Abstract
Anions serve as an essential component of electrolytes, whose effects have long been ignored. However, since the 2010s, we have seen a considerable increase of anion chemistry research in a range of energy storage devices, and it is now understood that anions can be well tuned to effectively improve the electrochemical performance of such devices in many aspects. In this Review, we discuss the roles of anion chemistry across various energy storage devices and clarify the correlations between anion properties and their performance indexes. We highlight the effects of anions on surface and interface chemistry, mass transfer kinetics and solvation sheath structure. Finally, we conclude with a perspective on the challenges and opportunities of anion chemistry for enhancing specific capacity, output voltage, cycling stability and anti-self-discharge ability of energy storage devices. [Figure not available: see fulltext.].
| Original language | English |
|---|---|
| Pages (from-to) | 616-631 |
| Number of pages | 16 |
| Journal | Nature Reviews Chemistry |
| Volume | 7 |
| Issue number | 9 |
| Early online date | 14 Jun 2023 |
| DOIs | |
| Publication status | Published - Sept 2023 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2023, Springer Nature Limited.
Funding
This work was supported by the InnoHK Project (Project 1.3 — Flexible and Stretchable Technologies (FAST) for monitoring of CVD risk factors: sensing and applications and Project 1.4 — Flexible and Stretchable Technologies (FAST) for monitoring of CVD risk factors: soft battery and self-powered, flexible medical devices) at the Hong Kong Centre for Cerebro-cardiovascular Health Engineering (COCHE). X.J. thanks the US National Science Foundation for the financial support with the award no. DMR 2221645.