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Second, there is a pronounced
hysteresis between charge and discharge, which increases
with x, during the voltage window-opening experiments. The difference
in the charge/discharge voltage at 50% state of charge during
the first 4.7¨C2.0 V cycle (after activation) of each cell, denoted V, is
provided in Figs. 4a¨C4d; it varies from 100 mV (x = 0) to 540 mV (x
= 0.5) even though a high capacity of ¡«230 mAh/g is achieved.
³ÙÖÍÏÖÏó£¨Hysteresis£©£¬»ò³ÆÖͺóÏÖÏó£¬Ö¸Ò»ÏµÍ³µÄ״̬(Ö÷Òª¶àΪÎïÀíϵͳ)£¬²»½öÓëµ±ÏÂϵͳµÄÊäÈëÓйأ¬¸ü»áÒòÆä¹ýÈ¥ÊäÈë¹ý³Ì֮·¾¶²»Í¬£¬¶øÓв»Í¬µÄ½á¹û¡£»»¾ä»°Ëµ£¬Ò»ÏµÍ³¾­¹ýijһÊäÈë·¾¶Ö®ÔË×÷ºó£¬¼´Ê¹»»»Ø×î³õµÄ״̬ʱͬÑùµÄÊäÈëÖµ£¬×´Ì¬Ò²²»Äܻص½Æä³õʼ¡£ÀýÈçÒ»¿éð¤ÍÁ·ÅÔÚÊÖÉÏ£¬Äóѹ֮ºó²»ÔÙÊ©Á¦£¬´ËʱÊÜÁ¦ÓëÏÈǰ·ÅÔÚÊÖÉÏ¿ÉÊÓΪÏàͬ£¬µ«ÊÇÈ´ÒѲ»ÊÇÏÈǰÐÎ̬ÁË£¬¶ø²»Í¬ÄóѹµÄ·½·¨£¬Ò²»áµÃµ½²»Í¬µÄÐÎ̬¡£ ³£¼ûµÄÎïÀí³ÙÖÍÈ磺´ÅÖÍÏÖÏó¡¢µç³ÙÖÍÏÖÏó¡¢µ¯ÐÔ³ÙÖÍ¡¢Òº¹ÌÏà±ä³ÙÖÍ¡¢½Ó´¥½Ç³ÙÖÍÏÖÏóµÈ¡£
´ËÎÄÖеijÙÖÍ£¨Hysteresis£©ÏÖÏó¸Ð¾õÏñÊǼ«»¯£¨polarization£©µÄÒâ˼¡£³ÙÖÍÓ¦¸ÃÊÇÀàËÆÏìÓ¦ÂäºóµÄÏÖÏ󣨲μûÎÐÂÖ³ÙÖÍЧӦ£©¡£ÕâÀïËùÖ¸µÄ³ÙÖͲ»ÊÇͨ¹ýÀàËÆ²âÊÔÏìӦʱ¼äËùµÃ¡£´ËÎÄÖв»Ì«Àí½â³ÙÖÍÓ뼫»¯µÄÇø±ð¡£Íû´óÅ£ÃÇÖ¸½Ì¡££¨Áí³ä·ÅµçÊÇÓÃGITT ·½·¨²âÊÔ£©¡£
²Î¿¼ÎÄÏ×£ºQuantifying Hysteresis and Voltage Fade in xLi2MnO3¡ñ(1-x)LiMn0.5Ni0.5O2 Electrodes as a Function of Li2MnO3 Content
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