Rib-like hierarchical porous carbon as reservoir for long-life and high-rate Li-Te batteries

被引：32

作者：

Li, Yi ^{[1
,2
]}

Hu, Linyu ^{[1
,2
]}

Shen, Bolei ^{[1
,2
]}

Dai, Chunlong ^{[1
,2
]}

Xu, Qiuju ^{[1
,2
]}

Liu, Dingyu ^{[1
,2
]}

Jiang, Jian ^{[1
,2
]}

Li, Yan ^{[3
]}

Xu, Maowen ^{[1
,2
]}

机构：

[1] Southwest Univ, Inst Clean Energy & Adv Mat, Fac Mat & Energy, Chongqing 400715, Peoples R China

[2] Chongqing Key Lab Adv Mat & Technol Clean Energie, Chongqing 400715, Peoples R China

[3] Beijing Inst Petrochem Technol, Coll Mat Sci & Engn, Beijing 102617, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2017年 / 250卷

基金：

美国国家科学基金会; 北京市自然科学基金;

关键词：

porous carbon; biochar; lithium-tellurium batteries; LITHIUM-SULFUR BATTERIES; ANODE MATERIALS; ION BATTERIES; HIGH-POROSITY; S BATTERIES; PERFORMANCE; CAPACITY; NANOPARTICLES; NANOWIRES; CATHODES;

D O I：

10.1016/j.electacta.2017.07.124

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Lithium-Tellurium (Li-Te) batteries are regarded as a prospective candidate for novel electrochemical energy-storage technologies on account of their inundatory advantages in superior volume capacity density and excellent electrochemical stability. Finding accommodation material of Te is the key issue for Li-Te batteries. Here, rib-like hierarchical porous carbon (RHPC) derived from lotus seedpod as host for tellurium is synthesized by facile hydrothermal-pyrolyzation method. Benefiting from the effective accommodation of RHPC reservoir, together with the preeminent electronic conductivity of Te, this unique RHPC/Te electrode is able to deliver a reversible capacity of 288 mA h g(-1) (1797 mA h cm(-3)) at 2C and keep stability for a ultra-long cycling number as long as 3600 cycles, and could undergo a high current density of 10C and get capacity of 196 mA h g(-1) (1223 mA h cm(-3)), showing especially excellent performance for Li-Te batteries. We believe that the RHPC/Te electrode will exert great influence in Li-Te batteries. (C) 2017 Published by Elsevier Ltd.

引用

页码：10 / 15

页数：6

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