Electrochemical performance of Klason lignin as a low-cost cathode-active material for primary lithium battery  

作　　者：Sergey V Gnedenkov Denis P Opra Ludmila A Zemnukhova Sergey L Sinebryukhov Iliya A Kedrinskii Olga V Patrusheva Valentin I Sergienko 

机构地区：[1]Institute of Chemistry,Far Eastern Branch,Russian Academy of Sciences [2]Far Eastern Federal University [3]Siberian State Technological University

出　　处：《Journal of Energy Chemistry》2015年第3期346-352,共7页能源化学（英文版）

基　　金：supported by the Russian Foundation for Basic Research (14-29-04072);supported by a research grant from the President of the Russian Federation for young scientists and graduate students (CP-2593.2013.1)

摘　　要：A few classes of organic compounds are promising electrode-active materials due to their high power and energy densities,low cost,environmental friendliness,and functionality.In the present work,the possibility of using Klason lignin extracted from buckwheat husks as a cathode-active material for a primary lithium battery has been investigated for the first time.The reaction mechanism in the lithium/lignin electrochemical cell was suggested based on the deep galvanostatic discharge（up to 0.005 V） data and cyclic voltammetry results.The dependence of the electrochemical behavior of the Klason lignin on the milling degree was evaluated.The maximum specific capacity of the lignin is equal to 600 m Ah g-1at a discharge current density of 75 μA cm-2.Beneficial effect of the thermal treatment of the Klason lignin cathode at250°C on the cell performance was established.It was found that the discharge capacity of the cell increased by 30% in the range from 3.3 to0.9 V for the treated cathode material.These results demonstrate the prospects of using Klason lignin-based electrochemical cells as low-rate primary power sources.A few classes of organic compounds are promising electrode-active materials due to their high power and energy densities,low cost,environmental friendliness,and functionality.In the present work,the possibility of using Klason lignin extracted from buckwheat husks as a cathode-active material for a primary lithium battery has been investigated for the first time.The reaction mechanism in the lithium/lignin electrochemical cell was suggested based on the deep galvanostatic discharge（up to 0.005 V） data and cyclic voltammetry results.The dependence of the electrochemical behavior of the Klason lignin on the milling degree was evaluated.The maximum specific capacity of the lignin is equal to 600 m Ah g-1at a discharge current density of 75 μA cm-2.Beneficial effect of the thermal treatment of the Klason lignin cathode at250°C on the cell performance was established.It was found that the discharge capacity of the cell increased by 30% in the range from 3.3 to0.9 V for the treated cathode material.These results demonstrate the prospects of using Klason lignin-based electrochemical cells as low-rate primary power sources.

关 键 词：Klason lignin primary lithium battery organic electrode buckwheat husks 

分 类 号：TM912[电气工程—电力电子与电力传动] O646[理学—物理化学]