Heteropoly acid negolytes for high-power-density aqueous redox flow batteries at low temperatures

High-capacity polysulfide–polyiodide nonaqueous redox flow batteries with a ceramic membrane

“…The full cell flow mode test of PS-PI achieves >300 hours stable cycling by using the self-made flow cell (Figure S9), which indicates the promising application of this system for large-scale energy storage. We also noticed that the capacity decay occurred in the cycling process, which can be ascribed to the formation of irreversible solid by-products (Li 2 S and I 2 ), volatilization of nonaqueous solvents and temperature fluctuation after longterm operation 59,60 Experimental Materials Lithium metal was received from China Energy Lithium Co., Ltd. Sulfur (S), lithium iodide (LiI) and lithium bis(trifluoromethane) -sulfonimide (LiTFSI) were received from Shanghai Aladdin Biochemical Technology Co., Ltd. Lithium sulfide (Li 2 S) was received from Shanghai Macklin Biochemical Co., Ltd. 1,3dioxolane (DOL) and 1,2-dimethoxyethane(DME)were received from Sigma-Aldrich. Carbon paper (HCP010N) was received from Shanghai Hesen Electric Co., Ltd. Celgard 2500 was received from Suzhou Sinerno Technology Co., Ltd.…”

A prototype of high-performance two-electron non-aqueous organic redox flow battery operated at −40 °C

“…−20 °C (Table S1 ‡). [26][27][28] However, a drawback of this aqueous battery system is the limited cell voltage due to the solvent (H 2 O electrochemical stability window is ∼1.23 V). Ma et al reported a porphyrin-based nonaqueous symmetric cell, which could cycle at −40 °C.…”

High-nuclear polyoxovanadates assembled from pentagonal building blocks

“…[1][2][3][4][5][6] The wide applications of POMs derive from the diversity of their structures and compositions. 7,8 Therefore, the design and development of novel molecular building blocks (MBBs) for the expansion of available topological structures remains an important research direction in POM chemistry. High-nuclear polyoxovanadates (POVs), as an essential branch of POMs, are still in their infancy, especially for the construction of complex high-nuclear POVs using the MBB strategy.…”