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A new ternary SnO2–Co–C composite has been synthesized by facile and scalable ball milling, which demonstrates a high initial coulombic efficiency (ICE, with average of 80.8%), high reversible specific capacity and a long lifetime (610 mA h g−1 after 1000 cycles at 2 A g−1).

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ambient temperature inevitably, [4][5][6][7] which build up a significant obstacle to the fast charging of LIBs at low temperatures. In addition, the potential polarization caused by the increased internal resistance at subzero temperature can easily reach the lithium plating during charging for the graphite anode with low operating potential, resulting in small charging capacity, inability to charge and even safety hazards. [8] For the latter, the awkward cycling ability of the anode at elevated temperature is mainly due to the increased instability of the electrolyte, in which the in situ-formed SEI is unable to avoid the oxidative decomposition of the electrolyte at a high potential, resulting in unstable electrode cycling and abnormal consumption of electrolyte. Therefore, to achieve a superior operation at a wide temperature, the electrode material in LIBs needs to have decent Li + conductivity at sub-zero temperature and have stable SEI with fast Li + transport at elevated temperature.Recently, extensive efforts have been committed to promote the low-temperature Li storage capability of the anode materials, including alloying-type Sn-Cu and Sn-C, [9] conversion-type metal oxides, such as V 2 O 5 , [10] Co 3 O 4 , [11] CoFe 2 O 4 , [12] MnO, [13] and metal sulfide MnS. [14] It has been shown that all these anode materials can discharge the LIBs successfully from subzero temperature to −25 °C, however, they cannot maintain cycle stability at high temperatures. At the same time, the reversible capacity of the alloy anodes yielded at low-temperature (≈200 mA h g −1 ) is far below their theoretical capacity. Recently, we have found that the SnO 2 anode can deliver stable and high capacity at subzero temperature. [15] In a commercial propylene carbonate (PC) based electrolyte, throughout 100 cycles at −20 °C, 71% of its 30 °C capacity comes from the moderate operating temperature. It is very significant that the polymorphic transformation of β-Sn to α-Sn at temperature below 13 °C is helpful to build faster transport channels for Li + during de-/ lithiation because the diffusion barrier of Li atoms in the α-Sn is lower than that in the β-Sn. [16][17][18] These show that the SnO 2based anode materials can be excellent candidates for low temperature LIBs.However, there are still great challenges for wide temperature application of SnO 2 -based anode materials. First, pure SnO 2 electrode suffers from inferior cycling stability and reversibility of conversion reaction at room temperature and above Lithium-ion batteries (LIBs) suffer dramatic energy reduction, and are even unable to safely charge below -10 °C, due to sluggish Li + transport kinetics in the anode, electrolyte and solid electrolyte interphase (SEI), as well as large overpotential which causes Li plating on the anode surface. Herein, a SnO 2 -LiF-graphite (SLG) composite anode is developed for wide temperature application. The SLG with a propylene carbonate electrolyte delivers a stable capacity of more than 900 mA h g -1 at 60 °C with 100 mA g -1 , mai...