Construction of Rich Conductive Pathways from Bottom to Top: A Highly Efficient Charge‐Transfer System Used in Durable Li/Na‐Ion Batteries at −20 °C

Abstract

The construction of potential electrode materials with wide temperature propertyf or high-energy-density secondary batteries has attracted great interest in recent years. Herein, ah ybrid electrode, consisting of an itrogen-doped

Lithium-ion batteries for low-temperature applications: Limiting factors and solutions

“…Therefore, recent works focused on improving the pseudocapacitive properties of anode materials by controlling the morphology or surface defects and introducing the additional surface-controlled energy storage mechanism [45,73,81]. Such pseudocapacitive behavior can significantly improve the lithium storage capacity, cycling stability, and rate capability of anode materials at low temperatures [45,76,80]. Furthermore, control of the morphology and structure is admitted to comprehensively address the main LT limitations of the anode materials by affecting the conductivity of electrons, pathlength of the Li + , and contact area of the electrode with electrolyte, thus number of electrochemically active sites [28,57,58,63,64,68].…”

LiF‐Induced Stable Solid Electrolyte Interphase for a Wide Temperature SnO2‐Based Anode Extensible to −50 °C

“…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.…”