TY - JOUR
T1 - Single-Ion-Functionalized Nanocellulose Membranes Enable Lean-Electrolyte and Deeply Cycled Aqueous Zinc-Metal Batteries
AU - Ge, Xuesong
AU - Zhang, Weihua
AU - Song, Fuchen
AU - Xie, Bin
AU - Li, Jiedong
AU - Wang, Jinzhi
AU - Wang, Xiaojun
AU - Zhao, Jingwen
AU - Cui, Guanglei
N1 - Funding Information:
X.G. and W.Z. contributed equally to this work. The authors acknowledge the financial support from the National Key R&D Program of China (Grant No. 2017YFE0127600), the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA21070304), the National Natural Science Foundation of China (Grant Nos. U1706229 and 21975271), the Major basic research projects of Shandong Natural Science Foundation (No. ZR2020ZD07), the Shandong Energy Institute (Grant No. SEI I202127), and the Youth Innovation Promotion Association of CAS (No. 2019214).
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/6/24
Y1 - 2022/6/24
N2 - Aqueous cells with zinc-metal anodes featuring safety and low cost, are beneficial for diversifying energy-storage technologies, while their energy density and cyclability have been long limited by side-reactions and dendrite issues, especially at the practical device level. Though sustained efforts are underway to renovate electrodes and electrolytes, the roles of other indispensable components, such as separators, in the cell operation have been not fully unexplored thus far. Here, it is demonstrated that both the reversibility and utilization of aqueous zinc anodes can be improved by using a single-ion Zn2+-conducting nanocellulose membrane as the separator. Even without any treatments to the electrodes and thereof interfaces, this functional membrane marked by synergetic optimization on key required properties regarding mechanical strength, preferred Zn2+ conduction and hydrophilicity, mitigates H2 evolution, corrosion, and dendrite growth on zinc anodes, thus enabling >80% depth-of-discharge stable cycling under practically feasible lean electrolyte (electrolyte-to-capacity ratio = 1.0 g Ah−1) and high areal capacity (8.0 mAh cm−2) conditions. These findings translate to an excellent capacity retention of exceeding 95% after 150 cycles for full cells with practically high-loading cathodes (17 mg cm−2). This work provides a simple yet practical avenue to high-energy, long-cycling aqueous zinc-metal batteries.
AB - Aqueous cells with zinc-metal anodes featuring safety and low cost, are beneficial for diversifying energy-storage technologies, while their energy density and cyclability have been long limited by side-reactions and dendrite issues, especially at the practical device level. Though sustained efforts are underway to renovate electrodes and electrolytes, the roles of other indispensable components, such as separators, in the cell operation have been not fully unexplored thus far. Here, it is demonstrated that both the reversibility and utilization of aqueous zinc anodes can be improved by using a single-ion Zn2+-conducting nanocellulose membrane as the separator. Even without any treatments to the electrodes and thereof interfaces, this functional membrane marked by synergetic optimization on key required properties regarding mechanical strength, preferred Zn2+ conduction and hydrophilicity, mitigates H2 evolution, corrosion, and dendrite growth on zinc anodes, thus enabling >80% depth-of-discharge stable cycling under practically feasible lean electrolyte (electrolyte-to-capacity ratio = 1.0 g Ah−1) and high areal capacity (8.0 mAh cm−2) conditions. These findings translate to an excellent capacity retention of exceeding 95% after 150 cycles for full cells with practically high-loading cathodes (17 mg cm−2). This work provides a simple yet practical avenue to high-energy, long-cycling aqueous zinc-metal batteries.
KW - depth-of-discharge
KW - lean electrolytes
KW - nanocellulose
KW - separator
KW - single ion conductors
KW - zinc batteries
UR - http://www.scopus.com/inward/record.url?scp=85127227818&partnerID=8YFLogxK
U2 - 10.1002/adfm.202200429
DO - 10.1002/adfm.202200429
M3 - Article
AN - SCOPUS:85127227818
SN - 1616-301X
VL - 32
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 26
M1 - 2200429
ER -