An aqueous rechargeable dual-ion hybrid battery based on Zn//LiTi2(PO4)3electrodes

Zishuai Zhang, Yu Zhou, Qiang Ru, Ching Yuan Su, Linfeng Sun, Xianhua Hou, Fuming Chen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Aqueous rechargeable lithium ion batteries (ARLIBs) have attracted wide attention in the energy storage field due to their nontoxicity and high safety. Nevertheless, they face many challenges relating to capacity and stability due to the restricted selection of anode materials that can act within the narrow stable potential window of water. Herein, we developed a highly reversible Zn//LiTi2(PO4)3@C dual-ion hybrid battery, where the LiTi2(PO4)3@C material was synthesizedviaa facile sol-gel method and used as the cathode. A Zn sheet was chosen as the anode, and a solution consisting of 0.5 M ZnSO4and 0.25 M Li2SO4was the electrolyte. This aqueous rechargeable dual-ion hybrid battery exhibited stable cycling performance and excellent rate performance. After 500 cycles at a high current density of 12C (1C = 138 mA g−1), the reversible discharge capacity was 49 mA h g−1, not much less than the initial capacity. In a rate test, the discharge capacity rebounded to a value of 60 mA h g−1when the current density was returned from 18C back to 12C after 10 cycles. This battery system may provide great insight into designing dual-ion hybrid battery systems with high rate performances.

Original languageEnglish
Pages (from-to)2448-2452
Number of pages5
JournalSustainable Energy and Fuels
Volume4
Issue number5
DOIs
StatePublished - May 2020

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