Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
LiDFOB Initiated In Situ Polymerization of Novel Eutectic Solution Enables Room‐Temperature Solid Lithium Metal Batteries
Advanced Science ( IF 14.3 ) Pub Date : 2020-11-03 , DOI: 10.1002/advs.202003370 Han Wu 1, 2 , Ben Tang 1 , Xiaofan Du 1 , Jianjun Zhang 1 , Xinrun Yu 1 , Yantao Wang 1 , Jun Ma 1 , Qian Zhou 1 , Jingwen Zhao 1 , Shanmu Dong 1 , Gaojie Xu 1 , Jinning Zhang 1 , Hai Xu 2 , Guanglei Cui 1 , Liquan Chen 3
Advanced Science ( IF 14.3 ) Pub Date : 2020-11-03 , DOI: 10.1002/advs.202003370 Han Wu 1, 2 , Ben Tang 1 , Xiaofan Du 1 , Jianjun Zhang 1 , Xinrun Yu 1 , Yantao Wang 1 , Jun Ma 1 , Qian Zhou 1 , Jingwen Zhao 1 , Shanmu Dong 1 , Gaojie Xu 1 , Jinning Zhang 1 , Hai Xu 2 , Guanglei Cui 1 , Liquan Chen 3
Affiliation
|
It is demonstrated that a novel eutectic solution including 1,3,5‐trioxane (TXE) and succinonitrile (SN) can be converted into solid‐state polymer electrolyte (SPE) via in situ polymerization triggered by lithium difluoro(oxalato)borate (LiDFOB). It is worth noting that all the precursors (LiDFOB, TXE, and SN) of this novel SPE are totally solid and nonvolatile at room temperature, where, LiDFOB works as a lithium salt and an initiator simultaneously to avoid the introduction of impurity. It is noted that such SPE presents a considerable ionic conductivity of 1.14 × 10−4 S cm−1 and a sufficiently wide electrochemical window of 4.5 V, which is significant for supporting the high‐energy lithium batteries. In addition, this dedicatedly designed in situ polymerization is powerful to build kinetically favorable polymer‐based protective layers on LiCoO2 cathode and Li metal anode simultaneously, guaranteeing outstanding cycling stability (capacity retention of 88% after 200 cycles) of 4.3 V LiCoO2/lithium metal batteries at room temperature. More intriguingly, soft packed LiCoO2/SPE/Li metal batteries can still light a blue light emitting diode (LED) under the harsh conditions of being bent, cut, and stroked by a hammer, demonstrating excellent safety characteristics.
中文翻译：
LiDFOB引发新型共晶溶液的原位聚合使室温固态锂金属电池成为可能
研究表明，一种包含1,3,5-三恶烷（TXE）和丁二腈（SN）的新型共晶溶液可以通过二氟（草酸）硼酸锂（LiDFOB）引发的原位聚合转化为固态聚合物电解质（SPE） ）。值得注意的是，这种新型SPE的所有前驱体（LiDFOB、TXE和SN）在室温下都是完全固态且不挥发的，其中LiDFOB同时充当锂盐和引发剂，以避免引入杂质。值得注意的是，这种SPE具有1.14 × 10 -4 S cm -1的相当大的离子电导率和4.5 V的足够宽的电化学窗口，这对于支持高能锂电池具有重要意义。此外，这种专门设计的原位聚合能够同时在LiCoO 2正极和锂金属负极上构建动力学上有利的聚合物保护层，保证4.3 V LiCoO 2 /出色的循环稳定性（200次循环后容量保持率为88%）。室温下的锂金属电池。更有趣的是，软包装LiCoO 2 /SPE/Li金属电池在弯曲、切割和锤子敲击的恶劣条件下仍然可以点亮蓝色发光二极管（LED），表现出优异的安全特性。
更新日期：2020-12-03
中文翻译：
LiDFOB引发新型共晶溶液的原位聚合使室温固态锂金属电池成为可能
研究表明，一种包含1,3,5-三恶烷（TXE）和丁二腈（SN）的新型共晶溶液可以通过二氟（草酸）硼酸锂（LiDFOB）引发的原位聚合转化为固态聚合物电解质（SPE） ）。值得注意的是，这种新型SPE的所有前驱体（LiDFOB、TXE和SN）在室温下都是完全固态且不挥发的，其中LiDFOB同时充当锂盐和引发剂，以避免引入杂质。值得注意的是，这种SPE具有1.14 × 10 -4 S cm -1的相当大的离子电导率和4.5 V的足够宽的电化学窗口，这对于支持高能锂电池具有重要意义。此外，这种专门设计的原位聚合能够同时在LiCoO 2正极和锂金属负极上构建动力学上有利的聚合物保护层，保证4.3 V LiCoO 2 /出色的循环稳定性（200次循环后容量保持率为88%）。室温下的锂金属电池。更有趣的是，软包装LiCoO 2 /SPE/Li金属电池在弯曲、切割和锤子敲击的恶劣条件下仍然可以点亮蓝色发光二极管（LED），表现出优异的安全特性。
京公网安备 11010802027423号