Ꮫ 㝔 ⏕ 㸸Ώ㑓㍜㸪ᩧ⸨┿⏤㸪ㅖᝆ㔛Ꮚ㸪Ώ㒊ࡉࡸ
≉ู◊✲⏕㸸Duhamel, Charles Franck
Ꮫ 㒊 Ꮫ ⏕ 㸸▼ᶫᑗே, ᑎᓮ㔛Ꮚ㸪㉺㔝㝧ஓ㸪Ỉᓥ㈼ே
ᮏ◊✲ศ㔝࡛ࡣ㸪2018ᖺ4᭶ᕤᏛ㒊3ᖺࡢ㉺㔝ྩ㸪Ỉᓥྩࢆࠊ10᭶≉ู◊✲⏕ࡢCharlesྩ
ࢆ᪂ࡓ࣓ࣥࣂ࣮㏄࠼ࡓࠋᮏ◊✲ᐊ࡛ࡣ㸪ᇶᖿ࢚ࢿࣝࢠ࣮ࡋ࡚ཎᏊຊࡢ⏝㛵ࡍࡿࣉࣟ
ࢭࢫᏛࡢᇶ┙◊✲ࢆᒎ㛤ࡋ࡚࠸ࡿࡀࠊ2011ᖺ3᭶11᪥ࡢᮾ᪥ᮏ㟈⅏ࡼࡿ⚟ᓥ➨୍ཎⓎᨾ
ࡢᑐᛂࡶྵࡵ࡚άືࡋ࡚࠸ࡿࠋᖺᗘࡣࠊཎⓎࢧࢺෆ࠾ࡅࡿ⇞ᩱࢹࣈࣜࡢ≧ែホ౯ࡸฎ
⌮ࣉࣟࢭࢫࡢ◊✲ࢆ⾜࠺ࡶࠊࢧࢺእ࠾ࡅࡿᨺᑕᛶ≀㉁ࡢᣲືホ౯ࡸࠊ⎔ቃಟᨭ
άືࡶᐇࡋࡓࠋࡲࡓ㸪࣓ࣞࢱࣝࢢ࣮ࣜࣥࣀ࣮࣋ࢩࣙࣥ◊✲㛤ⓎᣐⅬࡢ࣓ࣞࢱࣝྵ᭷ᨺᑕ
≀㉁ྲྀᢅ◊✲タࢆ⏝ࡋ࡚ᨺᑕᛶ࣓ࣞࢱࣝ㈨※ࡢࣉࣟࢭࢫ㛤Ⓨࢆ⾜ࡗࡓࠋ 2018ᖺࡢ◊✲άືࡋ࡚ࡣ㸪௨ୗࡢࡼ࠺ᴫᣓࡉࢀࡿࠋ
䠍䠊䜰䜽䝏䝜䜲䝗Ꮫ䛻㛵䛩䜛ᇶ♏◊✲
ࢡࢳࣀࢻඖ⣲ࡢྜᡂࠊᵓ㐀࡞ࡢᅛయࡸࠊ⁐ゎᗘࠊ㘒య⏕ᡂ࠸ࡗࡓ⁐ᾮᏛ㛵ࡍࡿ
ᇶ♏◊✲ࢆ⾜ࡗ࡚࠸ࡿࠋࢡࢳࣀࢻྜ≀ࡢྜᡂἲࢆ㛤Ⓨࡋࠊࡑࡢ≀⌮Ꮫⓗ࡞ᛶ㉁ࢆㄪ
ࡿ࡚࠸ࡿࡀࠊ(III)㹼(VI)ࡢ౯ᩘࡢ␗࡞ࡿ࢘ࣛࣥࡢྜ≀㸦㓟≀ࡸࣁࣟࢤࣥ≀ࠊ◲ ≀ ࠊ㓑 㓟 ሷ ࠊ Ⅳ㓟 ሷ ࡞ 㸧 ࡘ࠸ ࡚ ࠊSpring-8ࠊKEK࡛XAFS ᐃ ࢆ ⾜ ࠸ ࠊ⣔ ⤫ⓗ ࡞ ࢹ ࣮ࢱ ࢆ ྲྀᚓ ࡋ
࡚ ࡁ ࡚ ࠸ࡿ ࠋ ࡲࡓ ࠊ ࢘ࣛࣥ ᗫ Რ ≀ࡢ ฎ ศ ࠾ ࠸࡚ホ ౯ ࡀ ᚲせ ࡞ࡿPaࡘ࠸ ࡚ ࡣ ࠊᇶ ♏ ≀⌮
Ꮫ ≉ ᛶࡀ ࢇ ▱ࡽࢀ ࡚ ࠸ ࡞࠸ ࡇ ࡽ ࠊ࣐ࢡ ࣟ 㔞 ࡢPa-231ࢆ ⏝ ࠸࡚⁐ ᾮ Ꮫ◊ ✲ ࢆᒎ 㛤 ࡋ ࡚ ࠸ࡿ ࠋ ᮏᖺ ᗘ ࡣᖺ ᗘ ᘬࡁ ⥆ ࡁࠊ ⁐ ፹ᢳฟ ἲ ࡼࡾPaࢆ⢭ 〇 ࡋࠊග ྾ ࢫ࣌ ࢡ ࢺࣝ
ࡢ ᐃ ࡽ ሷ ≀ ࢜ࣥࡸ ࣇ ࢵ ≀ ࢜ࣥ ࡢ㘒⏕ ᡂ ᐃ ᩘࢆ ホ ౯ࡋ ࡓ ࠋ ࡲࡓᮏᖺᗘࡣPa(V)ࡢ 㐣ሷ⣲㓟⁐ᾮࡢ࣐ࣛࣥࢫ࣌ࢡࢺࣝ ᐃࢆヨࡳࡓࠋࡉࡽࠊNp-237ࡽ⁐፹ᢳฟࡼࡾPa-233ࢺ
࣮ࣞࢧࢆ࣑ࣝ࢟ࣥࢢࡋࠊࡇࢀࢆ⏝࠸࡚ຍỈศゎᛂࡢホ౯ࢆ⾜ࡗ࡚࠸ࡿࠋ
䠎䠊⚟ᓥཎⓎᨾ䛷Ⓨ⏕䛧䛯ᗫᲠ≀䛾ฎ⌮䞉ฎศ䛻㛵䛩䜛◊✲
㔜ᨾࢆ㉳ࡇࡋࡓ⚟ᓥ➨୍ཎⓎࡢᗫ⅔㈨ࡍࡿᇶ♏◊✲ࡋ࡚ࠊཎᏊ⅔ෆⓎ⏕ࡋࡓ⇞ᩱ
ࢹࣈࣜࡢฎ⌮࣭ฎศࣉࣟࢭࢫཬࡧởᰁỈฎ⌮࡛Ⓨ⏕ࡋࡓࢮ࢜ࣛࢺ྾╔ᗫᲠ≀ࡢฎ⌮ἲࢆ᳨
ウࡋ࡚࠸ࡿࠋලయⓗࡣࠊࢹࣈࣜࡢ≧ែホ౯ࡋ࡚ࠊ㧗 ࡘ㓟ࡲࡓࡣ㑏ඖ㞺ᅖẼ࡛⇞ᩱ≀
㉁⿕そ⟶ࡢᛂࡼࡾ⏕ᡂࡋࡓUO2-ZrO2ΰྜ≀ࡢ┦㛵ಀࢆㄪࡓࠋࡉࡽࡣࠊUO2㕲㗰
ࡸไᚚᮦࠊࢥࣥࢡ࣮ࣜࢺࡢᛂᛶࠊ⇞ᩱࢹࣈࣜࡢᙧ≧ࠊ⤌ᡂホ౯ࢆ⾜ࡗࡓࠋࡲࡓࠊởᰁỈฎ
⌮ ࡢ 㔜 せ ᰾ ✀ ࡞ ࡿ ᰾ศ ⏕ ᡂ ≀(FP)ࡸ ࣐ ࢼ ࣮ ࢡ ࢳ ࣀ ࢻ(MA)ࡢ ࢺ ࣞ ࣮ ࢧ ࢆ ῧ ຍ ࡋ ࡓ ᶍᨃ⇞ᩱࢹࣈࣜࢆ⏝࠸࡚ྛ᰾✀ࡢᾏỈࡸ⣧Ỉࡢ⁐ฟᣲືࢆㄪࡓࠋࡉࡽࠊ✌ാࡋࡓி
⅔࡚ᶍᨃࢹࣈࣜࡢ୰ᛶᏊ↷ᑕࡼࡾFPࢆ⏕ᡂࡉࡏ⁐ゎᣲືࢆㄪࡓࠋ⇞ᩱࢹࣈࣜࡼࡾởᰁ ࡉࢀࡓ⎰♟➼ࢆฎศࡍࡿࡓࡵࡢ᪂ࡓ࡞ᗫᲠయฎ⌮ἲࡢ᳨ウࡋ࡚ࠊUO2ཬࡧU3O8ࢆࢮ࢜ࣛ
ࢺࡸ࢝࢜ࣜࣥ࠸ࡗࡓ࠸ࡃࡘࡢ࣑ࣝࡢࢣ㓟ሷ㖔≀ࢆᅛࡋ࡚⏝࠸࡚↝⤖ᅛࢆヨࡳ
ࡓࠋฎศ࠾ࡅࡿᏛⓗᏳᐃᛶࡘ࠸࡚ホ౯ࢆ⾜ࡗࡓࠋ
䠏䠊ᘧ䝥䝻䝉䝇䛻㛵䛩䜛◊✲
ཎᏊຊⓎ㟁㛤Ⓨ࠾ࡅࡿ㍍Ỉ⅔㸪㠉᪂⅔㸪㧗㏿⅔ࢧࢡࣝࡢࣇࣞ࢟ࢩࣅࣜࢸࢆ᭷ࡋ㸪
ࡘ᰾ᣑᩓᢠᛶ㸪ᗫᲠ≀పῶᑐᛂࡋ࠺ࡿฎ⌮ἲࡸᗫᲠ≀ฎ⌮ἲࡋ࡚㸪ࣁࣟࢤࣥࡸ㓟≀
ࢆ⏝࠸ࡿᘧࣉࣟࢭࢫࡢ◊✲ࢆ㐍ࡵ࡚࠸ࡿࠋᖺᗘࡣࠊ࢞ࣛࢫᅛ࠾ࡅࡿࣔࣜࣈࢹࣥ㓟ࢆ⏝
࠸ࡓฎ⌮ࣉࣟࢭࢫ㛵ࡋ࡚ࠊ㓟≀⼥య୰࡛ࡢ࢘ࣛࣥࡸFPඖ⣲ࡢ⁐ゎࡸศ㞳ᣲືࡘ࠸࡚XRD ᐃࡸࠊ⇕㔜㔞ศᯒࠊศගศᯒࡼࡾホ౯ࡋࡓࠋࡲࡓ㸪ࣇࢵ≀Ⓨࣉࣟࢭࢫ࠾ࡅࡿNbࡸSbࠊ MoࠊTe➼ࡢFPඖ⣲ࡢࣇࢵᣲືࡘ࠸࡚ࣇࢵ⣲㞺ᅖẼୗࡢTG-DTAࡼࡾホ౯ࡍࡿࠊࣇࢵ
≀⁐ ⼥ሷ ࢆ⏝ ࠸ࡿ ฎ⌮ ࣉࣟࢭ ࢫ ࡘ࠸ ࡚UO2-ZrO2ᶍ ᨃࢹ ࣈࣜ ࡢLiF-KF-NaF⁐ ⼥ሷ ࡢ ⁐ゎ ᛶࡸศ㞳≉ᛶࡘ࠸᳨࡚ウࡋࡓࠋ
㻌
䠐䠊᰾✀䛾ᆅ୰⛣⾜䛻ཬ䜌䛩ᆅୗỈྵ᭷ᡂศ䛾ᙳ㡪䛾ホ౯
㧗ࣞ࣋ࣝᨺᑕᛶᗫᲠ≀ࡸTRUࢆྵࡴᗫᲠ≀ࡢᆅᒙฎศࡢᏳホ౯࠾࠸࡚ࡣ㸪㐲࠸ᑗ᮶㸪㛗
༙ῶᮇࡢᨺᑕᛶ᰾✀ࡀ࢞ࣛࢫᅛయࡽ⁐ฟࡋ㸪ᆅୗỈࢆ፹యࡋ࡚⏕ែᅪ⛣⾜ࡍࡿࣉࣟࢭ ࢫࡢホ౯ࡀ㔜せ࡞ࡿ㸬ᮏ◊✲࡛ࡣ㸪ᆅୗỈྵࡲࢀࡿ↓ᶵሷ㢮㸦Ⅳ㓟࢜ࣥࠊࣜࣥ㓟࢜ࣥࠊ Ỉ㓟≀ࢥࣟࢻ➼㸧ࡸ᭷ᶵ≀㸦ᚤ⏕≀ࠊ⭉㣗≀㉁➼㸧ࡀᗫᲠ≀ྵࡲࢀࡿᨺᑕᛶ᰾✀ࡢ
ࡼ࠺┦స⏝ࡋࠊᆅୗ⎔ቃ࡛ࡢ᰾✀⛣⾜ᙳ㡪ࡋ࠺ࡿࢆホ౯ࡋ࡚࠸ࡿࠋᮏᖺᗘࡣᐇ㦂ᐊ࡛
ࡢᐇ㦂ຍ࠼ࠊࣇ࣮ࣝࢻ࣮࣡ࢡࡋ࡚ࠊᾏ㐨ᖠᘏࡢJAEAᖠᘏ῝ᆅᒙ◊✲ࢭࣥࢱ࣮ࡢᆅୗ
タࡼࡾ᥇ྲྀࡋࡓࠊ῝㒊ᆅୗỈᨺᑕᛶ᰾✀ࡢࢼࣟࢢඖ⣲ࡋ࡚ࣛࣥࢱࣀࢻඖ⣲ࢆῧຍࡋࠊ ῧຍඖ⣲ᆅୗỈྵ᭷ᡂศࡢ┦స⏝ࢆICP-MSࡸTOF-SIMS➼ࢆ㥑ࡋ࡚ㄪࡓࠋ
䠑䠊⏝῭⇞ᩱ┤᥋ฎศࡢࡓࡵࡢᇶ♏◊✲
ཎᏊຊ⏝࠾ࡅࡿࢩࢫࢸ࣒ࡢᰂ㌾ᛶࢆ☜ಖࡋࡘࡘᚋࡢࣂࢵࢡ࢚ࣥࢻᑐ⟇ࢆ╔ᐇ㐍ࡵ࡚
࠸ࡃࡓࡵࡣࠊࡇࢀࡲ࡛✚ࡉࢀ࡚ࡁࡓ࢞ࣛࢫᅛయࡢฎศ㛵ࡍࡿᢏ⾡ⓗ▱ぢຍ࠼ࠊ௦
᭰ฎศ࢜ࣉࢩࣙࣥ㛵ࡍࡿᢏ⾡ⓗ࡞ㄪᰝ᳨࣭ウࢆ⾜ࡗ࡚࠾ࡃࡇࡀᚲせ࡛࠶ࡿࠋࡑࡇ࡛ᮏ◊✲
࡛ࡣࠊฎ⌮ࢆ⾜ࡗ࡚࠸࡞࠸⏝῭᰾⇞ᩱࢆ┤᥋ᆅᒙฎศࡍࡿࠊ࠸ࢃࡺࡿ┤᥋ฎศ࢜ࣉࢩࣙࣥ
ࡢᡃࡀᅜ࡛ࡢᡂ❧ᛶࢆホ౯ࡍࡿࡓࡵࡢ୍⎔࡞ࡿᇶ♏◊✲ࢆ㐍ࡵ࡚࠸ࡿࠋලయⓗࡣࢃࡀᅜ
࠾ࡅࡿ⏝῭⇞ᩱ┤᥋ฎศࡢᏳホ౯ࡢࡓࡵࡢ⇞ᩱ⁐ゎ㏿ᗘࢆタᐃࡍࡿࡇࢆ┠ⓗࡋ࡚㸪㑏 ඖ᮲௳ୗ࡛ࡢ㓟࢘ࣛࣥࡢ⁐ゎ㏿ᗘཬࡰࡍⅣ㓟࢜ࣥ⃰ᗘࡢᙳ㡪ࡢホ౯ࢆᐇ㦂ࡼࡾ ᐃ ࡋ࡚࠸ࡿࠋᮏᖺᗘࡢᡂᯝࡼࡾ㑏ඖࡢ㑅ᢥࡸぢࡅࡢU⁐ゎᗘࡢホ౯᪉ἲ࡞ࡀ☜❧ࡉࢀࡓࠋ
ࡲࡓࠊᚓࡽࢀࡓ⤖ᯝࡢ୍㒊ࡽUO2ࡢ⁐ゎ㏿ᗘࢆホ౯ࡋࠊㅖእᅜࡢ᪤ ◊✲ࡢ⇞ᩱ⁐ゎ㏿ᗘࡢ
Ⅳ㓟࢜ࣥ⃰ᗘ౫Ꮡᛶẚ㍑ࡋࡓࡇࢁࠊྠᵝࡢⅣ㓟࢜ࣥ⃰ᗘ౫Ꮡᛶࡀぢࡽࢀࡓࠋ
䠒䠊⚟ᓥཎⓎᨾ䛻ಀ䜛ᨭάື
㻌 ᮾ᪥ᮏ㟈⅏௨㝆ࠊ⚟ᓥ➨୍ཎⓎᨾ㛵ࡋ࡚Ἑᕝࠊᅵተ➼ࡢᨺᑕ⬟ ᐃ ⎔ቃởᰁホ౯ࢆ
⾜ࡗ࡚࠸ࡿࠋᖺᗘࡶࠊ༡┦㤿࠾ࡅࡿỈ⪔᱂ᇵࢆ⾜࠸ࠊ✄ࡸ⋞⡿ࠊⓑ⡿୰ࡢ࣒࢝ࣜ࢘࠾ࡼࡧ ࢭࢩ࣒࢘ࡢᨺᑕ⬟ࢆ ᐃࡋࠊ㝖ᰁຠᯝࢆㄪࡿࡶࠊ⚟ ᓥ ᕷ ࠶ ࡿ⎔ቃ ┬ ⚟ ᓥ ⏕ ົ ᡤ ࡢ ⎔ ቃ ⏕ ࣉ ࣛ ࢨ ┦ ㄯ ဨ ࡋ ࡚ 㝖 ᰁ స ᴗ ࡸ ⎔ ቃ ಟ ࡢ ⌮ ゎ ᑐ ࡍ ࡿ ᨭ ά ື ࢆ ⾜ ࡗ ࡚ ࠸
ࡿ ࠋ
䠓. ཎᏊຊேᮦ⫱ᡂ䝥䝻䜾䝷䝮㛤Ⓨ
ཎᏊຊศ㔝࠾ࡅࡿ◊✲࠾ࡼࡧᢏ⾡ࡢ⥅ᢎࡢࡓࡵேᮦ⫱ᡂࡀྍḞ࡛࠶ࡿࠋ᰾⇞ᩱࢧࢡ
ࣝ࠾ࡅࡿᇶ♏Ꮫ㛵ࡋ࡚ࠊᮾᏛ࠾ࡅࡿᅜᐙㄢ㢟ᑐᛂᆺ◊✲㛤ⓎᴗࠕᗫṆᥐ⨨➼ᇶ
┙◊✲࣭ேᮦ⫱ᡂࣉࣟࢢ࣒ࣛࠖࢆᐇࡋࡓࠋࡲࡓࠊ㡑ᅜ⛉Ꮫᩍ⫱㈈ᅋࡢ”Nuclear Fuel Cycle
Training Course”࠾࠸࡚ࡣ㡑ᅜᏛ⏕ࢆཷࡅධࢀࠊከඖ◊࡚᰾⇞ᩱࢧࢡࣝ㛵ࢃࡿᅛయᏛ
࠾ࡼࡧ⁐ᾮᏛᐇ㦂ࢆ⾜࠺ࡶࠊJAEA ࡢ⎔ቃᏳࢭࣥࢱ࣮㸦༡┦㤿ᕷ㸧ࡸࠊᗫ⅔ᅜ㝿ඹ
ྠ◊✲ࢭࣥࢱ࣮㸦ᐩᒸ⏫ 㸧ࠊᴍⴥ⏫㐲㝸᧯సᢏ⾡ 㛤Ⓨࢭࣥࢱ࣮㸦ᴍⴥ⏫㸧ࠊ㧗㏿ቑṪ⅔ࠕᖖ㝧ࠖ
㸦Ὑ⏫㸧ࠊ㧗 ࢞ࢫ⅔㸦Ὑ⏫㸧ࢆゼၥࡋࠊ⌮ゎࢆ῝ࡵࡓࠋࡉࡽࠊᩍဨࡀ㡑ᅜഃᏛᅾ ࡋ࡚ࠊᮏࣉࣟࢢ࣒ࣛ㛵ࡍࡿᐇ㦂⎔ቃᩚഛᇶ♏◊✲ࢆᐇࡋࡓࠋ
䛆◊✲άືሗ࿌䛇㻌 ࢚ࢿࣝࢠ࣮ࢹࣂࢫᏛ◊✲ศ㔝
䠄2018.1㹼2018.12䠅ᩍ ᤵ 㻦ᮏ㛫᱁㻌
ᩍ ᤵ 㻦Sven Stauss
ຓ ᩍ㻌 㻦㻌 ᑠᯘ ᘯ᫂ࠊ୰Ᏻ♸ኴࠊTruong Quang Duc ᢏ ⾡ ⫋ ဨ 㻌 㻦㻌 㞜㒊㻌 ⚈⾜㻌
Ꮫ 㝔 ⏕ 㻌 㻦⏣ᮧ┤㈗(DC3)Ἠ⯟ኴ㑻(MC2)ࠊ∦ᖹ࿘(MC2)ࠊ ᐮᕝ Ὧኴ(MC1)ࠊᐑᔘ ❳୍(MC1)ࠊ⸨ཎ ඃ⾰(MC1) Ꮫ 㒊 Ꮫ ⏕ 㻌 㻦 㧗ᶫ ⿱⣖(B4)ࠊᶓᓮ ⌮ⰼ(B4)㻌
㻌
ᙜ◊✲ศ㔝࡛ࡣୡ⣖ࡢ⛉Ꮫᢏ⾡ࡀྲྀࡾ⤌ࡴ᭱㔜せㄢ㢟࡛࠶ࡿᆅ⌫ᣢ⥆ᢏ⾡࣭ᚠ⎔ᆺ♫ᵓ⠏ࡢⅭ
⏕ྍ⬟࢚ࢿࣝࢠ࣮ᢏ⾡ࡢࣇࣟࣥࢸ㛤ᣅࢆ⾜࠺㸬㧗ᛶ⬟࢚ࢿࣝࢠ࣮ࢹࣂࢫࡢタィࡑࢀࢆᐇ
⌧ࡍࡿ㠉᪂ⓗ࢚ࢿࣝࢠ࣮ᶵ⬟ᮦᩱ㛤Ⓨࢆ୰ᚰ㸪ኴ㝧㟁ụ㸪⇞ᩱ㟁ụ㸪ḟ㟁ụࡢ㧗ᛶ⬟ࢆ㐍ࡵࡿ
ࡶ㸪ࡇࢀࡽࡢ㠉᪂ⓗ࢚ࢿࣝࢠ࣮ᢏ⾡ࢆᵓ⠏ࡍࡿᏛ⾡ⓗᇶ┙ࢆⓎಙࡋ㸪ᆅ⌫ ᬮᑐ⟇ࡢࣀ࣮࣋
ࢩࣙࣥࢆᘬࡁ㉳ࡇࡍࡇࢆ◊✲ᐊࡢ┠ᶆࡋ࡚࠸ࡿ㸬
ᖹᡂᖺ᭶ከඖ◊ࢧࢫࢸࢼࣈࣝ⌮ᕤᏛࢭࣥࢱ࣮ᡤᒓࡢ◊✲ศ㔝ࡋ࡚ࢫࢱ࣮ࢺࡋࡓ࢚ࢿࣝࢠ࣮
ࢹࣂࢫ◊✲ศ㔝ࡣ㛤ጞࡽ ᖺ┠ࡢ⌧ᅾ㸪⥲ໃྡࡢ◊✲ᐊࡋ࡚㡰ㄪ◊✲άືࢆ⾜ࡗ࡚࠸ࡿ㸬
◊✲ࢸ࣮࣐ࡋ࡚ḟ㟁ụ㸪ᐜ㔞࢟ࣕࣃࢩࢱ㸪⇞ᩱ㟁ụ㸪ኴ㝧㟁ụ࡞ࡢ࢚ࢿࣝࢠ࣮ࢹࣂࢫࢆᥖ ࡆ㸪ࡑࢀࡽࡢ㠉᪂ⓗ࢚ࢿࣝࢠ࣮ᮦᩱ㧗ᛶ⬟ࢹࣂࢫタィࡢᇶ♏◊✲㸪♫ᐇྥࡅࡓᛂ⏝◊✲
ࢆ⾜ࡗ࡚࠸ࡿ㸬ᖺࡢ◊✲άືࡋ࡚ࡣ㸪௨ୗࡢࡼ࠺ᴫᣓࡉࢀࡿ㸬
㻝㻚㻌Development of biocompatible microbatteries
Biocompatible microbatteries that use gastric fluid as electrolyte have been proposed as power sources for ingestible sensors, to measure vital body functions such as body core temperature, pH, and pressure. Such microbatteries do not need encapsulation, enabling smaller and easier-to-swallow systems. However, so far there have been no solutions that allow realization of such small-scale batteries with existing microfabrication techniques.We have
developed and demonstrated working prototypes of microbatteries with Zn anodes and Ag/AgCl cathodes (cf. Fig. 1). For this, we adapted existing microfabrication techniques typically used for MEMS devices, which should enable further size reduction and a smoother transition to mass production. The microbatteries were tested in simulated gastric fluid and exhibited cell voltages 0.9 V, sufficient to power
Fig. 1 Biocompatible microbattery prototype. The capacities correspond to operating times of a few minutes. The inset shows a microbattery with Au-contacts consisting of a Si microreservoir capped by a SiO2wafer, onto which the electrodes are deposited.
an ingestible sensor device. Current capacities of the tested microbatteries and bare electrodes correspond to operating times of 8–20 min, a consequence of the thin (~3 µm) electrodes. In a next step, we plan to use thick film techniques—including 3D printing—to fabricate microbatteries that can be powered for longer durations (a few hours) and also to develop biocompatible microbatteries that can be used for other applications.
㻞㻚㻌Ỉ⇕㟁ゎἲ䜢⏝䛔䛯Ỉ⣲Ⓨ⏕ᛂ⏝MoS2/䜾䝷䝣䜵䞁」ྜయ䜹䝋䞊䝗䛾స〇㻌
Ỉ⇕㟁ゎྜᡂἲࡼࡾ㸪Ỉ⣲Ⓨ⏕ᛂ(HER)⏝MoS2/ࢢࣛࣇ࢙ࣥ」ྜయ࢝ࢯ࣮ࢻస〇ࢆヨࡳ㸪HERά ᛶࡢホ౯ࢆ⾜ࡗࡓ㸬✀ࠎࡢศග ᐃ㸪ᵓ㐀ゎᯒ㸪࠾ࡼࡧ㟁Ꮚ㢧ᚤ㙾ほᐹࡢ⤖ᯝࡽ㸪MoS2/ࢢࣛࣇ࢙ࣥ
」ྜయⷧ⭷ࡀᙧᡂࡉࢀ࡚࠸ࡿࡇࡀ♧ࡉࢀࡓ㸬HERάᛶࡢホ౯⤖ᯝࡽ㸪ᖖ ࣭ᖖᅽࡢ㟁ゎ࠾ࡼࡧỈ
⇕㟁ゎࡼࡾస〇ࡉࢀࡓMoS2ⷧ⭷ẚ㍑ࡋ㸪MoS2/ࢢࣛࣇ࢙ࣥ」ྜⷧ⭷ࡣHERάᛶࡀ㧗࠸ࡇࡀ♧
ࡉࢀࡓ㸬௨ୖࡼࡾ㸪Ᏻ౯࡞ᮦᩱ⡆᫆࡞ࣉࣟࢭࢫࢆ⏝࠸࡚㸪㧗ຠ⋡࡞HER㟁ᴟࡢస〇ᡂຌࡋࡓ㸬 㻌
㻟㻚㻌䜻䝜䞁⣔᭷ᶵ㟁ᮦᩱ䛾䜾䝷䝣䜵䞁⿕そ䛻䜘䜛㧗ᛶ⬟㻌
⌧⾜䛾䝸䝏䜴䝮䜲䜸䞁㟁ụṇᴟᮦᩱ䛻䛿 LiCoO2䛻௦⾲䛥䜜䜛䜘䛖䛻㑄⛣㔠ᒓ䜢ྵ䜐↓ᶵ㓟≀䛜ᗈ䛟⏝䛔 䜙䜜䛶䛔䜛䛜䠈䝁䝇䝖䞉䜶䝛䝹䜼䞊ᐦᗘ䛾ほⅬ䛛䜙㑄⛣㔠ᒓ䝣䝸䞊ṇᴟᮦᩱ䛾㛤Ⓨ䛜ồ䜑䜙䜜䛶䛔䜛䠊䜻䝜䞁⣔
᭷ᶵά≀㉁䛿ప䝁䝇䝖䛷䠈ከ㟁Ꮚ䝺䝗䝑䜽䝇ᛂ䛜ྍ⬟䛺㧗䜶䝛䝹䜼䞊ᮦᩱ䛸䛧䛶㏆ᖺὀ┠䛥䜜䛶䛔䜛䛜䠈㟁 Ꮚఏᑟᛶ䛾ప䛥䛸㟁ゎᾮ䜈䛾⁐ฟ䛻䜘䜚㟁ẼᏛⓗ⏝⋡䛜ప䛔䛸䛔䛖ၥ㢟䜢᭷䛩䜛䠊㟁ᴟά≀㉁䜈䛾䜾䝷 䝣䜵䞁⿕そ䛿㟁Ꮚఏᑟᛶ䛾䜔㟁ゎᾮ䜈䛾⁐ฟ䜢ᢚไ䛩䜛᭷⏝䛺ᡭἲ䛷䛒䜚䠈ᮏ◊✲䛷䛿䜻䝜䞁⣔᭷ᶵ ά≀㉁-䜾䝷䝣䜵䞁⿕そయᮦᩱ䜢㛤Ⓨ䠈䝃䜲䜽䝹ᛶ䛜ᖜ䛻ྥୖ䛩䜛䛣䛸䜢ぢฟ䛧䛶䛔䜛䠊
㻠㻚㻌ᐊ ືసྍ⬟䛺䝬䜾䝛䝅䜴䝮䜲䜸䞁ḟ㟁ụṇᴟᮦᩱ䛾㛤Ⓨ㻌
⌧⾜䛾䝸䝏䜴䝮䜲䜸䞁㟁ụ䛾௦᭰ᮦᩱ䛸䛧䛶Ᏻ౯䛛䛴Ᏻ䠈㧗䜶䝛䝹䜼䞊ᐦᗘ䛺䝬䜾䝛䝅䜴䝮䜲䜸䞁㟁ụ䛜 ὀ┠䛥䜜䛶䛔䜛䠊࣐ࢢࢿࢩ࣒࢘࢜ࣥࡣࢽ࢜ࣥࡢ㟼㟁┦స⏝ࡀᙉ࠸ࡓࡵṇᴟෆ࡛ࡢᅛయෆᣑᩓࡀ ᴟࡵ࡚㐜ࡃ㸪ฟຊ≉ᛶၥ㢟ࢆᢪ࠼࡚࠸ࡿࡓࡵ㸪ᐇ⏝ࡣṇᴟᮦᩱࡢࢼࣀ⢏Ꮚࡼࡿᅛయෆᣑᩓ
㊥㞳ࡢపῶࡀ㔜せ࡛࠶ࡿ㸬ᮏ◊✲࡛ࡣ㸪࣍ࢵࢺࣥࢪ࢙ࢡࢩࣙࣥἲ㸪ࣝࢥ࣮ࣝ㑏ඖἲ㸪㉸⮫⏺ὶయ㑏 ඖἲ࡞✀ࠎࡢ‵ᘧࣉࣟࢭࢫࡼࡾྜᡂࡋࡓ㓟≀ࢼࣀ⢏Ꮚࢆṇᴟά≀㉁⏝࠸ࡿࡇ࡛㸪ᐊ ࡛ྍ
㏫࡞ᨺ㟁ࡀྍ⬟࡛࠶ࡿࡇࢆぢฟࡋ࡚࠸ࡿ㸬