Page 203 - 《精细化工》2023年第4期

す 4 ᱌ ᅦ֟ⶂ喑ぶ: ̶⅌⩟⸧䚥䩮⩢㼐⋟⌨ߍݯᄦ倅ࢸ䨯⻨ၽ⩢↍⮱ᒞ৺ g889g

ᄦ⽠Ⴧȡ䔆ᒵज㘪᭜ MFS ౕ⩢Ხ̷ᒏ᜽⮱Ԋ៑ᅯᰶ
᩵ౝើݣγ⩢㼐䉕⮱ܳ㼐ȡ

ఫ 1 ധ⵭⩢㼐⋟̻क़ MFS ⩢㼐⋟⮱ LSV喍a喎হ CV喍b喎
ᰟ㏬
Fig. 1 LSV (a) and CV (b) curves of base electrolyte and
MFS-containing electrolyte

ຯఫ 1a ᝭⹧喑क़ 0.3% MFS ⩢㼐⋟⮱⅔ࡃ⩢≮
ܧ⣝⮱⩢Ѻѻλധ⵭⩢㼐⋟喑䄡ᬻ MFS ⅔ࡃ≨ᕔ䒰
倅喑хٵλ⏣ݯܳၽࣾ⩌⅔ࡃࣺᏁȡ
ຯఫ 1b ᝭⹧喑ౕ 4.0 V ጓठᬣܧ⣝̭ᄦ⅔ࡃ䔅࣌
4+
3+
ም喑ᄦᏁλ Mn /Mn ⮱ࣺᏁȡౕ 4.5~4.9 V ͸䬡ᰶ
3+
3+
4+
2+
̭ᄦ⅔ࡃ䔅࣌ም喑ᄦᏁ Ni /Ni হ Ni /Ni ⮱ࣺᏁȡ
̻ധ⵭⩢㼐⋟̺ह⮱᭜喑ౕक़ MFS ⩢㼐⋟͚जВ㻯
ᄌݝ̭͗ 4.2 V ጓठ⮱䷊ใ⅔ࡃም喑ᄦᏁλ MFS ⮱
⩢ࡃ႓⅔ࡃԎतȡ
ఫ 2a ͧ Li/LNMO ⩢↍ౕധ⵭⩢㼐⋟হक़ MFS
⩢㼐⋟͚⮱ᓗ⣜ᕔ㘪ȡजВⰸܧ喑ധ⵭⩢㼐⋟㏼䓴
300 ⁎⮱ٲᩫ⩢ᓗ⣜ऻ⩢↍ᩫ⩢℁ღ䛼ࣾ⩌͒䛺㶝
ۼ喑ϻ݊໸ᩫ⩢℁ღ䛼⮱ 132.28 mA·h/g 䭺ѻ㜠
77.19 mA·h/g喑ღ䛼Ԋᠮ⢴ϲͧ 58.35%ȡMFS ⌨ߍ
䛼ͧ 0.1%⮱⩢㼐⋟ज㘪̺䋠Вౕ LNMO 㶕䲏ᒏ᜽
㜡ჳ⮱⩹䲏㛉喑ᄦ⩢↍ᓗ⣜⽠Ⴧᕔ⮱᣽倅̺์⤳ᘠ喠
MFS ⌨ߍ䛼ͧ 0.5%⮱⩢㼐⋟͚喑⩢↍ᩫ⩢℁ღ䛼ۼ
ᄼ喑⩢↍㘪䛼ჳᏓ䭺ѻ喠MFS ⌨ߍ䛼ͧ 0.3%⮱⩢㼐
⋟͚喑⩢↍㶕⣝ܧᰡ倅⮱ᓗ⣜⽠Ⴧᕔ喑㏼䓴 300 ⁎
ᓗ⣜ऻ喑⩢↍⮱ᩫ⩢℁ღ䛼ϻ 135.12 mA·h/g 䭺㜠
123.86 mA·h/g喑ღ䛼Ԋᠮ⢴ͧ 91.67%喑̻ധ⵭⩢㼐
⋟Ⱕ℁᣽倅 33.32%ȡఫ 2b ౕͧक़হ̺क़ MFS ⌨ߍ
ݯ⩢㼐⋟͚ Li/LNMO ⩢↍⮱ᏀϾ᩵⢴喑जВࣾ⣝喑
⌨ߍ MFS ⮱⩢㼐⋟͚⩢↍仃వᏀϾ᩵⢴ѻλധ⵭
⩢㼐⋟ȡڣ࣌఍ज㘪᭜⌨ߍݯ MFS ࣾ⩌γ⅔ࡃࣺᏁ
᝭㜡 [14] ȡ఍ₑ喑ౕऻ㐚჋侹͚喑В MFS ⌨ߍ䛼ͧ
0.3%҉ͧᰭх᲎У䔈㵹ⵁ⾣ȡ
ఫ 2 ౕक़হ̺क़ MFS ⌨ߍݯ⩢㼐⋟͚ Li/LNMO ⩢↍⮱
Li/LMNO ⩢↍ౕധ⵭⩢㼐⋟̻क़ 0.3% MFS ⩢㼐 ᓗ⣜ᕔ㘪喍a喎হᏀϾ᩵⢴喍b喎喑̺क़喍c喎হक़ 0.3%
⋟͚̺हᓗ⣜వ᪝⮱ٲᩫ⩢ᰟ㏬ຯఫ 2c হ d ᝭⹧ȡ MFS喍d喎⩢㼐⋟͚ Li/LNMO ⩢↍ٲᩫ⩢ᰟ㏬
जВⰸܧ喑䮼Ɑᓗ⣜⁎᪝⮱෋ߍ喑⩢↍ౕധ⵭⩢㼐 Fig. 2 Cyclic performances (a) and coulombic efficiencies
(b) of Li/LNMO cells in electrolytes with and without
⋟͚ٲ⩢Ꭰझ䔽⌽̷ࡴ喑ᩫ⩢Ꭰझ䔽⌽̸䭺ȡ䔆䄡
MFS, charge/discharge curves of Li/LNMO cells in
ᬻധ⵭⩢㼐⋟Ҭ⩢↍ౕᓗ⣜䓴⼸͚ϔ⩌γ͒䛺⮱Ხ electrolytes without (c) and with 0.3% MFS (d)
ࡃ喑䔆ज㘪᭜⩞λ⩢Ხ/⩢㼐⋟䬡⩹䲏̺⽠Ⴧ䕍᜽
⮱ȡ㔹ౕक़ 0.3% MFS ⩢㼐⋟͚⩢↍ٲᩫ⩢ᎠझⰥ ఫ 3a ͧ Li/LNMO ⩢↍ౕധ⵭⩢㼐⋟হक़ 0.3%