Province · China Postdoctoral Science Foundation · Exploratory Research for Advanced Technology · Priority Academic Program Development of Jiangsu Higher Education Institutions · China Scholarship Council

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