Page 206 - 《精细化工》2023年第4期
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g892g ㏳ࡃጒ FINE CHEMICALS す 40 ࢤ
ϻ C 1s 䅞͚ࣾ⣝喑ധ⩢㼐⋟͚ᓗ⣜⮱ LNMO ᓗ⣜ݺ䨯䉌Ხ㶕䲏ٶ⏾Ƞۭȡౕധ⩢㼐⋟͚ᓗ
⩢Ხᷭ≸ݝ⮱ CÿF হ CÿC Ԏत䒰ᑞ喠㔹 O 1s 䅞 ⣜ 300 ⁎ऻ䨯䉌Ხ㶕䲏ᰶᬻ᭫⮱㷯㏦ȡ㔹ౕक़ 0.3%
͚喑ౕധ⩢㼐⋟͚ᓗ⣜ऻ⮱ LNMO ⩢Ხ㶕䲏ᷭ≸ MFS ⩢㼐⋟͚ᓗ⣜ऻ喑䨯㶕䲏䒰Ꭰ᪡Ƞ㜡ჳ喑́ EDS
2+
ݝ⮱ CÿO হ C==O ⮱ምᑧᏓ℁ౕक़ MFS ⌨ߍݯ⮱ 㐀᭫喑㶕䲏ႅౕ䩮ٰ㉍ȡ䔆᭜ͧ喑Mg ̻䛾
⩢㼐⋟͚ᰡᑧ喑㶕ᬻ LNMO ౕധ⩢㼐⋟͚ᓗ⣜ᬣ ᆋ䨯ࣺᏁज㜗ࣾ⩌ϟ㘯䨯-䩮व䛾喑ើݣ䨯ᮣ⮱
⩢㼐⋟ܳ㼐͒䛺喑ܳ㼐ϔ➖㺳Ⰳౕ⩢Ხ㶕䲏ȡౕ F 1s ⩌䪬 [11,19] ȡ
䅞 ͚݆ࣾ ⣝喑 Li x PO y F z ౕ ധ⩢ 㼐⋟ ͚ᓗ⣜ ⮱ 䕇䓴 XPS ≸䄂ᓗ⣜ 300 ⁎ऻ䨯䉌Ხ⮱⩹䲏ܳ喑
LNMO ⩢Ხ㶕䲏ᷭ≸ݝ⮱Ԏतምᑧλक़ MFS ⌨ߍ 㐀ຯఫ 8a~e ȡౕധ⩢㼐⋟͚ᓗ⣜ 300 ⁎ऻ
ݯ⮱⩢㼐⋟喑䔆ں⁎䄡ᬻ MFS ⌨ߍݯᰶ᩵ౝើݣγ ⮱䨯䉌Ხ㶕䲏ᷭ≸ݝ⮱ CÿOȠC==OȠLi x PO y F z হ㖇
⩢㼐⋟⮱ܳ㼐ȡ㔹 S 2p 䅞͚喑गౕक़ MFS ⌨ߍݯ⮱ ⷠ䚥䚜ምᑧ倅λक़ MFS ⩢㼐⋟喑㶕ᬻ䨯䉌Ხౕ̻ധ
⩢㼐⋟͚ᓗ⣜⮱ LNMO ⩢Ხ㶕䲏ᷭ≸ݝ ROSO 2 Li喍R ⩢㼐⋟ᓗ⣜ᬣ⮱Ⱕ䬡⽠Ⴧᕔᒵጛ喑⩢㼐⋟ܳ㼐ᗲ
䕇፥ͧ CȠH喎হ Li 2 Sȡ⩞ₑ䃮ᬻ喑MFS ⌨ߍݯ࣯ ۢ͒䛺ȡगᰶౕक़ MFS ⌨ߍݯ⮱⩢㼐⋟͚ᓗ⣜⮱䨯
–
̻γₐᲮ⩢㼐⋟⩹䲏㛉⮱ᒏ喑⽠Ⴧγ⩢Ხ/⩢㼐⋟ 䉌Ხ㶕䲏ᷭ≸ݝÿSO 2 ȠÿSO 3 হ Li-Mg ም喑㶕ᬻ
⩹䲏喑ϻ㔹倅γ⩢⮱⩢ࡃ႓ᕔ㘪 [18] ȡ MFS ౕ䨯䉌Ხ㶕䲏ܳ㼐喑࣯̻γ䉌Ხ⩢㼐⋟⩹䲏㛉
ఫ 7a~c ౕͧധ⩢㼐⋟হक़ 0.3% MFS ⩢㼐⋟ ⮱ᒏ喑ϻ㔹倅γ⩹䲏ᕔ䉕喑ᰶ᩵ើݣγ⩢㼐⋟
͚ᓗ⣜ 300 ⁎ݺऻ䨯䉌Ხ㶕䲏⮱ SEM ఫȡजВⰸܧ喑 ⮱ܳ㼐 [20] ȡ
ఫ 7 䨯⩢Ხᓗ⣜ݺ喍a喎Ƞౕധ⩢㼐⋟喍b喎হक़ 0.3% MFS ⩢㼐⋟喍c喎ᓗ⣜ 300 ⁎ऻ⮱ SEM ఫ喍ఫͧ EDS ܳᲽ喎
Fig. 7 SEM images of Li electrode before cycling (a) and in base (b) and 0.3% MFS-containing electrolytes (c) after
300 cycles (Insert is EDS)
ఫ 8 䨯䉌⩢Ხౕധ⩢㼐⋟হक़ 0.3% MFS ⩢㼐⋟͚ᓗ⣜ 300 ⁎ऻ⮱ XPS 䅞ఫ喟C 1s喍a喎ȠO 1s喍b喎ȠF 1s喍c喎Ƞ
S 2p喍d喎হ Mg 1s喍e喎
Fig. 8 XPS spectra of Li electrode in base and 0.3% MFS-containing electrolytes after 300 cycles: C 1s (a), O 1s (b), F 1s (c),
S 2p (d) and Mg 1s (e)
