Current Status and Challenges of Calcium Metal Batteries. Issue 3 (10th February 2022)

• Record Type: Journal Article
• Authors: Song, Huawei; Wang, Chengxin
• Is Part Of: Advanced energy & sustainability research. Volume 3:Issue 3(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-02-10
• Subjects: calcium metal batteries -- cathodes -- collectors -- electrolytes -- multivalent ions -- solid electrolyte interphases; Renewable energy sources -- Periodicals; Environmental sciences -- Periodicals; Sustainable development -- Periodicals; 621.042
• DOI: 10.1002/aesr.202100192
• Languages: English
• ISSNs: 2699-9412

Abstract

Abstract : Ca‐metal batteries, one of the promising advanced energy storage devices, have received significant development in the last few years. However, challenges still exist in efficient and cost‐effective Ca‐metal utilization, fast Ca‐ion transport and diffusion, and high energy density and stable‐cycling Ca‐storage. Herein, by cross‐checking most relevant literature reported previously, an intuitive depiction for state‐of‐the‐art Ca‐metal batteries, including collectors, electrolytes, and cathode materials, is presented from a voltage‐capacity‐efficiency's view, which facilitates reasonable comparisons from related fields. The performance of most cathode materials and calcium‐metal electrodes in various electrolytes reported previously is comprehensively reviewed, as well as interphases and collectors. The strong and weak points of various electrolytes are discussed, and relevant challenges are pointed out. Recent breakthroughs in electrolyte and interphase engineering are emphasized. Finally, potential development directions for Ca‐metal and electrolytes, as well as some future prospects for cathode materials, are rationally predicted. Abstract : Current status and challenges of Ca‐metal batteries (CMBs) including Ca‐metal anodes, collectors, electrolytes, interphases, and cathode materials are comprehensively reviewed. To facilitate comparisons, all the working voltages of cathode materials and Ca‐metal anodes involved are calibrated against standard hydrogen electrodes. The weak and strong points of electrolytes are analyzed. Breakthroughs from electrolyte and interphase engineering are especially emphasized.