Liquid Phase‐Induced Solid Solution Phase Mechanisms for Highly Stable and Ultrafast Energy Storage

Huang, Meng; Zhu, Jiexin; Yu, Ruohan; Liu, Yu; Liu, Xiong; Wu, Jinsong; An, Qinyou; Mai, Liqiang

doi:10.1002/aenm.202102342

Cited by 12 publications

(5 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[96][97][98] Figure 4e shows that the initial discharge capacity of 549.5 mAh g −1 is delivered at 1 A g −1 in the first cy-cle, and 401.1 mAh g −1 of discharge capacity can be achieved after cycling for 650 cycles, presenting good cyclic stability of the I 2 @MBene-Br cathode within 0.4-2.1 V, which are mainly attributed to the strong adsorption of iodine species by the layered MBene-Br host with ordered metal vacancies and the high reversibility of Br − /Br 0 in the MBene-Br skeleton. [40] As illustrated in Figure 4f, the I 2 @MBene-Br cathode displays a recorded specific energy of 485.8 Wh kg −1 at the specific power of 899.7 W kg −1 and a recorded specific power of 6007.7 W kg −1 at the specific energy of 180.2 Wh kg −1 , superior to the state of the art of aqueous Zn||I 2 batteries [57,60,66,75,77,88,90,[99][100][101][102][103] and most aqueous Zn||PBA (Prussian Blue analogs), [104][105][106] Zn||V 2 O 5 , [107][108][109][110][111] Zn||MnO 2 [112] and Zn||organic [113] battery systems.…”

Section: Resultsmentioning

confidence: 99%

MBene with Redox‐Active Terminal Groups for an Energy‐Dense Cascade Aqueous Battery

Zhang,

Li,

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Two‐dimensional (2D) transition metal borides (MBenes), new members of the 2D materials family, hold great promise for use in the electrocatalytic and energy storage fields because of their high specific area, high chemical activity and fast charge carrier mobility. Although various types of MBenes have been reported, layered MBenes featuring redox‐active terminal groups for high energy output have not yet been produced. We present a facile and energy‐efficient method for synthesizing MBenes equipped with redox‐active terminal groups for cascade Zn||I2 batteries. Layered MBenes have ordered metal vacancies and –Br terminal groups, enabling the sequential reactions of I–/I0 and Br–/Br0. The I2‐hosting MBene‐Br cathode results in a specific energy as high as 485.8 Wh kg–1 at 899.7 W kg–1 and a specific power as high as 6007.7 W kg–1 at 180.2 Wh kg–1, far exceeding the best records for Zn||I2 batteries. The results of this study demonstrate that the challenges of MBene synthesis can be overcome and reveal an efficient path for producing high‐performance redox‐active electrode materials for energy‐dense cascade aqueous batteries.This article is protected by copyright. All rights reserved

show abstract

Section: Resultsmentioning

confidence: 99%

MBene with Redox‐Active Terminal Groups for an Energy‐Dense Cascade Aqueous Battery

Zhang,

Li,

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

“…In the charging process, [Fe(II)(CN) 6 ] 4+ in the KFeMnHCF skeleton was converted to [Fe(III)(CN) 6 ] 3+ with a larger radius, causing the lattice expansion, and vice versa [12b] . This reversible evolution means that the KZnHCF electrode underwent a solid‐solution ion (de)intercalation mechanism, [14b] which was also confirmed by X‐ray photoelectron spectroscopy (XPS) for the KFeMnHCF cathode after the 20 th cycle (Figure 3e–g). Until the battery was charged to 200 mAh g −1 (stage 3), the gradually increased peak of Cl 2p represents the Cl − intercalation (Figure 3e).…”

Section: Resultsmentioning

confidence: 99%

Anion–Cation Competition Chemistry for Comprehensive High‐Performance Prussian Blue Analogs Cathodes

Cui,

Zhu,

Lei

et al. 2024

Angewandte Chemie

View full text Add to dashboard Cite

The extensively studied Prussian blue analogs (PBAs) in various batteries are limited by their low discharge capacity, or subpar rate etc., which are solely reliant on the cation (de)intercalation mechanism. In contrast to the currently predominant focus on cations, we report the overlooked anion‐cation competition chemistry (Cl‐, K+, Zn2+) stimulated by high‐voltage scanning. With our designed anion‐cation combinations, the KFeMnHCF cathode battery delivers comprehensively superior discharge performance, including voltage plateau >2.0 V (vs. Zn/Zn2+), capacity >150 mAh g‐1, rate capability with capacity maintenance above 96% from 0.6 to 5 A g‐1, and cyclic stability exceeding 3000 cycles. We further verify that such comprehensive improvement of electrochemical performance utilizing anion‐cation competition chemistry is universal for different types of PBAs. Our work would pave a new and efficient road towards the next‐generation high‐performance PBAs cathode batteries.

show abstract

“…Impressively, the achieved energy density of the PBI//Zn battery surpasses the corresponding values of the PB//Zn batteries, carbon materials, and MOFs at all power rates. [26,41,42,44,[46][47][48][49][50][51][52][53]…”

Section: Resultsmentioning

confidence: 99%

Efficient Charge Storage in Zinc–Iodine Batteries based on Pre‐Embedded Iodine‐Ions with Reduced Electrochemical Reaction Barrier and Suppression of Polyiodide Self‐Shuttle Effect

Gao

Cheng

Zhang

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Aqueous zincIodine batteries are considered as a promising energy storage system due to their high energy/power density, and safety. However, polyiodide shuttling leads to severe active mass loss, which results in lower Coulombic efficiency and limits the cyclic life. Herein, a novel structurelimiting strategy to pre-embed iodide ions into Prussian blue (PBI) is proposed. The DFT calculations and electrochemical characterization reveal that the formation of FerrumIodine bond reduces the electrochemical reaction energy barrier of subsequent iodide-ions at the pre-embedding sites, improves the I − oxidation reaction kinetic process, and suppresses the polyiodide self-shuttle. The PBI//Zn batteries exhibit a low Tafel slope (155 mV dec −1 ). Moreover, UV-vis spectroscopy confirms that the proposed strategy suppresses the polyiodide self-shuttle. As a result, the PBI//Zn battery achieves high iodide utilization and Coulomb efficiency (242 mAh g −1 at 0.2 A g −1 , CEs ≈ 100%), as well as high multiplicity performance of 197.2 mAh g −1 even at 10 A g −1 (82% of initial capacity). The PBI//Zn battery also renders excellent cyclic stability with a capacity retention of 94% at 4 A g −1 after 1500 cycles. The device exhibits a high energy density of 142 W h kg −1 at a power density of 5538 W kg −1 .

show abstract

Liquid Phase‐Induced Solid Solution Phase Mechanisms for Highly Stable and Ultrafast Energy Storage

Cited by 12 publications

References 43 publications

MBene with Redox‐Active Terminal Groups for an Energy‐Dense Cascade Aqueous Battery

MBene with Redox‐Active Terminal Groups for an Energy‐Dense Cascade Aqueous Battery

Anion–Cation Competition Chemistry for Comprehensive High‐Performance Prussian Blue Analogs Cathodes

Efficient Charge Storage in Zinc–Iodine Batteries based on Pre‐Embedded Iodine‐Ions with Reduced Electrochemical Reaction Barrier and Suppression of Polyiodide Self‐Shuttle Effect

Contact Info

Product

Resources

About