DataVXACS Energy LettersPaper
journal article·2022-05-13Open access

Recovery of Salinity Gradient Energy with an Inorganic Sodium Superionic Conductor

Guodong Zhou, Ying Mei, Yuhao Wang, Shenghua Zhou, Md Raziun Bin Mamtaz, Chuyang Y. Tang, Francesco Ciucci

ACS Energy Letters· Volume 7· Issue 5
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Abstract

Solid inorganic electrolytes (SIEs) are promising materials for ion exchange membranes used in reverse electrodialysis (RED) processes to produce clean energy. However, SIEs have not yet been used in RED. Herein, Mg-substituted Na3Zr2Si2PO12 (NZMSP), an inorganic sodium superionic conductor, is used for the first time as a single-ion conducting ion exchange membrane in RED. The bilayer freestanding NZMSP membranes feature a sub-10-μm dense layer, delivering ultrahigh permselectivity (nearing 100%) and low resistance, along with improved power density compared to commercial cation exchange membranes. This work reports a new method to prepare high-performance SIE-based membranes. The enhanced power generation and permselectivity using this SIE membrane present a milestone in the field and will inspire further investigations.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Membrane-based Ion Separation Techniques · Advanced Battery Materials and Technologies · Fuel Cells and Related Materials

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

Affiliations

Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR 999077, China

Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR 999077, China

Research and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519000, China

Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR 999077, China

HKUST Fok Ying Tung Research Institute, Guangzhou 510000, China

HKUST Energy Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR 999077, China

HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Shenzhen 518000, China

Funding

Research Grants Council, University Grants Committee · University Grants Committee

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