Electrolyte Solvation Manipulation Enables Unprecedented Room-Temperature Calcium-Metal Batteries.

Angew Chem Int Ed Engl

Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, 230026, P. R. China.

Published: July 2020

Calcium-metal batteries (CMBs) provide a promising option for high-energy and cost-effective energy-storage technology beyond the current state-of-the-art lithium-ion batteries. Nevertheless, the development of room-temperature CMBs is significantly impeded by the poor reversibility and short lifespan of the calcium-metal anode. A solvation manipulation strategy is reported to improve the plating/stripping reversibility of calcium-metal anodes by enhancing the desolvation kinetics of calcium ions in the electrolyte. The introduction of lithium salt changes the electrolyte structure considerably by reducing coordination number of calcium ions in the first solvation shell. As a result, an unprecedented Coulombic efficiency of up to 99.1 % is achieved for galvanostatic plating/stripping of the calcium-metal anode, accompanied by a very stable long-term cycling performance over 200 cycles at room temperature. This work may open up new opportunities for development of practical CMBs.

Download full-text PDF

Source
http://dx.doi.org/10.1002/anie.202002274DOI Listing

Publication Analysis

Top Keywords

solvation manipulation
8
calcium-metal batteries
8
calcium-metal anode
8
calcium ions
8
calcium-metal
5
electrolyte solvation
4
manipulation enables
4
enables unprecedented
4
unprecedented room-temperature
4
room-temperature calcium-metal
4

Similar Publications

Covalent-Organic-Framework Enabled Efficient Three-dimensional K-storage via Electrolyte Solvation Manipulation.

ACS Appl Mater Interfaces

December 2024

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

Covalent-organic-framework (COF) materials with a designable periodic framework have been expected as a kind of promising anode material for potassium ion batteries (PIBs). However, these materials suffer seriously from low capacity, poor rate performance, and slow reaction kinetics during the K-storage process, significantly limiting their widespread applications. Herein, a three-dimensional (3D) COF material denoted as CN-COF with a high N content and defined configuration as well as a graphite-like layer stacking structure was developed as a promising anode to realize efficient 3D K-storage performance with enhanced interfacial stability and reaction kinetics via an electrolyte chemistry compatibility strategy.

View Article and Find Full Text PDF

Latent Solvent-Induced Inorganic-Rich Interfacial Chemistry to Achieve Stable Potassium-Ion Batteries in Low-Concentration Electrolyte.

Angew Chem Int Ed Engl

December 2024

State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China.

Article Synopsis
  • - *Low-concentration electrolytes (LCEs) are gaining popularity for being cost-effective and having low viscosity, but they face challenges like poor stability and undesirable chemistry at the interface.* - *A new solvent called 1,2-dibutoxyethane (DBE) helps create a stronger, inorganic-rich interface in a 0.5 M electrolyte, which improves the speed of ion movement and stabilizes the electrolyte.* - *This improved electrolyte leads to potassium-ion batteries (PIBs) showing excellent performance, with 80.3% capacity retention after 300 cycles and a high discharge capacity of 131.3 mAh g-1 at a fast rate.*
View Article and Find Full Text PDF

Zn flux regulator to modulate the interface chemistry toward highly reversible Zn anode.

J Colloid Interface Sci

November 2024

State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China.

Article Synopsis
  • The study addresses challenges in aqueous Zn-ion batteries (AZIBs) caused by low coulombic efficiency and Zn dendrite formation, which limit their lifespan and use.
  • A new additive, 2-amino-5-guanidino-pentanoic acid (AGPA), is introduced as a zinc flux regulator to enhance the performance and durability of Zn anodes by creating a protective adsorption layer.
  • The use of AGPA helps achieve a significant improvement in cycle life, allowing Zn//Zn cells to last 5500 hours and full batteries to sustain 6000 cycles at high currents, thus supporting the potential commercialization of AZIBs.
View Article and Find Full Text PDF

Manipulating Aggregate Electrochemistry for High-Performance Organic Redox Flow Batteries.

Angew Chem Int Ed Engl

November 2024

Guangdong Provincial Key Laboratory of Fuel Cell Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, P.R. China.

Organic molecule in solutions is the energy storage unit in the organic redox flow batteries (ORFBs), of which the aggregation is acknowledged pivotal but has been rarely investigated. By establishing a pyridinium library, the manipulation over the aggregation in solutions is investigated at the molecular level. Both theoretical calculations and physiochemical methods are used to characterize the aggregate's structure, and salient findings are as follows.

View Article and Find Full Text PDF

Anion Receptor-manipulated solvation chemistry and electric double layer enables high Zn-Utilization rate and lean Zn metal batteries.

J Colloid Interface Sci

February 2025

Jilin Provincial Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China. Electronic address:

The practical application of aqueous Zn metal batteries (AZMBs) is impeded by inferior reversibility and stability of Zn metal anode (ZMA) originated from side reactions and dendrite growth. Herein, anion receptor l-Proline (LP) is selected to simultaneously manipulate solvation chemistry and electric double layer (EDL) for constructing dendrite-free and stable AZMBs with an ultra-high depth of discharge (DOD of 100 %) and low negative/positive capacity ratio (N/P of 1.1).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!